The Amazing Shrunken FXR Project Part 4

Custom Chrome Banner

final exhaust primed

Photos by Bandit and Sin Wu

It’s New Years Eve 2002 and catch up time on the ShrunkenFXR, as if I’ll melt if I don’t cross the line by midnight. And I’mgoing to lower the boom on you. It wasn’t intentional that Giggie,from Compu-Fire, came to the Bikernet Headquarters to help install aCompu-Fire charging, starter and ignition system. He added showing usthe benefits of installing S&S solids in the 88-inch Rev Tech engine.That would seemingly be enough, but since the starter involved theBDL inner primary, Giggie was snagged into helping with the beltdrive installation. That’s not all. As you will see in some of theshots we have Joker Machine forward controls installed, but we’vealways considered mid-controls. Unfortunately for the mastermachinist, we asked for Giggie’s impression and knowledgeablenotions. He dove right in and you’ll see the outcome here. There’seven more, but let’s get started.

starter on box

I’ve been running Compu-Fire Electronics for several yearsand will continue to do so. The systems are flawless and a breeze toinstall. I’ve learned to trust their components and enjoy asingle-fire ignition. My discussions with Giggie ran into startingproblems I had encountered before. He pointed out to me that newhydralic systems bleed down as engines cool which closes valves whenyou want that puppy to fire to life once more. That’s where the S&Sportion of this tech began.

Here’s the deal. If the valves are closed while the starter motoris desperately trying to turn over the engine, especially aperformance unit, it’s a bitch. The compression is over the top, andthe electric motor is fighting an up-hill battle. The battery isbeing stressed. This situation is caused when the bike sits and thehydraulic lifters bleed down. Once it fires to life that situation isrelieved.

s&s removing rocker boxes

Giggie has been testing and improving starter systems for thelast three years with Compu-Fire. They are developing the mostelectrically efficient systems on the market, but discovered thishitch in the driveline system with the jammed valve train which putsundo pressure on an otherwise fine starter motor and battery. We madea date to install the new Compu-Fire Starter, but in addition, fourlittle rings from S&S would slip into the Rev Tech hydraulics. Sincethis Custom Chrome engine had non-adjustable pushrods we had to ordera set of Rev Tech aluminum adjustable pushrods. We removed the rockercover and arm assemblies to free the pushrods.

removing lifter blocks

The lifter blocks had to be removed to retrieve the hydraulicslifters.

installing ss solid spacer

The following shots show the S&S solid ring installationprocess, I hope.

ss installing ring 2

ss installing ring 3

ss installing cam follower clip ring

Giggie used snap ring pliers to remove and install the snapring to free the hydraulic piston.

With the lifter blocks removed, the lifter slipped outeasily, and with a snap ring plier tool Giggie removed the ring andthe spring and the piston came free. The S&S ring was slipped overthe hydraulic plunger spring and the rest is history. With the clipring back in place the hydraulics were ready to rock with the new RevTech Pushrods.

revtech adj. pushrods

Giggie demonstrated how he adjusts pushrods by finding the intaketop dead center, TDC, position for the front cylinder first. When theintake valve is closing or the pushrod heading down, stick a straw orpencil in the spark plug hole and watch it travel north until it’s atthe top, TDC. check the timing hole for confirmation. Sure enough averticle slot showed up in the hole confirming our position. The camwas also in the perfect position to adjust both the intake andexhaust pushrods for the front cylinder, since both valves are closedfor compression. There is also an exhaust TDC.

top dead center with a straw

The pushrods are adjusted just like old school, solids untilthere’s no up and down slack. You’ll notice that the rings don’t makethe hydralics completely solid but give them .020 slack. Once youhave each pushrod adjusted back off one complete turn. That will giveyou .020 cushion and once the bike runs for the first time you won’thave any tapping like the old scoots had. That’s an easy fix for amajor performance issue. I hate wasting starters or batteries.

oil breather and mod parts

Since we didn’t have the adjustable pushrods on hand we tookthe rocker boxes apart and Giggie pointed out another big inch motorfix. Performance engines that are pushed to redline can build upexcessive oil in the rocker box breathers. That oil will end up inthe air cleaner if it doesn’t have time to filter back through theheads into the oil return line. Creative Cycle Products, distributedby Custom Chrome, designed a fix for this problem. They call this theNose Bleed Cure which was designed to work on all late 1993 and upEvolutions with Nose Breather (engine vents in the heads) system.Installed, the kit eliminates the collection of oil at the bottom ofthe air cleaner assembly. It allows the engine to breath naturallywithout the mess in the air cleaner. The vent extensions, installedin the rocker boxes, allow more time for the oil to filter throughthe head.

drilling drain hole

The vent extension is a breeze to install, especially if therocker boxes are removed. The center rocker arm spacer has two areasin the corners for breathers. The inside cavity has a rubbermushroom, Umbrella Valve, poised to limit some air and oil into thearea. That’s the corner we’re concerned with. The extensions wereeasy to install in some respects in the Rev Tech Rocker Boxes andcreated another challenge in other respects. Let’s follow CreativeCycle’s instructions: If we had a battery we would have disconnectedit, first. Since our tank was easy to remove we 86’d it to make roomfor the operation. You could get away with just jacking up the tank.

drilling guide hole

Remove the front rocker box top plate following the servicemanual. Unbolt the sucker. Then remove the center spacer. Remove thegasket. If the engine is new you don’t need to replace it. Theinstructions also call for replacing the Umbrella valve, but youdon’t need to do that unless it is old and worn or you bury it inaluminum shavings. Umbrella valves generally last a long time, butheat sometimes damages them and they crack. If you are going toinstall the cure in a worn performance engine, replace the UmbrellaValves.

drain sleeve in position

Drill the small drain hole with the supplied 1/8 bit. Using the13/32 drill, bore out the large drain hole. The Rev Tech rocker boxspacer already had a sizeable hole and didn’t need drilling. The ventextension slipped right in. On the opposite side of the spacer thehole was broad and open which didn’t secure the new vent extension atall, which is generally a mild press fit. We cleaned the spacerthoroughly and cemented the extension in place with sillicon on theunderside and let it set up before we re-installed the rocker with afresh gasket (generally the use of silicon on the inside of anyengine is forbidden. But since it’s Nuttboy’s bike, who cares). Makesure the ring is completely clean of any debri or burrs. In mostcases, according to the instructions, the vent extention is a pressfit into the new hole. Tape it gently into place, clean the rockerring thoroughly and re-install that bastard.

breather peice in place

Now perform the same function with the rear head. Accordingto the diagram with the kit, the two breather sections you’re lookingfor are the inboard units closest to the carb. Makes sense. Theoutboard breather cavities are not used. If you are running a monsterengine and want to extend the extension, there are small ringsincluded in the kit to enhance the existing extension although youmay need to clearance the top rocker box cover.

One more time I’ll mention silicone. It’s not to be used in anengine since one little piece could severely block an oil passage anddestroy the engine. The other reason I mentioned it again was broughtto bear by Frank Kaisler and a neatly placed .38 against my righttemple. He whispered angrily in my ear that silicon will not cementitself to chrome. He suggested JB Weld after the chrome was groundaway for a clean sticky porous surface.

installing rocker arms

That’s two out of say five techs we need to cover. How thehell are we doing? If you have any questions about this modification,here’s the number for Creative (800) 368- 6217.

engine back together

This entire tech process was handled in two differentsessions. During the first we discussed the mid controls notion withGiggie and he altered our course. We were headed in the direction ofstock FXR mid control mounts, that bolt or are welded to the frame.That notion would force us to created large sweeping mounts to clearthe BDL belt drive. Giggie had another notion. Run a shaft throughbushings built into the belt drive inner and outter covers, tolinkage much like stock through primaries, except we would mount thefoot peg on the end of the shaft for the cleanest possible approach.

installing inner primary

On the right side of the bike we had to make a plate that wrappedaround the tranny cover that would carry a similar shaft that wouldact as the axle for the brake lever. He suggested that we hide themaster cylinder under the tranny close to the rear wheel for a tighthose run to the rear brake caliper. The pipes will wrap around theshaft for the right peg and brake lever. Seemed like a good idea,except for one thought. This is a rubber mount motorcycle and boltingthe pegs to the driveline was asking for foot vibration. We discussedthe concept with several riders and the reactions were varied from”we’re nuts”, to “What the hell”, to the notion that we could run oneset of billet pegs for around town and a vibro-padded set for theroad. We decided to run with Giggie’s concept and try the simplesuckers out.

shift linkage axle

When we met with Giggie again he demonstrated the outcome.He machined the shaft for the BDL unit and an aluminum guide tubewith brass bushings pressed into the covers. The support unit wasstrong enough to stand on. Next, we needed linkage and a shifter peg,then foot pegs. In this case the foot peg will rotate with theshifter, another odd approach.

installing outter BDL plate

shift linkage 1

shift linkage 2

linkage sketch

Note the high-dollar precision sketch of right rear brakelinkage mechanism. I don’t get it, do you?

Moving right along we installed the Compu-Fire chargingsystem. This is a breeze, but first you must hit the Harley Shop oryour Custom Chrome Catalog for a set of Stator Torx screws. If you’renot sure which charging system you have here’s a clue: The 32-ampalternator kit is identified by the stator plug protuding from theleft crank case outer surface. The 22-amp stator plug is recessedinto the crank case surface. This particular system is designed tofit all Big Twin models 1981 and later. The rotor may be used withstators rated at 22 amp and 32 amps.

stater install cleaning and oiling fluids

We used the contact cleaner for clearing the stator area ofgrease or debris. The WD-40 was used to let the plug slip into placegently.

We cleaned the area in the left side of the Rev Tech casesthoroughly with contact cleaner. Then we slipped the stator over themain shaft, but not into position. Giggie sprayed the alternator plugwith WD-40 and began to wedge it into the inner slot in the case.First you need to back out the Allen set screw in the case to allowthe plug to slide through. Once the plug is in position (protruding1/4 inch), tighten the Allen set screw with Permatex blue Loctite. Becareful not to over-tighten the screw which could short out thealternator and ruin your day. With the plug in place make sure thewires are safely routed then install and tighten down the stator withthe self Loctite’d Torx screws. Done deal.

stater plug install

stater install with torx

Then Giggie slipped the smaller of the two massive washersover the shaft (except when 32 amp Harley-Davidson alternator kit isalready installed). If the Compu-Fire rotor is being installed on a1981-1988 model with the Harley-Davidson 32-amp alternator kitalready installed, the spacers and shim washers should already beproperly positioned on the sprocket shaft. Discard the washerssupplied in the kit and reuse the washers and shims in the samelocation from where they were removed. Compu-Fire charging systemsare perfect replacements for toasted charging systems.

checking shaft splines with BDL insert

Then he took the BDL engine shaft insert and slipped it onto thesplined sprocket shaft to check the fit. Some sprocket shafts fromJIMS and S&S were slightly different sizes. The splines were machinedto be .001-inch larger across the face. Since the BDL insert fitsnugly, but fit he attempted the same manuever with the Compu-Firerotor. When we installed a rotor on the Redball chopper, we had tofile each tooth to make it fit. That wasn’t the case this time aroundsince Giggie ordered the Compu-Fire rotor with the larger slots orsplines. Note the number on the rotor. The 650 unit is alreadyprepared for the larger shaft, whereas the 600 unit was built forearlier alternator motors. If you need to remove an old rotor you mayneed a JIMS machine tool or a Harley-Davidson puller part no.95960-52B. Be careful that the magnets in the rotor do not pick upsmall metal parts or hardware from the work area before you installit.

rotor with warning label

Also note the warning label on the rotor. It says not tosmack the rotor with anything. If you do so severely you could knocka magnet loose, or you could change the polarities on the magnets.Don’t hit it with anything harder that the palms of your hand. Thisone was snug, but slid right into place. Now comes the large flatwasher. This puppy is there for strength. With everyday use the faceof the rotor will flex and can crack. This washer adds strength tothe face and prevents cracking. Don’t forget it.

installing rotor

Here’s some notes regarding different models. Thisinformation is supplied with all Compu-Fire charging systems:

critical rotor flat washers

To install rotor on 1981 to 1990 Big Twin) except those witha 32 Amp alternator kit installed) place the large washer suppliedand original shim washers over the sprocket shaft (in that order).See figure 1.

To install rotor on 1991 and later FLT/FXR models, discardthe large washer supplied in the kit. Place the original washer andshims over the sprocket shaft (in that order). See figure 2.

To install rotor on 1991 and later Softail and Dyna Glidemodels, discard the large washer supplied in the kit. Place theoriginal shim washer over the sprocket shaft. The original thickspacer washer will be used under the compensating sprocket nut onfinal assembly. See figure 3.

chart

If your are installing this Compu-Fire kit on a stock bike,next you would re-install the primary drive assembly per factoryservice manual and use loctite (red) on the threads of compensatingsprocket nut. The compensating nut must be torqued to the correctspecifications:

1981-1990 models 80-100 foot pounds
1991-Later models 150-165- foot pounds
(for aftermarket shafts use manufacturers specifications.)
Don’t forget to put oil back in the primary.

regulator and bracket

That left the regulator. In the past you would be forced toinsure a proper ground by cleaning some of the regulator case surfaceof paint, the bracket surface and paint off the frame. That’s nolonger the needed. These regulators come with a separate groundstrap, which Giggie recommends that you attach to the engine case onthe right side under the cam cover to hide it. “Make sure the wire iscrimped to a lug, not soldered,” Giggie pointed out, “and that thecase is clean of wrinkle paint before it’s bolted in place.”

reg. ground and hot wire

One other wire is afforded with the regulator, the hot wire,which generally runs to a circuit breaker, the battery hot terminalor the ignition switch hot side. There’s a specific reason for notsoldering lugs or connectors, but crimping them. According to Giggiesoldering induces heat to the wires and a completely solid lead bondthat creeps under the wire insulation. The combination creates abrittle point in the wires that can deteriorate and crack withvibration. Wire connectors do not come with the regulator kit. Youneed to find the appropriate size for your application.

top motor mount

dyna coils

While Giggie was tinkering in the Compu-Fire machine shop,building prototype components for their line of products and slippingin a Shrunken FXR parts, in his free time, we installed 3 ohm Dynacoils required for the single-fire Compu-Fire ignition system. Theyare available from Custom Chrome in 6 and 12-volt models, with singleor dual towers and in 1.5, 3.0 and 5.0 ohm configurations. We chose astrong billet German made bracket, from Custom Chrome, to hold thecoils between the heads. This is one of the cleanest ways to run theelectrics with all the elements close together. The coil bracket fromCustom Chrome was also capable of holding the ignition switch and ahorn button or toggle high/low beam switch. That would be the extentof the wiring for this bike and it would all be tucked under the gastank and between the heads cleanly.

We have also ordered a CCI ignition switch discovered from thewater-craft industry by Bob McKay. It works like automotive ignitionswitch with a key and acts as the starter button eliminating the needfor a starter relay.

coils in place

What should we handle next, the ignition system or the BDLBelt Drive? Your call? The BDL Belt, okay, here goes. Actually theseunits are increasingly easy to install. Late model bikes with rubbermounted drive lines are in solid alignment which makes these unitslip right into place. Just in case you are working with a pre-unitmodel I will list some alignment recommendations from Frank Kaisler.

installing BDL insert to pulley

This particular BDL installation came with their brand new SuperStreet Clutch which consists of nine fibers and 11 steels. Installtwo steels first then alternate fiber and steel ending with a steelbehind the pressure plate. Install anywhere from four to nine springsand bolts depending on how much spring pressure is needed for yourapplication.

“With this much clutch surface, not much spring pressure will beneeded for proper engagement,” Said Bob from BDL. For additionalspring pressure for monster engine and abusive clutch throwers theyincluded washers to enhance the clutch pressure.

washers for added clutch pressure

Basically Giggie installed the backing plate first using thefasteners supplied by BDL. Installation on 1986-89 models require theuse of a 1990-up starter and modification to the starter mountinghole on transmission will be necessary. You must open the mountinghole to 2-1/8 inches.

Remove the stock starter pinion gear and complete starter gearassembly from starter. Bolt starter into back side of motor plate.

starter in place

Install the front and rear pulleys and check for proper fit. Atthis time you should determine if the front pulley will need shimmingor not depending on how the pulleys align with each other. Removepulleys and add shims if necessary.

checking pulley align. with straight edge

Re-install belt drive placing front pulley, rear pulley and belton at the same time or you’ll discover it’s tough going. Install andtighten to H-D specifications, mainshaft hub nut. BDL supplied aspecial hub nut with seal for all spline shaft models 1990 and later.Engine shaft splines should not protrude from the pulley. Be sure tored Permatex Loctite front engine nut and torque to H-Dspecifications (an electric impact driver is used but notrecommended). JIMS and CCI carry a tool that will lock the pulleys soyou can use a torque wrench. For 1986-89 taper shaft models you mustuse the stock hub nut and seal kit (included).

installing main shaft nut

For spline mainshaft models, 1990-up, apply red Permatex Loctiteonto the back of the BDL hub 1/4-inch inside of the spline and letthe Loctite flow onto the mainshaft when sliding the rear basketassembly on. This procedure is necessary so that the hub andmainshaft will fit together properly and will not let the mainshaftspin inside of the BDL hub. This procedure is not necessary on tapershaft models 1986-89.

Belt Drive Banner

(The belt drive was designed with the use of stock H-D frames.The shaft to shaft dimensions on a stock Softail are 12.825 and on anFXR is is 11.325. The number of teeth on the pulleys and the numberof teeth on the belt were engineered to exact fit using the abovedimensions. If aftermarket frames, engines or transmissions are usedthen these dimensions may very slightly. You may need to address thisproblem so that the kit will fit properly. We will not be able tohelp you with this problem, this is an issue to be addressed by themanufacturer of the aftermarket parts that you may be using.)

Rotate the motor (take the plugs out) using a socket wrench, thebelt should track straight and away from the motor plate, but not sothat it may come in contact with the outside pulley flanges. Be surethat the belt drive is not making contact with the motor plate.

Samson

Grease the starter shaft and install the BDL starter pinion gearonto the starter shaft, apply red Permatex Loctite to the starterbolt and tighten to H-D specifications (they supply two starter boltswith the kit, one is a 1/4-20 by 2.5 inches for 1990-93 starters, theother is a 10-32 by 2.5 inch for 1994 and up starters. Be sure not totighten starter bolts too tight as this may interfere with properengagement to the clutch ring gear.)

Install the clutch pack, refer to schematic spline steel first,1/2 sided friction plate with fiber facing out, then alternate steeland two sided fiber plates ending with the other 1/2 sided frictionplate with the fiber facing in. This is for the regular clutch andnot the Super Street Clutch which was covered above. Install pressureplate, springs and shoulder blots.To install shoulder bolts apply redPermatex Loctite to a bolt and run in one turn, go onto the next boltuntil all the bolts are in place, then tighten them all the way downuntil they bottom out. There is no adjustment to the spring pressure,this is all pre-determined with the length of the shoulder bolt andexact dimensions of our pressure plate.

installing clutch pressure plate

Install the four hexagon cover plate extensions into motor plateand mount side guard with the four button head allen blots.

throwout bearing adj

Clutch screw adjustment should be 3/4 to 1 turn loose from lightlyseated. Note: When the clutch is hot the adjustment screw should notbe seated. Tighten rod nut when adjustment is complete. BDL suppliesa clutch adjusting rod and nut for all models 1990 and up, only.

checking pulley align. with straight edge

If your bike is perfectly level, if you put a level on thisruler, it should be level.

SIDEBAR; ALIGNMENT CHECKS FOR RIGID MOUNT DRIVE LINESWith the engine in place and all the lower engine mounting boltsinstalled but loose, take a straight edge and place it on the innerprimary mounting surface of the engine. Look at the straight edge toinsure that the sprocket is parallel to the straight edge, if not trymoving the engine around until the straight edge and sprocket areparallel.

Once this is done snug the rear engine mounting bolts. Now checkthe engines front mounts to the frame with a feeler gauge, if thereis a gap between the engine and frame make some shims to fill thegap. The shims should be a plug fit. A plug fit is the same as a slipfit, the exact shim height to fill the space between engine and frame.

Position the transmission on the trans plate and install in theframe. Place all plate mounting hardware in their respective holes,but leave them loose.

Place the BDL engine plate on the engine and the transmission andinstall all of the mounting hardware. Tighten the plate to enginemounting bolts first, then the plate to transmission bolts. Usingyour hand turn the mainshaft of the transmission to feel forresistance, this is how you will check your work.

inner primary before

This shows the primary before installing the pulley and the masterCompu-Fire designer/machinist Giggie.

As of right now, you have assured the engine’s sprocket shaft andthe transmission main shaft are parallel to each other. Now tightenthe transmission mounting plate to the bottom of the transmissioncase. Check that all of the trans plate mounting bolts still movefreely up and down, if they or only one of them don’t move freelyfind out why and fix before moving on. Sometimes this occurs due tomanufacturing tolerances. Sometimes just running a 3/8-inch drill bitthrough the frame and mounting plate will fix small misalignments.

Here is where the difference is made. It is a lot easier to shimthe transmission mounting plate to the frame mounts than thetransmission to the mounting plate. To do this take a set of feelergauges and measure the gap at each trans plate mounting bolt, thenmake-up a shim to “plug-fit” the distance. With all four corners ofthe trans plate done check the “fifth” trans mount and shim as needed.

The moment of truth. Start tightening the transmission mountingplate bolts one at a time. Check the transmission main shaft byturning it in your hand before and after tightening each bolt. If youfeel increased resistance after a bolt is tightened then you willneed to go back and check that you got the correct shim thickness forthat one mounting bolt. Keep checking the mainshaft and proceed tothe rest of the mounting bolts. After all the mounting bolts aretight and the mainshaft spins as it should, you’re done.

A good way to double check your work is once everything is tight,remove the engine plate. The engine plate should not pop or springwhen the mounting bolts are removed, and likewise the plate should goright back on and seat against the engine and trans with no effort.

Ok, where to get shim stock. There are a number of machine toolcatalogs that sell a selection of shim stock for about $20-$30. Theseselections come with different thickness sheets of stock that you cutto whatever shape you need. Another source of shims is PerformanceMachine and Custom Chrome. Both companies sell brake calipers thatsometimes need to be shimmed to their mounts to center the caliperover the disc rotor. The mounting bolts for these calipers are3/8-inch diameter, the same size as your transmission mounting platehardware, I have bought a couple packs of these shims to use. If Iremember right they were only a few bucks per pack. If for somereason you have a big gap between the plate and frame you may be ableto use a 3/8-inch flat washer. Most flat washers these days measureout between .060-.068-inch in thickness, you may still have to addanother shim to achieve the plug fit you are looking for. Anothersource of shim stock is beer or coke cans, if I remember correctlythese cans measure out at around .014-inch, but it has been a longtime since I measured one.

The main thing to remember, is that the mainshaft must always turn free,maintaining its parallel course with the engines sprocket shaft.

When speaking of parallel shafts, that’s plural parallels.Both planes, vertical and horizontal. Believe it or not, careful set-up ofthe belt drive, or chain drive frees-up hidden horsepower.

When both shafts turn parallel, true parallel, requires the least amount ofpower to turn. Freeing that extra few ponies to do your bidding, not tomention better fuel mileage.

–Frank Kaisler

compufire ingn. parts

Compu-Fire Ignition model 21835 installation–the last hurtle.For kickstart you need the 21835KS. The electric-start unit delaysspark for two revolution to allow the starter to get rolling.

We are finally to the bottom line, the last straw, the final beerin the six-pack. We face only the simple, yet precise Compu-Fireignition system. I’ll try to make it quick.

top dead center with a straw

First find front cylinder top dead center TDC as we describedbefore with the straw (won’t hurt anything) in the sparkplug hole,after the intake valve begins to close. The notch on the cam shaftwill be at 7:00 at TDC and you know that you’re cool. There shouldalso be a straight verticle line in the timing hole, anotherconfirmation.

cam cover gutted for new ign. sys

installing ign. sensor

First you need to remove any previous ignition systemright down to the cam shaft. Now bolt in the Compu-Fire ignitionrotor or trigger wheel with some blue Loctite. Giggie then bolted inthe Compu-Fire ignition plate and turned in counter clockwise. Afteryou run the wire loom out the bottom of the Rev Tech cone. Dig out a12-volt battery and hook the red wire to the positive terminal.

installing ign. plate

hooking battery to check timing

Tape off the black, white and green wires so they don’t ground orshort to the battery. Power the red wire up with a ground link to thebike. The LED light on the Compu-Fire plate will alight.

timing magnet

Grab the magnet that comes with the kit and hold it with theHarley orange dot away from the plate and swipe the magnet left toright along the bottom of the plate. The light should go out, if not,turn the magnet over and try again. Slowly turn the plate clockwiseuntil the exact moment the light goes on again. You’re timed, donedeal, simple. You’ve static timed the bike in its advanced position.Lock the plate down and disconnect the battery.

swiping magnet for timing

final ign. screw tight with light

You wire this with with the red wire heading to heignition switch. It’s the hot wire. The Black wired hauls ass to thefront coil, the white wire to the rear coil and the green to the VOESswitch. That’s the single-fire set up. For Dual fire aim the blackwire to the coil and tape off the white wire. The green is guided tothe VOES advance switch once more. Giggie likes the VOES switch andI’ll try to explain why. I would prefer to throw it in the trash, butnooo. We will install the VOES switch in the wiring tech, later.

ign. light on timing set

I like the concept of single fire for a smoother running engineand separate coils for each cylinder for a stronger spark. Some maysay, “Bullshit.” But that’s my notion of single-fire ignitions. Thisunit has two switches, let’s start with the left. You turn it to dualor single-fire and it has eight advance curves. One to three are setfor 35 degrees BTDC advance. Four to six are 32 degrees of totaltiming, seven is 30 degrees and eight is 28. There are threedifferent curves bringing the engine to total advance at differentRPMs, one is 1,500, 2 at 2,000 and three at 2,500, based on themotor. We set it at six because I’ll be running the VOES.

The right switch controls the VOES. You can have it set at50 percent or 100 percent. Fifty percent is advanced 5 degrees and100 percent, 10 degrees. It adds timing at necessary times but willnever add timing over the advanced maximum. The final setting on theright is the Rev Limiter. The best use of the rev limiter is to setit 500 rpms past peak power. That means some testing is needed to useit effectively. No problem. It’s designed to prevent over revving themotor because of a missed shift. The right hand switch controls theVOES and the rev limiter.That’s it goddamnit. I can’t believe I made it to the end. Wejust hauled the Amazing Shrunken FXR to our master metal fabricator,James Famaghetti for final craftsmanship. We need to install aSportster kickstand kit from Custom Chrome and Giggie’s controls,then it’s the three “P”s, paint, powder and plating and this puppywill rock. Hang on. We’ll be back in a couple of weeks.–Bandit

Avon Banner

To Continue……..

Back to Part 3……..

Back to Custom Chrome on Bikernet……..

Back to Joker Machine on Bikernet……..

Back to the Belt Drives LTD. on Bikernet……..

Please follow and like us:
Pin Share
Scroll to Top