Lifesaver Engine Sprocket Shaft Nut Locking Plate

From time to time Bandit tosses something on our milk crates and asks us to evaluate the part or service. We received this locking device from Kirk for our Bonneville Assalt Weapan, and it seemed like a decent notion. Ya see, our BDL engine main or sprocket shaft nut came off during a pass at Bonneville. Since it didn’t tear up anything, we didn’t ponder it much, cleaned the threads and put it back together with a ton of red Loctite.

Bandit probably gave it back to me, ‘cause he knows what a bastard it’s going to be to remove the nut this time. Actually if that nut loosens on your bike, you could face serious consequences, if the left case Timkens shift and the entire lower-end alters course. That made this gadget even more paramount.

Plus I need to pull it all apart ‘cause Bob from BDL reported that our pulley insert was installed improperly. “Bullshit,” Bandit said, but we’ll check it anyway. It's usually Bandit who is fulla shit.

Here’s what I’m supposed to do, according to Kirk’s instructions:

Here’s one installed.

New longer 5/16 cap screws and spacers are only required on some application with 1 1/4-inch or greater offset pulley inserts. Installer needs to check and verify fastener length requirements before performing installation.

The lockplate plus ½-inch long spacers total ¾ thickness. You should have a minimum of the same amount of thread dept as the original capscrew plus the additional ¾-inch of screw fastener.

The Lockplate is intended to be installed after the crankshaft nut has been properly torqued to specification. The original pulley insert bolts must remain in place until the belt is in place and the crankshaft nut fully torqued.

Remove the original bolts, fit the new Lockplate assembly onto the nut with spacers if necessary and install the new longer bolts.

They also make one for Primo primaries.

Note: No two crankshaft nuts will line up the same. There may need to be some minor grinding/fitting. Every attempt was made to design this part so it is a simple bolt-on application, but due to varying installation techniques it is impossible to fit every situation perfectly every time.

That scared the shit outta me. If there is anything that will go wrong, I’ll face it—twice. We decided to also take a look at his BDL primary sidemount license plate, taillight bracket, since we install a lot of BDL primaries.

It’s clean and simple to mount. We mounted a primary installed sidemount on Bandit’s ’56 Sturgis Shovel, and had some problems keeping it secure and out of the way of the chain. This looks like a much easier operation.