Technical Locking a banjo rear

I'm wanting to lock up a banjo rear end....but in a way that could be reversed later. In other words without welding the hell out of the internals. Back in the day you could buy two tooth spider gears but I have not seen these for years. Anyone know if someone still makes them or of an alternate idea?

 

Im no expert but for something to be reversible I think you'll be looking for a spool.

Chris

 

I welded between the teeth of some spider gears to lock up a rear end for circle track racing. I left the spiders removable, not welded together. Worked fine and worst that could happen would of been to wear the weld away and become open diff again but that never happened.

Dave

 

Exactly what I will do if I can't find some two tooth spiders

 

Pin the spider gears to the shaft so they can't rotate.

 

I just tore down my Cyclone quick change and the spiders were also welded up as you described.

 

I have to ask. “Two tooth spider” gears?

 

^^^^^ This! Locking spider gears. Got it. Found the pic on this thread. https://www.jalopyjournal.com/forum/threads/banjo-rear-end-old-school-tricks.1156354/

This is why I asked the dumb question. These are what I’m familiar with.

 

How I did mine using worn out spider gears.
Fully reversible which I was totally glad of as 500 miles in the novelty had fully worn off.

 

You found them! Thought I was "out there" eh!

 

As was mentioned earlier....today you look for a spool which as far as I know doesn't exist for a banjo

 

Right!

 

Could you remove the spider gears and on bench just weld fill in a couple teeth to effectively make similar to the 2 tooth gears? No need to fill all the teeth, just the ones next to the axle gears to prevent them from turning. Still be reversible as long as you have an extra set of spider gears.

 

Would using the less-tooth gear kinda mush the axle gear as it tries to turn into those shallow or non-existent teeth? Then the axle is no good if you wanted to convert back?

 

Those two tooth spiders look good, I've been trying to think of a way of locking the banjo on the belly tank, with it being rigid rear axle I get quite a bit of rear end hop under heavy acceleration and am thinking a locked rear diff would help. could just weld it up but not very reversable.

 

That is what I was trying to describe that we did. Worked fine.

Dave

 

I understand how spring wind-up can cause axle hop (tramp) under acceleration, and how Caltracs, slapper bars and traction bars prevent it. Not sure how a locked diff prevents axle hop though?

Cheers,
Harv

 

What surface are you running on ? And how much power ?
When you say "rigid rear axle", do you mean no suspension ?