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G: Gearbox So I pulled to cover off my Comet transmission;

everiman

Website User
VOC Member
#1
And found some shrapnel that looked like it once was a cut off end of a rubber gas or oil line complete with the steel ferrule. So I figured some previous owner had accidentally dropped it in there. Reviewing "Know thy Beast" on Burman transmissions, I see that is the remains of something that was actually supposed to be there to cushion the return of the kick start gear. So now I am worried. Stevens suggests some fixes after the steel pin that was surrounded by the rubber and steel collar has loosened. Mine is still OK, so I would like to replace the rubber steel sleeve gizmo, and was wondering if there were any updated solutions. I was thinking of machining something out of softer metal eg ali or bronze to slip over the steel pin, or perhaps some kind of plastic, like nylon. Has anyone done this yet?
All suggestions appreciated.
 

shortun

Active Website User
VOC Member
#2
On my comet i cut a small section from a 3/8 fuel pipe and slipped that over the pin , being fuel resistant it should be okay as a bump stop for the kickstart. Quadrant .
 

Bill Thomas

Well Known and Active Website User
VOC Member
#4
Leave it out before it wrecks third gear.
Robin.
Hello Robin, I remember you saying about this before, Is it OK for the kick start to come back on just the steel pin, I will have to take the gearbox apart on this build I am doing. Cheers Bill.
 

craig

Well Known and Active Website User
VOC Member
#8
another pic of steel wrapped rubber drum .

Without the steel encase, the rubber piece will be gone, off inside the case, in a couple of months.
You will be knocking the stop pin loose and needing repairs to the loose stop pin, and leak.


Burman-K-S-Bumper-side-E[2].jpg
 
Last edited:

Matty

Well Known and Active Website User
VOC Member
#12
Hi I have also had this problem with the kickstart stop rubber breaking up several times , even using the correct replacement.
So I found a piece of hard oil tube of the correct diameter to fit the stop pin, cut it to the correct length and clamped it to the pin with a smal Jubilee clip. The clip then acted like the metal surround to the rubber bush and provided the screw for the clip was orientated away from the backstop all has been well.
Hope this may help somebody.
Matty
 

Marcus Bowden

Well Known and Active Website User
VOC Member
#13
One inch diameter nylon with 3/8" hole or tad smaller so a tap fit on,,offer up cover to get correct length so is held firmly in position with cover. This is the longest lasting buffer to date as it's done Route 66,once round Tasmania and twice up & down NZ riders rally & lastly NZ annual with a lap around South Island and half lap round North Island nearly 7k miles. still not returning with a metallic sound.
bananaman
 
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