Forum

[Chris [Stockport]]

A friend of mine has a problem with the splines slipping round on his kickstart.
Any thoughts on the effectiveness of drilling, probably twice, along the splines, with it all assembled, and knocking a metal peg into each hole?

Thanks for any help, Chris

[Alan R]

Hi Chris---------- yes, that's perfectly ok ------have done a similar thing myself many times...Just be aware that the splined shaft may well be hardened and thus difficult to drill...Incidentally you'll only need the one pin, not two as shown.....The important thing is the clamp on the L/H side must be done up securely with no slop.......I use a Nyloc nut and a fine thread bolt to achieve this.....

Another way is to grind a flat on the splined shaft then drill and tap a threaded hole in the kickstart arm such that a bolt then screws down at right angles to that flat.....Thread-strength Loctite will help here.....If it helps any steam railway locomotive wheels are just pressed on with a key for location and security.....

[Jamesy]

How about drilling vertically down through the kickstart and shaft and using a bolt and nut to secure.If the kickstart is slack on the shaft to drill your way will be difficult.More drastic action would be a weld.

[Jamesy]

That shaft is probably hardened but it's worth a try.If you try this I would try a small pilot hole in the shaft first.

[Jamesy]

Don't know what diameter your shaft is but if it's smaller than 1 inch/ 25mm forget it as your just weakening the shaft.

[albert]

I would not attempt to drill along the splines as you described as the drill will immediately run off into the kick lever boss as it is the softer of the two materials end result is a guaranteed mess!

[Alan R]

Hi Guys---------Jamesy, I see we were both typing at the same time earlier on..LoL !!....Another idea would be to just increase the clamping gap to ensure that when tightened the assembly is not loose ??

[stinkwheel]

Is it the kick start that's worn or the shaft splines? I've seen someone get a new kickstart with the same spline, machine it down to a disc round the spline itself, drill out the old one, and weld the new one in. Most recently, a friend did it to fit a Hinkley triumph spline to a C90 heel-toe gearshift.



But yes, I've seen the drilling in thing done too. Mate of mine did it then just snapped off the drill bit in the hole and clamped it down. I did suggest a rowl pin would have been a better plan though.



I've also seem people shim round the shaft with bits of drinks can and drive the kickstart over for better grip.

[Mark M]

Chris, he writes in the drawing 'spares unavailable' but Enfield kickstarts are available from our Hosts? Unless it is the early 250 Crusader small type and it's best to change that anyway as the splines can shear off!

REgards, Mark

[Adrian]

Mark,<



the words KICK START (NOT ENFIELD) are clearly written on the drawing Chris posted!



Chris,



what make and model of bike is it? Someone here might actually have some spares, or know someone who has...

A.