challenger gearbox ? 24mx5/24mx4/36mx4

[greeves246]

Hello everyone

I have a problem with a late challenger gearbox the shaft for the
clutch seems short ? the clutch wheel will not line up with the
front engine sprocket its a widths of a single chain
? is this the clutch alignment or the shaft or gear ? wrong way around.

][--ENGINE
II
II
II
][-- GEARBOX/CLUTCH

GAZZA

[Terry Sewell]

Challenger Gearbox

Have you fitted the hardened washer that sits behind the clutch. If not it will allow the clutch to go too far in. The part number is G1008/58

Terry Sewell.

[greeves246]

washer

hi terry

i have several washers here are they splined or not splined ?



gary

[stormer254]

No splines as I recall, about 3-4mm thick.

[greeves246]

spacer

was it like this ? i know they break on griffons

[stormer254]

Like what?

[Brian Catt]

Broken into atoms??

[John-Boy]

You may also need to fit shims between the spacer and clutch to finally align the chain.

[greeves246]

washers

now have a look

Like what?

[greeves246]

washer

what dimentions john i have lots of griffon washers but the mx5 seems to be a lot bigger

You may also need to fit shims between the spacer and clutch to finally align the chain.

[greeves246]

washer

the washers i have are splined but do remeber seeing a bigger washer at a large stock of greeves stufff

No splines as I recall, about 3-4mm thick.

[John-Boy]

Gary

on my MX4 I have two shims, from memory about 0.025" in total. Without the shims, the primary chain was grinding on the edge of the sprockets. You may need to try various thicknesses until the chain runs smoothly. You may be lucky and not need any shims.

I have no idea where you can get these shims, perhaps Terry Sewell or Geoff Nunn.

[greeves246]

thrust washer CHALLENGERS

wonder if ROB has the drawings for said washer (HINT HINT) and what material and brinell hardness ? or perhaps use casenit

Bearings are EN31

GARY

[greeves246]

Racing clutch !

hi every one i have realised the clutch i brought for my 360 was not ! a 360 clutch ! dammmmmmmm 26 years ago it has a cast center ! so its for a
diffrent bike

so may have to go to a griffon cluch