Bucket Blues

[steve k]

I have finally got around to finishing the matching of my crankcases and proceeded to assemble the gear box and bottom end. I am fitting a mb 50 gearbox into a mb 100 engine and have encountered some problems. With the gear clusters, selector drum and selector forks in place the selector drum can be shifted but it does not sellect all the gears. I have checked the shimming and am sure that all is correct there. The engine is not back together when trying this. the clusters are sitting in one side of the cases on there side. Would puting the cases together and then trying the shifting make any difference. Any advice much appreciated.

Would really like to do some racing this season but this is starting to get a tad frustrating:spudgrr: . Any ideas F5 or Speedpro?

[gav]

Sounds serious, tell ya what, I'll give ya $50 for the lot.......

[ajturbo]

$45.00.......

[dangerous]

forty dollar :spudflip:

My bike already had the 6 speeder in it, so I cant help ya there but I'll ask about.

[speedpro]

I've never tested with the cases apart, too much slop and flopping about to prove anything. You only need the gear shafts and the selector drum and forks and their shaft. How hard can it be to just slide the other crankcase half on. Use a gasket as well when testing as they are thick enough to cause a problem. I'm probably going to run my new motor without one and although it's been a while since I looked at it I recall that it was causing problems with the shafts binding when I tightened the cases up without a gasket.

[steve k]

I've never tested with the cases apart, too much slop and flopping about to prove anything. You only need the gear shafts and the selector drum and forks and their shaft. How hard can it be to just slide the other crankcase half on. Use a gasket as well when testing as they are thick enough to cause a problem. I'm probably going to run my new motor without one and although it's been a while since I looked at it I recall that it was causing problems with the shafts binding when I tightened the cases up without a gasket.

true that. wil put it all together and see what happens. as for you bunch from the si will let you know when i get totally pissed with it and put it on the market.

cheers

[F5 Dave]

You’ll never get it to shift all gears with it half apart. Just leave the crank out to trial so it slips apart easily again.

Just remember to keep turning the shaft as you shift. Obviously at some stage the holes in the gears won't line up so you turn the shaft to help it slip in. Never had any dramas with the MB50-100 gearbox.

[steve k]

You’ll never get it to shift all gears with it half apart. Just leave the crank out to trial so it slips apart easily again.

Just remember to keep turning the shaft as you shift. Obviously at some stage the holes in the gears won't line up so you turn the shaft to help it slip in. Never had any dramas with the MB50-100 gearbox.

Thanks Dave.

[steve k]

well there is definately something not quite right with the six speeder. put the gear box together as suggested and had a go at shifting. there appears to be a neutral where first should be and the whole thing locks up when you get through to where third should be.

I have no idea whats going on there. F5 would you be able to take a look at it if you have the time?

Cheers

[F5 Dave]

Yeah sure, give me a yell next week as off to desert storm this weekend.

[steve k]

Yeah sure, give me a yell next week as off to desert storm this weekend.

Thanks dave. will pm ya next week.

[gav]

well there is definately something not quite right with the six speeder. put the gear box together as suggested and had a go at shifting. there appears to be a neutral where first should be and the whole thing locks up when you get through to where third should be.

I have no idea whats going on there. F5 would you be able to take a look at it if you have the time?

Cheers

$55....

[steve k]

$55....

for that price ill even throw in a

[gav]

Speaking of MB100 gearboxes, does anyone know how much oil they take? Using Motul Transoil.

[speedpro]

Take the 6mm bolt out of the clutch sidecover, fill it up slowly whilst holding the bike upright. Stop filling when oil starts running out the bolt hole.