MB100 development

[husaberg]

I had a heap of MB50s over the years & none ever had the ring so must be a 100 thing. My mb50 I ran a CR80 stator & a YZ80 CDI so don't get too bogged down with compatibility. white\orange was pulsar coil & that was all you needed to know.

Interesting because I know the stator was good as I could get it to work on a XR200 unit. (well up until 6000rpm but that was 12000 for the XR unit) Try as I might
even though I checked and rechecked the wiring. I could not get it to run on a MB5 one?
Out of interest a C90 one will work if you want static timing and it wiil handle the revs as it was a lazy spark engine.

From memory the MB5 has one extra pin I think.

[Hilleye]

Not sure why you want a diagram of a 6-speed cluster for. To fit the 6-speed into a MB100 you get the whole 6-speed cluster and fit it. No mods or alterations are needed it goes straight in and makes the MB100 one of the better bucket engines - good cylinder, vey good crankshaft, and excellent gearbox.

So if I pull the one I have apart I can put it back together correctly.

[dangerous]

So if I pull the one I have apart I can put it back together correctly.

Whats wrong with it? I would have to ask why pull something apart when theres nothing wrong with it?

[Grumph]

So if I pull the one I have apart I can put it back together correctly.

He posted that at 5.04am DD....when i first saw it shortly after post time I genuinely thought it was a question....and wondered what odds the TAB would give on it's going back correctly - all too early.

Dangerous is right Hilleye - the gearbox appears to be one of the few areas not giving problems, as it is now is how it should stay.

[Buddha#81:Me]

He posted that at 5.04am DD....when i first saw it shortly after post time I genuinely thought it was a question....and wondered what odds the TAB would give on it's going back correctly - all too early.

Dangerous is right Hilleye - the gearbox appears to be one of the few areas not giving problems, as it is now is how it should stay.

........or he might be doing some preventative maint and putting new g/box brearings in it.....not giving issues now but who's to say they might be 30 years old.

[Hilleye]

........or he might be doing some preventative maint and putting new g/box brearings in it.....not giving issues now but who's to say they might be 30 years old.

All bearings in the crankcase are being replaced (because the case is split and I might as well while I'm at it). My intent is to not pull apart the gearbox, but if it has to come apart to change the bearings over then it's going to help if I know the sequence to put it back together correctly. You'll probably say it'll come out without being disassembled, too which I reply "Maybe it does, I don't know, but what happens if it comes apart during the process by accident."

[husaberg]

All bearings in the crankcase are being replaced (because the case is split and I might as well while I'm at it). My intent is to not pull apart the gearbox, but if it has to come apart to change the bearings over then it's going to help if I know the sequence to put it back together correctly. You'll probably say it'll come out without being disassembled, too which I reply "Maybe it does, I don't know, but what happens if it comes apart during the process by accident."

Digital camera and a witness to blame any mistakes on.
Personally I hate them, To hard to fix (rectify mistakes on my part) when I cock them up. I doubt anyone really likes them. (gearboxes)

[F5 Dave]

From having done one the day before my memory is quite clear, but they are really simple. Pull the case away & leave it in one side.

There are washers on 3 ends of the shafts. As long as you don't lose those you are pretty sweet.

Set aside some wire or a couple of big rubber bands

Best bet is to pull the shaft out that holds the sliding forks & collect those forks in your hands. The centre one has C marked on it, not sure about the others but just store them in the right order. Then pull out the gearbox complete. If it is in the left case its probably easier & there is one washer on that side. pull out the two shafts as a unit & pop those 2 washers on the other side back on. Wrap those rubber bands or wire around the ends to stop the washers getting lost or gears jumping off.

Put it back together the same way. Then slot in the shift forks & slide the shaft they live on back in, but just out of its slot. then the shift drum & slide the titties of the forks into the shift drum (may need to jiggle them up & down. Then slide the shift shaft into its hole.

easy peasy once you've done it you'll see what I mean. (heck I hope mine works now after saying that).

Gearbox bearings live in a lot of oil so are usually pretty good. Id check them & replace only if they feel grumbly. A blind bearing puller is better, but not many people have them. just got one from Torpedo 7.

[koba]

slide the titties... ...(may need to jiggle them up & down... Then slide the shift shaft into its hole.

Huh, sorry, were you saying something?

[F5 Dave]

You must spread some Reputation around before giving it to koba again.

Don't know what yer drinking last night but yer on fire mate

[dangerous]

You must spread some Reputation around before giving it to koba again.

Don't know what yer drinking last night but yer on fire mate

It's ok, I gave him the red for ya

[husaberg]

You must spread some Reputation around before giving it to koba again.

Don't know what yer drinking last night but yer on fire mate

I'm not sure that spreading anything, before giving it to Koba
enhances anyone's reputation either Dave

[koba]

You must spread some Reputation around before giving it to koba again.

Don't know what yer drinking last night but yer on fire mate

This is me cutting down the booze for a bit, I'm not sure its a good idea...

It's ok, I gave him the red for ya

I hope you aren't talking about pubes!

I'm not sure that spreading anything, before giving it to Koba
enhances anyone's reputation either Dave

Now, what is it you drink?

[husaberg]

This is me.... sure its a good idea...

Now, what is it you drink?

Beer only.
I leave the "cock-tales" to the Northerners

[Henk]

Apparently I can't spread anything to Koba for a while either.