Lucky they have cassette gearboxes then eh..

**Mon Apr 13, 2009 7:01 pm » Post: #1 » Download Post**

After a fine weekends camping in the lovely sunny weather, about 5 miles from home cruising at a steady 80/90, passed a lorry and all of a sudden lots of mechanical noises and loss of drive. Shite thinks I so pull in, no gear selection and no drive. Bum, at least it happened close to home...

I'll be wanting a new gearbox soon then.. not sure what exactly caused it but I had just changed the oil for silkolene light gear oil and its only had 500ml left in the box when I drained it..

**Mon Apr 13, 2009 7:06 pm » Post: #2 » Download Post**

Wow! Never seen that before! A picture fit for DS's "interesting parts" thread in the Members area if ever there was one!

Any sign of a leak from the seal behind the front sprocket? Strange how you can never seem to drain the same amount of oil you put in! Confused

I never seem to get the correct amount of oil out of forks!
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Andy.
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**Mon Apr 13, 2009 7:10 pm » Post: #3 » Download Post**

Wow, you broke that one didn't you!
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If I have to take the carbs off once more...

**Mon Apr 13, 2009 7:12 pm » Post: #4 » Download Post**

Shame Jeff's not around anymore... him and Wayne would have that sorted in a jiffy! Very Happy

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Andy.
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**Mon Apr 13, 2009 7:13 pm » Post: #5 » Download Post**

I saw a cr80 do this once, cannot for the life of me remember what caused it though.

No sign of any leakage, should have 900ml in it yes? Only bit I can make out from the japanese sticker on the casing..

**Mon Apr 13, 2009 7:15 pm » Post: #6 » Download Post**

The MC28 boys would love to be able to put enough power through a transmission to do that to it! Laughing

What are the bearings like?
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Andy.
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**Mon Apr 13, 2009 7:17 pm » Post: #7 » Download Post**

Hey you leave your 21 Vs 28 wars out of here Laughing

Full post mortem tomorrow, going to watch the GP Cool

**Mon Apr 13, 2009 7:18 pm » Post: #8 » Download Post**

If its the same box as a 18/21 (fitment wise not ratio's), which I think it is I have loads of them! Not quite like yours though Very Happy

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If I have to take the carbs off once more...

**Mon Apr 13, 2009 8:50 pm » Post: #9 » Download Post**

Nice one! The good news is that gearboxes seem to be cheap as chips as they dont normally break.

**Mon Apr 13, 2009 9:01 pm » Post: #10 » Download Post**

Yeah, we don't see many transmission threads, do we? When we do, they are usually "can I fit an MCxx dry clutch transmission to my MCxx?", and it's quickly answered with a "yes".
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Andy.
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**Mon Apr 13, 2009 9:04 pm » Post: #11 » Download Post**

Andy wrote:Yeah, we don't see many transmission threads, do we? When we do, they are usually "can I fit an MCxx dry clutch transmission to my MCxx?", and it's quickly answered with a "yes".

Oh so will a mc(whichever) dry clutch tranny fit my mc16 then?

**Tue Apr 14, 2009 7:19 am » Post: #12 » Download Post**

2Smoke wrote:
Andy wrote:Yeah, we don't see many transmission threads, do we? When we do, they are usually "can I fit an MCxx dry clutch transmission to my MCxx?", and it's quickly answered with a "yes".

Oh so will a mc(whichever) dry clutch tranny fit my mc16 then?

The transmission will but the MC16 crank and primary gear is shorter than all the other models and so fitting the clutch itself can be troublesome.
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If I have to take the carbs off once more...

**Tue Apr 14, 2009 7:50 am » Post: #13 » Download Post**

WOW...........I've never seen that before! Shocked

I can't remember off the top of my head what colour that nice blue represents for steel but gee wizz thats great!

You must have a good clutch hand!!! Laughing

**Tue Apr 14, 2009 1:38 pm » Post: #14 » Download Post**

Always one hand over the clutch, although if it had locked up the clutch would have been powerless Shocked

Stephen, do you have any gearboxes spare to sell?

Thanks
Paul

**Tue Apr 14, 2009 4:46 pm » Post: #15 » Download Post**

Paul, if you struggle to find a box in the UK, I'd seriously recommend you try on okshon / yahoo auctions.

I've recently bought all this for just £150.

Sometimes, you can really catch a bargain there.
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Rich
MC21 Track Bike / RS250 NF5 'Spencer', NX5 'Cadalora' & NXA 'Aoyama' / RS500 / Two Brothers Racing RC30