K75 transmission swap

[pdg]

It's probably been discussed plenty of times before, but I had a quick search and either I'm using the wrong search terms or I'm being far too lazy to persevere.....

Will a K11LT transmission bolt up to a K75 engine bellhousing?

Does the K11 gearbox housing have the appropriate bosses to accept the K75 footpeg plates?

Will the 75 swingarm/shaft work in the 1100 casing until a paralever turns up?

I'm hoping it's a case of unbolt the 75 gearbox and bolt in the 1100 one instead....

[K75RT Keith]

It's probably been discussed plenty of times before, but I had a quick search and either I'm using the wrong search terms or I'm being far too lazy to persevere.....

Will a K11LT transmission bolt up to a K75 engine bellhousing?    YES SAME TRANSMISSION ONLY DIFFERENCE IS THE 2  THREADED HOLES FOR PARALEVER MOUNTING

Does the K11 gearbox housing have the appropriate bosses to accept the K75 footpeg plates?  YES.   IF YOU CONVERT TO A PARALEVER YOU'LL NEED THE 11OO FOOT PLATES

Will the 75 swingarm/shaft work in the 1100 casing until a paralever turns up?  YES  THERE ARE JUST TWO THREADED HOLES THAT MAKE IT A PARALEVER TRANSMISSION

I'm hoping it's a case of unbolt the 75 gearbox and bolt in the 1100 one instead....

[rbm]

One gotcha that bit me was that you have to use the K75 clutch pushrod in the K11LT transmission.  Discard the K11 pushrod and throwout bearing.  If you don't do this, the clutch freeplay is not adjustable and the clutch doesn't work.

If you decide to use K75 footpeg plates, you'll have to space them away from the frame at the back to clear the wider K11LT drive shaft housing.

[K75RT Keith]

Thanks RBM, I Forgot that the push rod was different. 

[pdg]

Cool, thanks guys.

Not that it makes a huge amount of difference really, but is the higher gearing of the K11 compared to the 75 made up inside the gearbox, in the FD or a combination of the two?

I've found a few 'cheap' parts so I'm getting things together - I think this winter the 75 will be getting some fairly serious looking at now I have a crappy jap machine I don't care about to throw around in the snow  :riding: Oh yeah, having somewhere to work that'll be dry and warm will make a nice change too.

[rbm]

Both.  Read about the K75/K1100 gearing differences and fool with a K-bike gearing calculator

[F14CRAZY]

Anyone figure out how to bolt up a K1200RS trans yet...

[K75RT Keith]

Gearing is only different in the final drive ratio.

K1200 tans has a different shape/bolt pattern.  If you want to design an adaptor plate and shaft couplers to compensate for the thickness of the adaptor, I'm sure there are a couple people who'd be interested.

[rbm]

Easier to bolt a K100 trans to a K1200 engine;  The mounting holes on the intermediate flange line up.

https://drive.google.com/file/d/0B3UPbNZRyr1rR2pHMUR5dmh6TGM/edit?usp=sharing