may be a dumb question , but not haveing a 750 p to look at ! Is the output shaft on the 750 shorter than the 906 thus needing that offset sprocket ? And
CB, could those mounting holes in the rear sprocket have been countersunk to take a countersink head cap screw ? just thinking
Oh yeah ! I see in my ducati book that the threads on the paso rear axle are 16mm , which made me hope that the axle diameter might be 17mm ( SS rear wheel berring size ) but someone else has hinted that the axle is 20mm . Can any of you recall the correct size ?
I have a 17 x 4.5 brembo wheel for the rear and am looking for a front ( $$$$)
Has anyone fitted a 17 inch front ( with speedo drive ) to a paso speedo , if so how much out is the speed reading ,it would just be to much to think it might be right . If Its not right I think I will make a whole new dash and use the SS gauges ( plus a couple of others )

I have a Bridgestone Battlax BT014 130/70/16 on the front,dimensions are 592 diameter, 130 wide.
The rear is a Bridgestone Exedra G704 180/60/16 dimensions are 620 diameter, 179 wide.
Hope this helps.

Thanks for the tyre info above G, i have got my local bike shop sourcing some at the moment and he will report soon with costs / availability - He also told me of some RATHER WORRYING NEWS FOR US BRITS - read on.
Whilst i have the 906 up on the work bench i have decided to go 'colboys' route sooner than i expected even though i have a pair of hardly worn original michelins, the reason is, and this will be of SPECIAL INTEREST TO UK OWNERS OF ALL MODELS WITH 16" WHEELS - as part of the new MOT test examiners will be inspecting the manufacture date / codes on tyre walls and ANY TYRES FITTED OVER 4 YEARS OLD WILL BE DEEMED UNROADWORTHY AND WILL CONSTITUTE A FAILURE.
This guy runs a bike only MOT test station as part of his bike business, and he has been reliably informed this will be introduced in the next MOT test update but as yet he has no info as regards implementation date.
Throw out those wooden tyres or burn up the road while you can!!!!! jon

Thank Goodness I live in New Zealand, where the "Warrant of Fitness" testers check for 2mm of tread depth, look for obvious splitting (perishing) of the rubber, and then pass the bike. Mismatched tyres? OK! Different brands? OK. Different types? No worries.

You wanna ride it - that's just fine.

Looks like I can put off the wheel conversion for quite some time to come. Yay.

To answer McTool's question about the differences between the 906 and the 750:
the 750 had a 5 speed, and the 906, well, a 6 speed (that's how it got that model number. 900 motor, and 6 speed =906)
The added gear made the cases wider, but mostly moved the countershaft sprocket outboard. Chainline on 900 motors should be able to handle the larger rear tire better than the 750. They offset the motor in the Sport to achieve the same thing, and not use the funny offset sprockets. There are some (rare) offset countershaft sprockets.

Cheers,

CB: ah so !I knew there would be a good reason for you not doing that , thanks
Ducinthebay : ah so ( again ) thankyou
Mobius : he he there are lots of advantges living in a backwater . Last time I had a tyre chech the guy looked at the tread depth indicators and when they wernt allworn off he let it pass ( then nearly rode it into the pit..... the wally )

Have a look here viewtopic.php?f=2&t=3191 CB

Hmm, good point. I guess they offset the c/s sprockets to match the chainline. So, different c/s sprockets between the 900 and 750? Could you then put the 750 sprocket on the 906 and move the chainline outboard? Or was the 906 its own beast and not the same as the 900ss/monster cases/transmission?

On the Sport, they had the early version that had the big dish offset on the c/s sprocket. Then they shoved the motor over to the left, and used a smaller offset on the sprocket, and added 3mm spacers between the frame and the engine. With the last version (always the best one) they put in the 900 motor which had the 6 speed, and removed the 3mm spacers. I don't know what sprocket they used, but the 900 had the 17" white 3 spoke wheels that were common to later SS and Monsters, so they played with chainline and can't be compared.

Cheers,

as part of the new MOT test examiners will be inspecting the manufacture date / codes on tyre walls and ANY TYRES FITTED OVER 4 YEARS OLD WILL BE DEEMED UNROADWORTHY AND WILL CONSTITUTE A FAILURE. To quote v2barn
innit a load of shit. Seems to me that regardless of where we live some pack of assholes ( that dont ride ) have taken it upon them selves to rescue us from the evils of motorcycles . 4 years is nothing . Ok for regular riders , but I do feel for the owners of valuable classics ( maybe a 2nd or 3rd bike ) that dont cover enough ground to wear out a tyre in 4 years , spose we will have to get them doing burnouts , yeah , I can just see the goldies and manxes lining up at the next rally...... not!.Will they do the same for cars , If your ferrari or lambo ( you think motorcycle tyres are expencive !!) has "dated " tyres are you going to be failed .... I doubt it . You would think that anyone not interested in bikes would leave us alone , instead of thinking up reasons to ruin our fun, wankers !