final drive or clutch

[Toddyboy]

So now my question is can I use a rear diff from a standard classic or touring as I see thoseOn eBay but none specify the Roadster

 

[IMFASTTOO]

So I just pulled the drain plug on the final drive and no fluid whatsoever just chunks of metal on the magnet

WTF are you kidding no oil in the final drive ?

 

[Jag]

So now my question is can I use a rear diff from a standard classic or touring as I see thoseOn eBay but none specify the Roadster

 

[mully95]

The thought of the final drive not having any fluid is a nightmare. Whoever preformed that service would hear from me...lol

I think I would find one from a Roadster. There was "updates to the shaft drive itself". The reason I say that is in this video starting around 1:35 its what is mentioned. Where the exact location of the "update" took place I have no idea. Now if the final drive and the shaft drive is two different things then disregard this post.

 

[scot in exile]

Does the drain plug have a magnet????? I know the fill plug(higher one) has a magnet if you are removing the top plug you might have to stick your wee finger in the hole to feel the oil.

 

[ozrider]

So now my question is can I use a rear diff from a standard classic or touring as I see thoseOn eBay but none specify the Roadster

A Touring unit is different as the angles are wrong where it bolts to the driveshaft housing on the swing arm as it runs a narrower rear tyre so wont fit a standard or Roadster.

 

[Triple Trouble]

The list price for a std or classic is $573 and the Roadster is $ 2,724! What is with that?

 

[mully95]

The list price for a std or classic is $573 and the Roadster is $ 2,724! What is with that?

Must be the updated shaft drive I spoke about.... lol

 

[Idaho Red Rocket 3]

Did the up date include gold gears and bushings ?

 

[warp9.9]

Must be the updated shaft drive I spoke about.... lol

Updated or did they finally figure out there was no need for two drive shafts in stock. Sure the touring had a larger diameter spline going into the final drive but the rest of the shaft was identical. I am not sure if the Roadster just switched to the same drive shaft for ease of parts stocking or if it is stronger. Sure as long as the tooth size has not changed and the diameter expanded would seem to be stronger but if the spline cup on the final drive unit only had the internal changes and the Outside diameter of the cup remained the same I would say it then got weaker. So go figure. If I had one I would be measuring the spline and cups to see but alas I have not had the need for Roadster or Touring parts
Oh then other then the older ones needing better grease from the factory (which they have changed) I do not remember anyone breaking a drive shaft or the spline cup on the drive unit. Many of us were above 200 hp and massive torque before the touring came out without destroying the final drive units.


Now that being said have you pulled the unit yet?
If you did is there signs of oil migrating up into the swing arm?

If so I would suspect you lost the seal and of course you know where the oil went.

If not then I would have to ask who did the last lube change on the final drive?

I would definitely look so you can figure out whether the drive shaft spline is toast also.


Anyway just thinking out loud here