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UTV's Off Road ( RZR, YXZ, Mini Buggy, Carts,etc.) => UTV Motor and Drivetrain => Topic started by: fabr on September 24, 2008, 08:16:25 PM

Title: Busa FNR chaincase.
Post by: fabr on September 24, 2008, 08:16:25 PM

I'll begin this with a few pics.

Title: Re: Busa FNR chaincase.
Post by: fabr on September 24, 2008, 08:18:41 PM

Those are pics of parts of test unit built to test suitability of the silent chain in a final drive.

Title: Re: Busa FNR chaincase.
Post by: fabr on September 24, 2008, 08:31:44 PM

These are pics of wooden patterns for 1 casting of prototype FNR unit using above type chain.

Title: Re: Busa FNR chaincase.
Post by: fabr on September 24, 2008, 08:35:24 PM

Slow arse dialup!

Title: Re: Busa FNR chaincase.
Post by: fabr on September 24, 2008, 08:43:34 PM

Other wood patterns for FNR.

Title: Re: Busa FNR chaincase.
Post by: fabr on September 24, 2008, 08:48:40 PM

First castings

Title: Re: Busa FNR chaincase.
Post by: artie on edge on September 24, 2008, 08:54:37 PM

Howdy Mast, the first pics looks like a simple drive using the silent chain? The next lot are of the FNR setup?

Title: Re: Busa FNR chaincase.
Post by: Admin on September 24, 2008, 08:56:51 PM

If i had ll fabbers money, i think i would certainly burn mine... ;D

Title: Re: Busa FNR chaincase.
Post by: artie on edge on September 24, 2008, 08:59:08 PM

oh....just read further, it was a test setup.. did that actually get into the rear of a buggy? Obviously it proved suitable or you wouldnt have gone on to the next step. Did you notice any great friction losses with the silent chain vs a roller?

Isnt it amazing how much time is involved in creating a new concept? If im not mistaken your the dude working on the planetry fnr setup???

Good work man, bets of luck!

Title: Re: Busa FNR chaincase.
Post by: fabr on September 24, 2008, 08:59:33 PM

Quote from: artie on edge on September 24, 2008, 08:54:37 PM

Howdy Mast, the first pics looks like a simple drive using the silent chain? The next lot are of the FNR setup?

Yep.

Title: Re: Busa FNR chaincase.
Post by: fabr on September 24, 2008, 09:05:49 PM

Quote from: artie on edge on September 24, 2008, 08:59:08 PM

oh....just read further, it was a test setup.. did that actually get into the rear of a buggy? Obviously it proved suitable or you wouldnt have gone on to the next step. Did you notice any great friction losses with the silent chain vs a roller?



Isnt it amazing how much time is involved in creating a new concept? If im not mistaken your the dude working on the planetry fnr setup???

Good work man, bets of luck!

Yes it was in the buggy that was destroyed in a fire a year ago last Labor Day.
  Silent chain has a very low friction loss. Far less than roller.THe type I'm using actually forms an involute tooth profile as it engages/disengages the sprockets.
  Time? I've lost track of the hundreds of hours involved in this.

Yes,a planetary provides the reverse function.Reverse has a 1.8:1 further gear reduction. 

Title: Re: Busa FNR chaincase.
Post by: Admin on September 24, 2008, 09:09:20 PM

Youll be the next copycat on the block when i show you a pic of the drakart trans... :police: Its amazing how some things look alike no matter what, there is only so many ways to design that bottom case...

Title: Re: Busa FNR chaincase.
Post by: fabr on September 24, 2008, 09:15:47 PM

That's why I'm not telling everything about it. ;D You are mostly right though.