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Old 05-05-2008, 05:41 PM   #1
crebo
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Question replace EVO compensating sprocket with solid sprocket?

Found the following on the web:

"The compensating sprocket reduces the intensity of the power pulses thru the drivetrain. Putting on a solid sprocket is like switching to a belt drive, it will feel alot more "agressive" with no "give" to the driveline. if you don't mind that agressive feel, then have at it..."

has anyone done this on an EVO? if so what kind of sprocket did you use? would like to use standard HD clutch and primary chains...

thanks
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Old 05-05-2008, 07:07 PM   #2
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Default Re: replace EVO compensating sprocket with solid sprocket?


I've never tried running a solid sprocket on an Evo. You might find this interesting. I think I'd try one of these if I needed to replace one, or of I was building fresh.
New type of compensator from BDL
BDL (Belt Drives Limited) recently came out with their own compensator for chain primary Harley's. It's about half the price of other stock-style compensator's, not to mention less than half the weight. After all, BDL has an excellent reputation and have been in the Harley drive business for quite a while.

Good that there is much less weight hanging on the end of the sprocket shaft, plus the weight is closer to the motor, since there's no spring cup. Plus it does away with the shaft extension, more weight loss.

So how does it work? Instead of stacked conical springs it uses Teflon washers, which it compresses under load. The hub, or "lead flange" is splined to fit the sprocket shaft and it's threaded on the outside to fit the inside threads of the sprocket.

It goes on the shaft first (after the spacer), followed by a Teflon washer, followed by the sprocket, then another Teflon washer, then the nut flange (also splined but not threaded) then the nut, tightened to stock torque.

Since the sprocket has right-hand threads, the motor tries to "tighten" the lead flange into the sprocket, compressing the inner Teflon washer. On rebound, the sprocket tries to unscrew, compressing the nut flange Teflon washer.

So is it as good as, better than or worse than the stock setup?

BDL must have road tested this thing, they went to all the trouble to machine the parts on a mass scale.

It lists for $83. That's about the price of just an OEM sprocket without the rest of the compensator.



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Old 05-05-2008, 07:45 PM   #3
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Default Re: replace EVO compensating sprocket with solid sprocket?

good stuff! thanks for the info, I was looking at stock ones on ebay and they want good bucks for even a used one. BDL has a great rep from what I have seen, I'm going to look into this one, thanks again!
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Old 05-05-2008, 08:03 PM   #4
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Default Re: replace EVO compensating sprocket with solid sprocket?

have used a few of these for x-drive type softail conversions. but they were 1" offset to move the trans over and use a primary to engine case spacer. worked fine. they do list the first two without offset.

http://vulcanworks.net/Motor-Sprocke...0-p-1-c-6.html
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Old 05-05-2008, 08:51 PM   #5
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Default Re: replace EVO compensating sprocket with solid sprocket?

Why change? A comp sprocket is a good thing. Helps reduce chain stretch.
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Old 05-05-2008, 09:05 PM   #6
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Default Re: replace EVO compensating sprocket with solid sprocket?

Quote:
Originally Posted by Blue Collar Moto View Post
Why change? A comp sprocket is a good thing. Helps reduce chain stretch.
not changing, I got nothing! ordered an inner primary case from egay that should be here in a few days and Nottso is sending me a clutch shell need to fill in the rest...
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Old 05-05-2008, 09:06 PM   #7
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Default Re: replace EVO compensating sprocket with solid sprocket?

Quote:
Originally Posted by bigassbike View Post
have used a few of these for x-drive type softail conversions. but they were 1" offset to move the trans over and use a primary to engine case spacer. worked fine. they do list the first two without offset.

http://vulcanworks.net/Motor-Sprocke...0-p-1-c-6.html
hmmm, that looks good too...
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Old 05-05-2008, 09:21 PM   #8
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Default Re: replace EVO compensating sprocket with solid sprocket?

this one looks good too, and its only 20 bucks? looks like it will fit evo?
http://www.ridegear.com/rg/item/F-48...win-55-84.html
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Old 05-05-2008, 09:24 PM   #9
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Default Re: replace EVO compensating sprocket with solid sprocket?

a compensator is much beter if your running a chain
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Old 05-05-2008, 09:26 PM   #10
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Default Re: replace EVO compensating sprocket with solid sprocket?

thinking of running just the sprocket in place of the compensator, guess I would still need spacer, shaft extension, nut etc...... was hoping someone had already done it so I can see an example.... thanks for the help, I need to think and research some... I think i like the original BDL post...

here is a description of the splined sprocket from ebay:
HARLEY 24 TOOTH ENGINE SPROCKET. FITS ALL 1955 UP BIG TWINS WITH SPLINED SHAFT. PANHEADS, SHOVELHEADS, AND EVO'S. DIRECT REPLACEMENT FOR STRAIGHT SPROCKETS OR REPLACE THAT EXPENSIVE JUNK COMPENSATOR WITH THIS STRAIGHT SPROCKET. BOLTS RIGHT ON IN PLACE OF THAT NOISY COMPENSATOR.
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Last edited by crebo; 05-05-2008 at 09:54 PM. Reason: added info
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Old 05-06-2008, 09:07 AM   #11
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Default Re: replace EVO compensating sprocket with solid sprocket?

these guys had the bdl compensating sprocket for 68.95 with free shipping if your order is $99 or over, so I ordered it along with a mainshaft sprocket to get the free shipping. The more I read about the bdl the more I liked!

http://www.phatperformanceparts1.com...DL-COMPENSATOR
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