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Seeking thoughts on Goodwin's belt deflection adjuster...

C

craze1cars

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Jan 6, 2006
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Location
Indiana, the vast snowmobile-owner's wasteland...
Product in question is on this page for $29.95 "Yamaha external belt adjuster"
http://www.goodwinperformance.com/yamahaclutches.asp

Being new to Yami, I'm not real crazy about the whole idea of having to remove the secondary and add/remove shims for a simple belt deflection adjustment. I'm spoiled by the other brand's easy 2 minute trailside adjustments when I feel it's needed as a belt wears in or something isn't performing perfect...

Anyone here run this product or something similar? Easy to use? Any problems? Your thoughts are welcome once again.
 

Glad to hear someone likes the idea anyway. Looks to me from that page you provided for the 911 that it only works with their 911 Response kit with retrofit to "old cover or new cover". Does that adjuster just install directly on your stock secondary without any other clutch mods? I'm not planning on any sort of clutch kit at the moment, just looking for a fine-tune deflection adjustment with the stock setup for now. I'm unclear whether this item works with the stock clutching.

Thanks!
 
The Goodwin adjusts the Secondary while the 911 adjust the Pimary.
Normal belt deflection is done by shimming the Secondary, but I dont know if there would be any dis-advantages to adjusting it with the Primary clutch?( other than the cost of the 911 kit + adjuster)
I think I would stick with the Goodwin, Its a simple design and from what Ive heard works well.
Plus, the investment is minimal :jump:
 
adjuster

Keep in mind, you have to lock your secondary to use this adjuster.

I've used one for years. Usually, one washer from the hardware behind the secondary aligns the secondary perfectly.

This device opens and closes the secondary by moving the inner sheave.
 
When your belt wears, it gets skinny'r and rides lower in your secondary clutch. Which eccensially changes your gear ratio , more so at clutch engagement. Its like trying to take off in 2nd gear.
The adjuster moves the secondary clutch sheaves closer together ( making the belt ride higher in the secondary) which brings the ratio closer to where it should be.
 
Re: adjuster

apex yooper said:
Keep in mind, you have to lock your secondary to use this adjuster.
Click to expand...

I'm probably going to buy this Goodwin unit, but I'm not sure I understand what you mean by locking the secondary....could you explain further please? Does this mean you're locking it so you can't separate the sheaves to change the belt? Or you're locking the clutch rigidly to the jackshaft so it no longer floats? I'm a little confused...sorry for my ignorance.

Thanks again.
 
It also lets you fine tune your belt deflection for each new belt, and as Sno-xr stated when the belt wears or stretches you can compensate. Fortunately the 8DN is nearly bulletproof and wears like steel, on a trail sled it is pretty much a set it and forget it deal. Also nicer than changing washers.
 
work great,and thats a very good price,i paid 40 bucks for the 911 and it works!!
 
911

those 911 covers are realy nice but i am not found of the ajuster as it changes the realion ship of the roller to arm angle and thus throws off the shift patern and all of your hard done clutch work is gone this angle is very importent. yake down the C clips to bring down the side clerance and you will be much better off. i use .020 side clerance on a new belt . mine came stk with over .090 with this much clerance there is way to much track spin. its kind of like free hp. ;)!
 
Help!....my fog has thickened a bit with a couple posts and I now have two questions that are unanswered...

1. Apex Yooper (or anyone else who knows exactly what he's talking about), please expand on "keep in mind you have to lock your secondary..." Is this a bad thing, or maybe something that could hurt clutch alignment?

2. Black John (again, anyone else in the know can respond) I had problems following your post likely becuase I know nearly nothing about Yamaha clutches right now because I'm a Doo convert...you started talking about the nice 911 cover but stated you are "not fond of the adjuster"...Which adjuster? Are you not fond of the 911 adjuster (which goes on the primary) or not fond of the Goodwin adjuster I am asking about (which goes on the secondary). And when you talk its effect on "side clearance", side clearance of what? Do you mean secondary side-to-side float on the jackshaft or maybe you're talking about something inside the primary?

Thanks to anyone who can help clear my fog. I'm loving the new learning process here, but I gotta admit I will miss the slick TRA Doo clutches mostly 'cause of how familiar I was with tuning them!
 
Watersuper....THANK YOU....that's an outstanding link that I probably should have found myself over there on TY. That helps clear up most all my questions on clutch alignment and locking the secondary. I've done that "locking" procedure for years on other sleds, just never put a name to it.

Still not sure that I understand what black john was talking about, but I understand most of what I need to understand now. I'm ordering the Goodwin adjuster and will shim out the secondary as needed to make sure I have perfect locked clutch alignment when I install it.

Thanks to all who helped.
 
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