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Sprocket Change And Chain Shortening
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11/24/2002
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I picked up a 37 tooth sprocket a SA750 member to replace my stock 41 tooth. Reducing the teeth will give me more top end, but I may lose some off the line.
There is alot of dicussion as to how much loss there is, but I plan on putting a K&N air filter and a stage 3 jets 138,134. Note to self "set the needles on the 4th clip position".
Shortening the chain was an experience and getting the master link on was fun also.
Anyway, here are some pictures and commentary about this procedure.
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First things first, take the rear wheel off.
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Here is the stock sprocket (41 tooth) and the new one (37 tooth) side by side.
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Getting the wheel off and swapping over the sprocket was relatively easy. Now the fun starts, shortening the chain.
The stock chain on the ACE is continuous, which means if you look for the master link like I did, you wont find it.
There is none. Therefore, it needs to be broken somehow. There is a tool that splits chains but who needs that when you have a dremel!
Here's how that went.
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Sparks are ah flyin! This was no problem, a couple cutting disks later.
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This is what you end up with after the dremel session. Actually there are a few more pieces but I swept them up before I took this picture.
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While the chain was off I figured this was a good time to give it a good cleaning. I asked for some advice on the SA750 forum about soaking it in kerosene. I got varied responses. Some folks said it was ok and some said no way. In any case I did a little research and felt that soaking an o-ring chain in kerosene is fine. This is good because at the point when I was informed it was not a good idea, I had already done it.
I will keep my eyes on it, but I got information from experts who said it was a preffered cleaning method.
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The following images are examples of how I got the master link on the chain. This is not an easy thing to do, especially if you intend to use plain
brute force which I initially tried. I quickly realized there was no way I was going to be able to compress the link together withour using some ingenuity.
In the following pictures I tried to relate the technique I used to get it on, I was not going to take it off to do a step by step photo shoot! BTW-The master link was a 525 DID o-ring.
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Here is an example of how I got the master link on. Needle nose vice grip on the rear and a small channel lock to compress the front.
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Snapping the clip on. Notice the vice grip on the rear and after compressing the front with my channel lock, I used a needle nose as shown in the picture.
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All done, back together and ready for the next winter mod!
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| If you want to use this article or its images somewhere else on the net please notify me, thanks. |
| By: Joseph Kohler aKa: c0d3wr1t3r |
