Sato rearset problem 919 - Wrist Twisters
 
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post #1 of 18 Old 05-27-2011, 03:51 PM Thread Starter
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Sato rearset problem 919

The Sato rearsets have a long dowell to connect the brake lever to the rear master cylinder. This dowell doesn't rotate very easy, and there is some bending in the lever and dowell that causes me to use excess pressure to operate the brake. Has anyone else had this problem? Any remedies?

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post #2 of 18 Old 05-27-2011, 03:55 PM
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long dowell? The only thing close to that on my Sato's is a piece maybe 2" long. There is very little lateral slop in the pedal itself, when pressing on the brake it looks like that 2" long piece flexes a bit, but it certainly doesn't take a lot to get the rear brake on. Have you bled the rear brake since installation?

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post #3 of 18 Old 05-27-2011, 07:48 PM
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bullet, sounds like a personal problem, it's a piece of crap. i'm sorry to break it to you. but i'll do you a favor to help you out. take em off and send em to me and i'll send you a set of nice OEM rearsets to allivate your problem.

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post #4 of 18 Old 05-27-2011, 09:41 PM
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After idea storming I remember a little slop in the rear sets I had. I cut some different thickness spacers to get a more direct push on the master. Also if you can get a washer under the snap ring you can reduce some slop there

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post #5 of 18 Old 05-29-2011, 06:15 AM Thread Starter
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Quote:
Originally Posted by Pvster View Post
bullet, sounds like a personal problem, it's a piece of crap. i'm sorry to break it to you. but i'll do you a favor to help you out. take em off and send em to me and i'll send you a set of nice OEM rearsets to allivate your problem.
ok, I'll consider it and get back with you.

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Mr Bullet
After idea storming I remember a little slop in the rear sets I had. I cut some different thickness spacers to get a more direct push on the master. Also if you can get a washer under the snap ring you can reduce some slop there
Mine doesn't have a snap ring. I bought them used off Ebay and they may be an older version. I noticed they look different from the parts diagram on Sato's website.

The brake was difficult to operate and when depressed would not return to the off position. so I added the oem spring to the front of the lever.

My problem seems to be twofold. The brake linkage(what I called the dowell) does not rotate as the brake is deppressed, causing binding. There is slop in the joint where the linkage and rear of the lever join. I think I also see flexing in the rear of the lever. Maybe there is an updated linkage I need.



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post #6 of 18 Old 05-29-2011, 06:17 AM Thread Starter
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After looking at the photos, it appears that the linkage isn't in alignment with the master cylinder rod.

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post #7 of 18 Old 05-29-2011, 06:26 AM
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Could you take a picture of how the master cylinder is mounted to the rear set. It's hard to see in the picture but your right it appears that it's not lined up right.

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post #8 of 18 Old 05-29-2011, 06:31 AM
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Never mind. I can see it better in the second pic. I believe you have the passenger pegs on wrong. They should be on the outside of the rearsets. That could be causing a spacing issue making your master cylinder bind.

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post #9 of 18 Old 05-29-2011, 06:34 AM
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Here's a pic.

http://www.satoracing.com/919paspegfit.jpg

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post #10 of 18 Old 05-29-2011, 06:50 AM
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Do you have spacers between the master cylinder and the plate it bolts to? Those are where I got some adjustment.

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post #11 of 18 Old 05-29-2011, 09:32 AM
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glad you got a laugh bullet. i've no experience with satos, but these are fine guys on here and they'll get you sorted out!

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post #12 of 18 Old 05-29-2011, 09:50 AM
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I think firedave nailed it, I had spacers because I did not have passenger pegs.

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post #13 of 18 Old 05-29-2011, 02:45 PM Thread Starter
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Thanks!! that makes sense.

Buying used on Ebay has its drawbacks. The seller didn't send the spacers, so I assumed the passenger peg bracket was the spacer.

Is there a return spring on the brake lever?

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post #14 of 18 Old 05-29-2011, 02:56 PM
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You can order spacers for your sato's from LDH, I don't remember a return spring.

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post #15 of 18 Old 05-31-2011, 05:28 AM Thread Starter
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thanks for the help! I'll be keeping my Sato's now, and wont have to ship them to Pvster! JK

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post #16 of 18 Old 05-31-2011, 08:52 AM
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post #17 of 18 Old 05-31-2011, 11:32 AM
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ideajones, can you make us some knock off Sato's for $49?

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post #18 of 18 Old 05-31-2011, 04:25 PM
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Quote:
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I wish my ancient creaky knees could handle the position of those jewel like Satos ......

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