The New And Improved Unofficial R65 Forum V2

Technical Discussion => BMW Technical Q&A, Primarily R65 => Topic started by: davidpdx on May 14, 2013, 10:51:01 PM

Title: ATE Calipers
Post by: davidpdx on May 14, 2013, 10:51:01 PM

   Here is a letter that was sent into the Airmail magazine. Not sure how I feel about using standard O-rings in place of metric but I have never had to find metric ones. I have this caliper on my 1984. I am thinking that it must be a replacement. Any input on if this would be a good rebuild if I ever need it? Hope I got these sized so you can read them.  

Title: Re: ATE Calipers
Post by: Session101 on May 15, 2013, 12:40:19 AM

Choosing not to rebuild mine, but if you are asking about the rebuild, i hear the rebuild parts from BMW are $115. I was just looking at what it would cost to rebuild, and the seals are around $45 from motobins. I would imagine it wouldn't be hard to find metric seals seems how the rest of the world is on the metric system except US.

Title: Re: ATE Calipers
Post by: montmil on May 15, 2013, 05:35:53 AM

Note the author of this article, David.

Mike Valenti, a long-time member of this forum, is a well respected faculty member of the BMW College of Knowledge and has even been shanghaied by The Snowbum to produce some extensive Airhead tech articles.

Most everyone will tell you that Mike's knowledge is golden. As for me, what Mike says has always been most excellent advice

Show of hands... How many of us have benefited from the Sandy Eggo man's help? I'm a multiple winner myself.

BTW, when you get down to this small size of an o-ring, it's almost impossible to detect any size difference; especially when it's going to be clamped between the caliper pieces.

Title: Re: ATE Calipers
Post by: Barry on May 15, 2013, 06:32:47 AM

Quote

Show of hands... How many of us have benefited from the Sandy Eggo man's help? I'm a multiple winner myself.  

I'll have to shrink it before I can read it but if it was written by MikeV it will undoubtedly be of the very highest quality.

Title: Re: ATE Calipers
Post by: disco51 on May 15, 2013, 06:34:27 AM

I rebuilt mine using said o-ring from Mr. Valenti himself.  He was extremely helpful when I went through the process with a couple of emails exchanged back and forth.
No leak after about 2-3 months and 1000 miles.  I'm satisfied it's a good fit.  I have 2 extra if someone out there wants one... just PM me.

Title: Re: ATE Calipers
Post by: Mike V on May 15, 2013, 01:19:40 PM

Dave,

I have a high level of confidence in the after market o-rings obtained for the application of the ATE' calipers as noted in the article.  Mine have been serving me well with no leaks or problems.  I have a few extra in my shop I'm happy to mail out to you if you like.  Send me your address by PM and I'll try to get them out to you.  As with everything - it's your decision based on your own research and personal preference.

Thanks for the very kind words guys, not sure I'm worthy of the accolades.  Just a passionate hobbyist who takes helping the forum seriously, and happy to return the favor for all the help you've given me.

-Mike V.

Title: Re: ATE Calipers
Post by: Bob_Roller on May 15, 2013, 03:47:30 PM

A&S BMW lists the ATE rebuild kit for $42.80 for one caliper .

The kit has 2 piston seals and 2 dust boots .

Title: Re: ATE Calipers
Post by: montmil on May 15, 2013, 04:01:09 PM

Quote

A&S BMW lists the ATE rebuild kit for $42.80 for one caliper .

The kit has 2 piston seals and 2 dust boots .

But no O-rings.

Title: Re: ATE Calipers
Post by: vontresc on May 21, 2013, 07:22:46 PM

And no replacement pistons either...