The New And Improved Unofficial R65 Forum V2

Technical Discussion => BMW Technical Q&A, Primarily R65 => Topic started by: Adamastor on August 28, 2009, 03:46:50 PM

Title: How much oil on a dual brembo disc brake forks?
Post by: Adamastor on August 28, 2009, 03:46:50 PM

Hi there...

My 1985 R65t has dual brembo caliper disc brake front forks but since I dont have the manual, and since I have seen different informations on the web ( 190cc versus 300cc each fork) I would like to know if anyone can help me out on this on.
Is normal hidraulic fluid  ok for it?

Regards,

Sergio

Title: Re: How much oil on a dual brembo disc brake forks?
Post by: Bob_Roller on August 28, 2009, 03:51:19 PM

To just replace the fork oil after draining it, you need 190 cc of 7.5 wt fork oil, about the only place you can get this weight oil is at a BMW shop .

If you can't find this weight oil, 10 wt will be adequate, just don't go any heavier than this .

Title: Re: How much oil on a dual brembo disc brake forks?
Post by: Adamastor on August 28, 2009, 04:24:49 PM

Thanks, bob, it's one more thing on my list of "To Do" :) Quite a lot of work, but it makes part of the learning process.

Title: Re: How much oil on a dual brembo disc brake forks?
Post by: nhmaf on August 28, 2009, 05:41:56 PM

If it sounds abnormally noisy afterward, you might want to go up another 10-15cc or so - leastways I've found that works nicely in my '82 LS forks, but the pre-1985 R65 forks are different.  Your bike is an '85 (monolever frame, so your forks are of the design that was inherited from the K-bikes and used on all the monolever frame airheads).

Title: Re: How much oil on a dual brembo disc brake forks?
Post by: Bob_Roller on August 28, 2009, 06:13:55 PM

RealOEM.com, shows an '85 R65T as a dual shock bike with snowflake rims .

Title: Re: How much oil on a dual brembo disc brake forks?
Post by: nhmaf on August 29, 2009, 12:36:54 AM

That is odd - I thought that the R65s all switched to the "big" mono frames in the 85 model year. Hmm.

Title: Re: How much oil on a dual brembo disc brake forks?
Post by: Adamastor on August 29, 2009, 05:30:36 AM

Yes, my R65T has dual rear shocks, so It is the "smaller" frame, right? It has however the dual front disc (brembo).
Is it really 190cc? I realise I have and odd R65, right? Maybe because It was an ex-police force bike...

Regards

Title: Re: How much oil on a dual brembo disc brake forks?
Post by: Bob_Roller on August 29, 2009, 07:58:53 AM

I don't think there were any options available from the factory, for front forks, there's an remote chance that a  previous owner may have 'improved' the bike with different forks, but that's a long shot  .

Title: Re: How much oil on a dual brembo disc brake forks?
Post by: welshman on September 02, 2009, 02:41:56 PM

Slightly off topic but my '85 R65RT was built in June '85 and is a twin-shock and twin Brembo model. The numbers were checked out on an internet site but I can't remember which. I've put 10w oil in and 190cc in each leg. Glyn.