Page 2 of 3 FirstFirst 123 LastLast
Results 21 to 40 of 41

Thread: Rear Brake Master Cylinder Upgrade for RSV1000

  1. #21
    Superbike Twin ride4fun's Avatar
    Join Date
    Oct 2009
    Location
    Hertfordshire
    Posts
    192
    Quote Originally Posted by dazthephot View Post
    Incidentally I have a weight on the pedal as we speak
    First, you need to bleed the system to ensure there is no air in the line and/or caliper. After this, it needs to be primed; removing any trapped air within the master cylinder itself. As there is no bleed nipple this end, the weight on the pedal allows the release of this back into the reservoir.

    As far as the pedal travel is concerned, it should not be excessive. If it is, then you have air within the system, somewhere.

  2. #22
    Superbike Twin dazthephot's Avatar
    Join Date
    Apr 2012
    Posts
    207
    OK thanks. I'm going to have another go at it and use my vacuum pump to draw more fluid through. I've had it good in the past so I should be able to get it back. Cheers

  3. #23
    Superbike Twin dazthephot's Avatar
    Join Date
    Apr 2012
    Posts
    207
    Had another go, looks like there was air left in the system. Got a decent brake now with less lever travel, prob around 35mm which I can live with. Used the vacuum bleeder instead of the lever pump method.

  4. #24
    Superbike Twin ride4fun's Avatar
    Join Date
    Oct 2009
    Location
    Hertfordshire
    Posts
    192
    Quote Originally Posted by dazthephot View Post
    Had another go, looks like there was air left in the system. Got a decent brake now with less lever travel, prob around 35mm which I can live with. Used the vacuum bleeder instead of the lever pump method.
    I measured the pedal travel on mine at 20mm excluding any free-play.

  5. #25
    Superbike Twin dazthephot's Avatar
    Join Date
    Apr 2012
    Posts
    207
    That's way better than mine. I might try fiddling with the push rod. I reckon the more fluid in the MC the less pressure required to actuate the brake. My theory anyway.

  6. #26
    Baby Twin
    Join Date
    May 2015
    Location
    Amsterdam
    Posts
    12

  7. #27
    Superbike Twin dazthephot's Avatar
    Join Date
    Apr 2012
    Posts
    207
    Thanks

  8. #28
    Superbike Twin ride4fun's Avatar
    Join Date
    Oct 2009
    Location
    Hertfordshire
    Posts
    192
    I haven't given up on this yet. Going to try reverse bleeding to ensure the system is completely air-free.

  9. #29
    Baby Twin
    Join Date
    May 2015
    Location
    Amsterdam
    Posts
    12
    Good luck !!!
    I'm very happy with that solution. Wasn't cheap but most definitely solved the problem.
    I'm now 7k km after the installation and can still lock the rear if I'm not careful with the lever.

  10. #30
    Superbike Twin dazthephot's Avatar
    Join Date
    Apr 2012
    Posts
    207
    Quote Originally Posted by ride4fun View Post
    I haven't given up on this yet. Going to try reverse bleeding to ensure the system is completely air-free.
    Hope that works for you. I tried that too to no avail. My MOT garage knows about the brake problems and is sympathetic so as long as I don't turn up with no brake at all I get a pass. I can hold the bike for a hill start but I can't lock up the wheel.

  11. #31
    Baby Twin
    Join Date
    Oct 2015
    Location
    Retford
    Posts
    1
    Who every offered up hanging a can of paint on the brake pedal. It has worked! How long will this fix last?

    Bryn.

  12. #32
    Baby Twin
    Join Date
    Sep 2013
    Location
    Malaysia
    Posts
    53
    Quote Originally Posted by Bryn View Post
    Who every offered up hanging a can of paint on the brake pedal. It has worked! How long will this fix last?

    Bryn.
    will last about 1 month plus... for me it failed after going on my 2nd ride... sadly...

    finally I upgrade to an aftermarket rearset. permanently solved.

  13. #33
    Baby Twin
    Join Date
    Nov 2015
    Location
    Leszno
    Posts
    6

  14. #34
    Superbike Twin ride4fun's Avatar
    Join Date
    Oct 2009
    Location
    Hertfordshire
    Posts
    192
    Quote Originally Posted by ario80 View Post
    The outlet is in the position as the original fitted on the RSV, so why change it?

  15. #35
    Baby Twin
    Join Date
    Nov 2015
    Location
    Leszno
    Posts
    6
    Quote Originally Posted by ride4fun View Post
    The outlet is in the position as the original fitted on the RSV, so why change it?
    I thought that it is mostly the issue with the Aprilia pump having failures... Which Duc pumps do the job 1098, 750 ?

  16. #36
    Superbike Twin ride4fun's Avatar
    Join Date
    Oct 2009
    Location
    Hertfordshire
    Posts
    192
    Quote Originally Posted by ario80 View Post
    I thought that it is mostly the issue with the Aprilia pump having failures... Which Duc pumps do the job 1098, 750 ?
    The problem is a gradual degredation of braking performance, presumably from aeration within the master cylinder. Thorough bleeding helps, but it seems to be only a matter of time before the problem recurs; could be days, months or years. Also, the horizontal layout will never produce as much braking force as the vertically mounted solution, which does not seem to aerate through use.

    I fitted the master cylinder from a Ducati 1098, but although it is better, it still isn't a permant fix to the problem. I may end up going the rearset route, one day.

  17. #37
    Baby Twin
    Join Date
    Nov 2015
    Location
    Leszno
    Posts
    6
    @ride4fun

    OK, now I have the full picture. The vertical m/c will require a new set of pegs (lever) as well, correct?

  18. #38
    Superbike Twin ride4fun's Avatar
    Join Date
    Oct 2009
    Location
    Hertfordshire
    Posts
    192
    Quote Originally Posted by ario80 View Post
    @ride4fun

    OK, now I have the full picture. The vertical m/c will require a new set of pegs (lever) as well, correct?
    You will need rearsets to which the the master cylinder and reservoir will need to be mounted to, together with the brake light switch. A new brake line will also be required, probably. Aprilia Performance make some very nice rearsets, or you could try soucing some from an RSV4 if you are after an OEM look.

  19. #39
    Baby Twin Para's Avatar
    Join Date
    Apr 2016
    Location
    Ireland
    Posts
    20
    All the pictures are gone now from this Thread...

  20. #40
    Superbike Twin ride4fun's Avatar
    Join Date
    Oct 2009
    Location
    Hertfordshire
    Posts
    192
    Quote Originally Posted by Para View Post
    All the pictures are gone now from this Thread...
    Photobucket have changed their terms of use and I am not willing to pay what they are charging to facilitate third party hosting. I will find an alternative method and have this fixed soon.

Page 2 of 3 FirstFirst 123 LastLast

Similar Discussions

  1. Rear brake caliper & master cylinder
    By Andy333 in forum Classifieds
    Replies: 2
    Last Post: September 16th, 2011, 12:49 PM
  2. Replies: 0
    Last Post: April 15th, 2011, 08:28 AM
  3. Rear brake master cylinder heatshield
    By colinpp in forum Classifieds
    Replies: 7
    Last Post: February 6th, 2010, 02:48 AM
  4. Rear Brake Master Cylinder
    By BillyRea in forum Aprilia RSVR
    Replies: 5
    Last Post: September 14th, 2009, 11:12 AM
  5. Radial master cylinder upgrade?
    By solstice in forum Aprilia RSVR
    Replies: 2
    Last Post: September 9th, 2009, 02:48 AM

Search tags for this page

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •