User Tag List

+ Reply to Thread
Results 1 to 31 of 31

Thread: Pedal box set up

  1. #1
    Racer 4drmatt's Avatar

    My 1st Project
    My 2nd Project
    Join Date
    Jun 2007
    Location
    Bedford
    Age
    37
    Posts
    2,079
    Thanks
    69
    Thanked 29 Times in 29 Posts

    Pedal box set up

    Anyone know somewhere in the bedford/milton keynes area I can get my bias pedal box set up and how much would it cost???

    it's bolted in, but I think it should be set up professionaly rather than by me guessing my way through it

  2. #2
    Remember the camper......? Decade Plus User
    Turbosport Moderator
    mk1matt's Avatar

    My 1st Project
    My 2nd Project
    My 3rd Project
    Join Date
    May 2005
    Location
    essex
    Age
    49
    Posts
    7,616
    Thanks
    70
    Thanked 63 Times in 60 Posts

    Re: Pedal box set up

    Set up what???? The bias????
    Just crank it onto the front fully and leave it alone
    Ps what brakes are you running?

  3. #3
    Racer 4drmatt's Avatar

    My 1st Project
    My 2nd Project
    Join Date
    Jun 2007
    Location
    Bedford
    Age
    37
    Posts
    2,079
    Thanks
    69
    Thanked 29 Times in 29 Posts

    Re: Pedal box set up

    my dad and i fitted it and the pedal hardly moves at all when you push it...

    i've never done anything with brakes before so have no idea how to sort it, but I can pass on any advice to him.

    just got standard discs on the front until i get paid some more.

  4. #4
    Remember the camper......? Decade Plus User
    Turbosport Moderator
    mk1matt's Avatar

    My 1st Project
    My 2nd Project
    My 3rd Project
    Join Date
    May 2005
    Location
    essex
    Age
    49
    Posts
    7,616
    Thanks
    70
    Thanked 63 Times in 60 Posts

    Re: Pedal box set up

    And standard drums on the back?????
    With that set up with what i have read on here you would want it pretty much on full front bias.
    That would mean wind the bias bar so that the bearing inside the pedal moves over to the side that the front master cylinder is. If that makes sence
    You are deffinatly better off having more brake force on the front than the rear

  5. #5
    Racer 4drmatt's Avatar

    My 1st Project
    My 2nd Project
    Join Date
    Jun 2007
    Location
    Bedford
    Age
    37
    Posts
    2,079
    Thanks
    69
    Thanked 29 Times in 29 Posts

    Re: Pedal box set up

    cheers

    yep. still standard drums on the back for the min.

    that seems to make sense. i will have a play around with it tomorrow

  6. #6
    Racer Decade Plus User

    Join Date
    Sep 2006
    Location
    chesterfield derbyshire
    Age
    48
    Posts
    2,162
    Thanks
    68
    Thanked 142 Times in 135 Posts

    Re: Pedal box set up

    if you want to know how to set up the box properly look on rally design website, everything you need to know.

  7. #7
    Racer 4drmatt's Avatar

    My 1st Project
    My 2nd Project
    Join Date
    Jun 2007
    Location
    Bedford
    Age
    37
    Posts
    2,079
    Thanks
    69
    Thanked 29 Times in 29 Posts

    Re: Pedal box set up

    Quote Originally Posted by oldskoolrools View Post
    if you want to know how to set up the box properly look on rally design website, everything you need to know.
    thanks

    didn't know they had a techtips section on their site!

  8. #8
    Racer 4drmatt's Avatar

    My 1st Project
    My 2nd Project
    Join Date
    Jun 2007
    Location
    Bedford
    Age
    37
    Posts
    2,079
    Thanks
    69
    Thanked 29 Times in 29 Posts

    Re: Pedal box set up

    This is doing my head in

    I'd quite happily pay someone else to do it, but I don't know where I could go as I don't have a trailer and the car can't be driven.

    I am struggling to make and sort of adjustment. At the moment the pedal is as high as it can physically go and has almost no travel. This means the brakes don't really work at all. I think the problem might be that on the rear master cylinder there is enough thread gone through (circled bit on the image below - stolen from rally design) I have tried turning the bar round as to thread more of it in, but I couldn't grip the bar tight enough (even with mole grips) for it to turn. I spent the whole day yesterday trying to sort it, and got nowhere. Can I adjust it on the car or does the pedal box need to come out?


  9. #9
    Way too much free time Decade Plus User Retromotorsport's Avatar
    My Race Car
    Join Date
    Mar 2004
    Location
    Harlow, Essex
    Age
    55
    Posts
    14,285
    Thanks
    318
    Thanked 173 Times in 164 Posts

    Re: Pedal box set up

    If you take the pedal box out someone can set it up for you on the bench

  10. #10
    Racer 4drmatt's Avatar

    My 1st Project
    My 2nd Project
    Join Date
    Jun 2007
    Location
    Bedford
    Age
    37
    Posts
    2,079
    Thanks
    69
    Thanked 29 Times in 29 Posts

    Re: Pedal box set up

    Quote Originally Posted by Retromotorsport View Post
    If you take the pedal box out someone can set it up for you on the bench
    OK... I took out the pedal box, got it set-up and fitted back into the car (not by me)... bled up the fronts... pedal seemed ok so far... bled up the back, but the pedal started to get really hard to push and once it was fully bled up the pedal was really high and had almost no travel... this was no good. We made adjustments so it was fully biased to the front and had the same.

    I was then told that you should always bleed the longest part of the system first so we drained all the fluid out and started again with the back and then the front... pedal still really hard and no travel...

    We orginally had 0.625 m/c to the fronts and 0.750 m/c to the rears as these are the sizes the pedal box came with. Then I read a post by retromotorsport on OSF saying that you should have the larger cylinder to the fronts. So I thought it's worth a try but we still have the same result.

    Now my line of thinking is that because it's standard drums on the back that it might need a smaller m/c or maybe they both need changing??? I have no idea really. I bought this pedal box for engine bay space and to be a bit more "futureproof" for when I want to upgrade/sell, but will it work with standard discs at the front and standard drums at the back??? Or maybe it could be a crap pedal box??? (got from ebay, don't know the brand of pedal box) I'm really lost so any tips would be very helpful

  11. #11
    Decade Plus User
    Turbosport Subscriber
    Dave's Avatar

    Join Date
    Oct 2003
    Location
    Cheshire
    Posts
    19,588
    Thanks
    141
    Thanked 670 Times in 494 Posts

    Re: Pedal box set up

    Just thoughts, so don't take it as expert.
    Is the rear line straight to the drums, ie. not through a hydraulic handbrake?
    Does the mc look new and unused, or could one of the seals have come adrift? I seem to remember reading a similar problem somewhere (with standard mc) and it was suggested the seals had come off stopping the pressure releasing.
    Even with really tiny rear slave cylinders the pressure should release shouldn't it?

  12. #12
    Moderator+ Decade Plus User
    Turbosport Subscriber
    Turbosport Moderator
    dangerousdave's Avatar

    My 1st Project
    Join Date
    Oct 2002
    Location
    London
    Age
    37
    Posts
    15,132
    Thanks
    65
    Thanked 255 Times in 248 Posts

    Re: Pedal box set up

    Or could it be that you have never had non servo brakes before so arent used to the feel? The pedal will be hard with little travel, thats just how they are.


  13. #13
    Racer 4drmatt's Avatar

    My 1st Project
    My 2nd Project
    Join Date
    Jun 2007
    Location
    Bedford
    Age
    37
    Posts
    2,079
    Thanks
    69
    Thanked 29 Times in 29 Posts

    Re: Pedal box set up

    Quote Originally Posted by dangerousdave View Post
    Or could it be that you have never had non servo brakes before so arent used to the feel? The pedal will be hard with little travel, thats just how they are.


    I did think that, but I'm sure it's supposed to move than it does... I mean the car won't actually stop even when really forcing the pedal down. There's probably and inch travel if that...

    Quote Originally Posted by Dave_Roberts View Post
    Just thoughts, so don't take it as expert.
    Is the rear line straight to the drums, ie. not through a hydraulic handbrake?
    Does the mc look new and unused, or could one of the seals have come adrift? I seem to remember reading a similar problem somewhere (with standard mc) and it was suggested the seals had come off stopping the pressure releasing.
    Even with really tiny rear slave cylinders the pressure should release shouldn't it?
    The line is straight to the drums...

    The m/c definately looks new, but I will check it over to see if something has come adrift

  14. #14
    Remember the camper......? Decade Plus User
    Turbosport Moderator
    mk1matt's Avatar

    My 1st Project
    My 2nd Project
    My 3rd Project
    Join Date
    May 2005
    Location
    essex
    Age
    49
    Posts
    7,616
    Thanks
    70
    Thanked 63 Times in 60 Posts

    Re: Pedal box set up

    Ok dont take this the wrong way.............But you have got the pipes round the right way on the master cylinder?

    If so are you saying that the pedal goes hard after an inch of travel but is NOT locking any of the wheels?

  15. #15
    Racer 4drmatt's Avatar

    My 1st Project
    My 2nd Project
    Join Date
    Jun 2007
    Location
    Bedford
    Age
    37
    Posts
    2,079
    Thanks
    69
    Thanked 29 Times in 29 Posts

    Re: Pedal box set up

    Quote Originally Posted by mk1matt View Post
    Ok dont take this the wrong way.............But you have got the pipes round the right way on the master cylinder?
    don't worry about me taking it the wrong way i'm pretty sure they are on the correct way round, but I will double check later...

    Quote Originally Posted by mk1matt View Post
    If so are you saying that the pedal goes hard after an inch of travel but is NOT locking any of the wheels?
    yep... tis hurting my brain

  16. #16
    Racer 4drmatt's Avatar

    My 1st Project
    My 2nd Project
    Join Date
    Jun 2007
    Location
    Bedford
    Age
    37
    Posts
    2,079
    Thanks
    69
    Thanked 29 Times in 29 Posts

    Re: Pedal box set up

    can someone tell me if this is correct... I think it is, but just want to check
    Attached Thumbnails Attached Thumbnails d3ae_1.JPG‎  


  17. #17
    Moderator+ Decade Plus User
    Turbosport Subscriber
    Turbosport Moderator
    dangerousdave's Avatar

    My 1st Project
    Join Date
    Oct 2002
    Location
    London
    Age
    37
    Posts
    15,132
    Thanks
    65
    Thanked 255 Times in 248 Posts

    Re: Pedal box set up

    Yep sounds about right, you should see that the one for the reservoir is bigger than the brake line out

  18. #18
    Remember the camper......? Decade Plus User
    Turbosport Moderator
    mk1matt's Avatar

    My 1st Project
    My 2nd Project
    My 3rd Project
    Join Date
    May 2005
    Location
    essex
    Age
    49
    Posts
    7,616
    Thanks
    70
    Thanked 63 Times in 60 Posts

    Re: Pedal box set up

    Yep thats right
    So if your pedal is going rock solid without aplying the brakes you must either have a fluid lock(two pipes connected togethermaybe) or the actual bias bar/pedle is hitting something. (even with air in the system it should do some breaking )

  19. #19
    Racer Decade Plus User andypipe's Avatar
    My Race Car
    Join Date
    Jan 2003
    Location
    Harlow/Walthamstow
    Age
    54
    Posts
    3,104
    Thanks
    7
    Thanked 31 Times in 29 Posts

    Re: Pedal box set up

    What calipers have you got on the front and what size cylinders


    Rallying is a cure for Insommnia

    Click on the picture to find out how I,m doing

    www.snaglets.com

  20. #20
    Racer 4drmatt's Avatar

    My 1st Project
    My 2nd Project
    Join Date
    Jun 2007
    Location
    Bedford
    Age
    37
    Posts
    2,079
    Thanks
    69
    Thanked 29 Times in 29 Posts

    Re: Pedal box set up

    got 0.750 to the fronts with standard calipers... one is an old one, one reconditioned... got new pads in both, but not sure what. not sure if these would matter though...

    I was hoping to sort it out with standard brakes first and then get something more fancy when I have the money (hate buying stuff on credit)

    really confusing me

    i've checked everything is connected up correctly and i'm sure pedal/bias bar isn't hitting anything. maybe it's fluid lock, but the pedal is fine when either the fronts or the rears are bled up seperately, it's just when they are both bled up it's rock hard. I know it's not me being a pussy pressing the pedal either, it just won't budge! Anyway, I've got all weekend to play about so fingers crossed I will get it sorted

  21. #21
    Racer 4drmatt's Avatar

    My 1st Project
    My 2nd Project
    Join Date
    Jun 2007
    Location
    Bedford
    Age
    37
    Posts
    2,079
    Thanks
    69
    Thanked 29 Times in 29 Posts

    Re: Pedal box set up



    after spending the last 2 months trying to sort it out I have given up.

    thanks for all the comments and tips, but I really can't be bothered anymore. i'm going to try and find a local company who can collect my car and sort it out next week and if not my car will be up for sale as I really need a car I can drive and don't have space/money for two cars

  22. #22
    World Champion Decade Plus User alladdin's Avatar

    My 1st Project
    My 2nd Project
    Join Date
    May 2005
    Location
    s.wales
    Age
    60
    Posts
    9,200
    Thanks
    167
    Thanked 446 Times in 432 Posts

    Re: Pedal box set up

    when you are hard on the pedal, is the bias bar between the 2 cyl horizontal ish or is it well skewed with the front m/c going in most ?

  23. #23
    TURBOSPORT SPONSOR Turbosport Sponsor TJM's Avatar

    Join Date
    Jul 2004
    Location
    Bridgend, Vale Of Glamorgan
    Age
    54
    Posts
    644
    Thanks
    1
    Thanked 38 Times in 32 Posts

    Re: Pedal box set up

    Can you just confirm what master cylinders you have going where?

    I see from a post above 0.750" to the front so what have you got going to the rear.

    Normal set-up is smaller diameter master cylinder to the front to apply higher pressure (ie 0.625") and depending upon size of rear brakes and usage 0.700" or 0.750" to the rear?

    Regards
    Tim

  24. #24
    Racer Decade Plus User Roger Miller's Avatar
    My Race Car
    My 1st Project
    My 2nd Project
    My 3rd Project
    Join Date
    Jan 2003
    Location
    Australia, Adelaide, South Australia,
    Age
    58
    Posts
    2,897
    Thanks
    2
    Thanked 44 Times in 39 Posts
    Take it Easy....

    Roger Miller

    Works-Escorts = http://rsmotorsport.com.au/

  25. #25
    Way too much free time Decade Plus User Retromotorsport's Avatar
    My Race Car
    Join Date
    Mar 2004
    Location
    Harlow, Essex
    Age
    55
    Posts
    14,285
    Thanks
    318
    Thanked 173 Times in 164 Posts

    Re: Pedal box set up

    Guess these are needed here too ...




  26. #26
    Racer 4drmatt's Avatar

    My 1st Project
    My 2nd Project
    Join Date
    Jun 2007
    Location
    Bedford
    Age
    37
    Posts
    2,079
    Thanks
    69
    Thanked 29 Times in 29 Posts

    Re: Pedal box set up

    Quote Originally Posted by alladdin View Post
    when you are hard on the pedal, is the bias bar between the 2 cyl horizontal ish or is it well skewed with the front m/c going in most ?
    I think it might be straight at the moment. I have had it both going to the front more and going to the rear more when I have had it set up differently to try and figure it out. I will go back out in a bit and film it so I can check

    Quote Originally Posted by TJM View Post
    Can you just confirm what master cylinders you have going where?

    I see from a post above 0.750" to the front so what have you got going to the rear.

    Normal set-up is smaller diameter master cylinder to the front to apply higher pressure (ie 0.625") and depending upon size of rear brakes and usage 0.700" or 0.750" to the rear?

    Regards
    Tim
    I have larger one to the front (0.750) and smaller to rear (0.625)

    I get the same problem with them the other way around though

    Thanks for the link... Checking it out now.

    Quote Originally Posted by Retromotorsport View Post
    Guess these are needed here too ...
    I'm completely sold on the m/c sizes thing, and I will double check the bar is not hitting the housing

  27. #27
    Tyre Kicker

    Join Date
    Jun 2020
    Location
    Centurion, South Africa
    Age
    53
    Posts
    2
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Re: Pedal box set up

    Quote Originally Posted by 4drmatt View Post
    can someone tell me if this is correct... I think it is, but just want to check
    I'm sure that's the wrong way around?

  28. #28
    World Champion Decade Plus User meXEco's Avatar

    My 1st Project
    My 2nd Project
    Join Date
    Mar 2003
    Location
    TRURO
    Age
    52
    Posts
    5,250
    Thanks
    246
    Thanked 155 Times in 148 Posts

    Re: Pedal box set up

    Quote Originally Posted by Piet MK2 View Post
    I'm sure that's the wrong way around?
    No-that is the correct way.


    '68 1100 Deluxe-bog stock soon to be a twincam rep.


  29. #29
    Tyre Kicker

    Join Date
    Jun 2020
    Location
    Centurion, South Africa
    Age
    53
    Posts
    2
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Re: Pedal box set up

    I would think that the pressure point would be at the end of the cylinder as the piston push that direction. That's how the ones on my pedal box works.

  30. #30
    Pole Position Decade Plus User
    Turbosport Administrator
    Miniliteman's Avatar

    Join Date
    Feb 2004
    Location
    the Netherlands
    Posts
    4,888
    Thanks
    38
    Thanked 611 Times in 558 Posts

    Re: Pedal box set up

    12 years later and let me think the issues have gone or the car has gone !

  31. #31
    World Champion Decade Plus User meXEco's Avatar

    My 1st Project
    My 2nd Project
    Join Date
    Mar 2003
    Location
    TRURO
    Age
    52
    Posts
    5,250
    Thanks
    246
    Thanked 155 Times in 148 Posts

    Re: Pedal box set up

    Well you either have it wrong or completely different type cylinders.
    Click on the 2nd pic:

    https://www.merlinmotorsport.co.uk/p...67620-gmc-12-r


    '68 1100 Deluxe-bog stock soon to be a twincam rep.


+ Reply to Thread

Bookmarks

Posting Permissions

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