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 pete wood
A.k.a.: figure itout
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| posted on January 16th, 2004 at 02:23 PM |
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wide five discs
I've got a set of John Shermon's wide five discs and I'm having issues with getting a good pedal. The calipers seem ok, but the pedal
sucks.
I'm using a twin master cylinder and t3 wide five drums on the back,
Any ideas?
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MickH
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| posted on January 16th, 2004 at 02:30 PM |
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Did you bleed the Master cylinder? Sound like there is still air in the system. May require another bleed.Get someone to help if possible.:bounce
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pete wood
A.k.a.: figure itout
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| posted on January 16th, 2004 at 02:48 PM |
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wide five?
done all that, even pulled done one of the calipers and greased it up with rubber grease,
However, still not good.
Driver's front caliper seems to be where the issue is.
Do VWs have an issue in this area?
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MickH
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| posted on January 16th, 2004 at 03:30 PM |
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Not that I know of???/Are all the lines/hoses OK??Must be something simple. Are you pressure bleeding the system or gravity bleeding???It will need to
be pressure bled. Keep the post to the top and there might be more advise tonight from others.Good luck.:jesus
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pete wood
A.k.a.: figure itout
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| posted on January 16th, 2004 at 03:37 PM |
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wide five discs?
All the lines except for the main one are brand new and the main line is good and there are no leak.
What do you mean by pressure bleed?
Do you mean by pumping the pedal?
Coz that's what we've done so far.
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MickH
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| posted on January 16th, 2004 at 03:46 PM |
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Yep...pump the pedal,loosen the bleeder nipple to get shot with brake fluid and retighten bleeder before raising pedal again. Does not take much air
in system(if thats the problem) to make the brakes not work properly. Is the master cylinder in good nick?? Have you bled ALL the brakes or just the
front ones??:jesus
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matara
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| posted on January 16th, 2004 at 04:03 PM |
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Make sure your msater brake cylinder is one for disk brakes. The residual pressure in a drum brake master will make the discs drag.
Steve
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pete wood
A.k.a.: figure itout
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| posted on January 16th, 2004 at 04:37 PM |
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wide five discs?
the whole system has been bled, furthest to closest including the master cylinder, using the method you are talking about.
The master cylinder itself is a beetle / type3 dual circuit type. So it's made for front discs.
I really think the problem has to do with the calipers some how, but I don't know how to diagnose it properly.
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Baja Wes
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| posted on January 16th, 2004 at 04:58 PM |
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are the bleed nipples at the highest points on the calipers? On single nipple calipers they are made left and right. If you have them on the correct
sides the nipples will be at the tops. If they are on the incorrect sides the nipples will be at the bottoms. air rises.
the first bleed is always the hardest.
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pete wood
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| posted on January 16th, 2004 at 05:21 PM |
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wide five disc?
Yep Wes,
The nipples are on the top.
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SPRINTSTAR
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| posted on January 16th, 2004 at 05:37 PM |
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Has anybody heard of work progressing on the wide 5 brake set-up by Vintage Vee-Dubs? It was over two years ago when I saw it..looked absolutely
stunning and from memory, very reasonably priced and it didn't even increase the front track of the car!
al
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modulus
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| posted on January 16th, 2004 at 05:41 PM |
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Since you seem to have done the bleeding by the book, it might be worth checking that your driver's side disk is mounted correctly and not
running out of true; that would "knock off" the calipers and lead to a bad pedal.
Just spin the disk with a dial indicator on its outer face; at least you'll eliminate that as a cause.
hth
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pete wood
A.k.a.: figure itout
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| posted on January 16th, 2004 at 06:06 PM |
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Modulus
how common is the disc out of alignment problem?
I only ask because, every component on the brakes is new, except for the stub axle.
Does anyone have experience of John Sherman's set-up
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modulus
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| posted on January 16th, 2004 at 06:34 PM |
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| Quote: | Originally
posted by pete wood
how common is the disc out of alignment problem?
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It's unlikely, it would just be good to get it out of the way because:
a) - something's wrong and
b) - bleeding seems to have been done properly.
However, as Wes implied, having all sorts of new kit doesn't make bleeding easier, the first bleed becomes harder as a result, so this would
still be the number 1 suspect.
hth
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 vw54
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| posted on January 16th, 2004 at 07:35 PM |
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I think you will find thats the system is sucking air at one of the joints check tighten them all.
Aldo
| Quote: |
5 brake set-up by Vintage Vee-Dubs
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I am pushing it through cause the first set is going on my Orange Smoothieee... I worked out the brake lines today and Boris is pushing the machine
shop to get the new casting machined up as per the test sample.
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SPRINTSTAR
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| posted on January 16th, 2004 at 09:06 PM |
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Thanks Dave, after I saw the Vintage Vee-Dubs wide 5 brake set-up, I sold my 'crappy' Maicos. Any news regarding the 'track'
dimension (does it remain stock or wider since my last time at the shop)?
a
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Craig Torrens
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| posted on January 16th, 2004 at 09:41 PM |
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Does the shaft (adjustable) that goes from the pedal into the master cyclinder have a couple of mm of play before it pushes on the piston ?
Have you made sure that your rear wheel cyclinders are not leaking and that the shoes are adjusted ?
I'm assuming that you had a good pedal before ??
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whatnow
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| posted on January 16th, 2004 at 10:50 PM |
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i was told that it is a good idea to fill the brake light switch with fluid before fitting as bubbles can sometimes hang up in there and not bleed
out.
when i fitted sherman wide 5 discs on my car i found that the peddle had a fair amount of travel before it went hard, i attributed to the increase in
size of the piston in the calliper. also when you had some pressure on the brake pedal then stomped on it it wasn't solid, it was a little
rubbery. this was from the standard brake lines... when you had your head under the car you could see the rubber lines expanding.
hope this helps.
henry.
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vw54
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| posted on January 17th, 2004 at 06:18 AM |
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| Quote: |
'track' dimension (does it remain stock or wider since my last time at the shop
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Aldo i believe its going to be the same as stock but we will be measuring when the first set is fitted.
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pete wood
A.k.a.: figure itout
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| posted on January 17th, 2004 at 08:31 AM |
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wide five discs?
Hey Craig,
All corners have been progressively bled while the rubber lines were crimped.
The pedal was quite good until the last crimp (driver side front) was taken off and thats where it goes pear shaped.
The caliper itself has been pulled down a number of times.
First cleaned and then finally reassembled using brake rubber grease.
Their was some improvement, but it's still not what it should be.
Any more ideas.
Oh by the way, I want an increase in track for the buggy.
I'd be surpised if widened beams aren't illegal in NSW, so these brakes made for a good compromise. :thumb
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Baja Wes
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| posted on January 17th, 2004 at 10:23 AM |
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so is fluid coming out of it when you bleed it?
if not is the bleed nipple blocked? I had a wasp make a home in one of my bleed nipples and it took a while to find that as the reason of it not
bleeding cos it was so deep in the nipple I couldn't hardly see it.
must be something strange...
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pete wood
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| posted on January 17th, 2004 at 10:28 AM |
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wide five discs?
Plenty 'o' fluid, just a big dumb spongy pedal
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whatnow
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| posted on January 17th, 2004 at 12:23 PM |
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i had probs once as i unscrewed the bleed nipple too far and they were sucking in air past the threads as the fluid was bleeding out. the nipples were
only taken out a little off thier seats too.
just a thought.
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