hydraulic hand brake and fiddles

[Heath]

Been looking at options for my rear brakes. Have got the majority of the bits for the disc conversion but havent got the calipers yet. Was wondering how hard it would be to rig up a hydraulic handbrake using the fluid in the rear section of the brake system. Is this possible or just too much work. To get a cable brake system to work looks like a pain (routing cables and general lack of room with the shocks and arms in the way unless I sling the calipers down on the bottom half of the axle, of course this puts them in the worst position for gettin damaged.

I saw some fiddle brakes earlier in a thread and wondered if it would be possible to do the same for both rear discs (another master cylinder feeding both rear). Also later on would it be possible to put additonal masters in after the hand brake master or am I better splitting the rears and using two hand brake mechanisms to both hold when parked and 'fiddle' the brakes individually?

Also what modification is required to the "Master" on the booster to push the extra volume of fluid?

Just thought I would get another set of front brake calipers for the rear and make spares easy.

Heath

[skid]

firstly, this is for your trials truck right, not road legal right.


secondly, I had rear wheel brakes on my old 40 and a hand brake lever in between them with a bar welded onit so it was under both levers, pull up handbrake lever and it would lock both rear wheels.


other thing I wanted to do but never got round to his to plumb in a valve that you switch.

so you depress brake pedal, then flick valve which holds pressure in either end or both depending on how ya plumb it up.

Dan Cowper did this but found the cheap valve to be no good and ended up paying well over $100 for a decent one from enzed


SKID

[Heath]

I had thought a return to centre 3 way switch on the gear lever going to a solenoid/cylinder for each side would be cool. But it would be a bitch if the connections failed and of course it is either on or off, no feathering the brakes.

I know there are line lockers that do what you said from the states. Press the brake then push in the lock. Take foot off the brake and the pressure is held in the lines (front rear or whatever). Lift lever and brakes are released.

Yeah this is for the trials toy (if it ever gets there) so not road legal so no WoF worries - Yahhoooooooo!

Can any hydraulic cylinder like a clutch cylinder be used? It would need to have a flow through when open though I guess.

[Pedro]

I had thought a return to centre 3 way switch on the gear lever going to a solenoid/cylinder for each side would be cool. But it would be a bitch if the connections failed and of course it is either on or off, no feathering the brakes.

I know there are line lockers that do what you said from the states. Press the brake then push in the lock. Take foot off the brake and the pressure is held in the lines (front rear or whatever). Lift lever and brakes are released.

Yeah this is for the trials toy (if it ever gets there) so not road legal so no WoF worries - Yahhoooooooo!

Can any hydraulic cylinder like a clutch cylinder be used? It would need to have a flow through when open though I guess.

the hillman imp clutch master is the cylinder to use, it has 5/16 unf and 3/8 unf ports, or vice versa, i have welded up mitzy master cylinders and drilled and tapped the require thread in.

Cheers

[Heath]

Quick thought along the brake lines (so to speak).

The covers around the disks. Are they really needed? Mine are full of mud and crap and I havent used it, so I guess it was from its last owners last outing. Wondered if they could be removed and left off (the rear will have non anyway) to make cleaning easier or is this a bad idea?

Heath

[LOLYF]

I've never run them on the hilux, front or rear.
It certainly makes cleaning easier, and you don't get stones stuck between them and the rotors.

[PuddleJumper]

Hi Heath, Thought of running a seperate pair of callipers for the fiddles. I (had/have) them on my 410. Just got a pair of trailer master cylinder, made some levers had some spare callipers lying about (you know me! ) modified my original calliper brackets then plumbed it all up. They worked awesome - Could lock a rear wheel with minimum effort. I also have a hydaulic handbrake.. I was given the valve years ago. This is my handbrake - Like Skid says: Push your foot on the brake flick the lever and there on. Another benefit? i found was you could drive along flick the lever and of course only the front brakes will work... Is this a benenfit i dont know!

Ps if you need some suzuki callipers i may have some floating around

[Heath]

Cheers Scott, I'll bear it in mind for later.

This week I will try and make up a tool for removing/torquing up the bearing retainer. Instead of using a punch and cold chisel to wreck/remove it. Got a front hub (and engine mounts complete for another idea - captive mounts) for $50 so have a little to keep me busy at work ... ah ... I mean during my breaks and during the weekends.

[Rotazuk]

Its late and I can't be bother checking the rules but I believe the trials rules state something like , park brake independant to main braking system . So this to me rules out a line locker etc , as it uses the main brake system fluid . ie if you loose the fluid you have no emergency brake , not sure if thats what the rule is intended for thou as I believe autos can get around it as they have the park selection and I would not want to slip it into park underway . If its absolutely necesary thou i guess you would

Chris

[skid]

Its late and I can't be bother checking the rules but I believe the trials rules state something like , park brake independant to main braking system . So this to me rules out a line locker etc , as it uses the main brake system fluid . ie if you loose the fluid you have no emergency brake , not sure if thats what the rule is intended for thou as I believe autos can get around it as they have the park selection and I would not want to slip it into park underway . If its absolutely necesary thou i guess you would

Chris

theres a couple of trials rigs with the valve system for a handbrake and they haven't been pulled up yet.


a few years ago they use to check ya handbrake at scrutineering, but folks with shitty handbrakes would use 4th gear instead of first for the handbrake test to cheat it.

now I don't think they check them at all

SKID

[cool__bananas]

now I don't think they check them at all

my truck doesnt even have a waste of time handbrake i just use P

[turoa]

rules say you MAY have an INDEPENDENT parking brake system. Doesnt say you cant have a parking brake system in teh main line. you just have to make sure the brakes are operate like they are supposed to.

[skid]

my truck doesnt even have a waste of time handbrake have you even had a girlfriend, or are you from the same stable as Jerry


i just use P that would explain a lot, you do know its illegal aye

[Heath]

rules say you MAY have an INDEPENDENT parking brake system. Doesnt say you cant have a parking brake system in teh main line. you just have to make sure the brakes are operate like they are supposed to.

Just checked also and it would appear this is one of those 'Gray' rules where how you read it. I would think they mean you can have a handbrake seperate from the main system (or no handbrake), but it could also mean that if you want it MAY be part of the main system.

I'll just put it on the list of things to check next time I contact the scrutineers. (list is getting bigger)

[skid]

rules say you MAY have an INDEPENDENT parking brake system. Doesnt say you cant have a parking brake system in teh main line. you just have to make sure the brakes are operate like they are supposed to.

Just checked also and it would appear this is one of those 'Gray' rules where how you read it. I would think they mean you can have a handbrake seperate from the main system (or no handbrake), but it could also mean that if you want it MAY be part of the main system.

I'll just put it on the list of things to check next time I contact the scrutineers. (list is getting bigger)

just do what ever you like, coz it seems everyone else is doing that.

for years there has been problems with the rule book and the wording of it

lots of may and must and how you interpret the ruling can be completely different to how others interpret it.


the sport is getting bigger and folks are spending more money and pushing the boundaries more and then if you think someone else is cheating or similar, you start protesting and then the shite really hits the fan.

now we've got committee members overuling the stewards decisions on the day and the stewards are getting dis-heartened and it seems that there is no structure in place anymore.

is it a good look for a scrutineer to be drinking all day at a trial and then making a decision on the safety of a rollcage after a roll. I don't think so.

the sports rules need a major overhaul and there needs to be some more discipline handed out to those who think htey can continuously argue with those in charge and get away with it.

fuk it, thats my rant over for the day, don't even get me started on the bloody sparc shite


sorry for the thread jack heath


as you were

[cool__bananas]

Skid your a tard but jared just has one of the hydrolic valves to block off brake pressure in the back

[skid]

Skid your a tard

yeah I know, but its hard trying to be like you and James

[Heath]

Skid your a tard but jared just has one of the hydrolic valves to block off brake pressure in the back

What class? I would imagine the basic classes (a,b and g) are tighter on the rules than the super mods and super prods. But that is a guess of course.

Worst case scenario is they will tell me it isnt good enough and I will have to remove it before the next trial. Or maybe they will tell me to put it on the trailer and go away, in which case I would do just that and join another form of motorsport ... maybe.

[cool__bananas]

hes in f class, pajero (doddzee), they wont stop you from trialling just because your got a valve as a handbrake

and skid, im not as tarded as james