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linear actuators (i think)
blakep82 - 3/4/10 at 11:00 PM

any idea where i might find something like this?

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Description

it would need to pull down when no electric is applied, and realese or extend when 12v is applied.

i'm sure there is something out there to do this.

if it can fit into the handbrake able bit of a sierra caliper then it would make a good electric handbrake, but it would need to pull in when no electric is applied to make it work

anyone seen anything?

macspeedy - 3/4/10 at 11:15 PM

theres gate accuators or sat dish accuators

blakep82 - 3/4/10 at 11:23 PM

interesting
will have a look. there must be something out there the perfect size for the job
cheers

dave r - 4/4/10 at 07:31 AM

what are you trying to do ??

MikeRJ - 4/4/10 at 09:48 AM

Think about the kind of forces you would need to apply, with no current present. This would need an enormous spring, and this arrangement would mean any fault condition would apply the handbrake on full, not great if you happen to be on a motorway at the time.

If you must use a electric handbrake (poxy things IMO) then I'd suggest you use an OEM actuator and cables, but I'd certainly recommend you go for a traditional manual handbrake.

blakep82 - 4/4/10 at 11:00 AM

fair enough, was just a hungover idea i had.

prawnabie - 4/4/10 at 11:04 AM

Most oem systems use a worm gear so that when the cables are wound in nothing can unwind them

blakep82 - 4/4/10 at 12:11 PM

don't busses have pneumatic systems that use air to hold the brakes off?

i probably will go with normal cables, but thats far from ideal too. this chassis wasn't designed for handbrakes lol

Duncan Mould - 4/4/10 at 12:37 PM

probably in a door lock mechanism, drivers door as the others are only actuators. I am sure that this system is present on central locking systems

indykid - 4/4/10 at 02:09 PM

quote:
Originally posted by Duncan Mould
probably in a door lock mechanism, drivers door as the others are only actuators. I am sure that this system is present on central locking systems

the actuaution force required for a handbrake and for a door lock are far from simliar

i'd look at a proper linear actuator using a screw, but it will need power to activate and deactivate.

canibalise one off a scenic
tom

Benzine - 4/4/10 at 02:16 PM

quote:
Originally posted by blakep82
any idea where i might find something like this?

Description
Description






HTH! XD

oh and you spelt actuator wrong, it's 'actu8r' m8

jacko - 4/4/10 at 05:27 PM

Don't know if it would work but how about a servo off a starter motor

Bus brakes have about 80psi air to make them work

speedyxjs - 4/4/10 at 05:29 PM

Thats an interesting idea Blake. Would suit my car perfectly too!