Line locks

[KarlVP]

Do they make "reverse" line locks? What I am looking for is when the power fails, the brakes are applied. I have searched and what I found are the opposite. Most have a magnet that when power is applied, it holds the brakes, I want the reverse of that.

 

[KarlVP]

It's either that, or I am doing this.

or you could use the technique I use on my oldest chevy step van
bread truck. I drilled a large hole through the floor right over a
U joint. Whenever I have to park the thing or need to hold it on a
hill, I just drop a tire iron down through the hole and engage the
U-joint yoke. Takes a little finesse to get it back out when
it's time to take off on a hill but it sure does beat the cost of
replacing all the emergency brake stuff the previous owner took off.

 

[skrause]

E-brakes are for pussies. :flipoff: Best bet for what you're talking is probably a seperate brake like a driveline brake. I'm personally not a fan of the ones out there though, poor design and shitty caliper.

 

[KarlVP]

Driveline / pinion brakes are definately not what I want. Esp driveline. What happens when you break a drivline and you need to get out to asses the situation?

I just want to use my existing brake system, but if I leave it on "overnight" I don't want it to drain the battery and fail. I'd rather the magnet stay open with power, so if the power fails, it locks the brakes up.

 

[skrause]

Driveline / pinion brakes are definately not what I want. Esp driveline. What happens when you break a drivline and you need to get out to asses the situation?

4wd, you have braking on both ends. So unless you lose both drivelines or blow the transfercase you still have braking action.

I just want to use my existing brake system, but if I leave it on "overnight" I don't want it to drain the battery and fail. I'd rather the magnet stay open with power, so if the power fails, it locks the brakes up.

Seriously, a good quality ball valve plumbed inline. Seen it done, seen it work.

 

[KarlVP]

Seriously, a good quality ball valve plumbed inline. Seen it done, seen it work.

Yeah, GaryTJ has that. I've sat in his rig and felt / listened to the pressure bleed off. Not for me.

 

[fprbrooks]

Yeah, GaryTJ has that. I've sat in his rig and felt / listened to the pressure bleed off. Not for me.

Well what do you think a Line lock is? If you think a good quality hydro ball valve will bleed off and not hold you, then good luck with the line lock.

 

[CrustyJeep]

WTF is wrong with a mechanicall line lock?

 

[Berne]

5000 psi ball valve...


love mine......


holds pressure for weeks...

 

[crash2]

I have been running 3 line locks for about 4 yeras---no probs :;

 

[Travis1]

you do realize that a line lock doesn't apply the brakes right?

Press brakes, flip switch, release brakes, brakse stay on.

Which means if you find a normally closed (power keeps it open) line lock, the second you loose power, you loose brakes because the brake pressure won't get out to the cylinders to do the job. unless you find some sort of normally closed check valve operation. But even then, if you decide you need to move your dead rig, having no means of releasing the pressure on all 4 tires (without cracking bleeders) will be problematic.

I would recommend a high quality ball valve.

 

[KarlVP]

I like this check valve you speak of.

Where do I find one of those.

 

[CrustyJeep]

you do realize that a line lock doesn't apply the brakes right?

I'm starting to think that is what he meant.......

Karl, let's get this straight. Your rig is sitting there with a good battery and no brakes applied. Battery goes dead, brakes are magically applied. ??

 

[Not Jobless]

Karl, let's get this straight. Your rig is sitting there with a good battery and no brakes applied. Battery goes dead, brakes are magically applied. ??

Well Duh...what are ya blonde? Isn't that the way they are suppose to work :flipoff:

 

[Binder]

I think "fail safe" is the term your looking for. Only fail safe brake system I've ever seen is some air brakes. Some of these guys are on the right track though, even if the lock was fail safe you would still need to pump the pedal to get pressure into the system and yes you can pump pressure through a LL when it's turned on-closed.

 

[KarlVP]

I understand the fact that you have to set a line lock.

But what if I set my line lock "overnight" and my battery, for whatever reason... dies. I thus have no more e-brake applied. If the line lock required power to hold open, it would be good no matter what.

 

[boxboy]

So put in a manual lock and an electric lock, over night set the manual lock

 

[Trevor]

What you want is a Mico Lever Lock. They been doing these things for about a billion years. You can do a google search for Mico if ya want.

http://www.awdirect.com/awdirect/ca...id=8737&secid=73&linkon=subsection&linkid=211

 

[Blueleader]

What you want is a Mico Lever Lock. They been doing these things for about a billion years. You can do a google search for Mico if ya want.

http://www.awdirect.com/awdirect/catalog.cfm?dest=itempg&itemid=8737&secid=73&linkon=subsection&linkid=211

I'd recommend that too. They're used a lot on older construction machinery, forklifts, etc. Very durable and easy to use. Probably the only bad part is that you have to mount it within reach of the driver seat and plumb hard lines to it. Kind of a hassle but worth the effort.

 

[CrustyJeep]

What you want is a Mico Lever Lock.

I think that's what Hip's got. Go look at his ya big tard :flipoff: