Author Topic: Cutting/turning brakes  (Read 2778 times)

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Junker80

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Cutting/turning brakes
« on: Dec 08, 2018, 12:45:18 PM »
I'm looking to run cutting brakes on my pickup. I have one third member with an ARB in it, the other will be fitted with a non-selectable due to cost, possibly welded. I would like your opinions on which end to run the arb in conjunction with split cutting brakes (locking one individual wheel, not line lock holding the pare) for the best maneuverability. I do not have any driveline disconnect nor do i plan on getting one.
To elaborate a little more, my goal is to have better turning ability (rather than font dig specifically, although not apposed to it), by having 3wd (one axle locked and driving, the other axle wheel brake locked on one side and tire moving on the other with the open ARB diff).
Front seems like the best for tight turns but ineffective at front digs.
Rear better at front digs but less effective at tight turns everywhere else.
Anyone have thoughts?
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Re: Cutting/turning brakes
« Reply #1 on: Dec 08, 2018, 01:41:33 PM »
having a spool in the rear with rear cutting brakes isn't going to work, and having a spool in the front is going to suck.
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Junker80 [OP]

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Re: Cutting/turning brakes
« Reply #2 on: Dec 08, 2018, 02:18:49 PM »
having a spool in the rear with rear cutting brakes isn't going to work, and having a spool in the front is going to suck.

True. Welding it up is an option but if the non arb is going up front it will be a Detroit or lockright.
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blackdiamond

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Re: Cutting/turning brakes
« Reply #3 on: Dec 08, 2018, 02:24:43 PM »
True. Welding it up is an option but if the non arb is going up front it will be a Detroit or lockright.

Aussie Locker in the front and the ARB in the rear.  You have to have an open differential option for the brake cutting to work I would assume.
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Junker80 [OP]

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Re: Cutting/turning brakes
« Reply #4 on: Dec 08, 2018, 02:49:40 PM »
Aussie Locker in the front and the ARB in the rear.  You have to have an open differential option for the brake cutting to work I would assume.

As far as i know, yeah. I guess it comes down to which end cutting brakes are most effective or fun. There has got to be guys with front engine buggies and cutting brakes on here that could chime in.
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Re: Cutting/turning brakes
« Reply #5 on: Dec 08, 2018, 02:57:06 PM »
i'd eat the three point turns, spool the rear and ARB up front :cheese:

Cutting brakes aren't exactly popular on the front? probably for good reason. maybe give a run down of your build and what type of stuff you're wheeling?
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Junker80 [OP]

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Re: Cutting/turning brakes
« Reply #6 on: Dec 08, 2018, 03:11:24 PM »
i'd eat the three point turns, spool the rear and ARB up front :cheese:

Cutting brakes aren't exactly popular on the front? probably for good reason. maybe give a run down of your build and what type of stuff you're wheeling?

I only see them on the front of comp rigs that already have them rear. I hear front cutters work great with rear steer, and well enough without, but i was hoping for some more feedback before i set up my arb.

My rig? Its a fist gen POS, hence the name Junker80 :gap:. Its stock currently except for the engine. Its going to be an all round rig that will be driven to the trails as a 2nd gen runner with a 22re isnt going to tow it. Plan is for around 2"s of lift and 37-8" tires, RUF and 56"s, duels cases over built 8" axles blah blah, for Oregon wheeling. We have some tight trails is the reason for cutting brakes, rather than comp level rocks. And it looks really fun.
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joeyf

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Re: Cutting/turning brakes
« Reply #7 on: Dec 08, 2018, 04:55:26 PM »
You need a  rear disco. The rear is to light to lock up just one tire, its going to just drag it.

Junker80 [OP]

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Re: Cutting/turning brakes
« Reply #8 on: Dec 08, 2018, 05:23:47 PM »
You need a  rear disco. The rear is to light to lock up just one tire, its going to just drag it.

Ill be running rear disks for sure.
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Re: Cutting/turning brakes
« Reply #9 on: Dec 09, 2018, 05:21:37 PM »
Ill be running rear disks for sure.


rear disco as in a transfer case disconnect. I don't think the cutting brake will work too good unless you drop some more money
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Gnarly4X

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Re: Cutting/turning brakes
« Reply #10 on: Dec 10, 2018, 05:23:31 AM »
I'm looking to run cutting brakes on my pickup. ....
Anyone have thoughts?

As you described for your type of wheeling and your vehicle design plans, cutting brakes will be a complete waste.  :disturbed:

Gnarls.   :twocents:
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Re: Cutting/turning brakes
« Reply #11 on: Dec 10, 2018, 01:25:29 PM »
Now then.
If i was to run cutting brakes i would ARB front and rear.
I would use ABS units from a Lexus 400 VVTi and plumb all four corners into it and actuate each corner electronically. Big levers in the cab are :pokinit:.
You will also need to run either a front d/c or have a tcase such as an atlas or a 80 series cruiser with a center differential, otherwise everything will be fighting everything else.
If you ran the ABS unit i would wire it to disconnect the ARB simultaneously respective to the wheel which you were locking, otherwise run them permanently locked.
If you ran the ABS unit and learned to drive it you wouldnt need any lockers.
this can also be done with a 4 slice electro hydraulic spool block with or without hydro boost. it can also be done by other means.
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Junker80 [OP]

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Re: Cutting/turning brakes
« Reply #12 on: Dec 10, 2018, 05:30:54 PM »
As you described for your type of wheeling and your vehicle design plans, cutting brakes will be a complete waste.  :disturbed:

Gnarls.   :twocents:
I was too vague. I meant which end of the truck would be most beneficial. It looks fun and I run tight trails mostly.

rear disco as in a transfer case disconnect. I don't think the cutting brake will work too good unless you drop some more money
Gotcha, I didn't catch what you meant obviously. still want to to give it a try.

Now then.
If i was to run cutting brakes i would ARB front and rear.
I would use ABS units from a Lexus 400 VVTi and plumb all four corners into it and actuate each corner electronically. Big levers in the cab are :pokinit:.
You will also need to run either a front d/c or have a tcase such as an atlas or a 80 series cruiser with a center differential, otherwise everything will be fighting everything else.
If you ran the ABS unit i would wire it to disconnect the ARB simultaneously respective to the wheel which you were locking, otherwise run them permanently locked.
If you ran the ABS unit and learned to drive it you wouldnt need any lockers.
this can also be done with a 4 slice electro hydraulic spool block with or without hydro boost. it can also be done by other means.

Do not want to spend that much on lockers first, as already stated, I like big levers and dislike electronics, and not true, whole thread on pirate about running Detroit front arb rear with rear cutters for front digs and no disco, works for them. Some interesting stuff, some went over my head for sure there. This is about which end of the truck turning brakes would be most useful, hopefully from someone with experience with them.
Yota with tires and stuff.

joeyf

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Re: Cutting/turning brakes
« Reply #13 on: Dec 10, 2018, 07:15:32 PM »
I run Detroit rear arb front, disco and cutting brakes. Like I mentioned before, you are going to find out fast that your truck is to front heavy and will just drag the rear if you don't lock up both tires. You have no plans on running the disco so you are going to have to gutt that truck and get it as close to 50/50 weight bias as possible to work.

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Re: Cutting/turning brakes
« Reply #14 on: Dec 11, 2018, 10:57:12 AM »
I run Detroit rear arb front, disco and cutting brakes. Like I mentioned before, you are going to find out fast that your truck is to front heavy and will just drag the rear if you don't lock up both tires. You have no plans on running the disco so you are going to have to gutt that truck and get it as close to 50/50 weight bias as possible to work.

A 50/50 bias is measured when it's sitting on a flat horizontal plane.  When you are wheeling, how often is your truck NOT seeing a 50/50 bias!!  :dunno:

Gnarls.
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Re: Cutting/turning brakes
« Reply #15 on: Dec 11, 2018, 04:04:33 PM »
Yes quite a bit. But if it didn't matter and doesn't inprove performance, why do people building rigs/buggy's from the ground up worry about weight distribution so much. 🤔

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Re: Cutting/turning brakes
« Reply #16 on: Dec 11, 2018, 04:15:31 PM »
Yes quite a bit. But if it didn't matter and doesn't inprove performance, why do people building rigs/buggy's from the ground up worry about weight distribution so much. 🤔

because racecar
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Re: Cutting/turning brakes
« Reply #17 on: Dec 11, 2018, 06:28:13 PM »
Sounds like big mike is liking his cutting brakes in his new tacoma.  :yupyup:
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Junker80 [OP]

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Re: Cutting/turning brakes
« Reply #18 on: Dec 11, 2018, 09:36:04 PM »
Sounds like big mike is liking his cutting brakes in his new tacoma.  :yupyup:

What's his setup?
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Re: Cutting/turning brakes
« Reply #19 on: Dec 12, 2018, 06:54:50 AM »
What's his setup?

Selectable lockers front and rear, triple cases, and a heavy azz tacoma

The install is on this page. Not actually that much info.

http://board.marlincrawler.com/index.php?topic=100408.msg1153954#msg1153954
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