Inboard brakes?

duramaximizer

#1 Abuse Enabler ;)
May 4, 2008
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Is there any chance that this could be done up by the CV joints as a thought in decreasing stress on the outter CV shaft itself since in theory it is a lower mass that the shaft has to start after power breaking to build boost? (mainly truck pulling)
 

SRomans84

New member
Nov 6, 2008
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Angleton, TX
hummers run the rotors off of the pumpkin on each side, but I am not sure if you would have room for a decent sized rotor, pinion brakes are another option but they are basically an on off switch for your brakes
-Steve
 

malibu795

misspeelleerr
Apr 28, 2007
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in the buckeye state
HMMWV/H1 dont bounce when braking... they rock back and forth... also they tend to wear out the half shafts as well under hard frequent use

main reason the rotors are up on the dif is the planetarries gearset in the Hub/spindle. also keeps them out of water, dirt, sand, mud and other natural debrie. allowing the roters, pads and calibers to last longer.

if you want an inboard brake... mount them on the drive shaft either on the tail shaft or pinion. thus the brake force will be mulitplied by the ring and pinnon
 

Oilfield_Mafia

Im the ONLY Okie..
Jun 8, 2008
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Worlds Highest Hill
HMMWV/H1 dont bounce when braking... they rock back and forth... also they tend to wear out the half shafts as well under hard frequent use

main reason the rotors are up on the dif is the planetarries gearset in the Hub/spindle. also keeps them out of water, dirt, sand, mud and other natural debrie. allowing the roters, pads and calibers to last longer.

if you want an inboard brake... mount them on the drive shaft either on the tail shaft or pinion. thus the brake force will be mulitplied by the ring and pinnon

This works VERY WELL.. alot of rock racers are using this setup..

and My old Nitro 1/10th scale RC 4x4 truck had a dual caliper setup like this.. if you hit the brakes hard, it would endo..
 

SRomans84

New member
Nov 6, 2008
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Angleton, TX
driveline/pinion brake set ups are great for short runs but they put a lot of stress on whatever part of the driveline you attach them to, definately wouldn't run them on the street.. lots of brake fade once the rotor literaly lights up.

hummers (H1) have portal hubs not planetaries, the brakes are where they are because of the multiplication of the brake force before the portal same idea behind driveline brakes because the gear reduction happens after the brakes (I still think they stop like crap, the 12,100 gvw stop better and have larger rotors and shafts). Moog axles have portals as well and use a rather large rotors and twin calipers on the 406's and bigger, 404 use drums I think

don't use diveline brakes if you do much street driving they are very touchy and dangerous
-Steve
 
Jun 28, 2007
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NE Pa
hummers run the rotors off of the pumpkin on each side, but I am not sure if you would have room for a decent sized rotor, pinion brakes are another option but they are basically an on off switch for your brakes
-Steve

driveline/pinion brake set ups are great for short runs but they put a lot of stress on whatever part of the driveline you attach them to, definately wouldn't run them on the street.. lots of brake fade once the rotor literaly lights up.

hummers (H1) have portal hubs not planetaries, the brakes are where they are because of the multiplication of the brake force before the portal same idea behind driveline brakes because the gear reduction happens after the brakes (I still think they stop like crap, the 12,100 gvw stop better and have larger rotors and shafts). Moog axles have portals as well and use a rather large rotors and twin calipers on the 406's and bigger, 404 use drums I think

don't use diveline brakes if you do much street driving they are very touchy and dangerous
-Steve


X2
 

duramaximizer

#1 Abuse Enabler ;)
May 4, 2008
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Edgerton, Ohio
The disadvantage is there is no preload on the axles, giving them a shock when you release the brakes.

I do not think you would see any advantage in doing this.

I didn't think about that situation. I had to think about it twice after I read it.

Nevermind. It's not a completely bad idea pre-diff. But post diff just sucks.

I was just trying to think of how to keep the IFS and keep it happy.

The more braking power that is added to the hub brakes, the more likely the CV's are to break, No?

So the secret is decreasing rotating mass in the front.

Here is the better question. Will increasing the rear brakes' holding capacity still put more stress on the front cv? I think it will some, but not as much.



Just trying to get a grasp on the CV's and spooling turbos etc etc for maximum effort.
 

JoeyD

WTF
Apr 21, 2008
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Here is the better question. Will increasing the rear brakes' holding capacity still put more stress on the front cv? I think it will some, but not as much.

Why would doing anything to the rear brakes add stress on the front? It will take some of it away. The problem is the fronts are designed to do more of the work due to weight shifting as your stopping. Put to much on the rears and they will lock up
 

TNRGreene

Kicked to the Curb
Sep 2, 2006
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Bradenton, Florida
Why would doing anything to the rear brakes add stress on the front? It will take some of it away. The problem is the fronts are designed to do more of the work due to weight shifting as your stopping. Put to much on the rears and they will lock up

I believe we are talking sled pulling :woott:
 

JoeyD

WTF
Apr 21, 2008
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Add a transfer case brake if you want to add more holding power to the rear without doing much to the front.