hey guys, does anyone have a site or other information on how to make a set of pinion brakes for the 2.5 ton rockwell axles? i realize i can simply purchase them, but who has the extra money when they can be made. since there is no reason to reinvent the wheel if anyone has done this already could you pass along some tips

Pinion brakes for Rockwells are only $250... I bet with the time a labor you would put into making your own you would have more then that invested... :rolleyes:

Originally posted by Lowrangerider
Pinion brakes for Rockwells are only $250... I bet with the time a labor you would put into making your own you would have more then that invested... :rolleyes:

what he said :D

who has them for $250, is that a piece, a pair. let have some more info. i thought boyce wanted 400 each.

elf cruiser off of this board bought the brake kits from boyce. said it was a joke. a chevy half ton rotor and a bracket. daniel has done some you can check out his site at usa6x6.com (http://www.usa6x6.com)
he has some pics of the set up they are putting on a truck right now.

Making a pinion mounted brake is not very difficult..you can basically use any rotor(preferably a matched caliper and rotor for example chevy) and a basic 1/2 ton chevy caliper or even a car caliper...fab a bracket and and drill the rotor to the 4 bolt pattern on the flange...this all can be done for around 50 bucks ..hope this helps..

OK I gotta ask: How effective are those pinion brakes anyway? Yes I understand that you got gear multiplication on your side, but what if your axle is "open"? Or is a locker or spool a must? I just see a potential to be crossed up some where and the braked wheels are going to dangling in the breeze as-it-were. Am I out to lunch on this? Any body got any real experience with this?:confused:

check with boyce equipment. They have tons of 2.5 ton rockwell shit. including the brake setups. I cant remember off hand how much though. Boyce's prices have been going up really fast in the last few years..

:massey:

it was mentioned above that the boyce brackets were a joke. i don't want to pay 400 bucks for something that would take an hour to fab up in the garage. i work @ a parts store so the costs for the rotor and caliper are going to be a minimum. i understand that boyce is charging for the know-how, but i'd rather learn and make it myself. i just wanted to get some others opinion and expierence before i tackle it. keep the comments coming please.

Is heat buildup in the disk an issue with these setups? It seems it would be, since you're using a single 1/2 ton rotor on a truck that would usually have two 1 ton rotors.

Pete

Originally posted by dawhipp
OK I gotta ask: How effective are those pinion brakes anyway? Yes I understand that you got gear multiplication on your side, but what if your axle is "open"? Or is a locker or spool a must? I just see a potential to be crossed up some where and the braked wheels are going to dangling in the breeze as-it-were. Am I out to lunch on this? Any body got any real experience with this?:confused:

Dont have experiance but dont think it would matter. If the pinion is breaked and is not moving that means the ring gear is locked up and not moving as well. so if the ring gear is not moving then carrier is not moving, which means the spider gears cant move, which means axle shaft wont move, which means tires wont move which means you stop. I am thinking this is how it would work. The only ptoblem I see is if something in that chain breaks you could have some serous issues.

Matt

It should be just like when you put a Automatic transmission in Park, it locks the driveshaft just like a pinion break would, and a car with an open diff in park won't move (alright so it could move, it just won't roll. At least the wheels won't roll)

JYS

Originally posted by Junkyard Slug
It should be just like when you put a Automatic transmission in Park, it locks the driveshaft just like a pinion break would, and a car with an open diff in park won't move (alright so it could move, it just won't roll. At least the wheels won't roll)

JYS
but if a car with an automatic in park has an open differential, and a wheel is jacked off of the ground on an incline the car WILL move, the ring and pinion are locked, but the side gears and spider gears can still turn, and they will untill both tires are in contact with something to keep the tires from turning opposite directions.

Originally posted by CrazyHorse

but if a car with an automatic in park has an open differential, and a wheel is jacked off of the ground on an incline the car WILL move, the ring and pinion are locked, but the side gears and spider gears can still turn, and they will untill both tires are in contact with something to keep the tires from turning opposite directions.

Yes we all learned the ways of the differential in middle school.

Your detroits will act the same way because they don't engage until power is applied.

:D :D

Ian-

Originally posted by CrazyHorse

but if a car with an automatic in park has an open differential, and a wheel is jacked off of the ground on an incline the car WILL move, the ring and pinion are locked, but the side gears and spider gears can still turn, and they will untill both tires are in contact with something to keep the tires from turning opposite directions.


four words....lincoln locker and hydro steering....

Originally posted by onetonwillysands10



four words....lincoln locker and hydro steering....
1 2 3 4 5 :flipoff2:

Pete

here are a couple of people that have set ups that are great to talk to and have some details of what they have done on their pinion brakes. Jim Mace at teamzebra.homestead.com or Mark adkins. both are putting them together for I think $150-200 or less. Mark is doing mine right now and ill let you know how it turns out. I had him put it on the driveshaft side to avoid damage on rocks or ledges. marks#9184229948

there easy :D :usa: