VANCO Big Brakes and U Turn steering

[camojeep88]

Camo, I keep forgetting to ask what you used for a top hat?

I used the wilwood 171-2233 which is a 2 inch offset and just had it drilled for correct bolt patern

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[camojeep88]

I used the wilwood 171-2233 which is a 2 inch offset and just had it drilled for correct bolt patern

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Also with a .81 x 12 rotor

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[RCP Phx]

I am not so certain. I'm keeping an open mind on this. The Willwoods do have a smaller pad but their ratio of piston area to pad area is smaller than the VANCO or WJ. I think they may have higher clamping force, I just don't know if the pad area provides sufficiently higher friction.

Also, a sliding caliper with pistons on one side will probably need double the piston area of an opposing piston design. It could be that the Willwood's pads run a lot hotter and there is less safety margin in the maximum weight and speed of the vehicle.
In college this would have been the type of question I would have actually enjoyed answering in an applied-mathematics exam. I might have a go later but I will have to do it in SI units (Newtons) and convert the answer.

Wilwood will dis-agree with you on piston size and piston count. They do not count the opposite side pistons in their calculations, the clamping force is considered the same as a floating caliper. They will recommend a larger piston until you are having pedal travel issues.

 

[Vince]

That's interesting. I can understand clamping force being considered the same between the two caliper types, equal and opposite forces. But surely clamping pressure on the back of the pads will be different (force x area)?


It's going to be better than a stock setup, so will be at the least as safe as that.


Going off topic slightly, anyone had any experience with a Pro-Cut on car brake lathe? I am waiting for my new set of Black Magic pads to arrive and I am intending to have my discs skimmed before fitting them.

 

[RCP Phx]

That's interesting. I can understand clamping force being considered the same between the two caliper types, equal and opposite forces. But surely clamping pressure on the back of the pads will be different (force x area)?


It's going to be better than a stock setup, so will be at the least as safe as that.


Going off topic slightly, anyone had any experience with a Pro-Cut on car brake lathe? I am waiting for my new set of Black Magic pads to arrive and I am intending to have my discs skimmed before fitting them.

You nailed right there, a floating does prove a "better feel" over a floating caliper with less pedal travel. What gets real interesting is two different size pistons (same side) for even better pad uniform pressure.

 

[RCP Phx]

This was the caliper I was originally looking into with a stagger piston size and a large pad area. https://www.wilwood.com/Calipers/CaliperProd?itemno=120-13230&appid=0

 

[techno1154]

Here are some photos to give you an idea of what exactly is going on

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That is indeed very interesting. I had a similar setup from GoJeep. http://gojeep.willyshotrod.com/

I have since replaced the rotors and calipers keeping only the mounting brackets. With only very slight modifications to the brackets, my XJ have been fitted with rotors and calipers from the first generation Jeep WK.

 

[camojeep88]

This was the caliper I was originally looking into with a stagger piston size and a large pad area. https://www.wilwood.com/Calipers/CaliperProd?itemno=120-13230&appid=0

Thats the caliper they use for the kit and I thought about using it as well and making a bracket to be able to use it but I was told the way this is designed it will fit 15 inch rims where that one wont

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[SlowXj]

So I'm sure everyone has heard of the 4link calculator right? Well there's also a break calculator made by the same people. You can find it on busted knuckle off-road website.... It's free and simple to use. There's a video explaining it as well. Might get y'all a starting point.

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[RCP Phx]

So I'm sure everyone has heard of the 4link calculator right? Well there's also a break calculator made by the same people. You can find it on busted knuckle off-road website.... It's free and simple to use. There's a video explaining it as well. Might get y'all a starting point.

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A link would be good as I searched the entire site and did not find it!

 

[SlowXj]

https://bustedknuckleoffroad.com/products/brake-design-calculator?_pos=1&_sid=541b5f764&_ss=r


If y'all need help with it find their youtube page.

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[01classicxj]

Also love the Vanco BB kit for 16" wheel's. That, plus the Durango MC upgrade made a huge difference in my stopping power on 33's.