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Revo Center Dif FOC

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Been a loat of talk about it at the Traxxas board. If you run or plan to run an RD Racing Quick Turn, forget it. You won't have any brakes. Using the center dif, you will only have front braking unless you can McGyver someway to have a rear disc, and then it still won't be like a buggy or truggy with differential braking anyway. The center is pretty cool and looks to be well made. Alot of guys were bitchin about how much he's askin' and said they could do it cheaper. However the best someone could come up with was maybe $15 cheaper but they didn't account for how much time they would have to put into it. If braking wasn't an issue, I'd probably be all over it, but I love my QT!
 
arnt the RD quick turns on the front drive shaft so you still get brakes on the rear
 
hyper 7 pro said:
arnt the RD quick turns on the front drive shaft so you still get brakes on the rear
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the quick turns are used to disable braking to the front wheels. when this happens all the braking force is applied to the rear.

I'm gonna shoot in the dark here because I do not have a revo... I assume the brake disk is forward of the tranny. The tranny is basically a solid axle so when brake is applied it slows down both ends. The quick turn is a one way bearing that is placed between the brake disk and the front diff. when brake is applied it still slows the rear but the one way continues to spin without resistance thereby disabling front braking. but in the case of the center dff it sort of acts as a one way during braking except the placement is now to the rear of the brake disc. when brake is applied it slows the front but the rear will not be slowed because of the "diffing" action. if you had both the quick turn and the center diff FOC you would have no braking whatsoever because there would be diffing action between the brake disc and differentials of both ends.
 
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Lessen pretty much summed it up, not bad for not having a Revo! With a center dif you will not have any rear braking since the disc is to the front.
 
jetmechG550 said:
With a center dif you will not have any rear braking since the disc is to the front.
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Great job Sharpie!

The statement above is reason enough to me not to get one. I'm sure glad you guys are thinking for me today. I may go for the quick turns in due time. I'm going to get the FOC taken care of first.
 
This is from the seller to explaine the brake problem. IMO, I think he got his point there.

There is no rear brake problem. 80 percent of the braking is done with the front due to weight transfer. That leaves only 20 percent that has to go through the diff. You will never lock the rear up though. It brakes almost identical to a stock revo on dirt. It out performs a quick turn hands down.
 
I don't see how he can say that since with front braking only you'll plow like a mutha! With the QT you can turn on a dime (and pick it up too if your a tightwad) cause the front wheels freewheel through the corner when your normally braking.
 
MyJeep said:
This is from the seller to explaine the brake problem. IMO, I think he got his point there.

There is no rear brake problem. 80 percent of the braking is done with the front due to weight transfer. That leaves only 20 percent that has to go through the diff. You will never lock the rear up though. It brakes almost identical to a stock revo on dirt. It out performs a quick turn hands down.
Click to expand...

I understand his point, although I don't particularly agree with his ratios... that will depend on many included factors. I feel that it depends on the driver and his/her style of driving. The buyer just needs to decide which will suit him better. If it were me I would rather have the center diff then the QT.
 
You have to justify your product somehow.

He is right in the fact that most braking is done from the front. This is the nature of the beast with a single in line brake. Optimal is a duel braking system where you can set the bias to your environment.

Given the choice, I would rather have Rear braking only rather then front only.
 
Ya, but when the brake slams the front drive shaft the whole front end will bogg down and probably dig into the dirt. I had the sam problem with My Mammoth. I took apart the diff to add a new spur gear set and neglected to set the rear brake right. Everytime I hit the brake the front end would hit the pavement and flip the damn thing.
 
Soooo, it sounds like someone needs to invent a dual brake set up for the Revo?!? Hmmmmmm.... I'll check mineout tonight. I just had an idea. It look like the Vantage CF chassis might be the trick for adding this.
 
You know Vantage has a Extended CF chassis coming out? Might be easier to do on an extended chassis that stock depending on where it's extended.
 

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