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Help with brakes!

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808_maxx

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Okay I did a carb flip on my maxx. The problem is that the brakes seem alot weaker. I've tried all different types of settings with them, but they just don't grab like they used to. I even tried the RRP brakes and same thing, doesn't grab. Thanks guys.
 
There are a couple things you can do to help.

1. Obtain the Carbon Fibre brake disc by Traxxas (for the money I swear its the best)
2. Take the two long screws out that go into the tranny and zip off about 1-2mm of length with a dremel. This makes the brass push/spacer have to travel less distance when applying the brake.
3. Make sure you double/triple check your drivetrain for a weak area. When you lock up your new found brakes, you can possibly brake something lol

You can also substitute taking down a mm or two off the screws by just adding a second disc and a 3rd brake caliper.
 
brakes

Could it be that the servo isn't strong enough??? I have the RRP brakes, do those suck??? thanks again.
 
My brakes were also weak after the carb flip. What I did was get the carbon fiber disc, put springs between the calipers so I could adjust them closer without the brakes dragging, and replaced the brake/throttle servo with the stock steering servo which made a big improvement.
 
or you could run it into a curb when you want it to stop. J/k I never heard of this? so the linkage binds or something? Anyone got a picture so I could visually see what you are talking about. Not really important just curious.
 
No the linkage doesn't bind at all. I would post pics if I new how.

NCNitro-what kind of springs did you use??? Did it help alot?? got some pics???
 
Well here is a picture of my break setup after flipping the carb. I would guess that 808_maxx's looks similar.

61break_linkage2-med.jpg
 
I guess my ideas werent good enough.... lol

Just nip 1-2mm off of the screws!!! Start with 1mm off and see how you like it. You can test the throw without having to install the tranny. The brass part (forgive me I dont know what its called) has to extend away from the tranny to apply pressure to the caliper. If you reduce the amount of space that brass nipple has to travel, the tighter your breaking will be.

You can also adjust you linkages to where you just about have a little drag brake at idle.
 
I have the screws adjusted tight enough that there is drag brake, but it still doesn't grab. Maybe I should try the carbon brake disk instead of the RRP one. The RRP brake pads take up that space that you said to cut off.

Do you guys think it's the servo?? I'm using a Futaba s3003.
 
Before you start cutting on things you might try relplacing the flimsey brake tubing with the larger, stronger gas tubing. I had a similar problem and that fixed it. Mine will do foward flips if I ajust it just it to tight, and I am using the rrp disk setup.
 
I used a spring from a bic pen, the type you click to get the tip in or out. Cut about 4 coils off and put it over the screw between the calipers. By doing this you can adjust the calipers tighter without them binding when running. I dont have a pic but I will see if I can get one on tonight for you.

I also use a small piece of fuel tubing on the linkage as well. The longer the piece of tubing is the spongier the brakes will feel, I use about 1/2, maybe a little less on mine.
 
Okay so I fixed mine. I just messed around with i a little and got it pretty good, even without drag braking.

Hey mcvickj, did you fix yours??? :breakdown
 
It is OK. I have an afternoon bash session with a friend today. We will see how they perform.

Originally posted by mcvickj
Yeah I think so. I still do think the breaks are stiff enuff. I have an afternoon bash session with a friend today. We will see how they perform.
Click to expand...
 
I was going to post a new thread but I'll resurrect this one instead.

I'll echo NC here:

Originally posted by NCNitro
I also use a small piece of fuel tubing on the linkage as well. The longer the piece of tubing is the spongier the brakes will feel, I use about 1/2, maybe a little less on mine.
Click to expand...

The stock setup has a piece of fuel tubing a little over half an inch long that's used in the brake linkage as a snubber. Full brake servo throw compresses this snubber and applies moderate pressure to the brake disk(s).

I've cut about an eighth of an inch off this snubber and moved the linkage collars in to take up the slack. Full brake servo throw now applies significantly more force to the brakes. I was amazed at the difference that simple little change made.
 

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