losi 8 mount with mech brake

[jlast]

Can i get a bit more explaination on this setup, limitations on gearing and then the servo linkage setup. Details on it in the store didnt quite make sense to me :)

visual examples would be Excellent lol

[RC-Monster Mike]

Your gearing choices will be limited based on motor diameter vs the brake disc. You can only get so small a pinion to mesh with the spur gear while avoiding the brake disc. If using a large diameter motor, you would need a larger pinion gear in order to allow the motor to clear the brake disc.
Likewise, you would need a servo and appropriate linkage to actuate the brakes. in order to install a servo, you need a place to install it. Our motor mount will accomodate the front brake setup(required to clear the spur gear, which is reversed with our motor mount as well as others).

[jlast]

gotcha, anyone done this setup ? all i seen in the forums was motor brake.

looking at cc2200kv setup, do we have an idea what will work and what wont for gears ? i would like to pick them up same time as the mount.

servo mount i think i can handle, linkage concern is with the flipped diff and if stock will work ? or modified stock :)

[RC-Monster Mike]

Most find mechanical braking is more trouble(and weight and complexity) than its worth. The center diff will naturally bias braking exactly as it does during acceleration(technically the exact opposite), so mechanical bias is somewhat redundant.
Many nitro converts think they need it(because in nitro, the center diff cannot be slowed directly, neccesitating mechanical brake and its inherent bias), but later learn that it usually isn't worth the trouble. If it was such an advantage, 1/10 electric would likely have adopted it years ago. Having said that, you are surely welcome to use mechanical brakes and form your own opinion -or perhaps try a hybrid setup(mechanical rear brakes and 3rd channel mixing esc brakes for bias control). The stock front brake linkage can be installed on the motor mount and will work just like it does normally.
The 2200Kv MMM is an excellent choice. Pinion selection will vary with input voltage and track conditions, but I usually shoot for high 30s in my truggy for calculated speed(about the same as the nitros and plenty fast for most tracks).

[jlast]

i plan on trying it, and do want to mess with 3rd channel setup with brake bias, as well as be able to set and have bias while also under throttle.

I was looking more at what gears were known not to fit with the 2200 setup using mech brake, along the lines of motor/brake disc clearence. So i can plan accordingly when selecting spur and pinions.

[MetalMan]

IMO, if you can swing the hybrid rear brake setup with a mini servo (like Hitec 5245MG) then it's worth it. A year or two ago Mike and I had this discussion, and it was concluded that I was gonna try it out at some point. The perfect buggy for this came along, the SH ZMXB-8 (it's also the LRP buggy), since it has the rear brake mounted on the rear differential.

Long story short, my buggy has had this setup running reliably for well over a year now. With my radio (Nomadio React) I am able to use the thumb wheel to alter the strength of the rear mechanical brake at any time. So if I want the rear to slide more, I dial it in.

This setup has proven quite effective for me, because I can pitch the buggy sideways and get on the throttle like you could with full mechanical brakes. And it's nice too because the motor still does a lot of the braking, where the motor brake strength can also be adjusted on the fly.

Since my buggy, I've set up 3 other Z-Car vehicles (two buggies and one truggy) with this same hybrid rear mechanical brake. None of the owners own radios with the same capabilities of mine, so they have to manually adjust brake bias. So far as I know, all of them have been satisfied with the hybrid brake.