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-   -   Another Brushless REVO conversion (https://www.rc-monster.com/forum/showthread.php?t=4959)

BlackedOutREVO 04.19.2007 11:59 AM

SWEET!

i like that paint job! and looks like a buggy that aint bl.......lol

Shark413 04.27.2007 02:55 AM

Updates
 
Since I originally put this Brushless Revo together I have made some significant updates. I have added Tekno extended a-arms to strech out the wheelbase, added RPM carriers, Center diff, rear brake, brake linkage, updated the engine from a Novak 6.5 to a 4.5 and I moved the ESC to the rear. I have the 1/8 diffs and Will add them as soon as I have time.

http://i142.photobucket.com/albums/r...13/updated.jpg


http://i142.photobucket.com/albums/r...k413/top-1.jpg
Top view, showing rear brake linkage.

http://i142.photobucket.com/albums/r...3/bottom-1.jpg
Bottom view, motor mount utilizes the stock nitro engine mount.

http://i142.photobucket.com/albums/r...k413/diffs.jpg
1/8 diffs

Trick440 04.27.2007 03:21 PM

Looks good man. .. Is that the traxxas 2055 servo for the break? What else is hooked to it .. the red servo arm linkage.. whats that doing?

GriffinRU 04.27.2007 03:29 PM

Quote:

Originally Posted by Trick440
Looks good man. .. Is that the traxxas 2055 servo for the break? What else is hooked to it .. the red servo arm linkage.. whats that doing?

rear brake link

Shark413 04.27.2007 04:39 PM

Trick440, good eye. Yeah that is a stock Traxxas 2055, borderline I know. But for braking duties it is ok. I have $600+ dollars worth of servos in my road cars, nitro Revo, truggy and buggy, plus a few spares so this is all I could afford right now. At least I have a Hitech HS-965MG on the steering, which is again borderline but adequate for now. And as GriffinRU pointed out the red servo arm works the rear brake. Since I am running a center diff you need a front and rear brake.

jollyjumper 04.27.2007 04:46 PM

i've been wondering how brakes work with center diff, when you brake on your motor?

BrianG 04.27.2007 05:56 PM

Brakes on the CD work just like they do when using the motor to run the CD. Since you are braking on the CD, the end with the least amount of traction will have more of the braking force - which is usually the rear end because of brake dive. This tends to make steering quite sharp.

jnev 04.27.2007 08:37 PM

Very nice work!!

Shark413 04.28.2007 12:53 AM

jollyjumper, since I am using the Revo Nitro tranny, reversing the motor won't brake the car, it will just freewheel. So the disc brakes are necessary to stop the car. You need front and rear brakes because the center diff basically splits the drive train in two (front and back). I have the ESC set to only have forward speed and brake, no reverse. But the ESC brake action works the brake servo via a splitter (when the ESC sends a brake command the motor stops, but the tranny free wheels, but the signal is also sent to the brake servo, via the splitter, which works the likage connected to the front/rear disc brakes. It has very strong, consistant braking action that can easily be finetuned. I much prefer this setup (disc brakes) to the ESC/motor braking action in a normal electric car.

BrianG 04.28.2007 02:57 AM

Using mechanical brakes is better for the ESC too. However, I'm lazy and don't want to find extra room for the servo. :)

AAngel 04.28.2007 03:12 AM

Man, all of these revo threads are really making me want to do one myself.

BrianG 04.28.2007 03:24 AM

What's that? I think I hear a Revo faintly saying "AAngel, convert meeeee". :)

AAngel 04.28.2007 03:27 AM

Man, I think I hear something buzzing in my ear.

Serum 04.28.2007 03:29 AM

Thought my mind that was playing tricks on me..

convert me.. convert me.. listen to that poor thing!.. It's allmost begging!

I am going to work on mine today.. Thinking about getting those GRP wheels for her.

AAngel 04.28.2007 03:45 AM

I've been checking out that guy on ebay selling brand new rolling chassises for less than $300. On the other hand, I have a friend that got out of RC and he has a practically new Revo 3.3 with the center diff and I could get that for under $200.

Ohh, you guys are killing me. Actually, it'll be my wife that's killing me if she walks into my shop and sees another RC vehicle.


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