Another Brushless REVO conversion - Page 3 - RC-Monster Forums

Shark413 · 12.24.2006, 03:35 AM

BrianG, as you may already know the 40T mod 1 spur comes very close to the chassis. There really isn't much room for a larger Mod 1 spur gear. With a 48P spur you can probably squeeze in a slightly bigger (numerically more teeth) gear because they are physicaly smaller. I may go that route eventually, if track testing shows I need the gear (lower) change. The slots on the mount are pretty much as close to the edges as you could make them. As I said you would have to drill and tap new screw holes to be able to use smaller Mod 1 pinion/spur gears. The accelleration is fine, I was just a little worried about the top speed, which would require a smaller spur/pinion. I need to radar my nitro Revo to see how they compare, I don't trust the Traxxas advertisments (40+ mph). Also, I don't think the gear box was shifting into 2nd gear. So I need to adjust the transmission shift point to make it shift sooner, to see if this makes a differnce. Overall I am very happy with the conversion, because with one as complicated as this it normally takes several prototypes to get it perfect. And there is a lot of fine tuning that still needs to be done (gearing, close ratio gears, shifting adjustment, more powerful batteries, different tires, battery placement, CG adjustments, etc.). This will require track time and that will have to wait until the new year..

Regards

Serum · 12.23.2006, 05:45 AM

Why do you put the batteries further to the rear? It's a heck of a mass, sitting relative high and far to the rear.

Serum · 12.25.2006, 06:51 PM

My current mounts make the motor sit so low, that it hangs on the bottom of the L plate. Works like a charm. Low CG and a good support.

Serum · 12.28.2006, 11:33 AM

I would not use a delrin as material for a mount. No heat transfer and too flexible IMO, i tried a nylon mount, of 10 mm thick, but it was too flexible. perhaps you can drill holes in it and push a 7075 aluminum tube in it for support.

Serum · 12.28.2006, 11:37 AM

Sorry, i didn't realized it was a rear support, i thought it was meant as an entire mount.

Brian; if it can hold a nitro motor it can hold an electric as well.

BrianG · 12.28.2006, 11:41 AM

Quote:

Originally Posted by Serum

Brian; if it can hold a nitro motor it can hold an electric as well.

Well, I was just thinking about the instantaneous stresses of an electric motor vs a Nitro.

coolhandcountry · 12.28.2006, 11:47 AM

You trying to say it has more power brian?

Serum · 12.28.2006, 11:50 AM

I hear you Brian, but the nitro head is sticking out about 4 times as much.

coolhandcountry · 01.01.2007, 09:48 AM

Cool!!!!
Poor nitro revo getting neglected. :D

Shark413 · **Update -** 01.02.2007, 10:28 PM

I still can't get over how fast and how well my Brushless Revo handles.

And this is with a mild Novak HV 6.5 and regular NiMh batteries. I

changed out the original battery mounts with some aluminum plate, the

new plates allow me more battery mounting options and are much

stronger. Some updated photos.

Modified the battery trays so they would be more modular and stronger.

Body finished, has not seen the dirt yet.

After a day at the local track.

Shark413 · 01.03.2007, 03:51 PM

I just got around to cleaning my EVO and I noticed that the left rear shock rod end was broken. This is the same exact part that I broke on my Nitro Revo. At that time I thought it was because of the hot exhaust pipe causing the Rod end to melt. But Since the EVO doesn't have a hot exhaust pipe I guess it may be a design flaw. I changed the rod end out with an alloy part.

BrianG · 04.18.2007, 07:41 PM

Yeah, I had a little flex with just using the chassis (not using b0gh0s' mount). I got the one in the RCM store (which uses the stock Nitro mount) and the spur is in great shape which tells me that the mesh is solid (no flex). Even though the Nitro mount is nothing special, the way it wraps underneath to the bulks really helps shore up the chassis in that area.

b0gh0s; nothing against your mount at all - I think it's still very nice. I just think some way to strengthen the chassis would help. Don't forget; some of the motors we use are a little heavier and longer than the HV motors, so there is more stress on the mount, which is transferred to the chassis.

jnev · 04.18.2007, 11:53 PM

Sweet revo shark. Did you get any pictures while you were at the track?

Shark413 · 04.19.2007, 02:01 AM

RC, those pictures were taken a while back and no I didn't get any track pictures. But the next time I go I will try to get some pictures and video. I filmed video of my nitro truggy but forgot about the Evo because I was having so much fun with it. Since the pictures above I have gone back to the stock Revo truck body so everyone knows what I am driving. I have also added the following:

Tekno extended wheelbase rear a-arms
Hitech HS-985MG steering servo.
Single steering servo mod
Steering Mod
Alloy parts for all shocks (caps, spring retainer, rod ends)
Alloy tie rods and push rods
Removed one spacer from push rod to lower the chassis
Close ratio gears and FOC
Spektrum receiver and telemetry module
50wt & silver springs front, 60wt & blue springs rear
RPM carriers
Novak HV 4.5 motor
Alloy pivot post
Ti pivot balls
23mm hubs

04.19.2007, 02:12 AM

well u cant brag with out pics ;)
LOL

sounds sweet! looks awsome!