My brushless HPI Nitro MT Project - Page 2 - RC-Monster Forums

GeeReg · 06.21.2006, 08:00 PM

*UPDATE*

Well it's finally together....or was.

Before the first battery pack...

Aaaand this is after the first pack...

Full throttle + Water pipe thing sticking out of the lawn = that

First impressions:

Well, it's FAST. This is my first real brushless other than my SS5800 in my T2. I was going to put the gps on it tomorrow but now I can't. From a dead stop if I nail it it'll veer to the left and I can't keep it straight.

It handles pretty well and seems to jump ok off of the tiny jump I had. I'm pretty happy so far. The controller was getting pretty warm though with not even a full pack ~135-140, the motor was maybe 130. I'll probably add fans eventually. It's geared 52/15 right now with the Road Rages.

Oh and it's pretty noisy, is that just the sound of mod1 gears? The mesh is good so I think that's just how it is.

It needs a few tweaks but overall I think it was a success! :dft012:

GeeReg · 06.22.2006, 01:23 PM

A question about the veering, I filled the front and rear diffs with 3 or 5000 wt silicon. Would that cause it? Or is it just the torque?

cart213 · 06.22.2006, 05:38 PM

It shouldn't be the torque causing it to veer. My MT2 doesn't veer, and my 540c-9L has a lot more torque than your 380c-6L. I'm not sure about the diff fluid. I just use grease in mine. How did you seal the diffs?

Btw, the gears are noisy on these, and not just the spur/pinion. A lot of the noise comes from the front and rear diffs.

GeeReg · 06.22.2006, 05:53 PM

I didn't seal them, but they haven't leaked as far as I know. I'll have to do more testing when I get it fixed.

squeeforever · 06.22.2006, 06:11 PM

It probably veers because your camber, toe-in/out is off or something of the sort.

GeeReg · 06.22.2006, 09:01 PM

That could be it, but it doesn't look off. Like I said, I'll have to do some more testing. Does anyone know of any place to still get the aluminum parts from? I only know one place and most of the parts are out of stock:

http://www.powerlineracing.com/index...S&Category=215

Mike.L · 06.22.2006, 09:24 PM

ya im also coverting but brushed,

Re~Mix · 06.23.2006, 12:23 AM

Try messing around with your radio trim settings and the like on camber and such, thats usually where any abnormal veering would come from.

cart213 · 06.23.2006, 12:42 AM

Ebay usually has some aluminum parts.

GeeReg · 06.23.2006, 08:04 AM

I'll try messing with it.

Yeah I found a good place on eBay that has most of them except the front arms and diff cases.

GeeReg · 06.27.2006, 10:32 PM

Another update:

Well it wasn't as successful as I orignally thought. Apparently going to full brakes from a fast speed causes the pinion/spur to grind, so it chewed up the spur a little. It looks fine but makes a terrible noise now. The problem is there's no slipper, it's just a gear that transfers to the front and rear diffs, so I'm thinking about switching to a slipper or maybe some kind of center diff from a buggy?

Even worse is now it's glitching no matter what I do. I've moved things, wrapped the receiver in foil, changed radios and batteries and it still does it. I'm using a Futaba 3PM FM and I tried an old Futaba PCM. The worst part is it started for no reason, it was fine one day and now this. The only thing I haven't done is try it in another location to see if something around here is interfering.

Oh well. :031:

cart213 · 06.28.2006, 11:12 AM

Sorry to hear about the glitching. That's always a pita. As for the spur, maybe you could use an MT2 slipper clutch? I'm not sure about the MT design, but it might be a direct fit.

GeeReg · 06.28.2006, 08:37 PM

That's what I was thinking so I'm trying to piece together the whole assembly by parts on Tower. If I can't fix this glitching though, the whole thing is a 5lb purple paper weight.

Thunderbruiser · 11:47 PM

nice truck...

GeeReg · 07.01.2006, 01:23 PM

Thanks but it's about to go in the garbage. It won't stop glitching. I've changed radios, the batteries, I've put the esc and motor in another car and it works fine. I've moved every component around on the chassis, I've wrapped the receiver in foil. I thought maybe it was the motor mount with the metal chassis acting like a big antenna into the system. I disconnected the motor from the mount and it still does it. I get about 75 feet away and it starts. The worst part is it WORKED FINE before. It's just plain interference because I don't need to touch the controls for it to happen, so it's not like the motor is causing a problem when running or anything like that. I just don't know what to do anymore.

Does anyone have ANY ideas?