My brushless Revo - RC-Monster Forums

BrianG · 08.06.2006, 08:23 PM

Nice motor and dogbones. ;)

Have you tried to fit a body on there yet? It looks a little on the wide side. That's actually why I'm limited on battery size on my V2 Revo. And as crazyjr says; either protect the inside of those batts or just use some velcro strips and wrap them across and around the batteries/holders. Interesting choice of material - nice, lightweight, and sturdy. It looks like the type of material used in some cutting boards. Where do you get that stuff?

Finnster · 08.06.2006, 08:38 PM

Quote:

Originally Posted by BrianG

Nice motor and dogbones. ;)

Have you tried to fit a body on there yet? It looks a little on the wide side. That's actually why I'm limited on battery size on my V2 Revo. And as crazyjr says; either protect the inside of those batts or just use some velcro strips and wrap them across and around the batteries/holders. Interesting choice of material - nice, lightweight, and sturdy. It looks like the type of material used in some cutting boards. Where do you get that stuff?

Yes, they are very nice. :)

The one side fits the body perfect, the other side pooches out just a bit next to the steering servo. I really don't mind it, but some sticklers may. :P

I got the materials from McMaster-Carr, possibly the coolest website I've ever played with.:) They seem to have everything, including all sorts of very nifty stuff and easy to find. Metals, plastics, screws, etc etc. Cheap fast shipping too. Overnight was $4. The 2ft angle was only $5.

It may be the stuff they make cutting boards of as well. Its stiff and strong and insulating. As mentioned, I got velcro straps from them as well to wrap around the batts for overkill. You may be able to see there is some room to wrap a strap between the chassis and the trays. I like the width tho. Low CG w/o losing clearance. Once I get the gears, I'll be able to take it out for a spin.

What gearing did you use? 14/51? How did you like that, or do yuou think it could go up a bit? Sounds like yours ran really cool.

BrianG · 08.06.2006, 08:47 PM

I might check that site out. I'm always looking for good places to get raw materials. OnlineMetals.com is good for metals, but I'm always looking for plastics and the like. Local retailers are worthless for this - at least around here.

14/51 worked well for me (you should've mentioned you wanted a 14T pinion). However, since yours may be lighter, you may want to go to 15T, but I'd get it all together and try it out first. Mine wouldn't wheelie because of the weight distribution, but all four tires would spin easily. I don't think you'll be disappointed in the power. What ESC do you plan to use?

Finnster · 08.06.2006, 10:18 PM

Quote:

Originally Posted by BrianG

I might check that site out. I'm always looking for good places to get raw materials. OnlineMetals.com is good for metals, but I'm always looking for plastics and the like. Local retailers are worthless for this - at least around here.

14/51 worked well for me (you should've mentioned you wanted a 14T pinion). However, since yours may be lighter, you may want to go to 15T, but I'd get it all together and try it out first. Mine wouldn't wheelie because of the weight distribution, but all four tires would spin easily. I don't think you'll be disappointed in the power. What ESC do you plan to use?

I've checked out OM.com, they seem pretty good too, just a narrow selection of raw materials (metals only.) I'm leaning towards a 15t, but it always takes a bit of experimenting for me to get it where I want. Just a bit pricey at $12 ea. I'm looking to get a good balance of speed, TQ and runtime (aren't we all?) If it doesn't wheelie its ok, I have the Rusty for that :) Gets to be a bit of a trouble at times.

At your suggestion, I went to Ratshack and got a cheap cap for the 9920. Put it in the Rusty, worked great, but just not as smooth as the Mtroniks I have. Allelectronics.com has better caps which I may pick up when I order some fans. I can't find any "fast-switching" caps in that spec tho, so I don't know what diff this will make long term. I'd like something like the Q125, just don't want to spend another $280 when that's about what I've spend on the whole truck so far. :( We'll see.

BrianG · 12:33 AM

Yeah, radioshack isn't known for their quality parts. You could also try smaller value caps, just more of them. For example; if you need 100uF @ 25v, try two 50uF@25v caps instead. Using more caps helps transient response.

About the ESC; I know, that's usually the hard part to get (as long as you don't get those LMT motors).

JThiessen · 08.07.2006, 11:14 AM

That plastic is basically nylon, I'm not certain if you will be able to dye it. That type may be the oil impregnated version (usually referred to as UHMW), but I'd have to double check. It does have a decent strength to weight ratio, but like all plastics, its succeptible to threads pulling out. If anyone else tries to use some, just watch your cutting speeds (it gets to the melt temp fairl quick), and if your drilling keep the speed down, or have it clamped up good as it will tend pull your bit through too fast.