out of these, what would be the best direct drive revo setup motor?
 

http://www.hobbycity.com/hobbycity/s...idProduct=4913
http://www.hobbycity.com/hobbycity/s...idProduct=2101
http://www.hobbycity.com/hobbycity/s...idProduct=4572

None of the above, unless you want to design your own custom motor shaft that will accept cvd cups. This is do-able if you match all the parts up right, but is extra hassle. All of those use a 8mm shaft.

Take another look, but keep in mind that the Revo Output shaft is 6mm.:yes:

damn those things are shiny

sike, where do i get ond that is 6mm?

what about this one
http://www.hobby-lobby.com/atlas2927.htm

or this one
http://www.hobby-lobby.com/atlas4020.htm

oops sorry i saw the KV on those
how about this one
http://www.hobby-lobby.com/atlas4030.htm

The 4020/12 looks pretty good. It has a 6mm motor shaft and is in the right kv range

The other link is a motor with a 5mm motor shaft.

what speed would that get me with stocker diffs

Stock diffs won't work. I had to go with the 4.3:1 ratio truggy gears in the RCM Revo V2 diff cases.

why wont they work?

They will blow up:lol:

gay.

Those out runners are torquey lol

ok....

Sike means that the stock diffs are too high ratio. He is using truggy diffs in the rcm cases. He has 4.3:1 gearing as opposed to the stock 2.8:1 ratio. THe high stock gearing causes startup issues due to the high load.

o i c. well how much would a set of those set me back?

Cough!

125 for each diff and case complete from mike at RCM. Expensive but worth it. I am waiting for sike to work out all the details with his setup and then take his lead! That guy loves to test stuff and has some great ideas too. I need to rearrange my direct to diff outrunner redcat and test it some more too.

That too:na:

Lots of new stuff going on here.. Direct drive, clutch set ups ETC:party:

Yeah good times, I love to see the forum all lit up with inovation! Pity that I can't do all of the conversions that i have lined up, money is not the issue, just time. Hopefully it will slow down slightly after the holidays. My wife gave me two months off from working on the house.:yipi: Time to live in the rc workshop!

yno, what if i hah about 5 vehicles all brushless with mamba and feigao and some "inexpensive" lipos?

Linc is correct.

Thanks for your kind words Linc. I'm working on a custom Wye wound 4130 right now. Still need to nail down something ideal in using on the termination point.

I'm also waiting for my Ceramic Nitride Bearings to come in.

Mugen has a Truggy Ratio for 1/8th diffs that I want. 4.6:1 ratio! I think it would be even better. I need to catch up financially before I can throw much more at the Revo though.

In a few weeks, my next Lipo order will be here. I will be selling some good 5000mah 20C packs fresh from the manufacturer. Included are some 20C 5000mah 3S packs. I'm gonna put the Revo on 6S for good if the bearings will bullet proof the diffs.

So I'm pretty drained right now. A Quantity Lipo Order will do that to ya. LOL

That's for sure..:lol: How many Lipos are you ordering?...

14 - 2S 7.4v 5000mah 20C packs
6 - 3S 11.1v 5000mah 20C packs

You're about the only other guy I know that's hooked on batteries as much as me. LOL

:surprised::surprised:anyone kno where to get 2s polyquest 30c-50c lipos at a good price?:surprised::surprised:

I really like you, I think we'd get along very well.. hahaaahaha :lol::mdr:


BL_Revo... do you really need 30C ?.. I'm sure 20C or 25C would be enough punch.... what are you powering with 2S?..
I can get some 3S 30C.. but not 2S..

I've never ran 20C Continous packs actually. There's alot about a High C Rating that is over kill IMO. I've always ran 10C Cont. 15C Burst cells.

When the Direct Drive E Revo was being tested. It was put on 6S 4000mah 10C Continous 15C Burst 4000mah packs. This was the first time I could really tell that I was pushing these packs too hard. They didn't puff, but they did get really warm (115 degrees or so).

I ran some 15C Continous 20C Burst 4000mah packs in my E maxx with the Custom Wound Motor. At 4S, I could tell they were more than up to the Amps I was pulling. They seemed to hold the voltage higher, run cooler, and also when they were done, they dumped pretty quickly.

This next round of Lipo's are 20C Continous 25C Burst. The 5000mah packs will go 100amps Continous, 125amp Burst. But they are more expensive. They all have the 45mm x 140mm foot print. This seems to fit the majority of compartments that were designed for 6 cell Nimh/Nicad packs.

The 10,000mah packs I have, also have this 45mm x 140mm footprint, they are just thicker. Also being made from 10C Cont. (15C Burst) cells, they have huge amp delivery. At 100 amps Continous with 150 amp Bursts, they can power just about anything. All done with a 10C cell. They are bulky and have more weight, but that's the price for the added Capacity.

I can now design just about ANY Lipo Pack. I wonder what the most popular design is for us MT guys?

Alot of Trucks only have room for one pack. This is where Lipo's such as 5000mah 20C 5S packs would be favored. Still doing my research on this.:yes:

I wonder what the current limit is on the new Traxxas Connector?

well by revo i mean use the revo axles and make a 100% custom chassis and center. my dad will soon be getting a mill so i will be able to build it. the design will be similar to cabbie's ruggy on truggyracers.com. (except direct drive outrunner brushless powered, no center diff, and use 2 2s batt packs in series, instead of a fuel tank. :lol:)

Just wondering here

http://www.rc-monster.com/proddetail...mrevov2coupler

No one has talked about them, but with those you could use the 8mm shaft, and the stock shafts correct?

Yeah I guess you could. These couplers were really designed to hook the stock shafts up to the 8mm pinion shafts on the RCM Diffs.

But they could be used that way too, as long as you don't over power the stock shafts. Which is a pretty easy thing to do with an outrunner.:yes:

Psssshhh! Nonsense Sike! :wink:

What centers are you using?

OK OK, Not counting the A123's

LOL

High voltage outrunners would be awesome... but what about all the dirt and debris from the summer bashings?...
Big difference from when you're running 10, 15, 20, 25, 30C lipos.... but for higher voltage applications it's not as important I think.... but the guys with the air planes needs high weight:power ratio.... Just a thought...

Actually from what I gather, the fly boys pretty much know how many amps they're gonna be pulling. They don't pull the start up amperage that we do either. Their discharge rate tends to be pretty flat.

They size the motor for the RTR weight and then prop according to the amps the motor can do continously without over heating. From what I understand alot of the fly boys are running 10C and 15C cells.

The higher the "C" rating, the more the pack weighs for a given capacity. Of course us Monster Truck guys are going with the packs that will deliver the amps we need.

For example, a 10C 8000mah 7.4v pack weighs 12 ounces
a 15C 8000mah 7.4v pack weighs 14.5 ounces

I know it's not much, but I believe it's because there is more anode and cathode material to yield the higher discharge rate.

2.5oz heavier.. but 50% more power... :) .. that's a lot of juice... anyways.. it's nice to have the higher C batteries, just because it will put less stress on the batteries when we're drawing those crazy amps...