Who sells the 6 wind wanderer XL motors or the 8 wind L? Not available here. Are they available with a 5 mm shaft? Can they take 20 cells?

i wouldnt use either wit h20 cells and mike can get them if you really want them

The minimum XL motor that should be used with 20 cells would be a 8XL, but that would definitely be pushing the 8XL. For practical use, the 9XL would be a much better choice as the minimum, with the 10XL being possibly an even better choice.

extrememods; aim to keep the motor spinning at no more than 50,000rpm, ideally 35,000 - 40,000rpm is best though. For 20cells, the BASIC 1600XL would be perfect, or wanderer 13L / 10XL. For dual setup I would say the 10XL is absolute overkill. Personally I would not spend $300 on 2 motors, but spend the same on a single lehner 1940/1950. Dual brushless is pointless, and will be very hard on batteries.

If, for whatever reason, you do decide you want dual BL, I would say go for dual warrior 7020/BASIC 1600XL. I disagree with squee; my experience with the BASIC XL motors has been nothing but good.

What is your plans for this motors? Are you going for a speed record?

Yes, I want to beat promod. Can I do this with a Feigao, Wanderer, or Nemesis?

Oh! Well you can go with a bigger motor and more cells and you will be faster. The smaller motors are not as good to do it with.

extrememods, you'll need in the region of 3000Watts to reach 70mph. A single big motor would do the job (2250 minimum, ideally 2280 or 3060)

wow i didnt think anybody would really challenge promod but this is going to be interesting.

Well promod got 72 mph with a 2240. I think the 2250 on more cells would go faster. I couldn't get my setup to do right. I was going to shoot for about 80. Oh well. Back in the slow lane.

For a single run, I reckon a 2250 could push 75mph if geared high and with loads of cells. If promod made his record with a 2240, then the logical way to beat it is with a 2250 and even more cells. :D

Can I run a lehner 1950 4 winding (not the high amp version) on a BK Electronics 12020 Warrior Controller with 17 cells. If the motor puts out 1800 watts, the batteries supply 20.4 volts, that means the motor would only pull 88.235 amps, right? What pinion size should I use on a 66 tooth spur gear? Would this be a better setup than 20 cells on a dual wanderer or fegaio/nemesis L or XL setup, with the BK Electronics 12020 Warrior Controller?

Those power ratings are fairly meaningless,a 1950 is capable of kicking out alot more than that.The low winds only come in hi-amp,meaning you can solder direct to the windings for lower resistance,since the low wind motor will pull so many amps.A motor can only kick out as much power as the batts provide minus ineffciency.That's why you need to run the motor in it's efficiency range and gear for the speed,typically 35000-40000 max rpm,simply more power out for power in.The only way to an efficient high power set up is to go high voltage.
You need to decide how fast you want to go and how much battery power is needed to get there and then let us advise you on a suitable set up and theoretical gearing.It will require center diff or ginormous pinions with a maxx tranny to hit high speeds with 40000 rpm(You'll need a lathe to machine the pinions from gear stock).
Just let us know what vehicle and how fast you want it to go.

Vehicle is an e maxx, could the controller handle the 4 wind motor on 17 cells (3135 rpm/volt *20.4 volts) What other high amp, high voltage controllers are their, and how much do they cost? I want to gear low with high rpm

I don't know if you have read this thread or not. http://www.rc-monster.com/forum/show...=david+goliath

I think it has some interesting points and views in it.