Power hungry

[starscream]

I want to upgrade the brushless motor in my MBX-5 buggy from my maxcim N32 2400kv (18-20cells) motor to something with even more power. I was thinking of going ultra high voltage so I would have massive power and long run times. It seems that the Lehner Basic XL 1200 Brushless motor would do the trick with 65,000 RPM running at 40 cells or 1 6s lipo on each side of the buggy (total of 2 6s)

It looks like I could use the Astro Flight 207D or the Hacker Master/Navy 77 but I don't think they can't handle the full potential of the xl1200...

Is the Schulze 40-160 my only option to handle that much voltage or can the BK 30150 handle this?

I want a setup that will blow away the nitro 1/8th buggies.

I'd appreciate any thoughts or help on this.

[Serum]

With that basic XL, you might as well use the BK 30/95 (the higher the voltage, the lower the amps will be to reach the same power) In fact, the BK 30/95 is soon to be renamed/rebatched to 36/95. In fact, you can load the 36/95 (or 36/120) with a big 2240 if you want to. But if you want to keep it superlight, take the XL and use lipoly cells (the Kokam 3200's are the best money can buy at this moment)

Keep this in mind;

I have got bad experiences with Schulze, (and i am not the only one in this world, and bad is the understatement of the century here) and i never ever heard a bad thing about BK!

People run their maxxes with a low kv motor on highvoltage lipoly packs with great succes! It is soooo powerfull.! And you'll get a very efficient setup when you go highvoltage.

[starscream]

Thanks Serum,
I think I'll stay away from the Schulze. The BK sounds good.

I'm waiting for the Kokam 6s lipo packs and the 6s charger from FMA Direct. I emailed them and they told me that the 6s Lipo and charger should be available in May. Thats what they said about the Scorpians too. It looks like you can order the Scorpians for a June delivery date but the Scorpians are only 2s packs. What I like about these new Lipos is the voltage regulation/conditioning via the charger and the low voltage cutoff cercuitry on the batts.

Hey Mike, whats the biggest, badest, high voltage system I could get, or you could sell to me :cool:

[RC-Monster Mike]

The 30+ cell controllers have a 42000 rpm limit under load (at least the current ones do - the new models are said to have removed this limit), so if you were running 12s Lipo, you couldn't do it with these controllers. The rpm limit is 42000 under load, which is actually better in terms of motor efficiency and heat tendencies, as well as longetivity. The 1600xl motor with two 6s packs in parallel would be an absolute beast, with very nice runtimes as well. The rpms would be similar to that of a high end nitro motor as well, so it could be geared similarly for the same speed, but much harder acceleration compared to the nitro version. The warrior 9918 could probably handle this set-up as well, although the micro 18120 could do it easier and provides the ability to tune a few things, so may be the better choice. The xl200 with the same controller could also be a winner of a set-up, but The 1600xl is probably the better choice to maximize the runtime, and would be an excellent performer as well. 18120 with dual 6s lipos and the xl1600 would be my choice.

[starscream]

According to the item descriptions, the 18120 has a max cell capacity of 18 cells. Is this not correct and I could run a total of 12s lipos on the 18120?
What is the max rpm for the 181x0 controllers compared to the 42000 rpm max of the 301x0 controllers? I want to run upwards to 40 volts :cool:

Thanks

[RC-Monster Mike]

To run 40 volts or more, you would need a very slow turning motor(around 800 rpms/volt). The 18 cell controllers (actually, they are approved for 20 cells) are good for 100,000 rpms with 2 pole motors. The 30 cell controllers (approved for 36 cells) are good for up to 42000 rpms, so they require slow turning motors. I don't have any motors in stock that would work with 40 or more volts. I could get something like this, but I don't stock it. I was suggesting wiring the two packs in parallel (so, 22.2 volts and 6400 mah) using the 18120 controller. So two 6s LiPo packs, but acting as one larger pack.