being too fast is okay as castle has motors ranging from 8k kV to 4.6k kV. I'm sure you will find one that works well (and if all else fails dynamite has a 9.2k kV motor).

As a fellow "what would happen?" brainstormer, I am actually worried there won't be enough torque in the little motors, so you will loose all your speed trying to get the cars to start.

I remember reading a while back about a guy in the UK running a 1/18th scale tekin brushless system in a CRC car with a 2 cell lipo. If memory serves he said with the 8.0KV motor is was comparable speed wise to the 19T cars at his local track.

A LiPo option for 12th scale would defiantly get me back into one. 12th is my favorite carpet class but with no local tracks to run on I just can't justify the battery cost for only a couple regional events a year.

Mark

slapmaster6000
Your 12th scale mamba lipo idea sounds very interesting.
Keep us updated. We look forward to some pics too.

It's true, and it was a 7.2v NiMh pack from a 1/18th car. The Mamba worked brilliantly on this voltage, and the car was, as you say, about equivalent to a 19T.

The car now has a LiPo 7.4v pack fitted, weighs about 500g, but I've not seen it run yet. Brian has the same idea as me using a DB12R, I think!!

Imagine a 12th car where you never take the cells out, do limited maintenance on the motor, and get the sort of speed that takes ages to get from a 19T/NiMh combo - and we haven't started to tune it yet!! Add in limited wear on everything from the 40% lower weight, and less breakage (and longer lasting bodies!) from the lower inertia in a crash...

05 motors aren't essential for 12th, and 3.7v simply makes more work from having to fit receiver packs, regulators, etc. 7.4v LiPo with Mamba makes it all much simpler and more fun - what's not to like??!!

I've run 12th with LiPo and single cell voltage. It's really not a big deal to set up. You do need a receiver pack but that's the only thing that you really need to add.

With 12 450mAh cells you can run a 3.5BL hard and make time. Stock and 13.5 are slower than 4 cell but not that bad. Switched off between the LiPo and NiMh at the track.

I picked up two maxamps receiver packs and wired them in parallel. Best part was that they can be built as a saddle pack to fit in my CEFX car.

Anybody know where to get adapter motor plates and pinion gears to mount a mamba 1/18 motor into a 12th scale car?
Thank you in advance.

don't know of anyone making 64P pinions for the shafts of 380 motors

plate is made by BK Electronics in Germany
http://www.finedesignrc.com/ is the U.S. distributor.

It would probably be easier to buy a bigger motor

So I want to buy a new rear axle for one of my 1/12's but I'm wondering which brand is better; or are thay really all the same. Both use the large d-ring and use clamping style hubs. Has anyone tried both and have an info on the pros and cons of each? Thanks for any help.

Chris

I believe (and I'm sure someone will correct me if I'm wrong) that IRS makes CRC's axles for them.

yes they do.i think crc does there own hub if im not mistaken because the IRS hubs look to be a much nicer finish.they are mirror polished.they both work real good though

oh yeah bro,i have never seen those outdrives before.very nice though

I've used them both and they work about the same. The new light weight IRS rings don't fit that well on the CRC axle flange, though, so you have to use the full size D rings.

My personal favorite for a diff is the Niftech hollow axle with Niftech rocket rings and right hub. The assembly is very light and really true

I got ahold of the guy from SoCal I bought the car from almost 3 years ago--he'd forgotten it was in there (wasn't listed as a "feature" on the car) and was pretty excited when I brought it to his attention. He's pretty sure it was an IRS unit and "held it's adjustment forever". That was certainly my experience.

I'll have to contact Dave and see if he has another one laying around...

Oh, and re: the better finish on the IRS hubs, I'd bet that's as much a matter of the level of finish Frank's willing to pay for/mark up. The retail price is (iir) pretty similar, but IRS is selling them to Frank who has to mark 'em up where IRS maybe does a bit more polish/finishing before marking 'em up to retail. The Carpet Knife 3.2R and earlier had that big round left side hub too while the IRS (and L4 and...) had the nice machined down hub.

And OD is right...REALLY hard to beat the Niftech setup. But cha gotta pay to play...

Looking for any good parts or mods to add to the 12L4.