I'm from Australia where there is no spec motor class for 1/12. I want to try and get one going, because not having a feeder class is hurting numbers.

I know Stock 12th used to be popular in the brushed motor days, even with 4 cell, but what's the story now with 1S?

Which spec motor do the sanctioning bodies use for 1S 12th? Is it 17.5 or something a little quicker?

Yes , It is 17.5

To incorporate the largest possible community for the 1/12 class, we race the following 4 motor / battery combinations together. We have found, like others, that these 4 combinations are competitive with each other. Of course, each has their own advantages and disadvantages, but we see these combinations all making the A-mains regularly. Motor Type / Size Battery Type
27T Brushed 4-cell NiMH / NiCD
19T Brushed 1S (3.7v) Li-Poly
17.5T Brushless 4-cell NiMH / NiCD
13.5T Brushless 1S (3.7v) Li-Poly

There is no limit on the size of the packs used. Li-Poly packs must be hardcase per ROAR rules.
Copied from Mushroom Bowl Rules

A lot of (but not all) Australian tracks where 12th is raced are outdoor pavement tracks that are designed for 10th scale. As an entry level class, is 1S 17.5 still going to be enjoyable on these size tracks? Or would 1S 13.5 be closer to the mark? Remember, most racers trying this are going to be new to pan car racing.

The UK, and also most of Europe use 10.5 1S for stock class.

I will have to admit though that there is little difference in speed between this and modified.

Trev

Thanks, that's the type of information I need. If this is going to be a feeder class, then 10.5 is too quick. So, either 13.5 or 17.5.

For people trying out 1/12 for the first time, I would say 17.5 on a smaller track , and 13.5 on a bigger track

Wuts some of the best 13.5 motors for 1/12? Is it the Lrp ?

Personal preference,tekin,duo,sp,lrp,murfdogg take tor pick

Hi mate. Troy decided to run a 17.5 one night at Windsor against everyone else with their 10.5's. It was surprising just how competitive he was with it. We both agreed afterwards, that in our opinion, 17.5 open esc is a good entry level class for 1/12th.

I like the duo3s , Murfdoggs are good .

r12 for sale
 

Rev 5L For Sale
 

Good deal on a 5L

http://www.rctech.net/forum/r-c-item...3-itf-etc.html

3.7 v booster
 

Where could I find the booster for the 12R5

Try from here

http://www.rcdynamics.co.uk/

Plenty in use in the UK and there may be users Stateside:D

Theirs a new version that has 7.2v output I believe