Move to Brushless

[butters86]

Hi Guys,
I've just got back into RC Cars, I used to race 1/10 touring about 15 years ago.

I've bought myself a second hand Ansmann Madrat 2WD 1/10 buggy.
I'm using my old electrics at the moment (except for new nimh batteries)

I'm using a 12-4 motor as all the others I have are 27T stock and a bit tired.

I'm looking to get into racing at my local club but I also want to be able to have fun in the back garden with it.

At the moment it doesn't have much guts at all on the grass and on the loose stuff it's not got a whole lot of punch, I'd like some more speed too.

I'm looking at going to a brushless motor/ speedo combo and I've been looking at the 9T SKYRC. Does any body have any advice/ better suggestions for what I'm after?

I guess I need a mix of torque and speed.

[jon kedge]

Iv'e had a similar system(ezrun 6000kv)in my rat,i would upgrade the idler gear to the hpi firestorm truck item(steel)for racing as i destroyed a few.It will be sensorless so gear it lower (19-20),apart from that no probs,jon

[butters86]

Thanks for the advice, I'd of stripped it!
I've only had the car a day and wanted to get it running quickly (like a kid at christmas) not been in the gearbox yet to to inspect, just fitted a motor/ pinion. Is the idler gear inside the gearbox, is there anything else which needs uprating whilst in there?

I'll order the part regardless as it can only be a good thing.

[nivek]

idler first, shocks next if they are the stock ones , a little weight at the front around servo works well..

[butters86]

I've upgraded the shocks to metal ones, just ordered the idler.

After researching some bits the other day, people where saying not to go lower than 9T in a 2WD buggy, are they just weak people ? And higher Turn = more torque/ find a balance?

To me lower turn, more RPM sounds GOOD

Obviously 6000kv is considerably higher RPM than say a 4000kv, what's the torque difference like, e.g. launch? If it's going to get going in grass on it's own will the lower turn motor have as much torque?

You'll have to forgive me, I'm new to this newfangled brushless technology - I need to get pulled out of the 90s.

Also I should add I'm still on 6-cell NIMH, running 5000mah. Not jumping to Lipo for a while, that'll be something for later in the year (baby steps)

[mattr]

You'll have to be very gentle on the throttle with low turn motors in 2wd. I run a 6.5t in a mid/front motored 2wd (so very well balanced) and mashing the throttle will get the front wheels airborne (or the back wheels spinning madly) at almost any speed.

I'm only using it as is the only spare motor I had.
I'd prefer to use an 8.5t. Which is what I run in my 4wd, but I've not got round to buying one yet.

If the esc has features such as boost, turbo, timing and so on. You'll be able to get a significant turn of speed from it, even with the 9t.

Maybe less so with a nimh, I'd go lipo asap.

[alex97]

Originally Posted by jon kedge

Iv'e had a similar system(ezrun 6000kv)in my rat,i would upgrade the idler gear to the hpi firestorm truck item(steel)for racing as i destroyed a few.It will be sensorless so gear it lower (19-20),apart from that no probs,jon

I ran my firestorm on a 4700kv 4 pole motor and I didn't have any problems with my gears.