SC10 gearing

[RCcool101]

Hi guys,
I got a castle sidewinder sct and 3800kv motor for my SC10 and am having trouble with the gearing. The gear chart calls for a 14-18t pinion on an 87t spur, so I naturaly went for a 16t, all the guys at the club reckon this was way to small and I was lacking top speed massively, temps are about 74-76 Fahrenheit with this set up, What gearing do you recommend?

Any help is appreciated.

[BeachBuggyPhil]

I've been struggling to get the temperatures down on my 4000kv motor but I'm using 32dp gears. I started on 15t but i've used a 14t and a 17t as well. It was really hot on the 17t.
If you are using 48dp then I'd guess a 14t is to small.
I am going to test the 14t again after experimenting with the 17t this evening and nearly burning my fingers!
Unfortunately I stuck the whole car in a puddle and it's been running slow since then.
I'm hoping I haven't fried it.
The ESC and motor are in a Tupperware box with a silica pack the size of a crisp packet.
Fingers crossed.

[Hpi_guy]

easiest way is to find out is to start at the highest of the chart and run for 5 mins then check temps and go from there, in my blitz i run 83/24

[BeachBuggyPhil]

I, unfortunately, only have 3 pinions. They are 32dp with a 5mm bore and about 6 pounds each so I want to get it right with out wasting money on expensive pinions.
I don't think 48dp spurs would like the power of a 4 pole motor.

What turn/kv motor do you have in your Blitz?

[Hpi_guy]

gm 10.5 and with your bigger 550 motor you always run smaller pinions, a 24 would melt your chassis

[Frecklychimp]

I've been struggling to get the temperatures down on my 4000kv motor but I'm using 32dp gears. I started on 15t but i've used a 14t and a 17t as well. It was really hot on the 17t.
If you are using 48dp then I'd guess a 14t is to small.
I am going to test the 14t again after experimenting with the 17t this evening and nearly burning my fingers!
Unfortunately I stuck the whole car in a puddle and it's been running slow since then.
I'm hoping I haven't fried it.
The ESC and motor are in a Tupperware box with a silica pack the size of a crisp packet.
Fingers crossed.

What truck are you running?

are you running timing advance/boost?

what size is the spur?

[BeachBuggyPhil]

It's an SC10 4x4. I have no timing or boost on the ESC and it's the 60t 32dp spur that comes with the truck.
Using a Tenshock SC411 motor and 120a hobbywing speedo which doesn't seem to struggle in the slightest.

[CrashBangWallop]

Best thing to do would be to borrow pinions where possible to get your gearing right 1st then buy. But different circuits require different gearing so you will need a few pinions minimum. I would recommend investing in a device to read your motor temperature. Gear for around 130 deg F MAX after 5 minutes running.

[BeachBuggyPhil]

I don't race it unfortunately, I'm a LONG way from a track that races 4x4 SC10's. I put it round our buggy track for fun against my 2wd truck with friends.
I've put the 14t on with a heat sink and fan, I'll keep an eye on temperatures, someone in the club has a gauge so I'll see if he can test it.
Cheers