illmatic94

iTrader: (12)

Raced for the first time today on asphalt and this 21.5t motor has no punch, watts or tq.
i am geared around 3.1, revtech killshot 21.5t motor, mamba max X esc 40r slicks and an smc 5800 2s battery. My issue is I was getting completely passed on the straights and coming out of the turns on power alone. My timing is around 65 on the end bell.
Is this motor just weak? Are there different rotors? I doubt it’s my battery

herrokero

Is it an old/used motor? And do you think it might have been overheated?

Marcos.J

iTrader: (235)

your gearing and timing Are way off

Billy Kelly

iTrader: (9)

That gearing will give higher end speed. But no punch. I made that mistake when I did my first racing. Made the car easy to drive. But got killed in and out of corners. And would get caught or just runaway from on straight.

STLNLST

iTrader: (32)

Large track you should be at 3.7. Smaller track high 3.8-3.9. At your current gearing youll bever get out of the corners and doubt you’d even get up to speed.

illmatic94

iTrader: (12)

doubt it. I’ve overheated a motor and I know what that smells like

illmatic94

iTrader: (12)

hmmm I’ll try a larger spur . I swore the car was maxing out almost instantly but I suppose it just wasn’t even getting to top speed.

Billy Kelly

iTrader: (9)

That sound familiar. 3 summer of out outdoor in the last 4 years. I’m still finding gearing to be a bit of a mystery.

illmatic94

iTrader: (12)

What size rotor do you guys run?

riceball777

iTrader: (32)

Most people is know that run usgt/21.5 run a final drive in the upper 3’s. But generally 21.5t motors are pretty gutless.

rko

iTrader: (3)

i'm running at about 40degree timing and 3FDR on a decent sized asphalt track that takes about 3-4secs to finish the straights.

Jamison R

iTrader: (65)

65 on the end bell seams really high

Billy Kelly

iTrader: (9)

3-4 seconds for straight, must be huge track

old_dude

iTrader: (1)

Get the motor down to a true 40 to 42 on a Motolyser. End bell marks can be off a lot. You get above those numbers and bottom end torque quickly disappears and when you couple that with excessive gear you get a car that won't get out of its own way.

illmatic94

iTrader: (12)

Thanks for the reply’s , i went out this morning on my street to test speed. I lowered the timing to around 40 and added a high torque rotor . That helped but after sleeping on it I’m convinced this motor is just slow. Or everyone was running boost. No other explanation to get walked on in the straight