flou

iTrader: (18)

So I got bored and strapped my celly to my stampede. Put in a compact 3s zippy and turned on the gps.according to gps my truck hit 40mph.also done it in about a quarter of a block. And everything in it is budget electronics. Hw esc. Tacon 2 pole motor (2200kv) 3660.anyways not bad for a budget build!

mrgrimm

iTrader: (46)

Seems too fast for 2200kv on 3s...must have some serious gearing!?

mudbug85603

38.9 on a E Maxx with a Leopard 4292 1480Kv 25/68 gearing running 4s through a HW 150

flou

iTrader: (18)

I'm geared 15/54.running proline trenchers 2.8s.my son broke his cc powered slash out (3800kv on 2s..)I let him reach top speed before I took off and still walked past him like he was parked.oh and the trenchers stretch out all the way. Look like my trucks rolling on Frisbees.lol.

Justpassedu

iTrader: (118)

I'm geared for about 65-70mph running 4s on a custom slash 4x4 lcg mt conversion I been building. Not that I use all that power but I like to have it on tap for the excitement . Sometimes I'll throw some onroad tires on it and do some street running with friends .

AlaskanDad

Not entirely sure, but math is something I am halfway decent at, and my calculation are saying low to mid 50's before flipping back on my lid at 85% throttle. This is in my P2de with 19/87 gearing on a 5400kv 4-pole motor and SPC 2s 50c 5000mah.

Just doing speed runs on warm days the motor stays around 109-120 degrees. Actually tried cooking the motor last Sunday with back to back speed runs and multiple batteries with tons of full throttle tall grass bashing nonstop. It never went over 149.5.

Overdriven

iTrader: (18)

I'm not the type to go and try and disprove anyone's speed claims and I'm not going to start doing so now. I was surprised by the OP's speed claim though so I ran some calculations out of curiousity to see how possible it actually was.

Differential Ratio: 2.8461538461538463
Transmission Ratio: 1
Other Ratio: 1
Spur Tooth Count: 54
Pinion Tooth Count: 15
Total Voltage: 11.1
Motor KV: 2200
Tire Diameter (inches): 4.89
Tire Ballooning (inches): 2.5 <-Added radius of tire ballooning
Motor Current Draw: 0
Motor Coil Resistance: 0
Spur/Pinion Ratio: 3.6 : 1
Total Ratio: 10.24615 : 1
Tire Circumference (inches): 31.07 inches (789.19 mm)
Rollout: 3.03:1
Total Motor Speed: 24420 RPM
Vehicle Speed: 70.12 mph (112.64 km/h)
Effective KV Value: 2200
KT constant: 0.61 oz-in/A

Note that the vehicle specs are what the OP stated, I adjusted the tire ballooning figure (speed calc uses radius) to determine how much the tires would have to balloon to achieve the 71mph. Mathematically speaking the 4.89" tall tire would have to more than double in size to over 10" tall. It's interesting to note the Stampede 4x4 has a wheelbase of 10.83" so there would be less than an inch between the front and rear tires!

Like I said, not disputing or trying to disprove anything.

flou

iTrader: (18)

Like I said. I used a gps app on my phone. I have no honest clue how accurate. It's as accurate as I can get. And i don't know how big the tires balloon. But I know they can't get any taller.attached a photo. And for the one saying I'm not trying to disprove some one they sure went thru a lot of trouble trying to. I didn't use a calculator.I used gps.

flou

iTrader: (18)

So I downloaded 2 other gps apps and first one was crap. The other 2 used were allot closer on numbers. Got between 38 and 40.probably should have checked against something else. But oh well. Still fast for 3s.and I deleted that hud app used.

AlaskanDad

What are your temps? Also, 70kmh is about 43mph. Were you looking KMH thinking it was MPH. Some apps default to KMH and most do not notice.

flou

iTrader: (18)

I very well could have been reading kph.it was the first time I used the app. As far as temps. The esc is ambient as far as I can tell. My son thought my temp gun was a laser gun.. (its broke).but I can run for 15 minutes or so and touch the motor as long as I want. It's warm. But never gets hot enough to move my finger.

flou

iTrader: (18)

Once my 8th scale is together I'll post speeds on it. It's running the skyrc toro 150a esc with a CC 1515 1y 2200kv.tires are 6.75 inches tall without ballooning. Oh on 4s.

lemonader83

iTrader: (16)

Overdriven, please tell me my speeds as I'm not willing to strap a gps to my muggy and don't have or want a speed gun....well I kinda want it, but I'd rather buy a new lipo...lol.

1717, 1650kv getting 200 amps from an XL2, programmed for maximum power running on a 60c 6s lipo wi 200 amp connectors. I mention the amperage as I know resistance is big when moving that level of current.

Tires are from a CEN Genesis that stand about 7" tall and don't balloon much, maybe 8" max.

Geared 19/42

What's my speed? I've never had the balls to fully squeeze the throttle.......

flou

iTrader: (18)

That's right. It is nice to have more power than neccasary. May not need it today. But tomorrow ya just might. My kids enjoy watching it pull wheelies from half throttle. And the massive crashes.

twissted

I use a Traxxas Transmission in my 17.5'' wheel based LST with A Castle 1515 2200kv motor and 1/8 Castle Sidewinder esc so it goes slow and fast on 6s and 4s. I use a pair of Hitec HS7954SH servo for the steering and a HV micro servo for the transmission so that I can run 8 volts to the system. That gives me over 800 oz steering torque to the wheels.