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[JThiessen]

Q- Do your flat head screws sit flush? In some of the pics it looks as though they may not be. It could be an optical illusion - or, I thought maybe those screws have a small radius on the inside corner that may be riding on your holes and slots (as in the motor mount).

[ANGRY-ALIEN]

Originally Posted by pinkpanda3310

That's very impressive to look at

I am a little curious though, why have you chosen to run 5s? With all the weight saving you've done it would still be a rippin' truck and you could use the internal bec on the quark.

Thanks man... I often just sit and stare at it too in amazement .... hmm... I choose 5s because I knew that's what the quark could really handle realistically...
Also, I saw a vid on youtube of a 10xl running 5s (can't find it again though) and it was moving quite nicely around the track... I have seen other 5s setups with similar KVs
getting really good results. I'm not sure what kind of performance I would get from 4s.... Maybe I'll try a 12 cell pack to see how it rolls and give you some feedback.

From the speed calculator:

5s with 14 pinion

Differential Ratio: 4.3
Transmission Ratio: 1
Other Ratio: 1
Spur Tooth Count: 52
Pinion Tooth Count: 14
Total Voltage: 18.5
Motor KV: 1624
Tire Diameter (inches): 5.65
Tire Ballooning (inches): 0
Motor Current Draw: 0
Motor Coil Resistance: 0
Spur/Pinion Ratio: 3.71 : 1
Total Ratio: 15.97143 : 1
Tire Circumference (inches): 17.75 inches (450.85 mm)
Rollout: 1.11:1
Total Motor Speed: 30044 RPM
Vehicle Speed: 31.62 mph (50.79 km/h)
Effective KV Value: 1624
KT constant: 0.83 oz-in/A

5s with 16 pinion

Differential Ratio: 4.3
Transmission Ratio: 1
Other Ratio: 1
Spur Tooth Count: 52
Pinion Tooth Count: 16
Total Voltage: 18.5
Motor KV: 1624
Tire Diameter (inches): 5.65
Tire Ballooning (inches): 0
Motor Current Draw: 0
Motor Coil Resistance: 0
Spur/Pinion Ratio: 3.25 : 1
Total Ratio: 13.975 : 1
Tire Circumference (inches): 17.75 inches (450.85 mm)
Rollout: 1.27:1
Total Motor Speed: 30044 RPM
Vehicle Speed: 36.14 mph (58.05 km/h)
Effective KV Value: 1624
KT constant: 0.83 oz-in/A

4s with 14 pinion

Differential Ratio: 4.3
Transmission Ratio: 1
Other Ratio: 1
Spur Tooth Count: 52
Pinion Tooth Count: 16
Total Voltage: 14.8
Motor KV: 1624
Tire Diameter (inches): 5.65
Tire Ballooning (inches): 0
Motor Current Draw: 0
Motor Coil Resistance: 0
Spur/Pinion Ratio: 3.25 : 1
Total Ratio: 13.975 : 1
Tire Circumference (inches): 17.75 inches (450.85 mm)
Rollout: 1.27:1
Total Motor Speed: 24035.2 RPM
Vehicle Speed: 28.91 mph (46.44 km/h) (not very impressive)
Effective KV Value: 1624
KT constant: 0.83 oz-in/A

Originally Posted by JThiessen

Q- Do your flat head screws sit flush? In some of the pics it looks as though they may not be. It could be an optical illusion - or, I thought maybe those screws have a small
radius on the inside corner that may be riding on your holes and slots (as in the motor mount).

Yes they do... the little corner are sitting in the holes and the heads are flush with the surface of the carbon (the holes are just over 3mm).