build a gmaxx and i need help

[ANGRY-ALIEN]

Originally Posted by G-revoRickard

is it any difference between 1:8 center diffs?can i use whichever?
i have HB diffs and i think i will go for a Hot Bodies Center Diff Hardened 50T Lightning:http://www3.towerhobbies.com/cgi-bin...&I=LXLGX1&P=SM

how about the gearing?any suggestions? 2200kv motor and 5s.

it looks that mike will make a batch of these, but if he dont i will build one by my self with a plastic center mount and CF...

I think some Brands/models may differ with the bearing sizes and overall length... for example: the OFNA LX ONE I'm currently using has larger bearings than the OFNA SPIDER
I want to switch over to... So I am now in the process of redesigning the CD/motor mount to Facilitate it.

I hope the below helps... did some guessing with tire size and diff ratio.

Option 1

Differential Ratio: 4.3
Transmission Ratio: 1
Other Ratio: 1
Spur Tooth Count: 50
Pinion Tooth Count: 12
Total Voltage: 18.5
Motor KV: 2200
Tire Diameter (inches): 5.65 - (Not sure if this is the size tire you are using)
Tire Ballooning (inches): 0
Motor Current Draw: 0
Motor Coil Resistance: 0
Spur/Pinion Ratio: 4.17 : 1
Total Ratio: 17.91667 : 1
Tire Circumference (inches): 17.75 inches (450.85 mm)
Rollout: 0.99:1
Total Motor Speed: 40700 RPM
Vehicle Speed: 38.18 mph (61.34 km/h)
Effective KV Value: 2200
KT constant: 0.61 oz-in/A


Option 2

Differential Ratio: 4.3 (I am assuming the this ratio is correct)
Transmission Ratio: 1
Other Ratio: 1
Spur Tooth Count: 50
Pinion Tooth Count: 11
Total Voltage: 18.5
Motor KV: 2200
Tire Diameter (inches): 5.65
Tire Ballooning (inches): 0
Motor Current Draw: 0
Motor Coil Resistance: 0
Spur/Pinion Ratio: 4.55 : 1
Total Ratio: 19.54545 : 1
Tire Circumference (inches): 17.75 inches (450.85 mm)
Rollout: 0.91:1
Total Motor Speed: 40700 RPM
Vehicle Speed: 35 mph (56.22 km/h)
Effective KV Value: 2200
KT constant: 0.61 oz-in/A