need some help with making a brushless LST

[suicideneil]

If you know there are lots threads about LST conversions, have you looked through them ( or the gearing calculator ) properly to get ideas for gearing? I'd guess not if you are still guessing..

Differential Ratio: 3.3076923076923075
Transmission Ratio: 2.090909090909091
Other Ratio: 1
Spur Tooth Count: 63
Pinion Tooth Count: 22
Total Voltage: 18.5
Motor KV: 2200
Tire Diameter (inches): 6.75
Tire Ballooning (inches): 0
Motor Current Draw: 0
Motor Coil Resistance: 0.006
Spur/Pinion Ratio: 2.86 : 1
Total Ratio: 19.80515 : 1
Tire Circumference (inches): 21.21 inches (538.63 mm)
Rollout: 1.07:1
Total Motor Speed: 40700 RPM
Vehicle Speed: 41.27 mph (66.29 km/h)
Effective KV Value: 2200
KT constant: 0.61 oz-in/A

I dont know what spurs are available off-hand, so here's a rough guess at the gearing required with the XXL tyres and 2nd gear, looks about right.

http://www.scriptasylum.com/rc_speed/_top_speed.html gearing calculator

Definately take the time to look at all the other LST/ LST2 threads though to get some more ideas- there is no magic 'correct sized pinion', it depends very much on the size of tyres you use, and what spurs you have available, and which spurs and pinions will be able to mesh without the motor hitting the tranny for example- cant know that without learning from other people's experience..

[honda237]

Originally Posted by suicideneil

If you know there are lots threads about LST conversions, have you looked through them ( or the gearing calculator ) properly to get ideas for gearing? I'd guess not if you are still guessing..



I dont know what spurs are available off-hand, so here's a rough guess at the gearing required with the XXL tyres and 2nd gear, looks about right.

http://www.scriptasylum.com/rc_speed/_top_speed.html gearing calculator

Definately take the time to look at all the other LST/ LST2 threads though to get some more ideas- there is no magic 'correct sized pinion', it depends very much on the size of tyres you use, and what spurs you have available, and which spurs and pinions will be able to mesh without the motor hitting the tranny for example- cant know that without learning from other people's experience..

Thanks, I have look at all the other threads, spent about 2 hours. Yes there is a lot of different factors i know, but the only guy that was running close to my setup was running a 25T pinion (thats why i asked). I would be running the stock second gear like everyone else. Trust me, i'm not a noob, just like to be particular.
So for general bashing, Should I go with a 22t or a 23T?
Thanks for any help, just want the truck to be perfect.