How do you think a 4wd 4.4:1 on Trampa hangers running 9” would work @moon @Andy87 130kv being the idea
And any price break on 4wd vs 2wd?
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Yeah probably 
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I‘ll let you know how it works on dual with 170kV and 8“. If that works well 130kV and 9“ should be fine too. But we will see. I think there is a reason why jenso and trampa go with 1:5 or even 1:6
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The last one, because you need to make me an aluminum base plate too 
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True but 4wd would make a large difference looking forward to reading your tests!
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I’m going to check that for you, do you already have a motor mount for it?
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Shipped out 3.5 weeks ago from Poland. 3-5 week delivery time. Any damn day now.
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Maybe less strain on the drive train
I think a lot depends on the terrain you will drive at. Like @taz said in his area a 1:4.4 will probably be not enough. For my area it’s probably more than enough and I like the extra speed I can get with it. For 8“ (180mm) and 170kV that would be geared to 52km/h which seems a pretty sweet spot for me.
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Yeah running the numbers but not sure of the teeth number motor/drive wheels for 4.4 @moon
Roughly this but range takes a whoopin https://calc.3dservisas.eu/?TZDNCsIwEITfJWeRpGmKeF2lJyUg2LvNIYKxhR7Fd3dn2qq3b4bd2Z-XuUk2e_O4D0-zUXFW4beN8iQXZVcRo-KOJCiw1lIcoFyYGTXV7DPTKY7I8IC_vjHCrUlsAjHKByLMhvgN6rMsSX0-YhlLvKK9BhdZMgvX9vTiAKYbf_OLDOtlqZuQwOrUntZrUtthBbwhcVow7w8=
Currently 44:12 44:11 44:10 but it could be changing 
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Mmm not sure if that should be driving 9” wheels any experts on that? real internet only experts, thanks
I run 42/9 with the chains currently on my 9“ and pretty happy.
60:20 is my second option. But I don’t know
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This is 125-150mm wheel or flat land gearing only.
Yeah it’s not 5:1 or 6:1 category
But it’s not like it can’t tackle hills
Cant tackle your mountains
We have a completely different definition of hills.
These are medium hills I have to tackle during my commute. Going off road means hills twice as steep. Simply put a 3:1 gearing ratio with 200mm wheels can’t go up these hills especially in the summer.
4.4 ratio and the only things that will provide any evidence is by getting this drive made and testing it in some big hills
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And maybe I’m completly wrong about min/max teeth number for ATB, subject to correction on this -
Gear Drive/Spurs in use currently by other makers for bigger wheel drives(ie 8” wheel+ ATB)
Moon 10T motor gear 44T Wheel gear
Kaly 10T motor pulley 40T Wheel pulley
Etoxx Mini Helical Gearbox is 10/40 for 8 and 10mm Motorshaft OR 8/40 for 8 mm Motorshaft
Maxi Helical Gearbox is 10/50 for 8 and 10 and 12mm Motorshaft OR 8/50 for 8mm Motorshaft
Trampa 10 Tooth HELICAL Motor Pulley 58 Tooth Helical Slave Pulley
3DServisas 8T motor pulley 40T Wheel pulley
?