Ebike for trials

Sherco-jack

New Member
What mods are required on an ebike to handle boulders, rocks and cambers to approach the capabilities of a 50cc motorcycle?
 
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Thx for the suggestions. The EM and oset are too "motorcycly". Want an ebike to use on mtb trails in nw arkansas (ebikes are allowed on mtb trails here). Further research indicates the enduro bike by yukon might be a good bet for my under $2000 price range.

This website is awesome. Whoever started it deserves rock star states.
 
A 50cc is about 3 hp (50/15cc) comparably in electric that would be 2200w (750x3). The bicycle being a much lighter chassis and especially wheels however can get by with less hp and maintain the same power/weight ratio.

My recent trials with a 750w (1 hp) mid drive with a low range of gearing, torque assist and a throttle that weighs less than 45 lbs. It has a power to weight ratio of .o222. A 3 hp 50cc bike that weighs 150 lbs has a power to weight ratio of .02.

Because you also are putting your pedal in put in it raises the available torque quotient. The motor I use has 80nm and it really does show when climbing steep terrain, it's like a tractor! I only use the eco setting while plonking around as it is plenty for the terrain and speed I want to travel. On smooth road you just drop some gears and can get up to speed easily even though you are on a bike with 15psi in the tires!

Having a throttle as well as torque sensing PAS is key. Also setting up your front brake lever as a "clutch", basically using the cut out when necessary by a light pull on the lever which is very useful for low speed manueuvers to keep the PAS from kicking in when not wanted. Can also be used while having to shift under load but I find just backing off on my pedal input momentarily and the gears change on the PAS runout without any stress then pedal again.
 
OP: With a handle such as Sherco-jack, you are obviously a M/C trials rider. Decipher my handle...
My guess - An early adopter of any interesting new trend. And you go at it aggressively. Note: i do trials and also ride a gasgas ec250. Both are 2 strokes and sometimes hard to start. Thus, my interest in ebikes. Since i am retired, my wife wants me to ride our backyard - have several natural sections so can ride anytime. The local bike scene n the bentonville ar area is active w lots of nice trails.
 
A 50cc is about 3 hp (50/15cc) comparably in electric that would be 2200w (750x3). The bicycle being a much lighter chassis and especially wheels however can get by with less hp and maintain the same power/weight ratio.

My recent trials with a 750w (1 hp) mid drive with a low range of gearing, torque assist and a throttle that weighs less than 45 lbs. It has a power to weight ratio of .o222. A 3 hp 50cc bike that weighs 150 lbs has a power to weight ratio of .02.

Because you also are putting your pedal in put in it raises the available torque quotient. The motor I use has 80nm and it really does show when climbing steep terrain, it's like a tractor! I only use the eco setting while plonking around as it is plenty for the terrain and speed I want to travel. On smooth road you just drop some gears and can get up to speed easily even though you are on a bike with 15psi in the tires!

Having a throttle as well as torque sensing PAS is key. Also setting up your front brake lever as a "clutch", basically using the cut out when necessary by a light pull on the lever which is very useful for low speed manueuvers to keep the PAS from kicking in when not wanted. Can also be used while having to shift under load but I find just backing off on my pedal input momentarily and the gears change on the PAS runout without any stress then pedal again.
Thx for the concise and thorough info. Getting closer to a decision. Just saw what hpc has.
 
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