Hub Motor Vs Mid-drive comparison

[Cory151]

Great comparison, people tend to under estimate the Stromers climbing ability simply because its a hub motor, other than my Stealth Bomber Ive not been on a better turn key climber, and Ive tried a bunch.

Also here in San Diego we have higher year round temps and I've not been able to get the ST2 to overheat (200lbs), even on soft sand beach riding which is explicitly prohibited by Stealth in their owner manual for fear of overheating.

Again, awesome comparison and production.

 

[bluecat]

Thanks to Ravi and Adam for this impressive comparison.

The result confirms earlier findings in Switzerland: The ST2 beats them all – and the ST2 s will even be better. But why?

· Athletic rider

· reach and maintain a certain speed

· shape of the torque curve (NM / rpm@motor)

· shape of the efficiency curve (NM / rpm@motor)

· capacity of the battery (Wh and V)

All together makes the ST2 a superior bike under road conditions. Both torque and efficiency curve have a shape rather like Ayers Rock than the Matterhorn. The Matterhorn shape – with max. NM @0 rpm – is well known for electric motors. The engineers from myStromer AG have designed a complete new slow turning motor with much better values than those from the competitors. To run this motor uphill under ideal conditions, a capable rider is needed. If the hill is very steep and speed decreases to 5 – 10km/h, mid-drives would win. But above 25km/h the ST2 will remain unbeatable. The huge battery is also important: It delivers longer a peak load, so the bike runs longer above its nominal Watt-value. Then, the overheating risk of the battery is smaller. A system with higher voltage supports this effect.

 

[fxr3]

My pant leg got caught in front sprocket on new Haibike. But worse yet, every time You have to stop suddenly(or anytime), you need to downshift a bunch of gears fast or taking off will require stronger legs than I have. Like a regular bike- I guess. A regular bike is prolly not geared for 25mph cadence either-exaggerating the problem- I think.

 

[fxr3]

A boat out drive vs. a straight shaft comes to mind. Out drive has some performance and maneuverability advantages....... But complexity and reliability issues will forever offset those advantages. Not to mention Bosch is a replacement part company. Which will likely work out well for them in the long run on bicycles. And when designing a frame around the Bosch drive- they forgot to conceal battery in frame. Opps. That's what attracted me to my awesome Stromers in the first place.