Just got a brand new HP Velotechnic Scorpion FS 26 with the intent to replace my Catrike Villager. It's only been 2 days so far but I'm frankly shocked at how much more pedalling effort this HP requires than my Villager! I figure there's got to be something wrong, so I hope to get some ideas to check here.
First, the Specs between the two:
Catrike Villager:
3 20" wheels
Bosch "eCat" 250w eAssist Motor
Standard gearing and derailleur on back:
Standard disc brakes
No parking brake on rear tire
HP Velo Scorpion FS 26:
2 20" wheels and 1 26" wheel
Shimano Steps 250W EP8 w/640W battery
Bosch Rohloff Internal Hub on rear wheel
Standard disc brakes
HS Mesh Seat so slightly higher seating position from Catrike
Hydraulic Parking Brake on rear wheel
Significantly heavier than Villager
Now here's my problem - on the same road, on the same day, I can ride my Villager
at the same speed or faster in ECO mode as the Scorpion in BOOST mode -
and with significantly less effort! The Shimano on the Scorpion supposedly has almost twice the torque in neuton-meters as the Bosch on the Villager (90 vs 50
AFAIK). I can only think of 5 possible reasons why the Scorpion takes so much more effort to ride:
1. The extra weight - but shouldn't the extra power (torque) in the Shimano motor negate this?
2. The higher seat on the Scorpion changes the seat to pedal angle a bit. But would it make so much difference?
3. 26" wheel vs 20" wheel in back? Shouldn't it be faster, not slower?
4. Ive read that the Rohloff is slightly less efficient that a derailleur system (ie - more drag). But this big a difference?, and
5, Perhaps the parking brake on the Scorpion needs adjusting (ie - creating drag)?
Is this normal? Any thoughts on what is most likely at fault and what else to check (and how) would be GREATLY appreciated!
Thanks,
Bert