sean
100 mW
So I am stockpiling parts to build my first few bikes. I have quite a bit of auto fabrication experience so I am not worried about the mounting, chain tensioning, alignment, etc of the mountings.
However at the moment I am a bit wary of the controls, and I am unknowledgable about the battery types and advantages and disadvantages to each.
The plan at the moment is to use a hardtail 26" 21spd mtn bike and a independant pedalling system stoker crank. (this has it's own freewheel)
Mount the motor either under the crank hub or about where a water bottle goes and use a Kollmorgen motor to the captain gear and power through my standard 21 speed cassettes. Obviously I will have to be careful with shifts...
But I need to know more details about the Kollmorgen motor to decide on my gearing. I am going to be buying a few of those motors hopefully they perform up to par.
What RPM can I expect the peak efficiency to be at and will this change significantly with voltage?
Initially I will probably run them at 24V with the built in Controller and eventually I will be gutting at least one of them to increase to 48V at least for range and power.
What RPMs can I expect for both of those voltages?
How difficult is it to make one of the Kol motors suitable for an external controller? How difficult is it to reverse the direction (although I do intend to use them CCW currently)
Where is the best place to buy The Kol motors?
Also best place to get a gear to mount to the motor with the same chain size as the bicycle (is that 35#? or?)
I am planning on gearing down the motor drive to the hub and then of course I can use any of the 3 front or 7 rear gears to adjust torque delivery.
The beauty of this method in my eyes is that it keeps the pedals, utilizes the gears, allows you to ride under power and not pedal and has little to 0 drag from the motor.
I welcome comments, similar kits out there are the Elation:
Which mounts the gear under the bike, and uses a drive gear on the outside of the largest front gear which to me is less than ideal.
The other kit sold similar to what I plan is the Epacpower
which is very fine in my mind except for the 200 watt motor.
I am getting a sun independant peddling system stoker crank and then going to install a set of smaller front gears like a 20, 26 and 32. But again all of this depends on the Kol motors operating speed.
So please let me know more about the Kol motor and also let me know if you see any problems with my planned route to E-bikedom..
Thanks!!
Sean
However at the moment I am a bit wary of the controls, and I am unknowledgable about the battery types and advantages and disadvantages to each.
The plan at the moment is to use a hardtail 26" 21spd mtn bike and a independant pedalling system stoker crank. (this has it's own freewheel)
Mount the motor either under the crank hub or about where a water bottle goes and use a Kollmorgen motor to the captain gear and power through my standard 21 speed cassettes. Obviously I will have to be careful with shifts...
But I need to know more details about the Kollmorgen motor to decide on my gearing. I am going to be buying a few of those motors hopefully they perform up to par.
What RPM can I expect the peak efficiency to be at and will this change significantly with voltage?
Initially I will probably run them at 24V with the built in Controller and eventually I will be gutting at least one of them to increase to 48V at least for range and power.
What RPMs can I expect for both of those voltages?
How difficult is it to make one of the Kol motors suitable for an external controller? How difficult is it to reverse the direction (although I do intend to use them CCW currently)
Where is the best place to buy The Kol motors?
Also best place to get a gear to mount to the motor with the same chain size as the bicycle (is that 35#? or?)
I am planning on gearing down the motor drive to the hub and then of course I can use any of the 3 front or 7 rear gears to adjust torque delivery.
The beauty of this method in my eyes is that it keeps the pedals, utilizes the gears, allows you to ride under power and not pedal and has little to 0 drag from the motor.
I welcome comments, similar kits out there are the Elation:
Which mounts the gear under the bike, and uses a drive gear on the outside of the largest front gear which to me is less than ideal.
The other kit sold similar to what I plan is the Epacpower
I am getting a sun independant peddling system stoker crank and then going to install a set of smaller front gears like a 20, 26 and 32. But again all of this depends on the Kol motors operating speed.
So please let me know more about the Kol motor and also let me know if you see any problems with my planned route to E-bikedom..
Thanks!!
Sean