Info about SP motors
- Thread starter Marco78
- Start date
J.R.
Well-Known Member
- Region
- USA
- City
- Piedmont Highlands
What is a 'SP' motor? I've seen DD (direct drive), GD (geared drive) and MD (mid drive) discussed, but I've never heard of SP.
Sorry i ment a speed pedelec motor.
harryS
Well-Known Member
In the automotive world, enthusiasts will say silly things like "the engine loves to rev", "it was made for speed", but you know that it just means it wears out faster. Same for your ebike. It will last longer going slower.
So what. As long as you have fun and can afford to replace things. At least with a speed pedelec, if you're going fast, you're doing half the work,
So what. As long as you have fun and can afford to replace things. At least with a speed pedelec, if you're going fast, you're doing half the work,
J.R.
Well-Known Member
- Region
- USA
- City
- Piedmont Highlands
Whether 15.5, 20 or 28 mph, most of the hardware is the same. Cases and windings might be different. I think the major difference is software. With the motor spinning faster and working harder there will be more wear to things like bearings, belts, internal gears and lubrication breakdown. A direct drive is a great option for speed pedelec. It won't have as much torque as a geared drive or mid drive, but the only internal parts that touch each other are the bearings and races.
Stefan Mikes
Gravel e-biker
- Region
- Europe
- City
- Mazovia, PL
@Marco78: Don't worry.
Speed pedelec motors:
On a normal day (not excessively warm), the motor temperature reached some +50 C, indicated in yellow (not red). So it is OK to ride S-Pedelec with high assistance fast. Now, if the motor temperature exceeded some dangerous level, S-Pedelec controller would either reduce assistance or cut the motor off. The point is, nobody in this Forum has ever reported an S-Pedelec or Class 3 e-bike mid-drive motor overheating yet. I mean motors from Specialized/Brose, Giant/Yamaha, Bosch. (Shimano doesn't make S-Pedelec motors).
I had a similar ride under -1 C conditions, too. The motor went up to +25 C.
Note: 520 Wh was used from the battery on that 100 minute ride.
Speed pedelec motors:
- Are designed for speed
- Have good ventilation
- Have thermal protection
On a normal day (not excessively warm), the motor temperature reached some +50 C, indicated in yellow (not red). So it is OK to ride S-Pedelec with high assistance fast. Now, if the motor temperature exceeded some dangerous level, S-Pedelec controller would either reduce assistance or cut the motor off. The point is, nobody in this Forum has ever reported an S-Pedelec or Class 3 e-bike mid-drive motor overheating yet. I mean motors from Specialized/Brose, Giant/Yamaha, Bosch. (Shimano doesn't make S-Pedelec motors).
I had a similar ride under -1 C conditions, too. The motor went up to +25 C.
Note: 520 Wh was used from the battery on that 100 minute ride.
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