etard wrote:Devries are you planning on buying one of these?
But, I am determined to release a problem free system
If these are ready maybe you could start selling them now as a stand-alone item? I'm sure this could be a big help with some builds and generate some cash flow.recumpence wrote:#4 The freewheeling crank. This is one thing I am really excited about! It will use a second support bearing to eliminate the overloaded freewheel bearing issue that is so common with freewheeling cranks. It will also use standard 130mm BCD chainrings for multiple ratio options. I am very excited to have come up with a solution to the FW crank bearing issue.
I think you should make this so it accommodates your current drives. It would be very useful for quite a few builds (decanio and mwkeefer for example). I'd also make it so that it could be easily used for mid-hub builds.recumpence wrote:#3 The drive unit will mount firmly to the bottom bracket bearing cups on each side with a simple strap holding it up to the bottom of the downtube. This system should fit 90%+ of the frames out there including some very odd styles. It will easily adapt to either 68mm or 73mm bottom brackets.
For a low power system (up to about 2kw) I think you should consider using a modified geared hub. A little heavier than an RC Motor but built in 5:1 or 6:1 reduction and sensors. No additional reduction required would mean a much simpler and less expensive system.recumpence wrote:I am contracting my own motor for this drive.
recumpence wrote:The one major benefit of running through the bike's drivetrain is the ability to change ratios. To a degree, that eliminates the partial throttle sensitivity of sensorless systems, because you can merely run a lower ratio for climbing.
I am moving forward on this system. It is slow going. But, it is moving forward.