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 am not the first to do this, but I think it is the first to be readily available. My system will come with this new FW crank system and a new lengthened bottom bracket.recumpence wrote:freewheeling crank is crank arms, bottom bracket, spindle, retainer, spacer, bearing, sprocket adaptor, White Industries freewheel, two chainrings, bolts, etc.
johnrobholmes wrote:What a trick way to incorporate the mounting foot into a tensioning device!
deVries wrote:johnrobholmes wrote:What a trick way to incorporate the mounting foot into a tensioning device!
Even more trick is how to get chain alignment?
Do you see and understand how it can move laterally to get chain-line alignment?
Use spacers or is there a tracking slot to move it?
recumpence wrote:Lateral adjustment for sprocket alignment is accomplished by loostening the mount foot clamping screws and sliding the whole jackshaft bearing tube left or right in the assembly.... the bearing tube will be about an inch longer than (the drive foot and motor plate). For chain alignment, the whole jackshaft is moved side to side to make infinate alignment adjustments.
recumpence wrote:Do not be afraid to make suggestions or ask questions.
mdd0127 wrote:The slipper clutch is set to prevent too much wheelie action and the acceleration is brutal.
The bike must be pedaled up to 4 mph to engage the drive to make life easier on the motor controller.
Mitch wrote:I'd like to know how your drive forces 4 mph pedaling to engage the drive and how that works in conjunction with the slipper clutch.
mdd0127 wrote:The CA-LRC has a minimum speed setting that allows the motor to sync up and avoid the super high amp surges from attempting to start the motor from a dead stop. The slipper clutch is just a mechanical torque spike limiter and I usually set it tight enough that it doesn't slip unless the throttle is totally pegged or I land the bike with the throttle engaged.
It's a pretty cool setting. On this bike, I have to make two pedal cranks to get to 4mph and then the throttle comes in. It lets the motor sync up before there's a load on it.
recumpence wrote:I have more to show, but no time right now. You will just have to wait.
recumpence wrote:The crank will have a standard 130mm BCD bolt patern. So, the smallest chainring would be 39 tooth. I could add holes for 110mm BCD as well if I get requests for that.
recumpence wrote:My system requires a freewheeling crank. Of course, you could choose not to use a freewheeling crank. But, then the cranks will be driven when the motor is running.
j3tch1u wrote:recumpence wrote:The crank will have a standard 130mm BCD bolt patern. So, the smallest chainring would be 39 tooth. I could add holes for 110mm BCD as well if I get requests for that.
yes, 110mm BCD plleeeasse (i need to run a 32T)!
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