I did a little research and found that the OP has an older Crystallyte 5304 motor. He mentioned it in his other thread that he posted about a month prior (and that he should have referenced).
https://endless-sphere.com/forums/viewto ... =1&t=40506
cooljaysquat wrote:Ya, I have the Phoenix Racer 5303 that is the 72v...
I have nice electric bike the ew-400 http://high5scooters.com/productinfo/ew400.htm
which is 36v. I bought 24 FET 4115 MOSFET 84-132V Freeway Speed Controller from Lyen. I bought a 51.8v lithium battery from http://www.batteryspace.com/highpowerpo ... nrate.aspx
My cycle analyst reads it is putting out 100v. I have the 36v in series with that 51.8 lithium battery, and I thought why don't I build a super bike on a 700c rim bike and enter the most powerful bike forum. I seen a posting on the most pwerful e-bike https://endless-sphere.com/forums/vi ... est+e+bike
I thought since I have the the race hub motor I could go crazy and build a sick bike. I am building a 700c bike to be my super bike. Thanks for all the good tips and ideas.
So he's got a motor that's already wound for high RPM but with lower torque off the line. Yet he added another 51.8v in series to his original 36v battery which NEARLY TRIPLES HIS VOLTAGE. Furthermore, he talks about putting that already fast motor onto a taller 700c rim. That motor really belongs in a smaller 20-inch rim, but okay, let's see where he's going with this...
The new 51.8v battery he bought has a BMS capable of only 40A output and I'm pretty sure his older 36v battery is limited to much less current output. So when he puts the 2 battery packs in series he's going to be limited to the output current of the older 36v pack.
So with the high RPM motor and a taller 700c rim and 90+volts there's theoretical possibility he can reach speeds of over 60mph. However, with his battery current severely limited his torque is going to suffer and he'll have sluggish acceleration and poor hill climbing ability. Definitely not the performace of the superbike he said he wanted to make.