Just today I was riding my Radwagon and pushed it hard. I gave it full throttle (1500 watts with my current settings) up a steep hill (riding up W Dravus on the west side Queen Anne) for about 5 minutes and then cruising at 30mph plus and I only saw 75 degrees centigrade on the temp sensor. Lots...
The GMAC does not inherently have torque sensing. The torque sensing will Come from a seperate torque sensing bottom bracket and your controller setup. Mine works well enough, but I’ve not ridden a bionix so I can’t compare. I suspect mine could be tuned to work even better than it does if I...
Thepronghorn - there you go, proving me right when I said I am not a battery expert! You are correct that I am charging at a 2C rate under maximum regen.
My 20 amps max regen is just under a 4C rate. (CORRECTION- it is actually a 2C rate. See posts further down). My Panasonic Sanyo GA cells have a charge constant of 1.675 amps. Thus a 3p battery configuration gives a 1C rate of just over 5 amps (5.025 to be exact). So 20 amp charge rate is 3.98C...
My understanding is many BMS do not regulate regen current. Thus when “charging” a battery via regen through the primary output wires, it bypasses the BMS charging charging circuit. That is the case on my battery. In researching what was safe amount of regen amperage, I was told because regen...
Ahicks - yes, I am of the opinion that not many people have experience with geared hubs without clutches that are therefore capable of regen braking. Almost all comments regarding regen braking are in regards to direct drive hubs. With the GMAC, I can use regen braking to bring me to a...
Bullfrog - Thanks. Its been a fun project and I'm loving riding the bike and how it performs now. I'm actually showing 16.6 WH/mile in my most recent charge cycle and 16.7 in the previous.
On a separate note, I've been seeing some interesting statistics regarding my regen braking. I've read...
I have had very good service from Rad Power Bikes during my ownership of a Rad Rover and then a Rad Wagon. I am in Seattle so I can go into their shop in person. I can’t comment on their online service.
Today I fit some new cargo bags to my bike. I wanted something with greater capacity then what I had (original versions of the Rad Ballard bags). I looked around the internet and checkout out a lot of options and finally landed on the Cargo Hold bags from Tern cycles...
Amberwolf - My LED strips are visible from a full 90 degrees to the side, if not full brightness off axis like that. I might add some additional side/down lights as well per your suggestion. You cannot be too visible.
I had the chance to ride my bike up Queen Anne hill in Seattle today, which...
Amberwolf - yes, it should be 17.7wh per mile. I corrected my previous post. The lights on the helmet are fully integrated into the structure and everything is smooth inside and out. I don’t think they impact safety in the event of a crash in any way.
In regards to the led strips, great minds...
One other update, I was flipping through the cycle analyst today and checking the stats. I'm averaging 17.7 WH per mile so far. If I maintain that average and I run the battery between 80% and 20% states of charge, I should see just about 25 miles of range. If I run the battery 90% to 10%, I...