Recent content by FZBob

Looking good! I really like having a throttle for technical stuff and a cruise control switch for long steady climbs. I set the cruise control for 100 to 150 watts, (it varies depending on how fast I pedal). The throttle over-rides the cruise control in case I need a bit of extra power. I...

Thanks! Pillow blocks - :lol: :lol: :lol: - Total PITA! I used CAD (Cardboard Aided Design...). Then eyeballing about 50 little cuts on the mill. Cut, fit, re-try. I did put helicopter tape (?) under the mounts, so as to not scar the paint. It's a tight fit, and the top pillow block has...

For years I believed a motor freewheel was necessary. I put a lot of thought into freewheel mechanisms. If you take a look at the very first pic in the first post on this thread, you can see a big ol' FREEWHEEL on the left side of the crank, allowing for pedaling past the motor. It was noisy...

The 6396 140Kv motor might not be too bad for pedal drag. I've been running 6384's (120Kv) on both of my bikes for a while, and pedal drag is not really noticeable. I like the feel of the lower Kv motors (120-125) as they seem to lug down like a diesel - as I get tired and my cadence slows the...

Nice sprocket collection! Just curious, where did you source them? What motor are you using?

My primary bike had not been getting much use since I motorized my Reign. So I added a motor to it last December and have been riding it ever since. I have about 35 rides on it now. It's a 2013 Giant Trance 29er, modified to be as close as possible to my Reign. I installed a Reign suspension...

My VESC is set to: Motor Current 75 Amp Battery Current 40 Amp (I often see 44+ Amp peaks on the wattmeter after my ride...) MOSFET temp cutoff start 85C (default) MOSFET temp cutoff end 100C (default) But remember, I only use high power for a few seconds... I ran a few tests when I had the...

I received the Mystery 6384 motor a while ago. It took about 6 weeks to ship from China. I have 5 rides on it since the end of January. Power: I originally ran the D5035 (orange) motor. I switched to the Turnigy 6374 motor mid last year. The 6374 was a bit stronger (and heavier). The new...

What can I say - I'm a sucker for a sexy motor! Do you happen to know the keyway dimensions? (Hopefully 3mm wide...)

I borrowed some pics of the Turnigy 6374 from the eSk8 website just for comparison. I think stator volume is probably a reasonable metric to compare motors (assuming other parameters are similar). Here are some rough stator dimensions from my motor spreadsheet. I didn't measure them myself...

Nice find! Compared to the Turnigy 6374 130Kv I've been using for a while, it looks like it's only 5% (48gm) heavier and it has about 22% more stator volume. 120KV is a bonus. Did you get it off EBAY? By the way, https://electricscooterparts.com/sprockets25chain-motor.html has a selection...

I like the drill planetary. Just curious - can you recommend any specific drill models? Do you know if anyone has taken a drill planetary and mated it to a bike friendly case? What is the typica reduction per stage? Might actually be worth buying a new high end drill just for the motor and...

Just for fun, I went here to take a quick look at power requirements. http://www.u.arizona.edu/~sandiway/bike/climb.html That says you would need about 360 watts. However, I believe that is average power for a climb, and assumes perfectly graded and compacted dirt. I also believe that is...

Fixvid - Grantmac makes a lot of good points. Designing and developing a proper gear reduction will probably be about an order of magnitude more work/difficulty than a single reduction system. I learned long ago not to build anything that I could just buy. I just took a quick look at the...

Your lowest gear is close to my 2nd gear. I can usually climb most hills in second, although lately I'm relying on first gear more often. I climb around 100-200 watts. HOWEVER, if I take my feet off the pedals and try motor only, it falls on its face, even at full throttle. Barely climbs...