I finished my hybrid 500 watt/2stroke/pedal board track bike, Hub motor used to start the 2 cycle instead of pedaling. The e hub is also used to power away from dead stops without engaging clutch to feather away from stop signs etc. the small clutch should now last forever. three way power gives options. The 36 volt lithium battery powered hub is good for 20 mph easy. Clutch lockout is simple and fast so overheating at stops or in slow traffic no longer a worry, o as slow as you want with the e-motor. I can now gear up from a 48 t sprocket (needed for dead stop no pedal starts) to 36 tooth rear drive sprocket which will really relax the rpm's at my preferred cruising speeds.

Left and right hand throttles with e-throttle on the left. Learning curve was easy. Two twist controls were once the norm with one controlling spark advance and the other fuel...this isn't something radically different, just new to most.

If I run out of gas or break a drive chain I can now use the front e-hub to get me home and it still pedals as well. Practical no pedal assist e-range at 10 to 15 mph I'd guess at no more than 15 miles...pedal assisted add 5 to 10 miles (depends) It's a 12 amp pack but the bike is now at about 85 lbs. and not a light weight. The modified two stroke puts out  2 stroke puts out 5 hp + so it's fuel mileage isn't great but still manages between 75 and 100 mpg.

Because of the extreme board track saddle location, almost over the rear axle center line, the bike has always been light up front. With the extra weight up front balance has been restored and the bike handles better. All the extra weight of hub and batteries is positioned low and COG is also improved as well.   

When you're riding!

Rick C.

Hummer engine was a great choice and painstaking attention to detail resulted in a beautiful little bike...well done!

Rick C.

e-bikes

That's pretty leather work!

Rick C.

Dave that's a great looking bike! I'm sure not a purist, but I'd find it hard to find something about your restore that I object to. Great work.

 It seems we are almost neighbors, just a half county separating Cordell from your location. I'd enjoy meeting you some time for coffee and conversation.


Rick C.

Where was the compression release valve body located on these early motors, head or crankcase? I'd be interested seeing in either a photo or diagram to illustrate both it's location & design if it's convenient. I've always placed my own 2 stroke releases for high compression race motors (several decades ago) on the crankcase housing, but some like C.R. machine works build theirs in head for  after market heads powering Chinese built 2 stroke bicycle motors. 


Rick C.

I'm waiting on the machine shop for some custom side car parts. Since I sold my shop & the new owners recent passing I'm relegated to waiting for parts...which I'm not really good at. What goes around comes around it seems, small jobs have no sense of commercial urgency.

Fat e bike gets some fabrication time this week and next as I modify the frame to mount the 3 hp Lifan 4 stroke & CVT. All wheel drive, tri-power gas & electric fat tire buggy bike. Absolutely no thought or effort to make this pigs ear into a purse; just function, safely and dependably.

For those interested in my results with the upgrade, of sorts, in batteries. The 48 volt lead cell 5 amp batteries were swapped to 20 amp/48 volt and I've registered two rides over 25 miles with power to spare. GPS average speed on the last one was 12 mph. Twenty five mph seems about top speed on flats, no pedal assist. I'm happy with the lead cells initial performance...long term? The price made my decision easy, for my use, but this isn't a shot at lipo technology and it's very real benefits; just my reality. I'll be using the same lead packs to power the Simplex sidecar as well, though I'm thinking that two packs wired parallel & series gives both the power and extra weight I'm looking for with the side car.

Rick C.




Rick C.