Photos & Bicycle Builds

Pictures of motorized bike projects and bike builds. Vote for the best build!
Oh my. I stopped here for my mental health. I added some update photos for my urban fatbike. A few things changed for 2023. I used some focused LED lens caps on my indicator / turn flashers. Now they are visible from the sides AND I can see if I left my turn signal on. Tinted some lower headlight LED panel bulbs to make a yellow-bordered arrow, as they are tied to the signals. Tucked the headlight in, moved display forward, added a handlebar bag, new Tribit Stormbox Micro mounts. They flip up, both to get in my front bag, or to blast rude music forward 😈 Down, they're closer. I can go down the hill, tuck in with my face in the speakers, and I'm 16 again riding in my car with the Mindblowers cranked to 10 muhuaaaaa... I have to...
A pexmor 48cc kit on a 94 Trek 820 frame with a 21" center tube. Bought the dual brake lever at the bike shop and the mirror on amazon. The rest of the parts have been generously donated by walmart bikes that have been parked for years in my family's garage. I need a new cdi as the one that came with the kit reads OL when trying to test the capacitor (multimeter has a capacitance measure mode) and I get no spark. Magneto and coil works because it read 3.3 VAC (turned by hand) Waiting on my next paycheck to get the correct derailleur and a new cdi. I'm not happy with the chain tension. The stock tensioner doesn't seat the chain properly due to the angle of the chain stays. The chain is as short as it can be with whole length links, its a...
Round 2.. lol.. had an issue with my other case so I had to do a complete rebuild.. all new SKF crank and clutch bearings, balanced crank with AF80 rod and wiseco needle bearings, Slightly modified piston, shh.. I used Athena's window design.. lol.. it's also gasket matched, case port matched. ARP head studs.. why? 160psi in my 0.76mm squish gap is why.. all fed by a Mikuni vm20 and some Sunoco GT Plus 104 that I'm going to get in about an hour or so when they open.. I know I don't have to but I want to.. besides when someone else is paying for it, I'll get it all day long... Should be a decent little beast tho... I hope 🤞 I'm goin to get some beer.. I mean breakfast. Ehh whatever, breakfast beer sounds good
This is my first post, but my second motorized bike. The first was a Kent mb with a 66cc that i bought completed. It was great, but I gave it away a few years ago before ever doing anything to it. I've built a 48v/1600watt scooter for running my dogs that I gave to my nephews, and a 48v/1000watt fat tire mb that i still own at another property. my main complaint about electric bikes has always been up-front cost, don't store well, and break-fix cost. It seems if you let the ebike sit for a few months and come back, something is now not working... moisture got to something... your $400 battery is half the ah or totally bricked... something. So I decided last month to try a cheap yd100 budget build for going 8mi back and forth from the...
This time last year I was planning my gutting of my tadpole, to fit my fatbike with a BBS02. Ran the hell out of it last year. Wife wasn't doing so good. What a difference a year makes, she's healthy, and asking if her trike ready to go. Said I have to ride a trike to, thats our thing (pouty face). So, I pouted up a Bafang 48V500W rear hub and bought it. Its pretty peppy. It cruises up to 25mph pretty fast. Its more a greenway and park and country road cruiser, not a street runner. It won't be as versatile as the 7x3 hub on a middrive. It'll be easy. And a lot less chain wear, for a chain 3 chains long thats big. I think I'm gonna like the change. I forgot how nice it was to kick back and ride.
this one is full of gems. front fork as rack?? jb welded hole in block?? worthless cantilever break as throttle cable connector? engine plate made out of craftsman mower deck?? engine power makes the roller bite harder? this thing is so fun. rev it up, dump the clutch, repeat. pops small wheelies. tops out at 22, all motor, 25 if ya pedal. what a treat
I finished my break-in of replacement 48cc. It went lots smoother with everything else nailed down. I'm shooting for a lot more than 700 miles on this one. I reworked everything, found the good, fixed the bad. The jackshaft mount held up good considering it took a lot of hits, bearings good, shaft good, and crankset side good. But, it still had a twist, probably from when I tossed it over a hill. Knee and calf still hurts so yeah beyond operation parameter. The 21T sprocket only 415 width, wore out, chain wore out. Too thin too much slop. I redid engine mounts and welded a stiffener plate to jackshaft bracket, welded up a mount spacer for engine, drilled exact fit. No more sloppy wallowed out hole, no shims. I shifted engine a bit...
quickie 10 bolt FD bike. trying to do everything with tools some modest shed in town might have. yes im using a welder, but im limiting myself to a simple flux core unit. no tig, no lathe, no mill, no cnc, no broaching keyways, just a drill press, grinder, tap set, belt sander or a flap attack if youre desparate. i want this to be able to go on any bike with minimum hassle, and everything either clamps on via rubber mounts, or bolts to trailer hitch, waterbottle, rack provisions. may change my rear tire, i dont wanna wreck that one. this is going on my "good testing bike" used for hard enduro, and occasional shenanegans. i want this bike to be able to be returned to normal use. also it saluminum frame, so that may be a challenge. i...
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