Love it! I would buy 2 of them; One to wreck and one to ride after I wreck it. Weight and strength will be a big obstacle on these. If done right, they will sell like crazy.
I thought the barn-built vintage depended upon the sportster engine already having been passed through all the red tape. So it was a "modified sportster" with a quiksilver carb and supertrap muffler and a new chassis.
The suspension bits if chosen well should be fine, the weak link is the wheels. Careful selection there and you should be fine.
Bear in mind you are more likely to bent rims, handlebars, etc. than with moto-spec parts, but the difference in mass should make it quite the ground flier. Easily fast enough to get you in trouble, and isn't that the point?
I'd have to try one to see if the fixed gearing on the pedal power part is ok, but it looks not too bad in the videos.
Tempting toy. I'd want the most powerful engine possible, but can see the advantage of keeping it strictly legal for road use.
Of course, "repairs" may accidentally replace the engine parts with "oversize" bits that may render it not..... proper. One must keep an eye on such things. Like an Experimental aircraft, you are responsible for your own maintenance and keeping things to spec....
After seeing this post, and doing a lot of research, I decided to build my own / version. I wasn't interested in the moped, but a full size lite weight trail bike. so I started collecting parts, for my first prototype experiment - I used a Chinese 125cc pit bike, that I found on CL. I stretched the frame, changed the head angle, built the swing arm & lowered and moved the foot pegs back three inches. I used Marzocchi down hill forks, and I mix of Mountain bike wheels,8" disc rotors ect.... so I finally got it finished
Final weight is 90Lbs wet, and a total blast to rip around on.. What I like is the weight, taking this bike camping, you just through it up in the trk. And on the trails it is so nimble and fast its almost like cheating.. I have already started the next build using some better components, And the biggest change is going to be an Excell rear rim, the bicycle stuff is nice light, but it wasn't designed to have power on ot either.. I have replace the bent spokes twice.. but like I said the first one was more or less a prototype.