A standard diff sends all the power to the wheel in slippery mire, the wheel on solid ground doesn't get any power. It just turns the one w/ the least turning resistance. An overriding diff acts like both wheels are locked for receiving power so power goes to both wheels, not just the one w/ the least resistance. Also, both are free to turn faster than the other wheel, such as in a turn. They're easier to machine, no gears. The downside is they power only the wheel on the inside of a turn.
minibulldesign built a tadpole trike w/ 26" wheels all around. He said he doesn't take turns very fast, or sharp, because he feels them bend when they get a side load. Animas Quadracycle uses 20" wheels and makes disks to replace the spokes. Watch his videos! I ride a Sun recumbent delta trike that's rated to 400 Lb.s. It uses 20" wheels w/ lots of spokes. I put 100 psi in my tires & don't feel a lot of rolling resistance, but I do feel the 60 Lb. trike plus the 60 Lb. dog I haul along.
Sr. Estamos começando a fabricar handbikes pra cadeirantes aqui em Novo Hamburgo/RS, para passeios, não corridas, sem interesse comercial e sim social, no entanto nos deparamos com uma situação na tração traseira: o diferencial, já que uns cadeirantes querem adaptar junto motores de bikes (49/80cc 2T). Ví na sua, que parece ter algo diferente nessa questão. Pergunto, poderias nos ajudar? Obrigado, Fabio
Sr. Fábio, o senhor pode usar duas catracas comuns para criar um pseudo diferencial, onde a roda externa ficará livre em uma curva. Existe muitos deltas usando esse sistema aqui no RU-vid. Também construí uma handbike.
@Oogie1st There are diffs out there for trikes but they're a bit pricey. I've wondered why no one runs two chains from the jack-shaft, one for each 1/2 shaft and have a single sprocket freewheel on each of them. You wouldn't get both wheels powering in turns but they'll both hook up in the straight-a-ways. It'd be especially helpful when off-road. Take care.
For a Delta Trike I think this is a nice design, albeit a li'l bit fragile. It could be vastly improved with two freewheels as stated below but I still prefer Tadpole Trikes...
thats good to know as am considering building contraption like a quadracycle and velomobile combined out of wood, considering 26" bicycle wheels at back but don't know if they'd survive long before buckling, think i'll end up using old kid bicycle wheels as there like 12". i was thinking wheelbarrow wheels at start but am thinking they'd slow it down even more.
I have a different brand of trike & I've broken 5 rear derailers in 3 years. I watch the road closely & I manage to avoid most hazards. With that said, there are times when I'm distracted by something else. like making sure the truck coming up on me doesn't smear my guts all over the road, and I hit something, CACHUNK! When you first start riding, you don't know what'll hit it, so you bust 2 derailers before you get a clue. Hint, go over speed bumps w/ both rear wheels.
ok cool, i was only thinking 26" on back, so am alright as am going to stick small wheels on front. ive seen a few of the animas quadracycle.am not going to hauling anything with it, ive just got to make it able to haul all 196 lb of me, plus few spaces
besy layout without question if theres better it ll be from here or a take off reeallly like the pedals behind tghe wheel hate em out in fromt it is howe you say el dorko
It's definitely a possibility if you straddle a decent size rock, branch, etc. There is a degree of protection afforded by the fact that the rear derailleur sits between the two rear wheels, but anything that can get in between them is a potential buzzkill.
looks the part Cool . but nothing New here. this is a one wheel drive . see only one axle side is use'd "No diff" may be higher Friction losses in useing two loops of bicycle chain.on the drive line. .
Two wheel drive is easily obtainable simply by using two free-wheels. One on each half axle. Particularly when a jack shaft is already provided as in this Rans machine. It seems that Rans can't do a simple browser search for trike 2WD. Or don't care to provide two wheel drive at minute extra cost. That said, one wheel drive is perfectly adequate except for the slipperiest of conditions. It hardly matters with such a poor frame design.
