That's not true at all! A 125 2t makes closer to 30hp and would beat a 250 4t easily since the 2t builds it's rpm faster, has a higher peak and a closer ratio gearbox.I race a h2 750cc 2t against 1000,1100,1200-1600cc 4t's and tbh it's not really fair to them but their just isn't enough 2t's to run against these days.Motocross hasn't had a good 2t in a while ??? All the pro circuit riders use a 2t and I don't think KTM would agree with you ether since their efi 2t's are the top choice atm.
for enduro/woods i would agree with you husky/ktm 2 strokes are top chocies.
I saw the pic of your bike. Is the frame Kustom? Or what type frame was that?
Here is the AMA's pro level specs for the classes and they put 125cc 2t's with 250cc 4t's to keep it fair and 250cc 2t's with 450cc 4t's and now how many pro riders are choosing to race the heavier slower 4t's LOL team riders don't have a choice and very few independent's can afford to race every event to place well over all but when they do race you can plainly see they have way more power!Point is that the 2t's make more power with less displacement simple fact like it or not. 3.2 Engine Displacements a. 250 Motocross Class:0-125cc 2-Stroke / 150-250cc 4-stroke b. 450 Motocross Class:150-250cc 2-Stroke / 251-450cc 4-stroke
My bad man, for some reason when I read it the post came along like a super condescending callout/troll post. Maybe because it pretty much HAS been a year
. 3 days of a crazy sinus headache probably doesn't help the mood. Deleted post . I have made tons of progress but work and distractions have been taking up a lot of time lately so maybe only get to spend an hour or two on it per WEEK. Its currently stripped back down to a frame while I make some final tweaks and do the engine build. Frame will be the weak link, but I need to sacrifice that for the simple fact that it needs to start as a bicycle frame for me to claim any records. If it was a true commuter I would just make a frame from scratch with dual down tubes, proper built in motor plate, and no pedals.He has probably the best frame I have seen of any motorized bike, including mine that I recently finished. I personally think he should have a LOT more power for it but to each his own
.If you are talking dirt bike engines and internal transmission 2strokes then yea thats a HUGE advantage for power to weight...but for the most part these are single speed bikes which are not ideal for 2strokes since they have much more narrow power ranges and need that gearing to get moving. Like I said, there are 70cc AM6s with 20hp but only 9ftlbs of TQ with a very narrow power band. I'd take a 212 4stroke over that...but I'd take a 125cc 6sp 2stroke over both of them!
My rear wheel is all custom, another thing I had to basically find out for myself since no options for 15+hp that I would consider safe. You are correct - bicycle parts won't last.
Never thought of doubling them up. Bet I could tack weld them towards the bottom or around the top and put a few rivets through them to hold together without damaging the brake surface, great idea.
