lasting life of the 2 stroke engine midbike or pocket bike

Just want to have an idea how long usually the pocket bike or midbike will last. Those midbikes are usually made from China and give me the feelings that they won't last really long..... or how do we maintain them to last longer....

very interesting question thouhg I don't actually own a bike yet. there are things one can do to improve the quality overall of of one of these china bikes. ...stripping down the bike of all of it's chinese parts leaving the only chinese part left on the bike being the naked frame. now, building the bike back together with american, euro or japanese parts would imo double the wear and tear life of the bike.

are you concidering a midi bike?

You can convert all the nuts and bolts to American which is simple...but the hard parts is for the motor bolts you will have to drill out and tap the holes....you can just show your bike a lot of love and upgrade to better parts and accesories...and use high quality fuel and oil and clean your motor up...a lot of other things will help your bike last long...

so what you mean is all midbike, for example X1, X2 and cateye have the same engines? I thought X1 and X2 are better made than cateye, correct me if I am wrong...

Well it depends on a lot of things but they just are made for different taste.

The cat eye and X1 have the same engine. I have put about 400km on my X1, and I just changed the cylinder to a reed cylinder, and I noticed that the coating on the cylinder wall was wearing thin. Every thing else about the engine was ok just the cylinder wore out. I use 50:1 mix for fuel, The engine should last 400 km of racing before it wears out. longer if you use a 30:1 or 25:1 fuel mix. But it probably won't be the same for every one. It took me three years to go that far.

I have a cheap chinese gas scooter that uses the exact same engine on the x1 and cat eye bikes and have put in 1250km on the stock motor(timing key, x-can) without any real wear on the cylinder walls or rings. The only thing that went wrong after all those kilometers was a busted needle bearing, which basically ate up all the seals on the engine anyways. But if it wasn't for that needle bearing, my motor probably could have gone another 3000km easy. I ran 32:1 red line synthetic with 89 octane pump gas for pretty much most of those 1250 kilometers. Right now I'm running a much differnt set up with reeds, ported and boosted ported head, windowed piston, tuned pipe, full circle crank, etc.... and I have about 250km on it without any problems. I'm also running only 40:1 now as well.

My cateye was a $300 AutoZone bike. The frame is still holding up, even with a 114cc 4 stroke engine, abused for 2 years by a 280lb rider. Quality bolts do help reduce problems. When it was still a 2 stroke, I had a PBU Headstrong kit, Reed Cage, ProLine Pipe, homemade boost bottle, K&N, 14T counter sprocket, 60T rear. I also had other engines with deifferent setups on it. The one thing that I had problems with was bending and breaking motor mounts. I bent 2 different motor mounts doing wheelies, and broke one engine case where it mounts. The moving parts held up well, the mounts just didn't fare so well on mine.

I have had tons of different set ups on my cateye, all using the stock crank and rod. I Havn't had any internal engine issues. I have in the past had the problem with the engine case breaking.

my motor thats in my mid bike would last FOR EVER. All that would need to be chinged every year or so would be the piston rings and mabey crank bearings.