Animation of a 2 Stroke Engine - PocketBikeForum.com

Thumper · 07-08-2007, 02:26 PM

That's it! It really is that simple

Tom

cag07 · 07-08-2007, 08:09 PM

cooooooooooooooool

WPG Racer · 07-08-2007, 10:35 PM

neat. so how come my cag can run without a pipe if a 2 stroke engine needs it to use as a reservoir for gas/air?

*Sleeves* · 07-08-2007, 10:36 PM

Do not run your bike without pipe , bad for rings , and engine !
look at the pic , the exhuat goes back in , leaving your engine ( running without pipe ) to suck in air , leaning it out big time!

Admin · 07-09-2007, 12:28 PM

As said by tutorials and articles many times, a pipe is extremely important to a two stroke. Of course you can run one without it, but more power is achieved by having a proper pipe on your two stroke which includes a header, expansion chamber and stinger.

You can achieve even more power with a properly tuned pipe, and yes there is an article on that.

cag07 · 07-09-2007, 09:33 PM

got to have back pressure

frikin_bike! · 07-09-2007, 09:37 PM

personally I wouldn't run a bike with out a pipe.. it sucks some of the exhaust back in and if there isn't a pipe on it there is a good chance that it could suck up sand and do damage.. you don't NEED back presure for a 2-stoke engine to run... look at a hmmm a weed-waker there isn't an expansion chamber just a small muffler

suicidal_rider · 07-10-2007, 12:26 PM

....correction for a bike to START! you dont need back pressure. but i have a good example for this, my good friend Nathan (not the most inteligent) had no muffler, and a huge exhaust leak and the bike had absoulotly NO POWER! bike started, but when you opend the throttle bike reved real high and the tire would only spin alittle bit. No back pressure, no power!

inthelead83 · 07-10-2007, 06:24 PM

Quote:

Originally Posted by suicidal_rider

....correction for a bike to START! you dont need back pressure. but i have a good example for this, my good friend Nathan (not the most inteligent) had no muffler, and a huge exhaust leak and the bike had absoulotly NO POWER! bike started, but when you opend the throttle bike reved real high and the tire would only spin alittle bit. No back pressure, no power!

u recive back pressure from the expansion chamber i do belive, so having no muffler just makes it luder. Now yes a bike can start without a pipe, once upon a time my motor got flooded an di was taking it apart i took off the pipe and i pulled the cord to get the gas out and it fired! loud of heck tho my ears were ringing.

frikin_bike! · 07-10-2007, 08:43 PM

ya the sound is UNREAL! once upon a time when I got my first bike (cag) I did a stupid thing and I took the engine out and started her up.. now thats a no no.. you can't keep the thing on the ground

07-08-2007, 02:26 PM	#1 (permalink)
Thumper Better than average Join Date: Jul 2007 My Gallery Real Name: Tom Pocketbikes Owned: 1 Location: Vancouver, BC Posts: 67	Animation of a 2 Stroke Engine That's it! It really is that simple Tom

07-08-2007, 10:35 PM	#3 (permalink)
WPG Racer Pocketbike Freak Join Date: Apr 2006 My Gallery Real Name: Yuri Pocketbikes Owned: 2 Location: Winnipeg, Manitoba Posts: 408	neat. so how come my cag can run without a pipe if a 2 stroke engine needs it to use as a reservoir for gas/air? __________________

07-08-2007, 10:36 PM	#4 (permalink)
Sleeves Pocketbike Dealer Join Date: Oct 2005 My Gallery Real Name: ??? Pocketbikes Owned: 2 Location: winnipeg Posts: 2,513	Do not run your bike without pipe , bad for rings , and engine ! look at the pic , the exhuat goes back in , leaving your engine ( running without pipe ) to suck in air , leaning it out big time! __________________ TRC , Amra , Mra , Smra 06' P1 BMS competition BZM 15.5hp Open 50cc 08' CBR125r 96' Gsx-r 600 1st overall CCMRRS 08' PB Open 50 3rd place round 5 in Pitster Pro Nationals Stock 40

07-09-2007, 09:37 PM	#7 (permalink)
frikin_bike! Moderator One of the good guys Join Date: Jan 2006 My Gallery Real Name: Jeremy Pocketbikes Owned: 3 Location: RM of Portage la Prairie, mb Posts: 940	personally I wouldn't run a bike with out a pipe.. it sucks some of the exhaust back in and if there isn't a pipe on it there is a good chance that it could suck up sand and do damage.. you don't NEED back presure for a 2-stoke engine to run... look at a hmmm a weed-waker there isn't an expansion chamber just a small muffler __________________ winners never win, the people that take you down and take your flag. They are the winners

07-10-2007, 12:26 PM	#8 (permalink)
suicidal_rider Pocketbike Lord Join Date: Apr 2006 My Gallery Real Name: Jared Frizell Pocketbikes Owned: 4 Location: winnipeg, manitoba Posts: 712	....correction for a bike to START! you dont need back pressure. but i have a good example for this, my good friend Nathan (not the most inteligent) had no muffler, and a huge exhaust leak and the bike had absoulotly NO POWER! bike started, but when you opend the throttle bike reved real high and the tire would only spin alittle bit. No back pressure, no power! __________________ BigBone rider TeamRiverCity Rider Smra 40cc class winner I guess I had an overall finish of 3rd in the 40cc class(Pitster PRO) BUT ONLY CAUSE OF THE TEAM!

07-08-2007, 08:09 PM	#2 (permalink)
cag07 Pocketbike Freak Join Date: Jun 2007 My Gallery Real Name: joey Pocketbikes Owned: 2 Location: swan hills,alberta Posts: 391	cooooooooooooooool

07-09-2007, 09:33 PM	#6 (permalink)
cag07 Pocketbike Freak Join Date: Jun 2007 My Gallery Real Name: joey Pocketbikes Owned: 2 Location: swan hills,alberta Posts: 391	got to have back pressure

07-10-2007, 08:43 PM	#10 (permalink)
frikin_bike! Moderator One of the good guys Join Date: Jan 2006 My Gallery Real Name: Jeremy Pocketbikes Owned: 3 Location: RM of Portage la Prairie, mb Posts: 940	ya the sound is UNREAL! once upon a time when I got my first bike (cag) I did a stupid thing and I took the engine out and started her up.. now thats a no no.. you can't keep the thing on the ground __________________ winners never win, the people that take you down and take your flag. They are the winners

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