2 stroke end cans

[M1ke]

Are the end cans there for any other reason except for noise regulations?

Would running a two stroke without its end can break anything other than peoples ear drums?

[Evilbob]

my crosser ant got much in the silencer but still has wodding
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my karma is dieing not fair who cares about spelling? i get the point across, most of the time

[Ste]

Keith/G/Kev will give you more details answers I expect, but it is there to provide back pressure on the engine. It'll run like shit without it.

[one1895]

I think they rely on back pressure? That would explain why they're so hot after riding.
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[McJamweasel]

[EuropeanNC30R...]

I doubt you need the silencer itself, AFAIK thats just there to 'silence'. However it'd almost certainly run lean, and seize fairly quickly, unless it's rejetted to compensate.

[Scotty]

Its actually there to do something with the presure, the expansion chamber takes care of most of it. But i think that end bit of thin pipe is just as important at the start and end of the pipe.
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Regards
Scott

[Kickstart]

Hi

You can run without a silencer, but you might need to play with the jetting a bit. Likely to be a tad on the loud side.

A race "silencer" is normally just a pipe straight through the middle. To absorb some of the noise the pipe is perforated and wrapped in something such as glass fibre matting.

All the best

Keith
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[Craig_]

The silencers can be made optimum to a bike, i.e 50cc will have a 17mm baffle on race system cans.

They optimise performance and the back pressure, now once the gasses have left the expansion there wont be much in it on performance, but theres a lil.

If you wanted to make an under seat exhaust on a 2T you wouldnt use an optimum baffle size as the tube leaving the expansion is long engough causing back pressure.

The whole key to a 2t system is the expansion, but cans help reduce noise and increase the backpressure. Every tried a bike without one? it will be loud and rapid.

Bikes like the RS125 have a highly restrictive end can, the gasses have to flow here there any everywhere before it gets to the end, where as race systems have a straight through. Remove the can on a race system there wont be much more than noise, but a stock system u will feel it pull better.

Jetting can be effected with no cans, but it depends on the system.

My RS50 once i had made my custom can i experimented, got a tap at one end and nowt at the other and it took like 20secs for the water to get to the other end as it was 'waved' routed for restrictions and noise, hence why there will be a lil more drop off on hils on a 2t running a stock system, there restricted all over.
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[M1ke]

The reason I asked is because my ts50 end can dropped off on the way to college today. I thought it sounded really sweet it turned many heads!

Now the question is, where are the jets and how do I adjust them so the bike runs correctly?

[Scotty]

you have to buy different sized jets.
And there on the carb.

Also you'll have to do many plug chops to find out how it runs with each jet.
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Regards
Scott

[M1ke]

Is there no quick way of knowing which jet I should use? also where can i buy these jets? are they expensive

[Scotty]

Couple pound each i'd imagine. i'm only ever ridden with the orginal jets supplied so i'm not the best to ask mike.
i'm sure theres a few companies online that you can buy sets.
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Regards
Scott

[one1895]

[M1ke]

It sounds like a proper two stroke race bike If its not fast you can at least make it sound fast.

[Dr Nick]

just get a dep silencer , no need for rejetting and it hardly silences any of the noise.

[M1ke]

I have a dep silencer, its not loud enough!

[Scotty]

Mike is aa nutter,
I changed my pipe and is quieter and slightly deeper, much better
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Regards
Scott