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Post by royldoc on Oct 8, 2011 22:37:56 GMT -6
The header pipe on my 50cc trike broke again today. This is the third time. It broke about one inch from the flange. The first one broke at the flange weld. The second one broke at about two inches from the flange. This one was made of thick walled pipe. I also made brackets to mount it more solid to the engine and frame. I'm going to redo the mounts and the header flange and pipe. I might look into trying some sort of flex connection. For some reason the pipe is getting stressed at this point.
Roy
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Post by tvnacman on Oct 9, 2011 8:14:54 GMT -6
Roy , there must be some stress on the muffler pipe causing it to crack . Have you thought of replacing the muffler and pipe , maybe it was not fourmed just right . I'm no fan of proformance parts , but maybe you may get lucky it might be form fitted better or heaver .
John
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Post by Alleyoop on Oct 9, 2011 9:47:27 GMT -6
Has to be where the muffler attaches to or Bracket on pipe to frame is NOT moving with the engine vibration. That will in a minute break something.
Alleyoop
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Post by royldoc on Oct 9, 2011 10:05:18 GMT -6
John, the original muffler and pipe was replaced long time ago. After it broke the first time. I put a supertrapp muffler on it. I also had a header pipe made. I think this time around I'm going to get a 2"x4" flex pipe and put between the muffler and header pipe. I might try a smaller muffler, like this. www.jackssmallengines.com/strapmain.cfmRoy |
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Post by tvnacman on Oct 9, 2011 10:20:52 GMT -6
that looks interesting , what are your feelings about why it is breaking ?
I remember you did fuel injection on a 50cc have you given any thought about doing it on the 300cc ?
I was wondering where you got the fuel injection kit ?
I wish you luck with the muffler!!!!
John
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Post by royldoc on Oct 9, 2011 10:47:53 GMT -6
Like alley said the pipe and muffler is not moving with the engine. The muffler is mounted to the frame solid. after it broke the last time I made brackets and mounted the pipe to the engine. I am thinking that the engine mounting bushings are allowing the engine to move to much. If I hold the brake and rev it the engine is twisting in the frame. So a flex pipe at the muffler and new bushings should cure this. I will put E.F.I. on the 300. I got the kit from ECOTRONS. www.ecotrons.com/index.php?ncr=1. Here is another. www.mbe-motorsports.comRoy |
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Post by leenark on Dec 8, 2011 9:14:04 GMT -6
Roy: I'm interested in the 300 Magnum EFI conversion. Please take lots of pictures and notes when you do it. vr, Lee
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Post by mike6736 on Dec 8, 2011 11:15:09 GMT -6
Roy I changed my rear motor mounts and and put solids in, had to make them. Been over 3,000 miles now and she vibriates about the same. The rubber ones totaly failed and motor moved up and down
Mike
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Post by Alleyoop on Dec 8, 2011 12:53:32 GMT -6
HEY LEE, Welcome to the forum and may I say a very peacefull one at that. Good to have you on here bud You, Mike and Roy are the 300cc Trike Gurus.
Lefty
Mack2
I mean ALLEYOOP
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Post by mike6736 on Dec 8, 2011 14:10:36 GMT -6
fuel injection on a Magnum?? Roy you gonna make a rocket ship out of that thing?? I tell ya you and Lee are not happy unless your going 100mph or more and your hair is on fire...
Mike
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Post by Alleyoop on Dec 8, 2011 14:28:11 GMT -6
Maggo, that is funny had to take a piss I was laughing so hard "100mph or more and your hair is on fire"
Alleyoop
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Post by leenark on Dec 9, 2011 8:52:45 GMT -6
Alleyoop...take one or leave one??? I've always been a triple digit midget. Hey Alley bought a new 392 Challenger...out of the box 12.26 in the qtr at 115. Man I love this thing. 23.8 MPG on the interstate, not that good in the city.
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Post by Alleyoop on Dec 13, 2011 22:09:42 GMT -6
Lee,
WOW!! out of the box 12.26 that sucker is putting some horses at the rear axle to get into the low 12s, not many will out do that on the street, most hot rods on the street run 13s.
Just another 50 ponies it will run around 11.75, once you get them into the 12s it usually takes around 100 horses to knock off another second.
Yep, I think it shuts off cylinders once at cruseing speed that is why the good highway mileage.
Nice short
Alley
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Post by mike6736 on Dec 13, 2011 22:39:41 GMT -6
Lee got a new toy....Crap that thing is FAST man...
Mike
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Post by rapidjim on Dec 14, 2011 8:09:21 GMT -6
HEY LEE, Welcome to the forum and may I say a very peacefull one at that. Good to have you on here bud You, Mike and Roy are the 300cc Trike Gurus. Lefty Mack2 I mean ALLEYOOP Welcome guys Jim |
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