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blurredman |
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blurredman World Chat Champion
Joined: 18 Sep 2010 Karma :
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Posted: 15:19 - 10 Oct 2018 Post subject: |
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With that welding work between the frame, and the big tyres on.
Would there be enough room for the rear wheel to use the suspension to it's full potential, without the tyre hitting the frame? ____________________ CBT: 12/06/10, Theory: 22/09/10, Module 1: 09/11/10, Module 2: 19/01/11
Past: 1991 Honda CG125BR-J, 1992 (1980) Honda XL125S, 1996 Kawasaki GPZ500S.
Current: 1981 Honda CX500B - 91k, 1987 MZ ETZ250 (bored to 295cc) - 38k, 1990 MZ ETZ251 - 49k, 1979 Suzuki TS185ER - 9k, 1973 MZ ES250/2 - 17k. |
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bevlak |
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bevlak Two Stroke Sniffer
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Riejufixing |
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Riejufixing World Chat Champion
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- Super Spammer
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bevlak |
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bevlak Two Stroke Sniffer
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Ste |
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Ste Not Work Safe
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Posted: 16:50 - 10 Oct 2018 Post subject: |
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BusterGonads |
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BusterGonads Trackday Trickster
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bevlak |
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bevlak Two Stroke Sniffer
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RhynoCZ |
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RhynoCZ Super Spammer
Joined: 09 Mar 2012 Karma :
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Posted: 20:15 - 10 Oct 2018 Post subject: |
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bevlak wrote: | Ok this is a nightmare. Thanks to everyone who actually helped and goodbye to everyone who didn't. I'm out. |
Just fabricated a baffle for the exhaust. It doesn't have to be perfect. That'll move the torque back to the mid/low range. That is also, by the way, what the YPVS (EXUP) and other systems do. Keep the exhaust choked for the low revs and open up at the top of the rev range.
With a baffle, you have to decide what you want from the bike, or even make several baffles with different permeability. Mid/low range torque makes the motorcycle more user friendly in cities and slow moving traffic.
All you need is a welder, two pipes, two metal discs and a drill.
This is pretty much what you want to make:
https://www.skutry-levne.cz/41d48e526f04e6b742c5b4e32b09b17ef1a53098/thickbox/vlozka-db-killer-turbo-kit-maxi-skutr.jpg ____________________ '87 Honda XBR 500, '96 Kawasaki ZX7R P1, '90 Honda CB-1, '88 Kawasaki GPz550, MZ 150 ETZ
'95 Mercedes-Benz w202 C200 CGI, '98 Mercedes-Benz w210 E200 Kompressor
Last edited by RhynoCZ on 21:16 - 10 Oct 2018; edited 1 time in total |
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stevo as b4 |
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stevo as b4 World Chat Champion
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RhynoCZ |
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RhynoCZ Super Spammer
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- Super Spammer
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Old Git Racing |
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Old Git Racing World Chat Champion
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Ste |
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Ste Not Work Safe
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BusterGonads |
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BusterGonads Trackday Trickster
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Old Git Racing |
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Old Git Racing World Chat Champion
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bevlak |
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bevlak Two Stroke Sniffer
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stevo as b4 |
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stevo as b4 World Chat Champion
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Riejufixing |
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Riejufixing World Chat Champion
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- Super Spammer
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BusterGonads |
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BusterGonads Trackday Trickster
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BusterGonads |
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BusterGonads Trackday Trickster
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RhynoCZ |
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RhynoCZ Super Spammer
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Posted: 15:27 - 11 Oct 2018 Post subject: |
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stevo as b4 wrote: | I'm sorry but I still don't buy that you're going to improve overall a given 125cc engine with your magic baffle.
Im a stubborn cunt, and if I wanted to experiment with and move the torque peak up and down the Rev range on a given bike with exhaust system tuning, I'd rent a dyno cell for a week and make 10, 20 variations of exhaust system to see and log/prove what is happening. I'd want to see my theories proved or disproved in front of me on a screen, instead of believing that welding in a bung to my bikes exhaust has made it better.
Im also one of those people who doesn't have a magic butt dyno that can detect 0.2bhp more or less from riding the bike, and first guess spot on jet sizes to suit. There's plenty of people out there who can though from what I read everywhere. |
It'll be a nice little project for OP, that will cost him next to nothing. There's no harm in that and OP might even learn something new.
Since we're point things out, we are talking about torque, not power. ____________________ '87 Honda XBR 500, '96 Kawasaki ZX7R P1, '90 Honda CB-1, '88 Kawasaki GPz550, MZ 150 ETZ
'95 Mercedes-Benz w202 C200 CGI, '98 Mercedes-Benz w210 E200 Kompressor |
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Old Thread Alert!
The last post was made 5 years, 190 days ago. Instead of replying here, would creating a new thread be more useful? |
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