Bicylce-Engines expansion chamber

Discussion in 'High Performance Bicycle Engine Tips and Motorized' started by shiveralex, Apr 11, 2017.

  1. shiveralex

    shiveralex New Member

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  2. Venice Motor Bikes

    Venice Motor Bikes Custom Builder / Dealer/Los Angeles

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    Since those cheap pipes don't really work, there shouldn't be any tuning needed. ;)
     
  3. TheNecromancer13

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    Why did you make 2 threads that are exactly the same? I thought they were the same thread and thought that my comment didn't show up lol. Well, might as well copy paste my comment here so everyone can see it: That expansion chamber looks really tiny, hardly even worthy of being called an expansion chamber lol. Anyways, I doubt you will see much improvement with one that small, but since you already have it, you might as well put it on and see what happens.
     
  4. Dan

    Dan Staff
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    Howdy Shiveralex, welcome!

    How ya liking your brandy new expansion chamber? I can't be of much help never having tried one. But Folks I trust swear by em.

    But again, Hello and welcome.

    .flg.
     
  5. KCvale

    KCvale Active Member

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  6. shiveralex

    shiveralex New Member

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  7. TheNecromancer13

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  8. Dan

    Dan Staff
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    Dang good lookin' though!

    Do you have any pictures of your bike posted, Shiver?
     
  9. KCvale

    KCvale Active Member

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  10. Dan

    Dan Staff
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    Dang, KC. Your right. What tape would you suggest or would you go with a plate?
     
  11. KCvale

    KCvale Active Member

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    I'd recommend a pipe that goes down.
     
  12. ultralight01

    ultralight01 New Member

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  13. Dan

    Dan Staff
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    LoL, I did an over the top, diy exhaust pipe once. Once. Ended up with a "breather hole" in my brandy new Carhartt winter bib overalls due to (looked cool) heat guard.
    But that was my bad as to design.
     
  14. Dan

    Dan Staff
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  15. Cylon

    Cylon Member

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  16. KCvale

    KCvale Active Member

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    This don't look any friendlier to your

    inner thigh than the last pipe...

    [​IMG]

    I like the SBP X-chamber, you can adjust the turning and the routing...

    [​IMG]

    ... and you can do some really creative things after the pipe to quiet it down if you want to get creative...

    [​IMG]

    That extra exhaust pipe is an auto 'glass pack' muffler welded on the end and plenty far back enough to not be a be a 'thigh burner'.
    That bike really sounded cool ;-}
     
    #16 KCvale, Apr 21, 2017
    Last edited: Apr 21, 2017
  17. Cylon

    Cylon Member

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    My mistake I thought the OP was in reference to proper expansion chambers and tuning, not pipe location.

    Seems like spreading your legs a bit could avoid this burning problem I keep hearing about.

    Here is a good example of what people think is a pipe that will burn the **** out of you but since its quite far back from the engine it hasn't burn my wifes leg at all. I believe this topic is subjective to the person and their abilities to stay aware.

    Also avoid wearing shorts if burns seem to be a frequent problem...

    [​IMG]
     
  18. KCvale

    KCvale Active Member

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    Hhehe... Shorts are all we wear in the summer here.


    Save
     
  19. Dan

    Dan Staff
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    Very cool lookin' pipe, Cylon.

    .flg.
     
  20. Scooterduder

    Scooterduder New Member

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    Hey KC, scooterruder1 here. I just saw you personal bike exhaust set up. Something like that would be perfect on my mountain bike. I'm not sure if that pipe is made for the extra heat that my engine would generate, but I admit I don't know much when it comes to mechanics. Not sure if you'd be willing to do a custom exhaust at this time, but that would be cool. Thanks!

    I saw this review response on sickbikeparts about a complaint with the SBP----SBP response:
    After working directly with the customer to evaluate the cause of his issue we determined it to be somewhat of an extreme case. The addition of a high compression head, reed assembly, carburetor and ignition upgrades all contributed to higher than normal exhaust temperatures. In reality only the seals at the exhaust header saw any serious degradation. Again, this is not typical.
     

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