Motorized Bicycle Engine Kit Forum
Register FAQ Members List Calendar Mark Forums Read


Search Titles Only

Sponsors
Donations accepted to help with server fees and other expenses. Thank you!


Go Back   Motorized Bicycle Engine Kit Forum > Bicycle Motor > High Performance Bicycle Engine Tips

High Performance Bicycle Engine Tips We all want our bicycle engines to push our bikes faster. Get exclusive engine modification tips and suggestions from us.

loud and fast


Discussion at Motorized Bicycle Engine Kit Forum in the High Performance Bicycle Engine Tips forum. so i took the screw out from the end of my muffler and took the cap and connected pipe out. ...
Reply
 
LinkBack Thread Tools Display Modes
  #1 (permalink)  
Old 08-27-2008, 12:59 AM
rickdiculous's Avatar
Motorized Bicycle Apprentice
 
Join Date: Aug 2008
Posts: 16
Default loud and fast

so i took the screw out from the end of my muffler and took the cap and connected pipe out. took it for a spin and could'nt believe the difference. it was way faster and more responsive, no more "four cycling". could i burn something up running it like this? are there some simple mods that i can do and still keep it semi quiet?
Attached Thumbnails
loud-fast-ratrod-3.jpg  
Reply With Quote
  #2 (permalink)  
Old 08-27-2008, 01:23 AM
VENICE BOY's Avatar
Custom Builder / Dealer
 
Join Date: Mar 2008
Location: Venice Beach, CA.
Posts: 507
Default Re: loud and fast

Quote:
Originally Posted by rickdiculous View Post
so i took the screw out from the end of my muffler and took the cap and connected pipe out. took it for a spin and could'nt believe the difference. it was way faster and more responsive, no more "four cycling". could i burn something up running it like this? are there some simple mods that i can do and still keep it semi quiet?

I ran my "Bomber" Bike like this!!!
They are really fast & powerful without the baffle!!!!
It won't hurt it running it like that.
The best compromise is to drill a few 3/8" holes in the end of the baffle. (A little more power, a little more noise!)

Last edited by VENICE BOY : 08-27-2008 at 01:29 AM.
Reply With Quote
  #3 (permalink)  
Old 08-27-2008, 07:40 AM
Bikeguy Joe's Avatar
MODERATOR
 
Join Date: Jan 2008
Location: Ashtabula county, Ohio
Posts: 4,245
Default Re: loud and fast

Remove baffle, replace end cap, enjoy.
__________________
If it ain't broke, and you mess with it long enough, it will be.
Reply With Quote
  #4 (permalink)  
Old 08-27-2008, 11:18 AM
Andyinchville1's Avatar
Manufacturer/Dealer
 
Join Date: Dec 2007
Location: Charlottesville, VA
Posts: 339
Default Re: loud and fast

HI,

For quiet you can do this.....Large volume muffler means zilch back pressure for all practical purposes....Quiet too!

Andrew
Attached Thumbnails
loud-fast-dsc04603.jpg  
__________________
Sprockets now available in 9 anodized colors!

http://www.myspace.com/kingssalesandservice
http://www.youtube.com/watch?v=-zyU8n41f2c
Reply With Quote
  #5 (permalink)  
Old 08-27-2008, 01:23 PM
D.J.'s Avatar
Senior Motorized Bicycle Builder
 
Join Date: Jan 2008
Location: Canada
Posts: 96
Default Re: loud and fast

A classic cherry bomb would look good but I would imagine that the glass pack would just collect the black ooze that normally comes out of the pipe . ...... D.J.

__________________
If you don't have dreams , your dreams can't come true .
Reply With Quote
  #6 (permalink)  
Old 08-27-2008, 11:30 PM
rickdiculous's Avatar
Motorized Bicycle Apprentice
 
Join Date: Aug 2008
Posts: 16
Default Re: loud and fast

thanks guys. today i port matched the intake and ehuast, cut off the pipe connected to the muffler end cap and drilled the holes in the baffle plate out. it just started raining so i cant take any hot laps. i'll have to get back to ya with my progress.
Attached Thumbnails
loud-fast-shop.jpg  
Reply With Quote
  #7 (permalink)  
Old 08-28-2008, 12:15 AM
Motorized Bicycle Apprentice
 
Join Date: Aug 2008
Location: OC, California
Posts: 5
Default Re: loud and fast

Too bad we have noise pollution laws here. I took the end out and what a difference. But I did wake some napping kids in the neighborhood. I got to try cutting the pipe as well.
Reply With Quote
  #8 (permalink)  
Old 08-28-2008, 08:15 AM
Bikeguy Joe's Avatar
MODERATOR
 
Join Date: Jan 2008
Location: Ashtabula county, Ohio
Posts: 4,245
Default Re: loud and fast

When I removed the baffle from my first engine I could hardly tell any difference when run side by side with a "stock" muffler.
__________________
If it ain't broke, and you mess with it long enough, it will be.
Reply With Quote
  #9 (permalink)  
Old 08-28-2008, 09:59 AM
Motorized Bicycle Apprentice
 
Join Date: Aug 2008
Posts: 1
Default Re: loud and fast

Hey guys im new to the site and I was wondering, I know removing the baffle elimanate back pressure but isnt some back pressure necessary for a two stroke to work properly
Reply With Quote
  #10 (permalink)  
Old 08-28-2008, 03:04 PM
Bikeguy Joe's Avatar
MODERATOR
 
Join Date: Jan 2008
Location: Ashtabula county, Ohio
Posts: 4,245
Default Re: loud and fast

It doesn't remove all backpressure. A two stroke will run without a muffler, it's just hard to get good throttle response from off idle to upper midrange..
__________________
If it ain't broke, and you mess with it long enough, it will be.

Last edited by Bikeguy Joe : 08-29-2008 at 07:25 AM.
Reply With Quote
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -5. The time now is 10:35 AM.


Advertisers

Powered by vBulletin® Version 3.6.8
Copyright ©2000 - 2008, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.1.0
Motorized Bicycle Engine Kit Forum