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| 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. |
Expansion Chamber
Discussion at Motorized Bicycle Engine Kit Forum in the High Performance Bicycle Engine Tips forum. Tuned pipes are the easiest and most inexpensive way to improve the performance of a 2 stroke motor. They are ...  | | 
06-16-2008, 05:07 PM
|  | Master Motorized Bicycle Builder | | Join Date: Mar 2008 Location: Bellingham, WA
Posts: 218
| |  Re: Expansion Chamber
Tuned pipes are the easiest and most inexpensive way to improve the performance of a 2 stroke motor. They are typically louder but can be made quiet by improving the silencer. |
06-16-2008, 05:56 PM
|  | Master Motorized Bicycle Builder | | Join Date: Mar 2008 Location: Treasure Coast, Florida
Posts: 601
| | Re: Expansion Chamber
Quote:
Originally Posted by Ghost0  You rarely have to "live with it", my rendering suggests that it is possible. You may need to get a 45 deg fitting to bend the silencer but shouldn't be too hard. |
Your the man. I hadn't put that much thought into it. Now its time to think about it... Thanks Ghost. |
06-16-2008, 06:37 PM
|  | Master Motorized Bicycle Builder | | Join Date: Mar 2008 Location: So.In.
Posts: 170
| | Re: Expansion Chamber
Hey GhostO,You talked me into a tuned pipe.the one I ordered looks to be the same one you have.any problem with pedal crank clearance and what are you using for a kick stand,Thanks,Ron |
06-16-2008, 08:54 PM
|  | Moderator | | Join Date: Jan 2008 Location: Pampa, Texas
Posts: 1,382
| | Re: Expansion Chamber
I'm not GhostO but after I put a tuned pipe on mine had kickstand problems. So I drilled a hole in a short piece of angle iron and bolted it to my back axle. Then I drilled the other side of the angle and mounted the kick stand to it. So the kickstand is basically mounted the rear axle. It really makes the bike sit on the stand better...............
__________________ There are only 10 kinds of people in this world. Those that understand binary and those that don't............
Become a Forever Family, it'll change your life. http://www.galtx.org/ http://bdconner.com |
06-16-2008, 10:04 PM
| | Master Motorized Bicycle Builder | | Join Date: Mar 2008 Location: Bellingham, WA
Posts: 218
| | Re: Expansion Chamber
I am using a rear mounted kickstand as Ilikeabikea suggests, but mine was made for it. I didn't have to modify it. You can get them from most of the bike shops. If you have any questions on mounting the pipe just PM me and I can walk you through it. It is pretty simple.
I didn't have any pedal clearance issues but it does get close. |
06-16-2008, 11:08 PM
|  | Master Bike Builder & Forum Sponsor | | Join Date: Dec 2007 Location: Duvall, WA PNW
Posts: 1,704
| | Re: Expansion Chamber
I never had a kick stand so no worries....
My pedal was very close to my silencer, but with my magic bracket, no worries..... |
06-17-2008, 07:47 AM
|  | Master Motorized Bicycle Builder | | Join Date: May 2008 Location: Decatur,IL
Posts: 225
| | Re: Expansion Chamber
magic brackets? hmmm!
__________________
I'll keep rollin "FileStyle"
"I'am just a penny short of being a millionaire"
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06-17-2008, 10:40 AM
| | Master Bike Builder & Forum Sponsor | | Join Date: Dec 2007 Location: Duvall, WA PNW
Posts: 1,704
| | Re: Expansion Chamber
Yes a magic piece of Al sheet bent at a magical angle with three magic holes drilled in it. Top hole too low, bottom hole too high - middle hole just right!!  
Last edited by Pablo : 06-17-2008 at 10:42 AM.
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06-17-2008, 11:14 AM
| | Moderator | | Join Date: Jan 2008 Location: Pampa, Texas
Posts: 1,382
| | Re: Expansion Chamber
Pablo, it appears to me that one is not to high nor is another to low. It is a "universal" magic bracket. ........................................
__________________ There are only 10 kinds of people in this world. Those that understand binary and those that don't............
Become a Forever Family, it'll change your life. http://www.galtx.org/ http://bdconner.com |
06-17-2008, 12:14 PM
| | Master Motorized Bicycle Builder | | Join Date: May 2008 Location: Decatur,IL
Posts: 225
| | Re: Expansion Chamber
oooh its magic
__________________
I'll keep rollin "FileStyle"
"I'am just a penny short of being a millionaire"
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