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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.

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  #1  
Old 07-05-2009, 07:22 PM
drhofferber drhofferber is offline
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Default direct air and duel exhaust...

First let me thank cabinfever for the idea of direct air...i put the finished product on my 50 slant...i dropped the neddle setting down a notch and with the air intake it has smoothed out my start and added to my top end by 2 mph...and its smooth...i took my large expansion pipe off and went with deul exhaust 13.95 plus shipping...smooth...ha...thanks...enjoy...Dennis
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  #2  
Old 07-05-2009, 10:08 PM
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Cabinfever1977 Cabinfever1977 is offline
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Default Re: direct air and duel exhaust...

you are welcome,its all about trying new ideas out and to get a smoother running bike.
i origionally did this to relocate the airfilter since i didnt have room for one on my roadmaster sx sport(my last build) and it did so well that i kept using it on my new bike a scwhinn delmar cruiser even thou i now have room for a fullsize airfilter in stock location. I am looking to do a redesign on the pipe and filter for even more performance and i will be doing something to quiet down the clutch and cover. plus i need to clean out my muffler sometime(darn power robbing black cat muffs).
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  #3  
Old 07-05-2009, 10:15 PM
drhofferber drhofferber is offline
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Default Re: direct air and duel exhaust...

Quote:
Originally Posted by Cabinfever1977 View Post
you are welcome,its all about trying new ideas out and to get a smoother running bike.
i origionally did this to relocate the airfilter since i didnt have room for one on my roadmaster sx sport(my last build) and it did so well that i kept using it on my new bike a scwhinn delmar cruiser even thou i now have room for a fullsize airfilter in stock location. I am looking to do a redesign on the pipe and filter for even more performance and i will be doing something to quiet down the clutch and cover. plus i need to clean out my muffler sometime(darn power robbing black cat muffs).
get rid of that black exhaust...cuts power down alot....as far as the sound from the clutch cover, i bought some of the krylon rubber paint and sprayed it in the inside of my covers...3 coats...works good...catch you later...Dennis
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  #4  
Old 07-06-2009, 01:40 AM
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the_edge150 the_edge150 is offline
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Default Re: direct air and duel exhaust...

AHHHHH!!!!!!!!!!!! the bad memories!!!!!!!!! i did that with my air filter, and a rock got in, all the way into cylinder, and took a good sized chunk out of it.
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  #5  
Old 07-06-2009, 02:24 AM
drhofferber drhofferber is offline
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Default Re: direct air and duel exhaust...

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Originally Posted by the_edge150 View Post
AHHHHH!!!!!!!!!!!! the bad memories!!!!!!!!! i did that with my air filter, and a rock got in, all the way into cylinder, and took a good sized chunk out of it.
well i have two screen filters as you can see in the parts...and if it does happen it would give me an excuse to change it to a 80cc...by the way how did it perform while it was working...thank you...Dennis
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  #6  
Old 07-06-2009, 02:28 AM
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the_edge150 the_edge150 is offline
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Default Re: direct air and duel exhaust...

see, i had no screens. and the performance was exeptional. ubntil i went through the quarry.
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  #7  
Old 07-06-2009, 11:34 AM
xlite xlite is offline
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Default Re: direct air and duel exhaust...

Engines without airfilters will have very short life. With or without rocks going in, with or without screens..
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  #8  
Old 07-06-2009, 11:53 AM
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Pablo Pablo is offline
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Default Re: direct air and duel exhaust...

I thought science told us "ram" air on relatively slow vehicles didn't have any effect.
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  #9  
Old 07-06-2009, 03:31 PM
drhofferber drhofferber is offline
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Default Re: direct air and duel exhaust...

thanks pablo...it is smoother and better top end...just having fun and enjoying the hobby...working on a tensioner...using amisol 80 to 1...ha...buying my own amisol stickers...ha...new exhausts...things that a good hobby should do...thanks for the reply...i.ll keep everyone posted on the outcome...Dennis
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  #10  
Old 07-06-2009, 03:43 PM
Echotraveler Echotraveler is offline
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Default Respuesta: direct air and duel exhaust...

i like it DR very creative!!
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