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| Motorized Bicycle General Discussion Topics on bicycle engine kits, help articles, repair and modifications for your motorized bicycles |
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01-19-2012, 03:00 AM
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Motorized Bicycle Senior Member
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Join Date: Apr 2011
Location: pacific grove
Posts: 80
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Getting all 3 Horse Power out of your GT-5 Sky? (tear down)
Are you getting all 3 Horse Power out of your china 2 stroke? I know I’m not. With the untrue rag joint sprocket, the “California Friendly” catalytic converter exhaust, CNS BS carb, unbalanced crank, Chinese bearings, and unmatched porting, I think I would be lucky to get half the rated horse power for the engine on a good day. So I’m changing all of that. Follow along and leave tips. I’ll also be making videos on how easy doing all this really is.
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01-19-2012, 03:19 AM
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Custom 4-Stroke Bike Builder
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Join Date: Jun 2010
Location: Ridin' inSane Diego, CA.
Posts: 2,861
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Re: Getting all 3 Horse Power out of your GT-5 Sky? (tear down)
Maybe after this tutorial you can show us how to get all 2.5 Horse Power out of the HS 49cc 4-stroke. Just a thought for a future topic.......I've got a few tips for this one.
__________________
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EZ Motorbike Dealer - San Diego, CA.
http://www.ezmotorbike.com/
Nothing is out of my realm,
anything is possible........ Beer is the answer....what was the question?
A sense of humor costs nothing, why don't people use them more often?
"You can't buy respect.....you have to earn it"
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01-19-2012, 03:53 AM
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Motorized Bicycle Elite Member
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Join Date: Nov 2011
Location: Fort Collins & Boulder
Posts: 245
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Re: Getting all 3 Horse Power out of your GT-5 Sky? (tear down)
A video on a happytime rebuild? Im excited, I'd love to see how to do every part of it! Ive been wanting to do this even just for fun and have it ready for a future build
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01-19-2012, 04:11 AM
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Motorized Bicycle Senior Member
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Join Date: Apr 2011
Location: pacific grove
Posts: 80
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Re: Getting all 3 Horse Power out of your GT-5 Sky? (tear down)
Im going to stick to 2 strokes for this thread Scotto- but someone should post a thread for 4 stroke performance that is my next build 
Last edited by recon chris; 01-19-2012 at 11:01 PM.
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01-19-2012, 06:07 AM
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Custom 4-Stroke Bike Builder
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Join Date: Jun 2010
Location: Ridin' inSane Diego, CA.
Posts: 2,861
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Re: Getting all 3 Horse Power out of your GT-5 Sky? (tear down)
Quote:
Originally Posted by recon chris
Im going to stick to 2 strokes for this thread Scotto- but someone should post a thread for 4 stroke performance that is my next build
(pic soon on 4 stroke engine i have) |
Here are a few pics of 4-stroke performance......
URL=http://imageshack.us/photo/my-images/827/img0994a.jpg/]  [/URL]
URL=http://imageshack.us/photo/my-images/535/img0978r.jpg/]  [/URL]
URL=http://imageshack.us/photo/my-images/213/img0754vy.jpg/]  [/URL]
__________________
==================================================
EZ Motorbike Dealer - San Diego, CA.
http://www.ezmotorbike.com/
Nothing is out of my realm,
anything is possible........ Beer is the answer....what was the question?
A sense of humor costs nothing, why don't people use them more often?
"You can't buy respect.....you have to earn it"
==================================================
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01-19-2012, 07:55 PM
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Motorized Bicycle Elite Member
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Join Date: Dec 2010
Location: lakewood ca
Posts: 417
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Re: Getting all 3 Horse Power out of your GT-5 Sky? (tear down)
lotsa room for big valves in their scotto, but too big will ruin botton end just like too big of two stroke ports can do the same thing. a happy medium is best for single speed motors. recon chris im looking to see how you unshroud the transfers, maybe relieving the piston crown?
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01-19-2012, 11:29 PM
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Motorized Bicycle Senior Member
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Join Date: Apr 2011
Location: pacific grove
Posts: 80
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Re: Getting all 3 Horse Power out of your GT-5 Sky? (tear down)
How the work bench looks so far. Look at all those clean parts. Hard to believe that i have been riding it for 8 months
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