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The SBP Jack Shaft rules !!!


Discussion at Motorized Bicycle Engine Kit Forum in the Pictures and Videos forum. I have taken my sweet time getting to a camera finaly got one heres some long over due picts . I ...
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Old 03-22-2009, 12:37 AM
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Talking The SBP Jack Shaft rules !!!

I have taken my sweet time getting to a camera finaly got one heres some long over due picts . I will edit and take better ones later. I have run the J.S for about a week now , and can't Imagine life without it. The bike coast like a dream the little china one lunger will live longer with gears. So will the clutch . SBP good job guys!!!!!!!!!
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Old 03-22-2009, 01:22 AM
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Default Re: The SBP Jack Shaft rules !!!

Well heck I gotta figure out how to get my picts to load
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Old 03-22-2009, 01:26 AM
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Default Re: The SBP Jack Shaft rules !!!

see if this works
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Old 03-22-2009, 01:38 AM
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Default Re: The SBP Jack Shaft rules !!!

I had to learn how to use the linux Ubuntu Gimp image editor. I am rocken now! Bike Guy Joe it took me year to get to it heres some picts.
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sbp-jack-shaft-rules-p1070030.jpg  sbp-jack-shaft-rules-p1070033.jpg  
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Old 03-22-2009, 01:45 AM
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Default Re: The SBP Jack Shaft rules !!!

more picts PO mans tuned pipe used roofing washers drilled the out welded three together at the bottom threw out the baffle . My thoughts was that the pipe could naturally expand the gases with the baffle at the bottom , rather than at the center of the pipe where the baffle was. This bike is on its second CH last one went 5000 miles in about a year! I really want a tuned pipe . Maybe SBP will release one soon?
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Last edited by goat herder : 03-22-2009 at 05:58 PM.
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Old 03-22-2009, 06:28 AM
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Default Re: The SBP Jack Shaft rules !!!

nice job. glad you like it.
as soon as i can, i have to get a few for my bikes.
i havent heard but perhaps one or two minor complaints (fixed now) about the shift kits.
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Old 03-22-2009, 07:22 AM
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Default Re: The SBP Jack Shaft rules !!!

Looks great Herder. What a great invention! SBP pulled out all the stops on this handy unit. I wish my pedal sprocket on my Spoiler was not 2 feet in the opposite direction I would install one of those babies in a heartbeat.
My next build will definitely involve that jackshaft system, I have a feeling that it would be a plus on solving driveline and vibration issues. SBP should get a medal for the idea. Happy building Loubuilt.
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Old 03-22-2009, 05:23 PM
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Default Re: The SBP Jack Shaft rules !!!

phil wood they make different sizes I used a 73x122 good have gone to a 135 I had a sealed bottom bracket left over in Shimano. Look closely at these upon install {use blue lock tight , order there special socket] it is totally possible to move it to the left of the bike or the right. Centering the cranks is a piece of cake! Hope this helps, when I peddled everywhere in my day It was very important to me to be set evenly on a bike . There are a lot of bikes uneven at the bottom bracket these days. ONE OF MY BIGGEST PEIVES.....Phil Wood - ALL: Aspire VeloTech Secure Online Store They are really quit fool proof too I have peddled 6000 miles on these before with no probs at all changed it out cause I was bored!

Last edited by goat herder : 03-22-2009 at 05:28 PM.
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Old 03-22-2009, 06:21 PM
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Default Re: The SBP Jack Shaft rules !!!

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Originally Posted by goat herder View Post
I really want a tuned pipe . Maybe SBP will release one soon?
Believe it (or not) - we have 25 tuned pipes all kitted and boxed..........less the silly exhaust gasket....we have been sitting waiting, for, yes, gaskets!! We are really hoping they show up soon.

Thanks for the comments !
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Old 04-02-2009, 01:33 AM
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Default Re: The SBP Jack Shaft rules !!!

Sorry some of the pict are blurry yet heres what I dun. Ok some shod job of welding. This is loads better than stock. Hope this helps someone. I drilled holes in the original baffle etc. It only led to scavenging. This is clearly the best cheap mod besides port matching that I ever did. Note the aluminum foil as a gasket at the baffle. The original flange got weak from porting and a hanging off the jug unsupported , it warped partially from custom bending the muff pipe. Had to weld a new flange on top of the old one. Last supported the muffler to the engine mount. I now believe it is important to support the muff , so not to warp the jug or the flange. In this pict on this one I forgot to mention I finished out with 6 washers. Second from last washer had bigger holes I was sorta thinking about a slowed down sponge of sorts hope this helps. It does run like a scalded dog! really no complaint for power had it up to 44mph. In a D@#@ safe place. Major prob oil on the bike lol.
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sbp-jack-shaft-rules-p1010006.jpg  sbp-jack-shaft-rules-p1010007.jpg  sbp-jack-shaft-rules-p1010008.jpg  
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Last edited by goat herder : 05-05-2009 at 11:18 PM.
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