A careful OCC chopper STREET LEGAL build.

Some more stuff I needed to know.

porting:
http://www.motoredbikes.com/showthread.php?t=5516&highlight=ports+cylinder
http://www.motoredbikes.com/showthread.php?t=5729&highlight=ports+cylinder

Performance tuning
http://www.kreidler.nl/artikelen/performance-tuning-graham-bell/performance-tuning-graham-bell.pdf

cylinder removal:
Oop! wrong shortcut

Piston insertion:
http://www.motoredbikes.com/showthread.php?t=4860 (Augie you rock!)

Gaskets:
http://www.motoredbikes.com/showthread.php?t=5500&highlight=ports+cylinder

I have come to the conclusion that the greatest gains can be had by De-burring/lightly porting and optimizing inlet flow. Most simply with a boost bottle or by making a better manifold. I think I'll just go with the bottle...Looks really cool anyway...Then reduce exhaust back pressure to match.

Augie...You have some really good stuff all over this forum man!

Gary.
 
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Crummy pic of a nice seat. Drifter springer

Better than the original by far!
 

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down, boy! i got 'yer back :LOL: :cool:

:confused: Fly_boy', this is me not sure what to say...since it's obvious you've been reading, i bet you've seen a few real oldies...i figured you were commenting on my personal projects...if yup, thanks.

i also happily see it as a compliment to whole group :)

fast forward----->..and so, it always boils down to the same thing, no single member would be worth a hoot 'round here if it weren't for all the rest of 'em :D

gary: you seem to be having a good time. this place has a lot to offer, you're finding it, and i'm diggin' that :cool:
__________________
"....Get a bicycle. You will not regret it. If you live." - Mark Twain - May 10, 1884
 
thats cool

just joined the site that's a cool project you got ahead of you. i built a 80cc 24" moutain bike. can you tell me where you get the NOS bottle and the setup for it.

thanks




Hi,

I want to install a chinese 70 cc in my OCC Schwinn chopper lookalike

This forum has made this project possible. My goal is to build an example of the state of the art using the best components from the best suppliers (barrys mount is the prime example I could have easily ended up with the "bent plate" version which cracks but you guys steered me away from that one)

I want to really "chopperize" my bike so I'm looking for a black padded WIDE saddle with springs (a'la vintage Fatboy) and handlebars with some sweep-back. I am also probably going to get the extended exhaust from Barry and some leather saddlebags (no fringes that would be going too far).

I have already purchased:
Hub adapter from Livefastmotors. (Ebay) This is the only place I could find one.
Engine mount from "Barry" (Ebay) Thanks again guys for steering me to this guy!!
A 36t sprocket from "Dacscom" The choppers small diameter rear wheel makes this a must-have.

Here in BC I can't use this bike unless I:

Get it weighed at a government weigh scale, Apply for a VIN number, Have the VIN plate sent to an approved inspection shop, Have it inspected and then they'll attach the VIN, Go to an Autoplan dealer and they will issue a registration. Then I can have it insured.

It has to have:
Head and tail lights, Brake light, Licence plate illuminator, Horn (and mirrors).

I am an electronics manufacturing technician so watch for my custom electrical system using NiMh batteries (RC) and a trickle charger powered from the magnito! If it works well I will post complete details. Since I need to power a complete lighting array (Head,Tail,Brake,Turn,Licence illuminator as well as a horn) It should be powerful enough for anybody elses requirements.

Other things I plan to do:
A really good front brake...Disk??
Boost bottle. (So cool, so simple so cheap)
Baffle material in muffler AND cut tube slightly for back pressure reduction. Yes I know I am kind of fighting myself on this one but my unproven theory is that if I reduce back pressure I can then afford some losses to reduce the sound level (I'll keep you posted).
Rubber sound dampeners in the engine cooling fins.
Sound absorbing material on both engine coverplates.

For chain noise I'll throw away the supplied chain tensioner and replace it with one that's spring loaded....one that never needs adjustment or maintenance.
I was advised to replace the chain with a KMC 415H or better still KMC K910 Kool Chain(Extreme Freestyle).

Chain issues:
http://motoredbikes.com/showthread.php?t=3880&highlight=chain+noise

Barry:
http://motoredbikes.com/showpost.php?p=91759&postcount=13

Chopper parts:
http://motoredbikes.com/showpost.php?p=58468&postcount=2

Intake gaskets
http://motoredbikes.com/showpost.php?p=68989&postcount=5

Engine prep.
http://motoredbikes.com/showpost.php?p=90431&postcount=11

Subjects I still need to research:

O-ring the carb. (CHECK)
Stainless steel clutch cable wire insert.
Seal the air filter.
Deburring the ports.
I want to do a really good job so I am overjoyed that I have found this forum!!

Thanks all,

Gary
 
I just piced up a slightly used OCC chopper bike for $25!!! I couldnt believe it! The guy said he got it for his son and he only used it for a week! I plan on that being my next build. I will be reading your every word and look forward to seeing how yours comes out : )
 
Sudden changes.....

Hi all...

Sorry I disappeared for so long but we moved and getting the Internet back, repairing my computer and legal issues with the chopper have had me spinning.:sick:

As I explained before I SHOULD be able to register, license and insure it under British Columbia law but any time I ask someone at an inspection station they tell me that they would be very surprised if I managed it. Their opinion is that the "powers that be" don't like the idea of bicycles with aftermarket motors which could come flying out of the frame at speed if you hit a bump. I am sure I could secure it but convincing the gov't would be a miracle. If I were to DEMAND my right to build it and have it inspected they would simply say "Ok no problem....Just have an engineer sign off on it...."

I could never afford that.

So the upshot of it all is I am going electric. I will start a new thread for this new project.

Gary.

P.S. I gotta WHOMPIN' STOMPIN' motor......:devilish:
 
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