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  #11  
Old 06-26-2016, 09:04 AM
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Ludwig II Ludwig II is offline
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Default Re: New Project

I suggest going to a vintage bicycle restorer as they will be used to many variations on the bicycle theme and understand the requirements of the job.

http://www.classicrendezvous.com/Resources.htm
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  #12  
Old 06-27-2016, 06:30 PM
Mike Stroz Mike Stroz is offline
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Default Re: New Project



Just got a few more pieces of the bike together. I think the fenders came off a JC Higgins bike from the 40's that I cut down to a point. The fork came off a Motobecane 40t (I think) and the wheel hubs I have no idea about, but the rear is an Atom and the front says Brevette. The handlebars are off an old Raleigh, but I might put on the stock Motobecane high rise bars instead.



I also got a cheap center stand and realized that one of the pdeals is bent and hits it while the other doesn't... Should be pretty fun even just as a regular bike! I'm thinking I definitely need a layback seatpost though. And I still need to source a tank.
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  #13  
Old 06-27-2016, 07:13 PM
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Tony01 Tony01 is offline
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Default Re: New Project

Cool project. Yeah that splined shaft might be a problem. Talk to MSRfan he's the master builder of 5hp flathead bikes. A pz19 carb is going to be too small for the 5hp. In fact I'm putting a pz19 on my 3.5hp Briggs. You will probably have to make your own intake. There is a guy on here that uses a 28mm carb on his 5hp raptor, I think a 22mm carb would be a good size for a mild 5hp build and you could always upgrade later if you do any more to it.
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MxTrq clutch tuning | msrfan 2spd | 212cc 2spd | 3.5hp 2spd | Thud 2spd | CVT tuning
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  #14  
Old 06-27-2016, 07:35 PM
Mike Stroz Mike Stroz is offline
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Default Re: New Project

I have been talking to him, I kind of "copied" his ideas for mine, but mine's gonna be a different style. I ordered a chinese 22mm Keihin carb for the motor. Always a gamble when you order a chinese knockoff, but I've had some good luck with them. So far... I should be picking up another briggs 5 horse this Wednesday, and if it doesn't have the mounting holes for the torque converter, I'll just throw on the gear reduction side cover that does have the right holes
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  #15  
Old 06-28-2016, 04:58 PM
Mike Stroz Mike Stroz is offline
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Default Re: New Project

Just straightened the crank reasonably well in the vise, cleaned out the old bearings and greased em up along with the hubs and fork. Called around to a few bike shops today but still no dice on the wheels
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  #16  
Old 06-28-2016, 05:22 PM
curtisfox curtisfox is offline
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Default Re: New Project

Maybe you could talk to one of the guys that do the lacing, and maybe they could do it at home for you?.......Just a thought..........Curt
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  #17  
Old 06-28-2016, 06:13 PM
ajoh ajoh is offline
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Default Re: New Project

follow this video an build your own wheels.........

https://www.youtube.com/watch?v=caCl...wrIt4d&index=2
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  #18  
Old 06-29-2016, 11:37 AM
Mike Stroz Mike Stroz is offline
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Default Re: New Project

I tried building wheels before, but it didn't work too well... Maybe someone on here would be able to build a set of wheels for me?
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  #19  
Old 06-29-2016, 06:29 PM
ajoh ajoh is offline
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Default Re: New Project

Quote:
Originally Posted by Mike Stroz View Post
I tried building wheels before, but it didn't work too well... Maybe someone on here would be able to build a set of wheels for me?
just follow the video pause it, rewind it, play it again an again it's extremely easy to follow an you wont know until you try

i did it never having built a wheel ever before an i've done 3 more since.............
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  #20  
Old 06-29-2016, 10:04 PM
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Tony01 Tony01 is offline
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Default Re: New Project

JUST DO IT!! I can do it, all the ppl in this thread can do it, and soon you will too.

First thing you need is spoke length and gauge. I've never seen an Atom hub up close but they're likely made for thicker spokes. You can buy cheap thick spokes from husky bicycles. Also you can get Sapim 13g stainless spokes which are very strong and use washers with them, but might as well go with 12 or 11g right away. To find the right length you'll need to accurately measure the hub Spoke Hole Circle Diameter/Bolt Circle Diameter center to center of the holes, and the flange separation center to center. Try to get this within 1mm or less- best to get it as accurate as possible. Then you'll need the Effective Rim Diameter or ERD and this is the diameter of the rim where the nipples seat. You can easily just measure the inside diameter of the rim and add the thickness of the rims or spoke hole eyelets or whatever will make it bigger (times 2, for both sides). Find a free spoke calculator online; I've used the one on the DTSwiss website and also some other one on another site. Input the Flange Separation, BCD, ERD, and 3-cross, put nipple length as whatever the supplier says they come with (usually 12 or 16mm) and you'll usually get a number like 270mm for regular MTB rims and hubs down to around 220mm or so for very large bicycle drum hubs. My rear hub has a 70mm drum brake and came out to 240mm spokes for 26" wheel with 48 spokes. Usually it falls between two sizes and if you go with the shorter size you might need longer nipples (i.e. 16mm vs standard 12mm) or if you go with longer you might need to grind the spokes off with a grinder after lacing and truing the wheel to prevent getting a hole in your tube.

BEST TIP: for standard 3 cross lacing which is 95% of what you'll do with bicycles just remember this for every spoke crossing: OVER, OVER, UNDER for external spokes or UNDER, UNDER, OVER for internal spokes. You wanna do the internal ones first cause it gets messy trying to get an internal spoke in the right spot when all the other spokes are there. Also when you are near the valve hole, make sure the spokes near it are parallel to make putting air in easier. Also it doesn't matter if you have internal or external spokes leading. I've done it both ways and haven't found a difference. I just did it whatever way I started it.

Also you can tune them by ear:
http://sheldonbrown.com/spoke-pitch.html

I've built maybe 25-30 wheels by now and trued up many more.. the first couple were the hardest.. heck one time my chain jumped and ate all the drive side spokes. Well I got some similar sized spokes from another wheel but they were too long. took hub and spoke length measurements and put them in a spoke calc, and found that 4-cross would work (more crosses require longer spokes.. 0 crosses is radial lacing..) so I ended up lacing the drive side 4 cross and my buddy still has the wheel with the rag joint on it no problems. Sure saved my butt that one time. I think the difference was only 8mm or so.
__________________
I don't always listen to Alice in Chains..... but when I do, SO DO THE NEIGHBORS
MxTrq clutch tuning | msrfan 2spd | 212cc 2spd | 3.5hp 2spd | Thud 2spd | CVT tuning

Last edited by Tony01; 06-29-2016 at 10:07 PM.
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