Puch Bobber

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Puch Bobber

Postby dracothered » Thu Oct 24, 2013 9:59 pm

Hello, I would like to introduce myself and also show you my Puch project.

I'm from Michigan and have owned several types of vehicles including a mini bike, motorcycle, baja bug and a Jeep CJ5 plus several types of cars and trucks. Built or repaired much of what I owned. So when I got interested in motorized bikes it lead me to mopeds.

So I thought I would take one like this...
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and build it into one that looks like this...
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My build will have these items in it...
Murray frame (Yea I know it isn't a real Puch frame)
EBR magnum forks
Schwinn Sting Ray handlebars
Batavus tank
18" front wheel
16" rear wheel
Puch E50 engine 50cc single speed.
15mm SHA carb

A quick moc up...
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Top tube welded in...
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Front tank mount point also welded on...
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Just needs the rear tank stud welded on...
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Then I need to stretch the rear swing arm.
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re: Puch Bobber

Postby RebelRider.Mike » Fri Oct 25, 2013 2:11 am

Neat project!
I'm looking forward to seeing more progress.
Mike

1979 Puch Free Spirit
1987 Honda Rebel
2014 Ural M70
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re: Puch Bobber

Postby dracothered » Fri Oct 25, 2013 7:46 pm

So at what angle will the shocks not work like they are suppose to?

Here is a virtual mock up at the angle the would sit with the swing arm stretched like I need it to be.
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re: Puch Bobber

Postby dracothered » Sat Oct 26, 2013 5:36 pm

I cut up two Murray swing arms and stretched the one.

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The rods are to line up the pieces and to add strength at the joint.

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Added about 3 1/2 inches to the swing arm.

One side all welded up.
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re: Puch Bobber

Postby dracothered » Sat Oct 26, 2013 9:42 pm

Well after doing some reading and after a test assembly with the rear wheel on the swing arm I have come to the conclusion that it is becoming a hard tail with a sprung seat. :mrgreen:

The shocks that are there now will be going bye bye, to be replace by a seat stay.
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re: Puch Bobber

Postby dracothered » Sun Oct 27, 2013 5:46 pm

A hard tail it is now, which takes care of many a worries over the shocks and if they will work right or not. Still need to weld the other side on.
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Try to guess what I used to make the seat stay out of... :mrgreen:
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re: Puch Bobber

Postby RebelRider.Mike » Sun Oct 27, 2013 10:50 pm

Looking good! I gotta learn to weld someday!

I like the idea of adding a cross bar. Tanks for my Free Spirit are small, and hard to find. It would be neat to have a bigger tank.

I would guess (and this is from complete ignorance) that going with a hard tail is better that shocks at that angle. The only other option I could see is maybe moving the mount points on the swing arm closer to the front to reduce the angle. But that is also a half-baked idea based on more ignorance.

I imagine a seat with stiff springs, and maybe oversize tires would compensate for lack of rear shocks. I'm planning to put 3.00 - 17 tires on mine.
Mike

1979 Puch Free Spirit
1987 Honda Rebel
2014 Ural M70
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Re: re: Puch Bobber

Postby dracothered » Sun Oct 27, 2013 11:21 pm

RebelRider.Mike wrote:Looking good! I gotta learn to weld someday!

I like the idea of adding a cross bar. Tanks for my Free Spirit are small, and hard to find. It would be neat to have a bigger tank.

I would guess (and this is from complete ignorance) that going with a hard tail is better that shocks at that angle. The only other option I could see is maybe moving the mount points on the swing arm closer to the front to reduce the angle. But that is also a half-baked idea based on more ignorance.

I imagine a seat with stiff springs, and maybe oversize tires would compensate for lack of rear shocks. I'm planning to put 3.00 - 17 tires on mine.


If you move the shocks further forward on the swing arm you run into other issues that are not good also. You change how the shocks act just like they change when ran at a stepper angle. I will be running 3.00 x 16 rear wheel and a 2.25 x 18 front. Also I will have a sprung seat, maybe sprung both front and back.
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re: Puch Bobber

Postby dracothered » Wed Oct 30, 2013 12:54 am

Mock up of seat position...

Image
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re: Puch Bobber

Postby dracothered » Fri Nov 01, 2013 2:25 am

The front seat mount is made, now I have to wait for the rear seat coil over shock to come in so I can mount it.

Here is two different tail light positions that I am considering, of course neither is in the exact position that they would be mounted. I also have a couple small tail lights coming that I want to mount just above the rear axle on both sides.
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re: Puch Bobber

Postby dracothered » Sat Nov 02, 2013 8:20 pm

Here is a full profile view of her.
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The handling should be good with a 3" trail on the front fork rake.

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re: Puch Bobber

Postby dracothered » Tue Nov 05, 2013 8:19 am

To be honest the more I looked at the top tube alignment the more it bugged me so I moved the back of the top tube.

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re: Puch Bobber

Postby RebelRider.Mike » Tue Nov 05, 2013 10:31 pm

Looking good!

The more I see your project, the more I want to add a top tube to mine.
Free Spirit gas tanks are hard to come by!
Mike

1979 Puch Free Spirit
1987 Honda Rebel
2014 Ural M70
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re: Puch Bobber

Postby dracothered » Fri Nov 08, 2013 1:25 pm

Here is what the tire will look when it gets mounted.
Image
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re: Puch Bobber

Postby dracothered » Thu Nov 14, 2013 9:53 pm

All fab'd and welded, just need to cut down the pivot pin in the front and either thread the one end or drill it for a cotter pin.

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