18 May 2013

making handle and pedals and adding spoke for front fender

My idea of the handle for my replica after python is bad idea.
I noticed that it was broken by falling down.
I have to know original one's potencial.
The tube is cutted from the handle is used as parts of seat back.
The one circle egde change to oval.
 These are not looked oval form.. but the shorter length is near seat rectangular's height.
 The width of seat is 150 mm. to weld well, I cut and bended the oval edge to fit more to the rectangular.
 I used wooden boad to get 90 degrees angle and flat.
 The rectangular has already had holes for screw to attach seat board. It's needed to weld not to cover the hole.
 Like this, but more space is needed for washer. My welding technique is not good yet.
 New handles were welded.
I'm waiting simple brake levers without shift lever.

My legs are shorter for 26 inch python. I can use shorter crank. but such crank is for kids. it doesn't 3 gears.
I read that It isn't easy to ride on uphill slope with the python. So I thought 3 front gear of MTB should be tried.
So If the length of crank is changed, they are cutted and welded.
I got an idea. If thicker pedal is used, It can help my shorter legs.
 The red one is original one made in Taiwan, the brand name is welgo. It's made from Aluminum.
 I bought aluminum plate which the thickness 3 mm to get hardness.
 Cutted edges.
 drilling holes. 4 holes of those are for screw. the other is for light weight. I guess it's hard to bend aluminum plate. maybe I need heating and bending on same time.
Aluminum is soldered at about 500-600 degrees. The material doesn't have color change of temperature. How can I bend it ?

I added spoke for fender of front.
Stable fender is better.

Fine.