changed sponge of the seat

I had used hard sponge for the bath. It's too hard.
I changed it to softer one.

The thickness is about 30 mm. I can turn smoothly.
It has many flowers on the surface.

Need more force

Yesterday, I made steering pivot construction again.
This time, I found the frames of the seat was extended.
To find better seat position easily, the middle stay was taken off. So around the middle of the frames supported my weight without middle stays.
They need more force.

I'm sorry I forgot photos.

After repairing. We can see a hole, and I welded thin iron sheet at the neighbor of it. Then the extended oval hole was welded with the thin iron sheet.
We can't see the extended oval hole now.



The frames are back on the seat.



Now I'm thinking how I can bore the sponge of the seat.

Fini.

Changing construction of steering

M12 bolt made from mild steel is weaker as axle of steering pivot.
After riding for 20 km, it is bent a little. That was repeated still riding to 1000 km.
So I had to improve the problem.



The axle bolt on above photo is one After riding for 400km.



Then I use rod end and bolt used with milling machine. MIG welding was used in this time. It's easier than arc rod welding.
We can see this way on :Steering pivot : open bike wiki.



This operation was completed a day. MIG welding is speedy !

Then today's my riding.

Fini.

Almost 1000km, the second python is ridden

Today, too I rode my second python. I has ridden for about 1000 km.

But, the pivot axle has problem. I use the construction of steering pivot based on flevo. I use M12 axle. It's weak. I have changed it after I rode for 600 km.
Two weeks later, I will ride it for 90 km a day. It's danger, the axle may break.

So I have to make believable pivot as soon as possible.
Some hints are on open bike wiki and python project survey.

I will do tomorrow. I have already designed new one.

Fini

Practice of turning

I have kept training to ride my python.
Especially riding on the python, short steering isn't easy.

So I need training to brush the skill
My technique is so so.

Fini.

Making stays to attach computer for bike

I bought new indicator for bike.
This time I chose one to calculate cadence. To attach it, I made stays.





I have trained riding python. For these weeks, I train pedaling with one leg. Then now I can pedal with 50km/h.
In this month, I appreciate the event of bike. The distance to ride is 90 km around a lake.
So I need more data to ride for long distance.
I already rode 820km with my second python.

Fini

Making reflector

I broke two reflectors. They are made from plastic. It's easy to brake.
So I made a reflector from iron sheet by myself.



I learned the way to bend iron sheet when I built my second python.
It's fun to make something by myself.