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Discussion Starter #21
what rocker weight do you work to and how do you distribute it calculation wise for balance?
That's a good question !!!!

Very difficult to have good information
Some say to go on 108% of the piston before, other 70% ....
 

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Discussion Starter #23
Off course, I design the rocker according to that
 

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Discussion Starter #25
This engine is just for fun and it's more fun to make a rocker (from my point of view) :giggle:

The last rocket Design :
975523


Weight : 360gr
Weight at mid stroke on the rod axle withe pin : between 350.5gr (solid pin) and 270gr (drilled pin), not so bad

And I can still lighten the rocker if needed
 

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Discussion Starter #26
Work in progress :
Rocker case at home !

 

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Wow! So much time and money to make a slower bike ! A Ducati version of a Buell Blast.
 

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Discussion Starter #29
Thanks @highflyer

Impossible to see the yahoogroups discution, I'm a member of the group however

I will start a discussion by email
 

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Discussion Starter #30
Some news :







And a video :

 

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Looks good, Samuel.(y)

Managed to find some time to debug my code.
Below are some graphs from testing it with 1m long rocker, and moment of inertia equivalent to (piston + upper rod) mass, at the 1m radius.
The forces are what the main bearings experience.
If you want to see how your set-up behaves, send me the measurements of your upper con-rod and complete piston masses along with the moment of inertia of the rocker from the CAD drawing.

Regards

Angelo
979621
979622
 
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