Freestyle the lightest flywheel ever!

[D-Roc]

how much does it weigh now that it is cut. some one had some software to test flywheel dynamic forces or something. i wonder what the simulator would tell about what you did. it looks nuts. i am glad you did it though. if your 2nd guessing the durability which pretty much everyone has, put it on a 650 motor and try to pull some high rpms. i am sure someone can even donote a 6m6 motor for the cause.

 

[Waternut]

A program I used back in college called ANSYS could tell you the forces on the flywheel but I don't have access to that anymore or any other software that can simulate dynamic loading. Maybe someone with the tools and know how can pump out a model pretty quickly...

 

[eeerieski]

I could pump out a simulation but I bet you wouldn't like it much. I might have to learn a bit about dynamic loads applied to an object. I have a computer locked at school right now running an ansys simulation dealing with sheet metal forming. 2.83ghz dual core and it had been running for 4 hours before I left it for the night.

I would have cut the reliefs to like more like triangles and tried to thin out the rim of the flywheel, triangles like these:

 

[freestyle 650]

Im not sure what the flywheel weighed before but now it weighs 1lb 5.9oz

 

[munki63]

have you run it yet?

 

[Waternut]

I want to say the SJ flywheel was a little under 2 lbs. The kawi 750/800 flywheel weighs 1 lb 11.7 oz (just weighed it because I had one laying around). I can't remember which was lighter normally though because they are slightly different weights.

 

[Matt_E]

The Yamaha MSD Flywheel is spec'ed at 1.75lbs, or 1lb 12 oz

 

[freestyle 650]

update: have been testing this flywheel on a ski for about 5 tanks of gas now and it works great.I installed it with a cover that I cut to expose the flywheel so I can keep an eye out for any cracks.It is running on a freestyle/rec ski so it doesnt see many high rpm runs but does see alot of jumping/sudden loading of the pump situations.IT does idle a little rougher than a stock flywheel and the idle had to be turned up a tad to compensate for the lack of rotating mass,but so far so good

 

[munki63]

Thats Awesome! when are you going to start production lol j/k

 

[Freakrider]

Now you need to cut the cases so you can keep an eye out on the crank bearings...:clown:

Well how did that super light flywheel spool up, did you notice a gain ?

 

[tor*p*do]

did you ever run it?

 

[Jake6488]

Read post #28

 

[tor*p*do]

doh!