The Making of a Full Circle Crank in a Homeshop

[bikemike]

Uscomposits.Com they will have any and all types of composite, resin, resin filler to lighten up the mass. Marine grade and aviation grade materials. I suggest checking them out

 

[awol]

Thanks for all of that valuable info Scott, It gives me a bunch more to think about.

The 5000 that this crank will go in is a only a gtg racer, and a couple small shows we attend. They normally run hot over the wood timed, or head to head elimination. I am not concerned about the weight of the crank at all, it's real easy to lose more weight from the rest of the rotating assembly than what was added by the full circle mod.

 

[jmssaws]

Weight doesn't bother me either,the clutch and flywheel can easily be lightened if your worried about weight.

 

[Moparmyway]

Weight doesn't bother me either,the clutch and flywheel can easily be lightened if your worried about weight.

Should'nt the flywheel be neutral balanced ?

 

[jmssaws]

Should'nt the flywheel be neutral balanced ?

I don't know what you mean kev?

 

[Moparmyway]

I don't know what you mean kev?

Ive heard some say that the flywheel is balanced to the assembly, and others say that it should be statically balanced (neutral) ......................

 

[jmssaws]

Ive heard some say that the flywheel is balanced to the assembly, and others say that it should be statically balanced (neutral) ......................

I gotcha,I believe they are neutral.

 

[awol]

Back to work...........

I put the crank under a center in the mill, and used spindle pressure to hold it down firmly and squarely onto the plate. Then just filled the voids with jb weld, being careful not to get any on the rod or bearings.



While I was mixing epoxy, I put the rings in place on J's 066 crank. They're a bit thicker than the other.

 

[jmssaws]

Weeeeeeeeee!

 

[Deets066]

Here we go!

 

[jmssaws]

Here we go!

Weeeeeeee!

 

[Deets066]

Weeeeeeee!

Lol, simmer down a little J.

 

[heimannm]

Let us know how it's going Alan.

 

[awol]

Oh, it's done, I just don't have enough data to upload pics!

 

[jmssaws]

Is mine done? The suspense is killing me

 

[czar800]

Great thread!! I've enjoy reading!!

 

[jmssaws]

Check it out @Red97.

 

[Red97]

Check it out @Red97.
View attachment 14957

Nice!! Me like

 

[Deets066]

Check it out @Red97.
View attachment 14957

Did you notice a difference J?

 

[Moparmyway]

Did you notice a difference J?

I certainly did, on all of them too !