Removing spider and chain ring form bike crank.

Becaue I have bent several cheap aluminum unicycle cranks,
I have decided to use quality bike cranks. Moreover, It is cheap
sometimes and can be bought as a second hand material.

I have tried shimano deore crank first. It is relatively cheap.
It was about 40 US dollars. But my friend sold chain rings for
me to bike users, so I can buy it about 25 US dollars. :smiley:

I have sawed out spider. And final appreances are here .

I have a plan to use it for next low weight 24" muni. I need
lighter one, Because I think current KH "24 is somewhat

Any comments? Let me hear your opinions. Thanks.