Stuck Sprocket/front gear?

[blackdiamond]

I have an old murray 10-speed that i am turning into a bike parking rack for a school project.
The front sprocket is rusted so much it wont move and i cant get it out of the bottom bracket.

Any Ideas :?: :?: :?:

 

[scrumblero]

heat that sucker up good and hot and douche it with penetrating oil, it will start moving... :roll:

 

[deorman]

You are aware that the left side of the crank is left-handed threads? :?

 

[blackdiamond]

yes

 

[Unchained]

What part exactly is it that is stuck?

If it is the lock nut on the non drive side, a long handled adjustable wrench and some force has never failed me. I hold the crank in place with my foot or leg and give the cone all I have - again, hasn't failed me yet. You might want to wear some gloves though... slipping off has busted a few of my knuckles up! :mrgreen: Once that comes off, the cone is a breeze. I have never had one of those stuck, ever. If the crank as you say truly doesn't move at all: if you don't care to save it, and you need it to move, brute force + sludge hammer against the crank arms should break it free.

Pictures would be worth a thousand words...