Front Disc Brake Cruiser

I have a CH80 on a cruiser bicycle with a Bendix (coaster) rear brake only. Well that crapped out on me today, so Ive started considering brakes. I have a mountain bike that I dont ride anymore and it not only is a quick release with a nice hub, it has a disc rotor. So now im thinking that im going to weld up a mount for the caliper and put my front disc brake setup on there. Is this do-able? Is there a reason that I shouldn't use that wheel? The rotor barely clears the fork, and I noticed that the dropouts are much thinner on my cruiser fork than on my mountain bike fork, but it tightens down alright... Any thoughts?

I really want to put a suspension fork on my cruiser. Anyone done it?

I was thinking like a mountain bike fork for a threaded headset. Would a mountain bike fork place the front wheel in a difference place than a cruiser fork and interfere with the frame dowtube? I just want to dampen the pothole jolts. A pothole is quite another thing at 40mph with a rigid fork...

Couldnt get your link to work velardejose. Anything else you can tell me about the disc brake, quick release problem?

I understand the idea of the wheel being pushed by the brake. Does this actually ever happen to the point of creating a problem? Its not going to eject my wheel is it?