Changing to rigid fork on C-dale Killer V 900 w 1.5 I have a 90s era Cannondale Killer V 900.,  Believe it has the Headshock fork with the shock directly below the headset.

I am converting the bike to an electric commuter (please dont hate me or just dont send me hate mail).  I have a few other bikes - just dont like to get to work sweaty. 

The ebike motor kicks out so much torque the recommend a steel fork.  I am a noob on bike maintenance and its tough to tell much info on the boards. 

Anyone have a recommnedation for me.  Based on what I have gathered  I can get a 1.5 to 1 1/8 conversion piece and get a steel fork. 

Can someone confirm this?  Also not sure on if I get threadless or threaded and if any differences exist in lengths? (i.e. do I need some spacers or something else.)  Someone also mentioned that it might look goofy going from a 1.5 thick headset to a skinny fork - - oh well.  

Anythoughts much appreciated - - as indicated I dont know much so any specific detail or product link is awesome. 

Love this sight.

Thx
Tom
tom_mccarthy@me.com
Yes, you can use a 1 1/8" fork with a 1 1/2" frame. I did it on one of my bikes. You just have to get a special "reducer" headset. It doesn't look goofy at all - you can't even tell unless you look closely.

You'll have to get a threadless fork. Nobody makes reducer headsets for threaded forks.

Most new forks come with an un-cut steering tube - that means it's a few inches longer than most people need, and you have to cut it to the right length.

Make sure that the crown-to-axle distance is approximately the same as your old fork. If not, it'll change the bike's handling characteristics, maybe drastically.