Making gears from 1144 stress proof steel

[brian Rupnow]

I have some 1144 stress proof steel left over from the Jaguar crankshaft. I need to make a pair of 24 DP gears to be the cam gears on my new side valve engine. Will there be any problems if I use the 1144 stress proof to make the gears from? Doesn't seem to me that there should be, but its always cheaper to ask first.-----Brian
__________________

[Old Hat]

Close to the skin you'll have some gear friendly steel.
Once you move toward center it'll soften up a tad,
but still be far better than any mild steel.

•Improved wearability without case hardening
•Strength without heat treating
•Exceptional surface quality
•Excellent machinability
•Extended tool life
•Resistance to fatigue and stress
•Balanced working
•Minimized warpage and distortion
•Controlled low stresses

[MrSleepy]

•Improved wearability without case hardening
•Strength without heat treating
•Exceptional surface quality
•Excellent machinability
•Extended tool life
•Resistance to fatigue and stress
•Balanced working
•Minimized warpage and distortion
•Controlled low stresses

You can get the full specs (as above) from
http://www.niagaralasalle.com/product-stressproof.html

Rob

[brian Rupnow]

So here we have a pair of gears being born!! I had a 7" length of 1144 stress proof steel x 1 3/8" diameter left over from making the crankshaft for the Jaguar/Canadian Cub, and the o.d. of the timing gears for my side valve engine is 1.33 major diameter. I cut the 7" length in half, turned the short end to 5/8" diameter, turned the o.d. to 1.33" diameter, and drilled and reamed the 3/8" bore 2" deep all in one set-up. I then reversed the part in the 3 jaw chuck and turned the other end to 5/8" diameter. Next step will be to set it up in the chuck on my rotary table and make one long gear, then saw it in half in the bandsaw and turn the face of each remaining gear half to the correct length, then cut off the long hub to leave a .343 long hub. Then I will add the set screw holes.