Thanks Randy for the link and information, it's very helpful.
Printable View
Thanks Randy for the link and information, it's very helpful.
It's been slow going but my 2x72 build is coming along. I figured out how to get it to track properly and got from a co-worker a gas strut when he replaced the ones on his hatchback to use for the tension and tracking. Next up will be to mount the motor which came from a treadmill.
Attachment 168026
I had a treadmill motor on mine, for awhile. Never could figure out what parts controlled the speed, so I just mounted the whole works. Looked weird, but worked like a champ until the motor died. Now I've got a 3hp 3 phase, and a phase converter.http://straightrazorpalace.com/images/attach/jpg.gif
I'm so glad I stumbled upon this post. I've been looking for a custom hand made pairing knife for my wife for her birthday in a few months. Do you have an online shop?
Thank you for your interest. I just sent you a personal message.
Skipnord, when you were running the treadmill motor what size hp motor was it and what did you use for a pulley? I tested mine out last night, it's tracking well but gets easily bogged down. I used the pulley that was on the motor for the treadmill and ground down a groove using a file. It didn't seem to matter whether it was running at half or full speed using a 120 grit belt. From the picture it's hard to read the specs, it's a 1.75 hp 110 VAC 1305 WATTS.
I'm wondering if putting a pulley on the motor would help as I just filed down the pulley that was on there for the treadmill which is very small, or if I should start looking for an alternate source for motors.
I should mention I'm using an 8" contact wheel and a 4" drive wheel with a 3" pulley.
Attachment 168552Attachment 168553
It sounds like the belt is slipping on the motor pulley.
Just my 2¢
Thanks Randy. I figured it out when watching the video below. I noticed when at 2:10 he changes from the large lower wheel to the small lower and vice versa on the higher ones, thus slowing down the speed. That was exactly how mine was running so I cut a groove in the flywheel and made some changes above so it would run setup this way. Once I did this it began hogging metal.
Attachment 168598
https://www.youtube.com/watch?v=9OcbUTK5i5g
Good video. It sounds like you agree with Randy that your pulley was slipping. I put a regular pulley on my motor - about the same size as the driven pulley - and controlled the speed with the treadmill speed control. If you are just running the motor at one speed - hopefully its max, a set of 3 or 4 step pulleys will work to control your grinding speed. as I recall, my motor was a 2hp. Yours might be a tad weak - I'm using a 3hp now. Good luck with your project!