Treadle Lathe workbench #6: it spins.... and has a pedal...

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Blog entry by jth2bmtsu posted 04-07-2009 02:55 AM 3059 reads 0 times favorited 4 comments Add to Favorites Watch
« Part 5: lots of progress on frame today. Part 6 of Treadle Lathe workbench series Part 7: finally the workbench is recognizable.... »

Well since last post we attached massive reclaimed 2×6 supports to handle the axle. The axle (3/8” piping) is recieved by the floor flange on each side of the flywheel. The crank arm is then assembled as shown in the pics.

We then constructed a pedal from scrap 2×4’s and some plywood and secured it to the frame by metal piping to allow it to pivot freely.

After assembling the wheel/ crank and pedal system we got er spinning pretty good. Somewhere in the range of 2-3 revolutions per second. It also continues to spin fairly well when u discontinue cranking, the concrete seems to be working well. The whole system needs a little tweaking but all and all is functioning properly. The axle and crank definitely need to be welded to prevent any slipping which has already become apparent. If anyone has any advice on welding please share. I am by no means a metal worker. I want the simpliest method of joining galvanized steel piping where it will never come apart.

4 comments so far

View Chris's profile


339 posts in 3382 days

#1 posted 04-07-2009 04:15 AM

Is it balanced well? I mean, do you get much vibration when the flywheel is spinning?

-- Chris

View AndyR's profile


16 posts in 3362 days

#2 posted 04-07-2009 05:17 AM

Watch it if you weld that galvanized pipe! You don’t want to breathe the zinc fumes-very toxic. Soaking the parts in vinegar first will remove most of the galv., or at least make sure you do it with some wind taking the fumes away.

I wonder if JB weld would hold up with that kind of vibration? It’s pretty amazing stuff.


View jth2bmtsu's profile


11 posts in 3371 days

#3 posted 04-07-2009 04:36 PM

The flywheel is much better balanced than I would have expected planning this project. There is no vibration. The wheel has wobble side to side very little, maybe half inch off center at most which is certainly not enough to pull the belt off track. The only noticeable wheel issue is a loud squeak during part of the rotation. I think it will work its way out being we used “wood bearings in leu of ball bearings”. All in All I am pleased.

View Partridge's profile


296 posts in 3981 days

#4 posted 04-07-2009 06:39 PM

you could grease the bearing surface. as for pipes locktite and pins.

just my two cents. nice job

-- I get out in the shop when I can

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