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Farmall & IHC Tractors Discussion Forum
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OT - Cement Mixer

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Dave in CT

10-04-2005 17:08:58




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I picked up a cement mixer at an auction ($10!). It's one of those old beauts with a cast bottom, ring and drive gears and it's not stuck. It's got a spoked cast pulley 16" in diameter with about a 3" wide flat rim. Was this to be driven by a belt from a tractor? I don't have much experience with belt-driven devices but the buzz-saws I've seen have 6" or wider pulleys. This more narrow pulley has thrown me off. The drive shaft the pulley is mounted on is 1.25" in diameter and, if possible, I'd like to drive it with the PTO on my H. I'm imagining a drive shaft coming from the PTO with two universal joints to the drive shaft of the mixer. Does this make sense or am I way off? Anyone done this or should I try to stick with belt-driving it?

The tag on the mixer says 22 RPM. The pulley drives 8.25 turns per 1 revolution of the drum so I'm looking at 181.5 RPM on the drive shaft. I'm imagining running the PTO at a little above idle.

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scotty

10-05-2005 06:38:43




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 Re: OT - Cement Mixer in reply to Dave in CT, 10-04-2005 17:08:58  
Gee Dave, For the price you paid, cant see how you could go wrong! Its sounds to me like youve got the RPM issue all figured out. Id say just be carefull with your drive shaft arrangement, guards etc to protect you and others. If its really old could have been driven by a hit and miss engine with the narrower belt, just a thought. Anyway good luck with it!

scotty



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Dave in CT

10-05-2005 07:01:25




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 Re: OT - Cement Mixer in reply to scotty, 10-05-2005 06:38:43  
Well, I knew it was old but I didn't think it was _that_ old. Makes sense. Could I drive it with the belt pulley off my H just using a more narrow belt? Or will I have problems with the belt wandering off?



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scotty

10-05-2005 09:28:17




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 Re: OT - Cement Mixer in reply to Dave in CT, 10-05-2005 07:01:25  
Hi Dave, I would think you could drive it off the belt pulley, but of course belt pulley RPM is much higher than PTO RPM. as far as the belt goes, long as the pulley is crowned I would think it would work. I liked your driveshaft idea better myself. I have an old belt pulley off of my Super A that has a piece missing, your welcome to it if you want it. Im in Seymour, dont know how far that is from you! I realize that pulley wont work on your H but if you need it for the mixer you can have it. I bought a replacement a couple of years ago.

scotty

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Janicholson

10-05-2005 09:40:05




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 Re: OT - Cement Mixer in reply to scotty, 10-05-2005 09:28:17  
I think the Single cyl low speed gas engine was used, however there were speed reduced single air cooled units with flat belt outputs.
Using the belt pully drive with a small diameter pulley (about 3") might be less effort to make and set up to run. It would also provide a measure of safety in the sense that a locked up drum on the mixer (for what ever reason I can imagine but shudder when I do) turns the whole mixer into a disaster. The belt would slip and or the mixer would move toward the tractor, jumping the belt.
The pulley dimensions can be found in an old Machinery's Handbook.
Good luck with your find. We have one being powered by an electric motor with a gear reduction and vbelt used over the flat driven pulley.
JimN

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Dave in CT

10-05-2005 17:19:54




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 Re: OT - Cement Mixer in reply to Janicholson, 10-05-2005 09:40:05  
You're using a V belt just running on top of a flat pulley like mine? This intrigues me. I tend to think the tractor (only one) might be needed to do other things as we mix so a seperate engine setup is also a possibility. What's the ratio on the gear reduction unit?



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