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Old 03-03-18, 10:57 PM   #1
Chewzacca
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Default Converting Hand crank to Belt Driven

Hi,
I have a Bentalls corn mill that i will be looking to convert from Hand crank to Belt driven, i have a Petter A1 (1.5 @ 750RPM) to go on it or a 3hp 1500RPM A1VO, I'm assuming because its hand crank it'd be best suited to the slower running engine.. Anyway does anyone know if i could just replace it will the right size pulley and belt ratio or would i need a reduction gearbox to slow it down as realistically you probably wouldn't get more than 50-60 cranks out of it in a minute by hand?
Thanks,Zac

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Old 04-03-18, 06:24 PM   #2
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https://www.blocklayer.com/pulley-belt.aspx
Hope this helps
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Old 04-03-18, 07:18 PM   #3
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Thank you thats really helpful should help me understand :)
Zac
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Old 05-03-18, 01:14 PM   #4
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I think I'd keep the lovely flywheel and put a small vee pulley on the other end of the shaft, together with a suitable reduction gearbox, with the aim of going for about 30 rpm on the shaft.

Phillip
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Old 05-03-18, 06:19 PM   #5
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I think I'd keep the lovely flywheel and put a small vee pulley on the other end of the shaft, together with a suitable reduction gearbox, with the aim of going for about 30 rpm on the shaft.

Phillip
Thats the plan i was thinking off really. I saw one that did similar and looked better. I'm all for keeping the flywheel as it has a nice pattern on. Only thing that put me off on the other one was the way the flywheel was sticking off the shaft.
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Old 05-03-18, 06:56 PM   #6
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Can you not run a narrow flat belt on the flywheel?
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Old 05-03-18, 07:21 PM   #7
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Quote:
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Can you not run a narrow flat belt on the flywheel?
I will give it a go and see, would it not slip off where theres quite a small surface area?
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Old 05-03-18, 07:54 PM   #8
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Not if it's lined up right, if you was really worried then mount it on a trolley with a line shaft so it's fixed in place and have a wider pulley on the line shaft.
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Old 05-03-18, 08:55 PM   #9
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Quote:
Originally Posted by Appletop View Post
Not if it's lined up right, if you was really worried then mount it on a trolley with a line shaft so it's fixed in place and have a wider pulley on the line shaft.
That's what I intend to do with mine if and when I actually get around to finishing it! Have virtually all of the parts, just missing the vital 'get up and go' one!

Pete.
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Old 05-03-18, 09:19 PM   #10
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Thank you for the help, i think that'll be my best bet as i intended on a trolley to move it anyway.
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