The Thresher Plans PDF you uploaded are invaluable! So generous of you to share this freely to anyone interested in replicating your thresher. The winnower seems pretty straight forward (though will clearly take quite a bit of trial and error to tweak and get right), while the dehuller/grain mill seems quite a bit more complicated (for my current experience and skill set anyway). I will have to learn how to tack weld at the very least, and various other skills and distinctions will make a pretty steep learning curve for me to make them just based off your videos on the two different machines, particularly without any diagrams with measurements, etc. If they exist, is there any possibility that you might upload PDF plans either or both those two machines as well? Thank you so much for making such detailed videos and sharing the two PDFs. 🙏
Hello, the plans for ALL THE GRAIN BIKE MACHINES are available FREE thanks to a grant from SARE (so thank YOU for funding my passion). The links to the plans are above (between the video and the comments). When you land on the plans page you have to scroll down and click on the pdf link that says "plans final upload". Enjoy!
There are a LOT of different sort of surfaces you could experiment with - such as more "natural" ones (rather than rubber or sandpaper). How would force substitute or affect the action of various surfaces? For instance, turning the axis of rotation in the mill itself to the vertical would allow you to use weights instead of screws to put a *constant* force on the rotating plates. Too much force would smash the grain. The rubbing would "bring out" the grain of the wood and produce a rougher surface, and various orientations and types of grain (different woods) would affect the amount of shear on the kernels. But on second thought, the rubber may be necessary to prevent sharp stress concentrations between two hard (say, wood) surfaces from shattering some of the kernels.
Hi and thank you for your interest in the Grain Bikes project. Yes, there are lots of different materials for the two surfaces. One that could work well is just the steel disc roughened with a sand blaster, or given a little tooth some other way. Also, different grain crops beg for different amounts of "scouring" to de-hull; so there is a big difference between rice (primarily what we experimented with), barley, oats, einkorn, etc. I don't think changing the axis would be worth it for this machine--the cost of the gear and the transmission losses are great and the benefits of the changed orientation seem small. The pressure on the plates is controlled already by a combination of the adjustment screw and a rubber pad that backs one of the discs. Please let me know if you find otherwise. As for the welder, we used a mini-mig for this project. Because distortion is a nuisance for these aligned rotating parts, brass brazing with a torch would be a good fabrication strategy. The discs were faced on a metal lathe. Please follow the links to the construction plans-- they are not just blueprints but step-by-step recipes! I hope this is helpful, thanks again for watching!
You can buy all kinds of sets of sealed bearings from even our local home and building supply. I wonder why most things have crappy sleave bearings at most when it is so cheap to buy really decent bearings. Planned obsolescense, I guess.
lusolarone Haha. Guess that's what I miss listening while I work. I have a small, cheap grain mill on the way to retrofit for this purpose. Thanks for the pointer.
Ми їх не продаємо, і доставка їх буде дуже дорогою. Безкоштовні плани будівництва для вас або когось із тих, кого ви знаєте, щоб побудувати такий, наведені вище. Удачі!
The machine, as built, did not work well for oats. However, we did not have enough oats to experiment with, and I think it would be possible to change the size and material of the plates to do oats, barley, and other tough hulled grains. We made it work for rice and einkorn.
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The Thresher Plans PDF you uploaded are invaluable! So generous of you to share this freely to anyone interested in replicating your thresher. The winnower seems pretty straight forward (though will clearly take quite a bit of trial and error to tweak and get right), while the dehuller/grain mill seems quite a bit more complicated (for my current experience and skill set anyway). I will have to learn how to tack weld at the very least, and various other skills and distinctions will make a pretty steep learning curve for me to make them just based off your videos on the two different machines, particularly without any diagrams with measurements, etc. If they exist, is there any possibility that you might upload PDF plans either or both those two machines as well? Thank you so much for making such detailed videos and sharing the two PDFs. 🙏
Hello, the plans for ALL THE GRAIN BIKE MACHINES are available FREE thanks to a grant from SARE (so thank YOU for funding my passion). The links to the plans are above (between the video and the comments). When you land on the plans page you have to scroll down and click on the pdf link that says "plans final upload". Enjoy!
@@lusolarone2 Found them, THANK YOU!
You're my new hero 👍
Thanks for the info
Amazing, thanks for sharing!
There are a LOT of different sort of surfaces you could experiment with - such as more "natural" ones (rather than rubber or sandpaper). How would force substitute or affect the action of various surfaces? For instance, turning the axis of rotation in the mill itself to the vertical would allow you to use weights instead of screws to put a *constant* force on the rotating plates. Too much force would smash the grain. The rubbing would "bring out" the grain of the wood and produce a rougher surface, and various orientations and types of grain (different woods) would affect the amount of shear on the kernels.
But on second thought, the rubber may be necessary to prevent sharp stress concentrations between two hard (say, wood) surfaces from shattering some of the kernels.
Hi and thank you for your interest in the Grain Bikes project. Yes, there are lots of different materials for the two surfaces. One that could work well is just the steel disc roughened with a sand blaster, or given a little tooth some other way. Also, different grain crops beg for different amounts of "scouring" to de-hull; so there is a big difference between rice (primarily what we experimented with), barley, oats, einkorn, etc.
I don't think changing the axis would be worth it for this machine--the cost of the gear and the transmission losses are great and the benefits of the changed orientation seem small. The pressure on the plates is controlled already by a combination of the adjustment screw and a rubber pad that backs one of the discs. Please let me know if you find otherwise.
As for the welder, we used a mini-mig for this project. Because distortion is a nuisance for these aligned rotating parts, brass brazing with a torch would be a good fabrication strategy.
The discs were faced on a metal lathe.
Please follow the links to the construction plans-- they are not just blueprints but step-by-step recipes! I hope this is helpful, thanks again for watching!
What type of welding do you do? MIG/TIG? Also, lathe or mill boring?
You can buy all kinds of sets of sealed bearings from even our local home and building supply. I wonder why most things have crappy sleave bearings at most when it is so cheap to buy really decent bearings. Planned obsolescense, I guess.
Have you tried using a high durometer gum or other food grade rubber in place of sand paper?
One side (the runner) is sand paper; the other side (stator) is food grade rubber or silicone. If both sides are rubber it doesn't work as well.
lusolarone Haha. Guess that's what I miss listening while I work. I have a small, cheap grain mill on the way to retrofit for this purpose. Thanks for the pointer.
do you think this work for high revolution of the shaft (connected to an electric motor)?
Yes, with a v-belt transmission and an electric motor (1/2 hp?) and about 600rpm
Yeoman work. ty
Доброго дня, скільки коштує такий станок чи можна замовити у вас.
Ми їх не продаємо, і доставка їх буде дуже дорогою. Безкоштовні плани будівництва для вас або когось із тих, кого ви знаєте, щоб побудувати такий, наведені вище. Удачі!
I wonder how much of the abrasive from the sand paper that's not lasting ends up n your final flour
I would think the winnowing would take care of that.
@@CathyGoes sandpaper abrasive is very small compared to the grain, so a fine screen would likely filter it out.
will that machine be suitable for the oat grains?
The machine, as built, did not work well for oats. However, we did not have enough oats to experiment with, and I think it would be possible to change the size and material of the plates to do oats, barley, and other tough hulled grains. We made it work for rice and einkorn.
Oats are difficult to dehull. With more agressive plates there's a possibility it would work but it would require some trial and error.
does it work with sunflower seeds
we never tried sunflower seeds but if you are prepared to experiment with more textured and agressive plates it might just work