Primitive Technology: Belt and pulley blower

A second Blower on the same Shaft should be possible and would increase the Airflow without much Complications.

Mechanical engineer who travels back in time to a primitive age

So talented. I wouldn’t be surprised if John whittled a nuclear submarine from clay, bark and rope in the next video. Deffo the guy you want to be sitting next to when the plane crash lands in the rainforest. ❤

props for finely making your squirrel cage more efficient. I suspect the next installment will have bamboo pipe from your stream and a Pelton Turbine.

gotta be most impressive video yet.

Primitive lathe next?

Следующий этап- изготовление шарикоподпипников😂

<a href="https://www.youtube.com/watch?v=1799Rqn71A8&amp;t=1570">26:10</a> yea, but also humans are awesome. Even woth an uneven wheel, you are able to control it so that the rope has really consistent pressure on the small pulley. Subconscious fine motor adjustments.

i do wonder if archeological technological finds are limited by the use of unfired clay and perishable materials like wood and fibers in the ancient past

Next up: Water Wheel? :D

It seems like variations due to the hand crafted wheel is causing a lot of instability. Would it be worth building a rotating pottery table? That may give you the precision needed to build parts for some of these complex machines.

If the crossed rope belt provides better friction and less slipping, there&#39;s nothing stopping you from rigging that same belt path up with the framed design and just running the crank handle backwards.

This might be my favorite video up until now fo this channel, its amazing seeing the journey up until here, all the desings, all the ideas, the work, the thought, and building the infrastracture around it. The huts, the pottery, charcoal everything its literally phenomenal

I think one advantage of the no-frame basket wheel is that your muscles are intuitively compensating for any slack caused by minute imbalances, and as a result, are keeping the string tension much more consistent, overall. An incredibly impressive flame, at the end. And I realize this is so much further back, historically, but there&#39;s something wonderfully medieval about the sounds that final set-up makes.

You actually have <i>two</i> stages of gear reduction in play here. The obvious one of the small and large pulleys, but the relationship between the large pulley and the crank handle also matters. In the one you built the crank handle is nearly the diameter of the large wheel, but slightly reducing the length of the crank and increasing the diameter of the large wheel means that the large wheel travels further for every rotation of the crank (which is actually traveling an even shorter distance). Obviously you still need enough force to keep the system spinning, but I suspect you&#39;re nowhere near frictional limits yet and could get more useful airflow out of your effort with higher speeds.

A big advantage of the framed design is that it requires substantially less coordination to operate than your previous ones. You can easily turn it one-handed without even looking that closely, which means with the right geometry it would be possible to continuously run the blower with one hand while feeding the forge with handfuls of ore/charcoal with the other hand.

Still loving your content

A belt tensioner might help this run better too. Something like a track tensioner on some tanks and tractor tracks

If I may, why is it that you don&#39;t add fibrous to your clay? Even when fired, it atill adds tensile strength to the form. And I&#39;m also guessing you have a good reason for why not.

Perhaps when you build the frame again, try using a simple X on each side, with the axle of the large rotor resting in the upper crook of the Xs. Less construction and a natural groove for the rotor axle to rest in.