2313 The Diaphragm Piston

[@8ank3r]

So nice to hear your laugh again. cheers

[@ThinkingandTinkering]

cheers mate

[@frankfaubert1927]

Great video Rob. I must have zero curiosity because i would have never thought about that in a hundred years. Good job.

[@ThinkingandTinkering]

it just came to me mate lol

[@SierraNovemberKilo]

I suspect a proportion of viewers will be gurgling with laughter long before you reach your signature giggle Bob. Ooh missus. Nevertheless, yes indeed a handy solution. Arf arf.

[@ThinkingandTinkering]

yes i suspet so too lol - but hey it is a useful device lol

[@pixelrancher]

Guilty.

[@dennissorensen8765]

I can confirm your suspicion, good Sir. 🙈😄

[@ThinkingandTinkering]

@@pixelrancher lol

[@Luziferne]

I came to make the same comment, but really XD btw if you think you need to seal a larger piston... there is always size XXL So much stuff for double entendres, so many already taken xD

[@KarlLew]

Brilliant! I do worry about premature latex rupture after vigorous repetitive cycling at pressure. Fortunately repair is indeed cost effective although the pump certainly cannot be warranted against side effects of leaks. 🤔❤

[@ThinkingandTinkering]

as you say it is an easy repair but i guess you cluld always try something thicker or stronger

[@KarlLew]

@ Indeed. I looked these up and found your own video from 2y ago and many other “rolling diaphragm cylinder” doohickeys with serious application. With suitable fluid such as water, even the black stuff you applied woulld be superfluous. So now you’ve inspired me to find some use for this in the garden. 😂Thank you and welcome back!❤️

[@CaosAngel]

The easiest and most brilliant diafrag piston i ever saw, excellent.

[@ThinkingandTinkering]

wow - cheers mate

[@coconutterrence8549]

that will get every ones brain going thanks . good going mate terry 👍

[@ThinkingandTinkering]

I hope so mate - cheers

[@wrekced]

The diaphragm is also known as a "roll-sock" or "rolling diaphragm" seal. The company "exactseal" makes them and has a web site with some technical data about them. Thanks for this great idea!

[@ThinkingandTinkering]

thanks for the info mate

[@Vibe77Guy]

I worked with a much larger version as a diaphragm actuator on industrial valves.

[@ThinkingandTinkering]

i think that is there main use isn't it?

[@Vibe77Guy]

@ThinkingandTinkering One of them. Diaphragm pumps are another. The principle is also used in large truck suspensions. Variable pressure air ride suspensions.

[@Vibe77Guy]

@ThinkingandTinkering Come to think of it, pressure regulators all use some sort of diaphragm operator due to the low friction losses in the process. Carburetor fuel pumps as well.

[@ThinkingandTinkering]

@@Vibe77Guy cheers mate

[@ThinkingandTinkering]

​@@Vibe77Guy true enough - but in those applications I thought they were mostly low stroke high frequency

[@anthonywilliams7052]

I think I had a class on this in 6th grade on how to put latex on your piston. LOL...

[@ThinkingandTinkering]

lol - nice one mate

[@ElizabethGreene]

Those are significantly more durable in this use case than a glove, but I understand why you wouldn't want to use that in a KZbin video.

[@Philip-hv2kc]

There was a fella in our old discontinued Electronics Australia magazine which was the best of it's kind in the world who wrote about a vacuum pump he constructed for a science project when he was fourteen. The hand vacuum pump surprisingly reached very very low vacuum or do we say high vacuum......a very low vacuum pressure is a high vacuum..... . Naturally he used THE best designed rubber sleeve for the job but it's just that he had to explain it on stage to visiting dignitaries.

[@kadmow]

We were using glove fingers to shoot rocks as kids - glove gun, more like a 1 stroke aor engine.... before fun was both taken away and commoditised for so many. ( Mums windows may be a little safer these days )

[@ThinkingandTinkering]

awesome lol - and i guess the windows might be - but what a shame lol

[@AndreaDingbatt]

Thank you Robert!! (Sadly all the double entendres have been taken,Oh well..)😅 Much love from "Sunny" Carlisle. Andréa and Critters. ...XxX....

[@ThinkingandTinkering]

while i was making it I thought there would be afewlol

[@tdx110]

Hello Mr. Robert Murray. I would like you to read this post in its entirety. I have been following your channel for a long time, and I have recently started supporting it. Just like you, I would like to show everyone what you can easily do yourself and I would like you to help me with this, and specifically, that you could record one discovery that I have made for everyone. So, I watched your video about the Bromine Zinc Battery and I was looking for a cheap and good membrane. In short (so that I do not misunderstand, because I do not know English well) I checked and a resin from a 3D printer is ideal as a membrane (polymer resin will probably also be suitable). I poured a thin layer of resin onto zinc (disassembled from a Zinc Carbon battery) and hardened it with UV light. I checked with a meter and it did not show a "closed circuit" (resistance greater than 10MOhm). I poured water with salt onto the resin, and then touched the resin with water with salt with a carbon rod (from the battery). It showed a stable voltage of 1V and a current of about 5mA (the immersion area of ​​the carbon electrode is about 1x1mm) I think it is a very interesting solution to use resin as a membrane, especially since you can make a very thin membrane out of it. In addition, it has an even surface. Another thing I wanted to suggest is that after disassembling and cleaning the zinc battery, you can use it as a zinc bromide battery (after a few modifications). If you are interested in this solution, I would be very grateful if you mentioned me :) Best regards Damian Owczarek

[@ThinkingandTinkering]

That is an excellent discovery mate - but you really need to do your own video on it - I am more than happy to promote your video for sure - but it is down to you to make the video and it is your discovery

[@WarkWarbly]

I have recreated Tom Cranton's (I think that's the youtuber dude) air engine and found that a 50/50 mix of silicone personal lubricant and polishing compound works quite well. Bore lap about 10-15 minutes and then clean and paint and your finished!

[@ThinkingandTinkering]

cheers mate

[@atrumluminarium]

Tom Stanton?

[@WarkWarbly]

@@atrumluminarium Maybe? Does he post his stuff on Thingiverse and Printables?

[@gshingles]

@@atrumluminarium Tim Station? 😉

[@1fly2fly24]

Well done. Now add two one way valves to the setup for flow control.

[@ThinkingandTinkering]

absolutely mate

[@totherarf]

There is something that is quintessentially English about making a key component for an engine out of a rubber glove! I was thinking in terms of a liquid seal but your method is, I think, better!

[@ThinkingandTinkering]

lol - cheers mate - liquid pistons have been used for stirling engines

[@totherarf]

@@ThinkingandTinkering I was thinking of inverting the piston so TDC is down and the bore filled with liquid. But that way you need to move the mass of the liquid so not too good I think! Of course if we had a compressible liquid ....

[@hightechredneck8587]

One thought I had while watching. Add a couple check valves and you have a manual liquid or air pump. Thinking emergency fuel extraction in a grid down situation.

[@ThinkingandTinkering]

yep it would do well mate - nice suggestion

[@velcroman11]

I have a feeling this video is the start of something really interesting, I hope. 😊

[@ThinkingandTinkering]

cheers mate

[@Philip-hv2kc]

Other dry powder lubricants are talcum power if it's still available and boric acid i discovered once long ago , boric acid is a powder and was available from ceramic craft suppliers.

[@ThinkingandTinkering]

thanks for the info mate cheers

[@salimufari]

5:00 Love the vid but I don't want to know how much graphite you just inhaled.

[@ThinkingandTinkering]

less than wen you sharpen your pencil probably

[@211shanec]

Hey Robert, love all the videos. Did I miss an in depth review of the liberator rocket stove you got? Would love to see about incorporating a venturi into a rocket stove design.

[@johnwynne-qx6br]

Excellent design and idea 👍

[@ThinkingandTinkering]

Thank you! Cheers!

[@ianjackson4571]

Hey Rob please can you have a go at Angelo di Pietro's air engine?

[@ThinkingandTinkering]

you know I thought i Had done something on that but I looked for it and couldn't find it - so maybe i only planned to - I stil have the model drawings so happy to mate - cheers

[@azlandpilotcar4450]

"six other" fingers to work from? Great video, again, Rob, but is there something you're NOT telling us?

[@ThinkingandTinkering]

lol - doing my bes tnot to mate - family show lol

[@jamesross1003]

This type of piston makes it easy to make a Sterling Engine. Thanks Robert! Much appreciated. How did you keep a straight face when you called it finger shaped? LOL

[@ThinkingandTinkering]

lol - i have no idea how i did it lol

[@robertwestfall7561]

A suggestion, could you please make a 3d printed sterling engine using this piston.

[@Forensic1Man]

Robert! This was a nice, short video to make a diaphragm pump. Now, can you make a vacuum or compressed air pump out of this design? I would like to see a vacuum pump that would allow me to make a mass spectrometer! Could you make a mass spectrometer?

[@ThinkingandTinkering]

a compressor easily a vacuum pump i am not sure - I would think I could make a mass spectrometer if i wanted to

[@DaremoKamen]

How would other common glove materials work, like vinyl or nitrile?

[@ThinkingandTinkering]

I don't know - give them a try

[@donniewatson9120]

Cold side of a Stirling engine.

[@ThinkingandTinkering]

indeed

[@kadmow]

YES, most plastics aren't suited to hot side work.. Fairly low power/ pressure... NB. well-sealing rams are hard to get right, even using metal - with 3D printing, everyone just wants it to work right out of the box, real world results take some finishing.

[@mitzipigna]

Sorry for the picture about the lady called Patti🌹

[@ThinkingandTinkering]

She was my wife and thank you

[@sarai3055]

Hey Robert when the world crashes and everything comes to a stop we will be the people that are going can we help you. Will anybody under the age of 40 will be freaking out.

[@ThinkingandTinkering]

they probably will lol

[@jtpinion4294]

Brilliant 😂

[@ThinkingandTinkering]

cheers mate

[@f-14pilotyikes12]

When Stirling engine ?

[@ThinkingandTinkering]

what?

[@liamtingle2762]

Is there no way of using a combustion at the bottom of a a tube of liquid, to create a gas that carries a large weight back to the top, then sink it again to produce electricity? The electric ignites a chemical to create a gas and the cycle continues? As such?

[@justtinkering6713]

@@liamtingle2762 this is good for a Stirling engine.

[@ThinkingandTinkering]

that's what a stirling engine does mate

[@liamtingle2762]

@@ThinkingandTinkeringbut instead of an external heat source, what happens if we put the gas and spark inside the piston? How high could the explosion take it ? Am I being daft here 🤣 sorry not very mechanical. Thinking of a yo yo effect

[@liamtingle2762]

@@justtinkering6713please let me re explain, like a hot air balloon carries weight up. Could we not create an air bubble at the bottom of a tube, carrying a weight up to the very top using buoyancy then drop the weight to produce electricity ? Like a disc shape creating electricity when it drops? 😂

[@justtinkering6713]

@@liamtingle2762 Sounds like Stirling cycle. I think a spark plug explosion would melt things. But stirling can work at very low temp difference.

[@vornamenachname762]

Let's use wather as piston and smah it in itselfe vaccuum by igniting its own Brown's Gas😂

[@ThinkingandTinkering]

you can use water as a piston

[@vornamenachname762]

@ThinkingandTinkering yes. And produce Brownsgass in same volume. And let it flush against it's own vacuum🌊 in the same volume🤣 now we got stronger inside than outside forces. 1/1700 steam quantety seamingly the Browngass quantety. But against molecular pressure like ATAMOSPHERE🌦

[@rjung_ch]

👍💪✌

[@ThinkingandTinkering]

cheers mate

[@MrDiscoseeker]

6 spares? How many fingers? 😊

[@ThinkingandTinkering]

the thumb and little finger are much smaller so not much use if you get this far

[@MrDiscoseeker]

@ was only kidding my friend, thought maybe they were special gloves for special people 😉

[@justtinkering6713]

Don't you have to fasten the pointy end to the glove tip?

[@ThinkingandTinkering]

nope

[@justtinkering6713]

@ThinkingandTinkering now that's really cool then. But what if the actual piston has resistance to movement, sucking on the cylinder will cause piston/rubber diaphragm separation.

[@ThinkingandTinkering]

glue it if you want mate - it it probably won't - it didn't do for me when i was sucking on it - the latex is only lubricated on one side and the unlubricated side seems to 'stick' pretty well to the piston - but probably more tests would be a good idea

[@Mark_Linford]

🙂

[@ThinkingandTinkering]

cheers mate

[@AILikeStudios]

Thank you Robert, you are a treasure. New account, long time follower 🩵 ✨

[@ThinkingandTinkering]

awesome mate - cheers