By continuing to use this site, you agree to our use of cookies. Find out more
Forum sponsored by:
Forum sponsored by Allendale Jan 24th

Tuna Can Blower

Making a steam raising blower from Tuna Cans

All Topics | Latest Posts

Search for:  in Thread Title in  
Stewart Hart22/01/2020 13:49:57
avatar
Moderator
627 forum posts
334 photos

Why do they call steam raising blowers when they suck ?. laugh

On with the mater in hand, I've tired various blowers and I found the best to be the ones made from 24V ex-military radio cooling vans you could get these quite cheep at one time but with scarcity they are getting expensive. And as is my natural curiosity I've stripped a fair number of blowers down. Then when making myself a lunchtime Tuna sandwich I looked at the empty tin and had the idea of making a blower out of it, I took the empty tin with us when we next went to the supper market looking for a suitable tin to make the inner fan out of to me delight I found that the smaller tins of Tuna they sell would just fit the bill. 24V electric motors are easy to obtain of the net.

A few manufacturing shot

dsc03635.jpg

Material

dsc03641.jpg

Drilling the base of the fan the vanes were put in with a wood chisel whilst the inside was supported by a lump of wood.

dsc03661.jpg

The gap for the exhoust vent

dsc03660.jpg

The exhaust with its paper pattern

dsc03663.jpg

Soldering the exhaust

dsc03665.jpg

Machining the top and bottom plates these were made from 100mm dia ally blanks bought of the net.

dsc03667.jpg

Completed blower

And yes it does work I recon at that size it would be fine for smaller 5" gauge and 3 1/2, 2 1/2 locos

If you need a bigger blower you'd just have to find some bigger cans.

Stew

 

Edited By Stewart Hart on 22/01/2020 13:54:23

Brian Sweeting22/01/2020 14:28:30
414 forum posts
1 photos

Great job, well done.

Brian H22/01/2020 14:37:55
avatar
1585 forum posts
104 photos

I'm impressed. The only problem I have is that I'm a vegetarian so no tuna cans!!

Brian

Bryan Cedar 122/01/2020 14:42:33
42 forum posts
1 photos

Hi Stew

I guess it works just as well with salmon tins, great job !

Bryan

Mick B122/01/2020 15:05:43
1553 forum posts
83 photos
Posted by Brian H on 22/01/2020 14:37:55:

I'm impressed. The only problem I have is that I'm a vegetarian so no tuna cans!!

Brian

Lidl sometimes sell Dolmades - Greek vine leaves stuffed with rice - in cans of similar size, shape and aspect ratio.

laugh

Edited By Mick B1 on 22/01/2020 15:07:02

Andrew Evans22/01/2020 16:23:12
313 forum posts
8 photos

Smells a bit fishy

mick H22/01/2020 16:50:33
718 forum posts
21 photos

Neat job. Well done.

Jeff Dayman22/01/2020 16:52:20
1793 forum posts
45 photos

Great design and build Stewart! Well done. I chuckled when I saw your soldering photo with the cotter pins / split pins used as sheetmetal clamps. I've used them the same way.

Usually it's too bad when something you made really sucks, but in this case it CAN be perfect! smiley

Ed Duffner22/01/2020 17:53:12
787 forum posts
90 photos

" If you need a bigger blower you'd just have to find some bigger cans. "

Watney's Party Seven? laugh

Ed.

Mike Poole22/01/2020 17:58:24
avatar
2545 forum posts
60 photos
Posted by Brian H on 22/01/2020 14:37:55:

I'm impressed. The only problem I have is that I'm a vegetarian so no tuna cans!!

Brian

Give the tuna to the cat and you have won a cansmiley

Mike

Bryan Cedar 122/01/2020 18:02:44
42 forum posts
1 photos

Looks like you are into making metal underpants at the same time, see photo number 4 !

Hacksaw22/01/2020 18:17:20
428 forum posts
173 photos

Granny knickers

Stewart Hart23/01/2020 08:05:14
avatar
Moderator
627 forum posts
334 photos
Posted by Bryan Cedar 1 on 22/01/2020 18:02:44:

Looks like you are into making metal underpants at the same time, see photo number 4 !

I had the same thought Bryan it does look like a pair of Y fronts smiley

Thanks for your interest gents and comments smileysadlaughlaugh

Lets see some veggie based blowers

Stew

Stewart Hart23/01/2020 08:11:47
avatar
Moderator
627 forum posts
334 photos

Just to add a bit more interest to the thread, when drilling thin sheet with a normal drill you can run into trouble with a ragged hole or even worse.

I was shown this little trick when I was an apprentice, grind a drill up with a little teat and a slightly undercut flat, this way the teat acts as a pilot and the under cut means that only the edge of the drill cuts, it cuts out a washer out and you end up with a nice clean hole.

dsc03643.jpg

dsc03647.jpg

Stew

not done it yet23/01/2020 08:46:49
4507 forum posts
16 photos
Posted by Mike Poole on 22/01/2020 17:58:24:

Give the tuna to the cat and you have won a cansmiley

Mike

Might be OK for a veggie, but def not for a vegan? They would only have vegetarian cats, at best (presumably).🙂

Paul Lousick23/01/2020 09:02:36
1377 forum posts
532 photos

Very neat Stuart, and a basic answer to "Why do they call steam raising blowers when they suck ? "

Called blowers because the air is pushed (blown) by the centrifugal action in this case, causing a reduction in air pressure on the inside of the rotor. The atmospheric pressure pushes air into this space to achieve equilibrium.

Paul.

Georgineer23/01/2020 10:27:28
340 forum posts
16 photos

That's a neat dodge, Stew.

Do you know - does anybody know - if it would work with a lip-and-spur drill as commonly used for wood, or are they too soft for metal?

George B

Windy23/01/2020 10:27:58
avatar
779 forum posts
152 photos

Recycling

Neil Wyatt23/01/2020 13:24:02
avatar
Moderator
17734 forum posts
697 photos
77 articles
Posted by Paul Lousick on 23/01/2020 09:02:36:

Very neat Stuart, and a basic answer to "Why do they call steam raising blowers when they suck ? "

Called blowers because the air is pushed (blown) by the centrifugal action in this case, causing a reduction in air pressure on the inside of the rotor. The atmospheric pressure pushes air into this space to achieve equilibrium.

Paul.

More likely because they take the place of a conventional stem blower which pushes steam up the chimbley to create a draught?

Neil

Howard Lewis23/01/2020 22:37:27
3149 forum posts
2 photos

Again, an Engineer showing his ancestry going back to the Greek root for Ingenious.

Definitely a Like!

Howard

All Topics | Latest Posts

Please login to post a reply.

Magazine Locator

Want the latest issue of Model Engineer or Model Engineers' Workshop? Use our magazine locator links to find your nearest stockist!

Find Model Engineer & Model Engineers' Workshop

Support Our Partners
cowells
emcomachinetools
Eccentric July 5 2018
Ausee.com.au
Warco
ChesterUK
Allendale Electronics
Eccentric Engineering
Subscription Offer

Latest "For Sale" Ads
Latest "Wanted" Ads
Get In Touch!

Do you want to contact the Model Engineer and Model Engineers' Workshop team?

You can contact us by phone, mail or email about the magazines including becoming a contributor, submitting reader's letters or making queries about articles. You can also get in touch about this website, advertising or other general issues.

Click THIS LINK for full contact details.

For subscription issues please see THIS LINK.

Digital Back Issues

Social Media online

'Like' us on Facebook
Follow us on Facebook

Follow us on Twitter
 Twitter Logo

Pin us on Pinterest