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

Helping dad vertical engine

All Topics | Latest Posts

Search for:  in Thread Title in  
Eric Cox14/04/2015 15:40:05
avatar
474 forum posts
23 photos

`

Edited By Eric Cox on 14/04/2015 15:47:42

Stewart Hart14/04/2015 16:38:58
avatar
Moderator
533 forum posts
251 photos

?

smiley

Stew

Neil Wyatt15/04/2015 14:47:54
avatar
Moderator
13829 forum posts
583 photos
68 articles

!

Mike Bondarczuk15/04/2015 17:38:39
87 forum posts
6 photos

question

sarcastic 2

Stewart Hart15/04/2015 20:51:57
avatar
Moderator
533 forum posts
251 photos

? ?

cheeky

Michael Gilligan15/04/2015 20:59:25
avatar
11446 forum posts
487 photos

Given that Eric's post was under "Drawing Errors and Corrections" ... one might reasonably assume that the "Helping dad vertical engine" is near perfect.

Stewart Hart15/04/2015 21:03:54
avatar
Moderator
533 forum posts
251 photos

No I doubt it. crying

Errors always creep in some ware.

The best you can do is limit their impact.

Stew

Michael Gilligan15/04/2015 21:51:02
avatar
11446 forum posts
487 photos

Stew,

I did say 'near perfect'

... We must not ignore Eric's somewhat cryptic `

MichaelG.

JasonB16/04/2015 07:01:18
avatar
Moderator
13062 forum posts
1188 photos

Unless you got to read what he said before the post was edited, in which case you will know what its all aboutsecret

Eric Cox16/04/2015 09:21:05
avatar
474 forum posts
23 photos

My apologies, I couldn't find a way of deleting the post , however I will repost it. I won't go into the ins and outs of why I needed to remove it.

On the bill of material Item 15 Connecting rod should read 1/4" x 1/2" x 4"

Chris Gill13/06/2017 20:25:33
avatar
27 forum posts
13 photos

I'm busy making this engine at the moment and I believe I've spotted a small error on page 513 (April 2015).

I think the central portion of part 39 (the parallel shaft) should be 26mm long, which is the sum of the central portion of part 22 (14mm) and two copies of part 24 (6mm). This means the overall length of part 39 will be 46mm.

I'd also suggest making the studs (part 41) a bit longer, say 36mm, as the existing length only engages 3mm at each end. I made mine from 4mm threaded rod to save time.

Otherwise, looking forward to seeing it run

Chris

Stewart Hart14/06/2017 07:19:50
avatar
Moderator
533 forum posts
251 photos

Hi Chris

Thanks for your interest in the engine and for posting the drawing errors, I hope you enjoy the rest of the build.

Cheers

Stew

Eric Cox14/06/2017 09:38:09
avatar
474 forum posts
23 photos

Bugger. Does that mean I've made them too short.

Chris Gill14/06/2017 23:37:04
avatar
27 forum posts
13 photos

Hi Eric

I didn't realise until I did a trial assembly.

If it's any consolation I had to remake a part today because I got the first one upside down for part of the marking up. Doh!

Chris

Bob Mc15/06/2017 05:59:21
avatar
94 forum posts
10 photos

Yes..... I made one of those just to see if I could make anything that actually worked..!!

...nb... only ran it on compressed air but it certainly went.Vertical engine

Stewart Hart15/06/2017 08:28:27
avatar
Moderator
533 forum posts
251 photos
Posted by Bob Mc on 15/06/2017 05:59:21:

Yes..... I made one of those just to see if I could make anything that actually worked..!!

...nb... only ran it on compressed air but it certainly went.Vertical engine

Pleased you got a runner Bob, I hope you enjoyed the build, did you make the flywheel from perspex?.

I like to experiment with different ways of making things so I designed it with a fabricated fly wheel, have any of you guys made this fly wheel ?. I was a little unsure just how people would take to the design hence I gave them a chose of fly wheel design.

Cheers

Stew

Eric Cox15/06/2017 09:33:55
avatar
474 forum posts
23 photos

I fabricated it from 5" Dia. pipe. With a paper template it was easy to hacksaw and drill.

Stewart, is the grass hopper ready for publication yet ?.

Stewart Hart15/06/2017 11:21:36
avatar
Moderator
533 forum posts
251 photos
Posted by Eric Cox on 15/06/2017 09:33:55:

I fabricated it from 5" Dia. pipe. With a paper template it was easy to hacksaw and drill.

Stewart, is the grass hopper ready for publication yet ?.

Hi Eric

I submitted the Grasshopper article over 12 months ago for some reason its not been published, and as it was written as a follow on from the other two engines, the passing of time has taken that link away so it will need a re-write so that it will now stand alone, I'm not sure if it will be worth my time doing this.

Any way I've sent you the drawings and a link to a drop box with the article in it.

Any problems just drop me an email.

Cheers

Stew

Bob Mc15/06/2017 11:38:43
avatar
94 forum posts
10 photos

Hi Stewart..

Yes the flywheel is thick perspex as are the bearing housings, It was the only material in my junk box and I was concerned it would not be heavy enough but it runs ok and it was an education and a pleasure for me to make this model.

I think a heavier flywheel would be more appropriate ... one tip I can give is... bolt or clamp the engine base to a good solid bench, its probably my workmanship at fault, but when running it resembles a drunken Scotsman dancing over the crossed swords....! (not a derogatory remark to Scotsmen)... I am myself related to Scotland.

Thanks Stewart.

Chris Gill31/07/2017 23:26:33
avatar
27 forum posts
13 photos

It runs! Just got to make a nice base, clean up and paint it.

The first attempt ended with a loud bang. Then I realised I'd connected to the unregulated side of the compressor and the short connecting pipe had migrated to the other side of the garage. Ho hum

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

Latest Forum Posts
Support Our Partners
Eccentric Engineering
Ausee.com.au
Expo Tools July 14
Eccentric July 5 2018
emcomachinetools
Allendale Electronics
Sarik
ChesterUK
Warco
Shapiro
TRANSWAVE Converters
SPG Tools October Seventeen
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

Visit the Model Engineer
Exhibition website

Model Engineer Exhibition