By continuing to use this site, you agree to our use of cookies. Find out more
Forum sponsored by:
Forum sponsored by Allendale Nov 29

A Video for Ron

All Topics | Latest Posts

Search for:  in Thread Title in  
JasonB05/01/2019 16:42:50
avatar
Moderator
14309 forum posts
1380 photos

I posted a photo of progress on this engine the other day and Ron asked why I had used ball bearings rather than bronze, I think this video should answer that.

ARC's 686 bearings straight off the shelf, not cleaned, no additional lubrication, I paid full price and I don't get any commission but they seem to run quite well.

mechman4805/01/2019 16:54:29
avatar
2196 forum posts
370 photos

Wow! 4 min. 22 sec. to come to a complete stop... nigh on perpetual motion... devil … can't complain about those bearings.

George.

Ron Laden05/01/2019 17:21:18
778 forum posts
105 photos

Wow Jason, I know that good ball bearings are free running but I would never have guessed for that long, certainly proves your point. The last 30 seconds when there is less momentum show just how free it runs, you certainly havnt got any friction to worry about there.

The flywheel, very nice, have you machined that from solid..?

Ron

Ketan Swali05/01/2019 17:50:32
1039 forum posts
87 photos

Jason,

That is indeed a long running time.

The late Roy Darlington well known for Stirling engines used to tell me that in certain cases to reduce further friction, it was a good idea to wash out the open bearings in paraffin before use, but in your case it seems unnecessary.

Ketan at ARC.

JasonB05/01/2019 18:26:55
avatar
Moderator
14309 forum posts
1380 photos

I may well give them a flush out before final assembly, at least that way if the engine does not work by give it a good spin and keeping the video short I can claim it's a runnersecret

Ron, its a casting off e-bay. I have bought a few from the same guy and they are good quality, he used to cast fr the old owners of College Engineering. Since the video I have had a good chew at the hub as it was too big for the 6mm PGMS shaft that I used.

Martin King 205/01/2019 18:33:18
545 forum posts
176 photos

Hi Jason,

Any chance of a link for the flywheel castings please?

Cheers, Martin

JasonB05/01/2019 18:34:56
avatar
Moderator
14309 forum posts
1380 photos

f:0">Flywheel

he has others too

Edited By JasonB on 05/01/2019 18:35:22

not done it yet05/01/2019 19:47:43
2468 forum posts
11 photos

Needs balancing!smiley

Ron Laden06/01/2019 10:16:52
778 forum posts
105 photos

Thanks for the flywheel link Jason, I see he does a 6 inch version which is just about right for my scale on the engine.

Ron

Ian S C06/01/2019 10:35:36
avatar
7157 forum posts
227 photos

I have not actually done the strip and degrease of the bearings I use, and most are shielded bearings. I think the general idea is to remove the shields, and the grease, but then use a very light oil in the smallest amount. On little bearings(3 mm/4 mm bore) a drop on the end of a pin.

Ian S C

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
Eccentric July 5 2018
méridienne Nov 18
Ausee.com.au
ChesterUK
Sarik
Warco
Shapiro
TRANSWAVE Converters
emcomachinetools
Eccentric Engineering
Allendale Electronics
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