Model Engine Maker

Supporting => Casting => Topic started by: Bezalel on November 04, 2012, 10:57:16 AM

Title: Pattern making for a model IC engine
Post by: Bezalel on November 04, 2012, 10:57:16 AM

(http://i1095.photobucket.com/albums/i461/Bezalel2000/Wallaby/2012-11-04170708.jpg)


Since patterns are the common starting point of most sand castings, I thought it may be beneficial to provide a link to a build log that describes the methods I used for making the patterns to cast my


Model Engine for LMS 1831 (AKA Wallaby) (http://www.modelenginemaker.com/index.php/topic,930.0.html)


A 2 Cylinder 30cc petrol IC engine designed by Edgar Westbury in the 1940s


I hope you enjoy



(http://i1095.photobucket.com/albums/i461/Bezalel2000/Wallaby/drag-1-1.jpg)

Title: Re: Pattern making for a model IC engine
Post by: Don1966 on November 14, 2012, 03:56:06 AM
Those are nice patterns Bez. One thing I need practice at. I do want to start one day, but I have myself spread thin now. Once I decid to retire I my have more time. Right now time is limited.

Don
Title: Re: Pattern making for a model IC engine
Post by: Bezalel on November 14, 2012, 07:13:35 AM
Thanks Don
 
I had a lot of fun making them.
 
Its a real buzz seeing a little working donk reving away from castings made in the back yard, thats for sure.    :cheers:
 
Bez 
Title: Re: Pattern making for a model IC engine
Post by: Jo on November 14, 2012, 07:32:14 AM
Very nice set of patterns :ThumbsUp:. I see that they have been nicely rounded, smoothed and varnished (?), very necessary to stop the sand sticking. In my experience (I have only cast once :embarassed:) a well finished pattern helps discourage flashing on the casting.

Jo
Title: Re: Pattern making for a model IC engine
Post by: steamer on November 14, 2012, 10:15:51 AM
I got the chair and the popcorn!

Dave
Title: Re: Pattern making for a model IC engine
Post by: fcheslop on November 14, 2012, 10:55:36 PM
Thanks for posting this .Chair pulled and ready to start learning :ThumbsUp:
Many thanks
frazer
Title: Re: Pattern making for a model IC engine
Post by: Pete49 on November 15, 2012, 02:42:45 AM
Don when you retire you will have even less time than you have now :lolb: Ask anyone who has retired how big the list becomes
Pete
Title: Re: Pattern making for a model IC engine
Post by: Don1966 on November 15, 2012, 04:25:01 AM
Yea Pete, my buddy Jim has been retired for years and has less time now then before. So I get what you mean.

Don
Title: Re: Pattern making for a model IC engine
Post by: Meldonmech on November 18, 2012, 09:47:09 AM
Hi Bez,
           Nice to see projects where constructors are using their own castings, I have found it much more rewarding. Have just made the patterns for a beam engine and am waiting for a nice sunny day to do some casting.

              Cheers David
Title: Re: Pattern making for a model IC engine
Post by: Bezalel on November 18, 2012, 11:09:04 AM
Well  :hi: to the forum David.


I'd like to see your beam engine,  are you going to publish a build log?


Bez
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