Minnie Gears

Minnie Gears

This topic has 4 replies, 2 voices, and was last updated 6 June 2010 at 10:11 by JasonB.

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4 June 2010 at 21:47 #2690
John Shepherd
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@johnshepherd38883
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4 June 2010 at 21:47 #52431
John Shepherd
Participant
@johnshepherd38883
I am in the process of building a 1″ scale Minnie and have just machined the parts for the crankshaft and first shaft gears. The original article says to silver solder the gears and the fabricated keyways but I was wondering if Loctite 628 or similar would do the job?

I have nothing against silver soldering but for this job I thought that perhaps Loctite would overcome the problems of cleaning up and there would be no trace of solder to be seen.

As I have no previous experience of using Loctite other than the thread lock types, any advice or comments would be welcome.

Regards

John
5 June 2010 at 07:43 #52439
JasonB
Moderator
@jasonb
My only reservation would be that there is no keyway cut into the actual gearwheel so all the load will be applied through the joint which may be asking a bit much of the loctite. If you are just going to run on air then its unlikely to be an issue but if you are steaming under load?

A soft pencil (2b or similar) will leave a line that the solder should not flow over and you can always mount the soldered assembly onto a mandrel and take a light skim off to true things up and remove any excess solder.

I solderd my minnie and by the looks of things took a skim off but that was a while ago when my soldering was not as neat as it is now.

Jason
6 June 2010 at 09:57 #52446
John Shepherd
Participant
@johnshepherd38883
Jason

Thanks for you reply – looks like silver soldering it is. I have no aversion to soldering but I was just exploring new methods of doing things and what you say makes sense.

Thanks also for including the photograph lnk , it is helpful to show how mine should (hopefully) look .

regards
6 June 2010 at 10:11 #52447
JasonB
Moderator
@jasonb
John

If they are of use there are a few more pics of my engine towards the end of this album, also some close ups of the damper hinge I took for someone last week.

J
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