Using Kean Maygib jigs

[Keith RobsonParticipant]

using Kean Maygib jigs ?

• This topic was modified 8 months, 2 weeks ago by Trade Officer.
• This topic was modified 8 months, 2 weeks ago by Trade Officer.

[John CutlerParticipant]

Am not sure what you are asking.

Which probably explains the lack of responses.

If you are asking how to use them, they are used to align the circular axle bearing holes in a conventional etched chassis. So the chassis is held by the brass jigs before fixing. The tapered axles are inserted in these and the coupling rods are laid over the ends to be a tight fit. Only when everything is lined up should the chassis and spacers be soldered up. Obviously the coupling rods must be carefully made up to ensure they are of the same lengths. A home-made jig can ensure that; drill holes in hardwood through a completed coupling rod and leave the drill bits in position; take out the first rod and assemble the second rod over these drill bits and solder it up.

The theory is that the coupling rods and axle-centres must now line up. This is true for a rigid chassis but once hornblocks are introduced instead of fixed axles, errors are easily introduced. On my last etched chassis build I used these then a Poppy jig to set the hornblock positions. There are alternatives and there are others on this forum much better qualified than me who may advise.

Am not sure if this answers your query.

Note these have not been sold by the EMGS Stores for quite some time.

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