Member postings for Alan B

Here is a list of all the postings Alan B has made in our forums. Click on a thread name to jump to the thread.

18/01/2011 22:58:07

Hi All,

It's all about mechanical feedback due to geometry of the machining setup, especially the fatal dig in one can get with a front mounted parting tool. The front tool gets deflected downward and into the work, the rear is deflected upwards and backwards away from the job. It's quite surprising how much a parting tool can deflect under cut, especially noticable on an interrupted cut, eg on a square bar.

Alan B.

Thread: Model traction engine wheels

18/07/2010 21:09:32

Thanks for those links, sorry, don't have much in the way of photos as yet. I'm OK for the cylinder block, as I'm using a spare that I had cast for my Fowler Z7S ploughing engine about 15 years ago, - about time it got used for something!

16/07/2010 22:34:15

Hi Jason,

Thanks for that info, I shall follow it up. I am deigning and building a Fowler B6 Road Loco, on rubbers, in 1/5 scale , I can't cope with the logistics of a 3" scale one, and 2" is a bit too small.

15/07/2010 22:43:21

Does anybody know of any firms that will fabricate steel traction engine rims?

Size is typically 16" ( 400mm) diameter by up to 4", ( 100mm) wide.

Preferably in or near Essex.

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