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Allchin 1.5" Injector Options

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Howard Atkins 129/01/2020 14:24:37
7 forum posts
9 photos

Hi,

What's the preferred injector for the Allchin 1.5" Royal Chester?

I'm replacing the injector on my fathers Allchin, should I buy a standard size 2 injector or the 'Allchin' injector from Polly Models?

Regards

Howard

Clive Brown 129/01/2020 15:01:31
628 forum posts
26 photos

As specified in the original Hughes' design, the injector has a side inlet for the water. The Polly injector might have that feature whereas most commecial offerings don't AFAIK. However, I 'm not suggesting that side entry is essential.

Nick Clarke 329/01/2020 17:28:00
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1154 forum posts
48 photos

In the re-run of the series in the 1970's W J Hughes noted that the original injector was taken from LBSC's 3 1/2" loco Petrolea - if that gives you any idea of the capacity required??

julian atkins29/01/2020 21:28:08
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1238 forum posts
353 photos

Hi Howard,

Suggest you contact Paviersteam, usual disclaimer, though currently the website omits the previous extensive list of Len Steel injectors to the Gordon Chiverton designs, so I don't quite know what has happened recently.

What is wrong with your father's original injector fitted?

I recall Bill Hughes stating he was going to describe the injector for 'Royal Chester', but I don't think he ever did. I thought I had a complete set of MEs for 'Royal Chester', but I might have missed an issue, as I am not that interested in miniature traction engines generally.

Cheers,

Julian

Nick Clarke 329/01/2020 22:16:04
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1154 forum posts
48 photos
Posted by julian atkins on 29/01/2020 21:28:08:

I recall Bill Hughes stating he was going to describe the injector for 'Royal Chester', but I don't think he ever did. I thought I had a complete set of MEs for 'Royal Chester', but I might have missed an issue, as I am not that interested in miniature traction engines generally.

Cheers,

Julian

That sound like the mag i was reading by chance the other day - He mentioned the Petrolea reference to his original articles and that he had drawn up his own design in the 1970's but he had not yet traced it and had prints produced and readers were not to write in for them yet. It may never have happened.

Howard Atkins 130/01/2020 10:43:10
7 forum posts
9 photos

Thank you for all your replies, very helpful.

Polly models 'Allchin' injector has a side inlet for the water.

As for the original injector this has been machined incorrectly, it will not function and modification to suit would be rather difficult.

Regards

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