Coventry K4 3/4” Identification

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WJH
Posts: 1417
Joined: Sat Jan 16, 2010 9:29 pm
Location: Florida

Coventry K4 3/4” Identification

Post by WJH »

I have the frames, drivers, axles, and four of the six axle boxes to what I believe is a Coventry K4. I bought these parts a decade ago. The frames have a taper on one edge of the axle box cutouts for an adjustable wedge. I think replicating this feature in live steam is rather rare. The drivers have 17 spokes, the middle drivers are blind. The axle bearing surfaces are machined to .6875 and are within a few tenths of each other.

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steamingdon
Posts: 604
Joined: Sun Feb 22, 2009 9:21 pm
Location: massachusetts,usa

Re: Coventry K4 3/4” Identification

Post by steamingdon »

Keith Taylor will know for sure what this is part of. Why a blind driver? this should be interesting. :? Tapered axel boxes?
steamer
WJH
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Joined: Sat Jan 16, 2010 9:29 pm
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Re: Coventry K4 3/4” Identification

Post by WJH »

John says the frames do not follow Coventry’s lines, not sure about the drivers either. Were 17 spokes common only to Pennsy designs?


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Trainman4602
Posts: 3482
Joined: Sat Oct 16, 2004 9:26 pm
Location: New Jersey

Re: Coventry K4 3/4” Identification

Post by Trainman4602 »

The prototype K4 was originally built with a center (main) driver blind. That was unusual for a 3 drivered main line locomotive. Early on it was tired and they remained tired until they were scrapped.
ALLWAYS OPERATING MY TRAIN IN A SAFE MANNER USING AUTOMATIC AIR BRAKES
Jerry_H
Posts: 241
Joined: Tue Feb 03, 2009 9:39 pm
Location: Central FL

Re: Coventry K4 3/4” Identification

Post by Jerry_H »

17 spokes is not just a Pennsy thing. The Southern Ps4 pacific had 17 spoke drivers as did others.

Jerry
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WJH
Posts: 1417
Joined: Sat Jan 16, 2010 9:29 pm
Location: Florida

Re: Coventry K4 3/4” Identification

Post by WJH »

Hmm, guess I will sell the wheel castings and frame.
I just purchased a new 12x36 lathe decked out with a DRO, coolant system, micrometer carriage stop, etc.
Time to make room in the shop and sell some stuff...
John, I still want to support what you are doing, I promise to buy some castings from you.
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