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Shorrock superchargers


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#1 David Beard

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Posted 26 November 2010 - 12:35

I recall these being sold by Allard, and them selling a supercharged Anglia they called the Allardette?
They often appeared fitted to Spridgets, and the like.

I have a specific question: does anyone these days repair or refurbish them?
As they were vane type units, would someone who looks after the Zoller one on an ERA be able to help?


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#2 vintagetriumph

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Posted 26 November 2010 - 12:44

I recall these being sold by Allard, and them selling a supercharged Anglia they called the Allardette?
They often appeared fitted to Spridgets, and the like.

I have a specific question: does anyone these days repair or refurbish them?
As they were vane type units, would someone who looks after the Zoller one on an ERA be able to help?


Hi David. I used to have a Shorrock Blower on an MG TC, and had it refurbished by Allards in Upper Richmond Road at the time - but they are long gone now and I would therefore suggest Derek Chinn, VSCC member and specialist in superchargers. Follow this link for more info: www.racecar.co.uk/derekchinn/main.htm

#3 David Beard

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Posted 26 November 2010 - 13:01

Hi David. I used to have a Shorrock Blower on an MG TC, and had it refurbished by Allards in Upper Richmond Road at the time - but they are long gone now and I would therefore suggest Derek Chinn, VSCC member and specialist in superchargers. Follow this link for more info: www.racecar.co.uk/derekchinn/main.htm


Thanks, that sounds helpful. I have sent Derek an enquiry.

#4 David McKinney

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Posted 26 November 2010 - 13:43

Why don't people call them Shorrocks superchargers?
They were after all named after Chris Shorrocks

(Or am I talking bollock?)

Edited by David McKinney, 26 November 2010 - 13:47.


#5 David Beard

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Posted 26 November 2010 - 14:41

Why don't people call them Shorrocks superchargers?
They were after all named after Chris Shorrocks

(Or am I talking bollock?)


Don't know, but...

http://www.shorrocks...OfShorrock.aspx

Actually, Googling around, there seems to be a lot of confusion on this :rolleyes:

Edited by David Beard, 26 November 2010 - 14:45.


#6 Sharman

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Posted 26 November 2010 - 14:55

Don't know, but...

http://www.shorrocks...OfShorrock.aspx

Actually, Googling around, there seems to be a lot of confusion on this :rolleyes:

Never called it anything but Shorrocks, had one on a Minor 1000 in years(many)gone by.

#7 cooper997

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Posted 26 November 2010 - 23:06

This is the address published in 'The Motor' Reference Yearbook 1960.
Shorrock Superchargers Ltd - member of The Owen Organisation, Church St, Wednesbury, Staffs. Tel Wednesbury 1764.

As far as I'm (very briefly) aware, it was Noel & Chris Shorrock. Chris often had the handlebar moustache.

They were popular on Sprites because Alfred Owen & Chris Shorrock made an agreement with Donald Healey at the 1960 Earls Court Motor Show. Which probably means John Sprinzel sold a few while he was running the London branch of the Donald Healey Motor Company around that time.

As already mentioned Allard also dealt with Shorrock.

Stephen

#8 Catalina Park

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Posted 27 November 2010 - 00:57

Posted Image

From the website http://www.shorrocksuperchargers.co.uk/

#9 David McKinney

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Posted 27 November 2010 - 07:55

Thanks Stephen and Michael
I've seen those - and many others
But there are also countless reference to "Shorrocks" superchargers, especially in earlier days
I'd just love to get to the bottom of it some day



#10 Sharman

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Posted 27 November 2010 - 08:00

Thanks Stephen and Michael
I've seen those - and many others
But there are also countless reference to "Shorrocks" superchargers, especially in earlier days
I'd just love to get to the bottom of it some day

Possessive Shorrock's? :rolleyes:

#11 David McKinney

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Posted 27 November 2010 - 08:11

If I'm right in thinking the designer's name was Shorrocks, then it's conceivable that somewhere along the line someone made the assumption that the final 's' was a possessive, and dropped it. But strange for it to change officially :confused:

#12 Geoff E

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Posted 27 November 2010 - 08:35

SHORROCK ... SHORROCKS

Both are "real" names. In terms of England and Wales birth registrations in the first decade of the 20th century, the former outnumbered the latter by about 50 to 10 each year.

Without the leading "S" - HORROCKS - there were well over 100 registrations each year ... but not a single HORROCK.

Very few of those registrations were outside Lancashire.

I'm not sure when Supercharger Shorrock was born but in the period 1891 to 1921, there were seven Christopher SHORROCKs registered but only one Christopher SHORROCKS.

Edited by Geoff E, 27 November 2010 - 08:39.


#13 Tim Murray

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Posted 27 November 2010 - 09:29

On the website linked to by David and Catalina Park there's this original Shorrock document which starts off:

What is Shorrock Power?

Christopher Shorrock explains ....

Edited by Tim Murray, 27 November 2010 - 09:35.


#14 cooper997

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Posted 27 November 2010 - 09:31

A bit more digging...

At the 1961 Racing Car Show on the Owen Organization - stand 30, there was a display of Shorrock products on Ford Anglia & BMC A-Series engines, etc. In the spiel from the event programme, 'Shorrock' is mentioned 4 times.

Sporting Motorist November 1960 has the announcement of Donald Healey's agreement with Shorrock for sole world-wide distribution for fitment to BMC vehicles. Similarly the same piece mentions Allard's agreement for Ford.

Could it be that in a generic sense, motoring enthusiasts simply termed them 'Shorrocks' and that has stuck in their mind.

Maybe somewhere under all the piles & piles of BRM research DCN has done, Shorrock comes up in there too.

Geoff E - did you do a search for 'Noel' Shorrock v Shorrocks?

Stephen


#15 cooper997

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Posted 27 November 2010 - 11:22

Just having a look on Mark Forster's great Mini website - www.mk1-performance-conversions.co.uk and found a Shorrock supercharger for sale in the forum section. There's a photo of the identification plate fitted to the unit. Clearly states 'Shorrock Superchargers Ltd'.

http://mk1-forum.net...c.php?f=7&t=215

Stephen

#16 RTH

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Posted 27 November 2010 - 11:24

As they positively claim no modification to the engine is needed prior to fitting the supercharger and the compression ratio on a some of the 'A' series engines was already 9:1 they must have been quite a low pressure unit and would have consumed quite a bit of the extra power in driving the supercharger as well. No doubt a vane type supercharger such as this would have needed routine vane replacement if used for daily work and substantial mileage.

#17 Allan Lupton

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Posted 27 November 2010 - 11:37

To kick this thread out of the pointless debate about the name (which David could and (I assume) did read off the plate on his supercharger) I'd go along with Vintagetriumph that Derek Chinn is the man to repair/refurbish a Shorrock supercharger, or more or less any supercharger/blower. He lists most makes of vane supercharger (though I have to say the speling of their names a bit hit-and-miss) and even makes roots blowers himself.
Be interested to know how the enquiry you sent was answered, David.

#18 Geoff E

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Posted 27 November 2010 - 13:51

Geoff E - did you do a search for 'Noel' Shorrock v Shorrocks?


I have now :)

One Noel SHORROCK 1905 in Blackburn district - that's all.

#19 Mr Plug

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Posted 27 November 2010 - 16:29

I worked for Edwards High Vacuum as a young sprog - they made high performance vacuum pumps, The rotary mechanical ones had a very similar construction to a Shorrock blower and longevity wasn't a problem even under continuous running. They worked the opposite way round, of course, but still at a max pressure differential across the vanes of 1 bar. Don't suppose the Shorrock 'blew' higher than that so I don't suppose it had too short a life.

Interestingly, one of our senior research chaps had an Allardette - I often wondered if it was for a bit of exploratory research....

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#20 D-Type

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Posted 27 November 2010 - 17:00

I worked for Edwards High Vacuum as a young sprog - they made high performance vacuum pumps, The rotary mechanical ones had a very similar construction to a Shorrock blower and longevity wasn't a problem even under continuous running. They worked the opposite way round, of course, but still at a max pressure differential across the vanes of 1 bar. Don't suppose the Shorrock 'blew' higher than that so I don't suppose it had too short a life.

Interestingly, one of our senior research chaps had an Allardette - I often wondered if it was for a bit of exploratory research....

Did he put the vacuum pump on the exhaust? :drunk: Or did he try it instead of the Shorrock?