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Corey Levenson | profile | all galleries >> Moto Stuff >> Hedley Cox tree view | thumbnails | slideshow

Hedley Cox

Mr. Cox was a Velocette factory race mechanic from 1948-1952. He's raced at the Isle of Man TT, built his own parallel twin special (Covel 500), worked for Harley-Davidson in the 50's and is currently building a sleeve-valve motorcycle engine. Quite a fascinating character.
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Hedley Cox at the 1951 Manx GP with his Covel Special
Hedley Cox at the 1951 Manx GP with his Covel Special		 SDIM2401_2_3 - Hedley with his sleeve valve special
SDIM2401_2_3 - Hedley with his sleeve valve special		 SDIM2404_5_6 - Sleeve valve motor detail
SDIM2404_5_6 - Sleeve valve motor detail		 SDIM2407_8_9HDRI.jpg
SDIM2407_8_9HDRI.jpg
SDIM2484_2_3 - My stable
SDIM2484_2_3 - My stable		 SDIM2488_89_90 - Ralph, Frans, Me, Hedley, Jim and Gerard
SDIM2488_89_90 - Ralph, Frans, Me, Hedley, Jim and Gerard		 SDIM2492_3_1.jpg
SDIM2492_3_1.jpg		 SDIM3153_4_5 - Sleeve valve motor on the bench
SDIM3153_4_5 - Sleeve valve motor on the bench
SDIM3156_7_8 - Hedley Cox removing the head
SDIM3156_7_8 - Hedley Cox removing the head		 SDIM3177_8_9 - Front head removed
SDIM3177_8_9 - Front head removed		 SDIM3159_60_61 - Cranking the engine to show sleeve motion
SDIM3159_60_61 - Cranking the engine to show sleeve motion		 SDIM3162_3_4 - Jim inspecting the internals
SDIM3162_3_4 - Jim inspecting the internals
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Jacques from France 18-Oct-2014 18:05
An old friend working in the Veloce in the 60 confirm that Mr Cox book describe exactly what was the factory
and his management. About the interesting sleeve valve engine, Voisin and Panhard use them in their pleasant
(and expensive!) cars. The main problem is the oil consumption, and the sleeves precision, because their wall is very
thin..
I know that Panhard glue them with some cerruse ( i don't know the English name ) in the machine mandrels to do not misshape them during the process.
allan 30-May-2012 19:22
I've just read Mr. Cox's book and am amazed by his experiences. He has opened the world of formative British motorcycling up to me like never before. My interests have always leaned towards 60s and 70s Japanese motorcycles, the connection made during my youth, but now I'm fascinated by these early prototypical models. I met Mr. Cox several times throughout the 80s and had no idea he was who he is. my intention now is to meet him and discuss the Isle Of Man as well as so much more. Allan Kokinda
Guest 15-Jun-2011 03:43
The Sleeve Valve is new to me even though it has been around forever. I like your conversion of the Honda Engine. It isn't glamorous but I'm sure it works well.
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