"C-type? where is category? I'll put question here.
#21

Might recheck the copyright license. UK might have a different aspect. Jag is remaking the E-Type Lightweight and now the XKSS, which means they retain all patterns. Probably have to buy a pattern to reproduce for TradeMark reasons. The replica manufactures make their own patterns and do add they have no affiliation to Jaguar or they are a Heritage Jaguar approved dealer.
#22
Veteran Member
Join Date: Nov 2011
Location: Atherton Tablelands Nth Qld Australia
Posts: 1,186
Thanked 266 Times
in
200 Posts

Isn't that the Kettle? The 1952 Long-tailed C-Types, who's aero bodies made them blisteringly fast down Mulsanne Straight, but were fatally prone to overheating. That's what you get when you leave the cooling system's design to a bloke named Roy Kettle!
#23
Junior Member

I understand the overheating was first ascribed to the new body shape. After further analysis they found the water pump caused the problem. I vaguely remember it was cavitation, not a seal or bearing failure. I also believe they used the later type pump body design, as found in XK140s and XK150s.
#24
Veteran Member
Join Date: Nov 2011
Location: Atherton Tablelands Nth Qld Australia
Posts: 1,186
Thanked 266 Times
in
200 Posts

A larger diameter hose & repositioning the header tank away from engine heat were proven to make a big difference too. But it was all academic by then as the 1952 Le Mans season was done, & that year remains a blemish in Jaguar's magnificent 1950's record of wins at that track
#25

Well, to answer the three posts the cars weren't actually very fast at all in the end, in fact slower than the standard C-type. The reason was that as Malcolm Sayer planned, the shape was that of an aerofoil, and it did exactly what he wanted - but the opposite to it! The rear end lifted above 120 mph and the cars were squirreling down the 4 kilometre Mulsanne straight (actually and properly called the Hunaudières by the way). The repositioning of the header tank, on the bulkhead in front of the passenger side, was part of the problem for the failures, and whenI had a long chat with Norman Dewis about it he said that the pipes between the header tank were 7/8ths and he changed them to 1 1/4, plus the water pump pulley was the wrong size and caused cavitation. He then did several hours at MIRA with no problems.
Except that wasn't the cause of the problem anyway. It was, as further research and interviews have revealed, something completely different, and something one could never really think of. Having teased you here, I have sadly to say that for the moment I have given my word not to reveal the true cause of the failures.
Here are a couple of pictures of the car on the grid at the goowood revival and also one where you can just see the header tank.


You'll not I am positioned next to Jackie Stewart in his F1.
Except that wasn't the cause of the problem anyway. It was, as further research and interviews have revealed, something completely different, and something one could never really think of. Having teased you here, I have sadly to say that for the moment I have given my word not to reveal the true cause of the failures.
Here are a couple of pictures of the car on the grid at the goowood revival and also one where you can just see the header tank.


You'll not I am positioned next to Jackie Stewart in his F1.
#26
Veteran Member
Join Date: Nov 2011
Location: Atherton Tablelands Nth Qld Australia
Posts: 1,186
Thanked 266 Times
in
200 Posts

The magazine article I'm referencing is from UK Octane's archives, & is about the replica that I think the original pic, at the start of this thread, was of. In that article they weren't allowed to give the car full throttle, though they said the overheating problem had been cured (by repositioning the header tank). But they said it was definitely quicker than a standard C-Type & would have delivered an extra 10-15kph down Mulsanne Straight. It's all academic now. But I wish whoever now owns that replica would allow it to be driven full bore around Le Mans, just to settle the argument.
Last edited by scatcat; 01-08-2017 at 06:11 AM.
#27

The magazine article I'm referencing is from UK Octane's archives, & is about the replica that I think the original pic, at the start of this thread, was of. In that article they weren't allowed to give the car full throttle, though they said the overheating problem had been cured (by repositioning the header tank). But they said it was definitely quicker than a standard C-Type & would have delivered an extra 10-15kph down Mulsanne Straight. It's all academic now. But I wish whoever now owns that replica would allow it to be driven full bore around Le Mans, just to settle the argument.
The Following User Says Thank You to lowdrag For This Useful Post:
moronthethrottle (08-20-2018)
#28
Veteran Member
Join Date: Nov 2011
Location: Atherton Tablelands Nth Qld Australia
Posts: 1,186
Thanked 266 Times
in
200 Posts
Thread
Thread Starter
Forum
Replies
Last Post
Jaguar Forums Editor
Jaguar Press release
0
09-03-2015 10:38 AM
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)