Any ideas as to what engines this spark plug would of been used in? Its an AC Aircraft type LS87 from General Motors.
Also this glass panel which is around 1.5″ thick and 18″ long has been found by the daughter of a man who collected anything and everything to do with aeroplanes and cars. Can anyone identify it as being aeronautical or not?
Thanks.
By: Creaking Door - 19th December 2011 at 01:23
I’m sure they will ‘fit’ lots of things…..possibly even your car but that isn’t the issue with sparkplugs.
I think I’m right in saying that sparkplugs were one of the first things to be standardised in the aviation (or automotive) world; this is the reason that these American sparkplugs will have a metric thread!
The issue with sparkplugs is fitting the correct ‘rating’ of plug and that really means fitting the plug that will remain at the right temperature while the engine is operating; different ratings of plug transfer heat away from the electrodes at different rates and so the plugs operate at different temperatures. It is important to get this operating temperature right as it has a huge impact on the efficiency of the plug and the replacement interval.
By: Lincoln 7 - 18th December 2011 at 20:38
[QUOTE=Creaking Door;1835836]A little googling reveals that apparently after problems LS-87 sparkplugs can only be used on Pratt & Whitney R-1830 and Wright R-1820 engines rated under 1200 horsepower.
Warren, If they fit the R-1830, chances are they will also fit the R-2800?. also.
Jim.
Lincoln .7
By: Wyvernfan - 18th December 2011 at 20:31
Thanks guys. Unless anyone knows different i think we can discount the glass panels use on an aircraft.
By: Creaking Door - 18th December 2011 at 19:48
Any ideas as to what engines this spark plug would of been used in?
A little googling reveals that apparently after problems LS-87 sparkplugs can only be used on Pratt & Whitney R-1830 and Wright R-1820 engines rated under 1200 horsepower.
By: pagen01 - 18th December 2011 at 19:37
Another use for glass like that is on airfields, armouries and some engine test houses having thick viewing panels.
By: Wyvernfan - 18th December 2011 at 19:34
Good point, from an armoured vehicle… never thought of that!
By: Creaking Door - 18th December 2011 at 19:30
Yes, the only glass I could think needing to be that thick would be bullet-proof fighter windscreens; I could see glass panels that big on aircraft but not the need to armour them to that degree.
Plenty of vehicle applications: Police or Army vehicles for Northern Ireland, armoured-cars or civilian payroll vans?
By: Wyvernfan - 18th December 2011 at 19:22
Yes i agree Warren, its a heck of a slab of glass :D. I just couldn’t place an aircraft type that might of used such a square shaped piece of glazing.
By: Creaking Door - 18th December 2011 at 19:19
I’m thinking the glass looks more vehicle related than aircraft; I don’t know why.
I’d love to put it in my front door though…..break-through that y’ b’stards! :diablo:
By: Wyvernfan - 18th December 2011 at 19:18
Ok thanks Jim. Anyone else?
By: Lincoln 7 - 18th December 2011 at 19:06
Hi, I have a set of LS 85s, I cannot tell of any visible difference apart from the numbers.
Perhaps it wont help. but mine fit the following. Allison V1710-21 to 37. Lockheed Lightning, Curtis P40,, Flying Fortress, I assume B29. If there is a difference in their fitment, I would be interested. I think this series was fitted to a lot of WW11 Radials also.
Jim.
Lincoln .7
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December 18, 2011 at 4:14 pm