Stationary M25 Traveller Posted December 22, 2008 Share Posted December 22, 2008 What is the optimum temperature for CR500 tyres to get suitable sticky (on the road) ? Ambient temperature yesterday 11C - after a mornings blatting, the rears were 35C and the fronts 29C (on the tread face). Link to comment Share on other sites More sharing options...
6speedmanual Posted December 22, 2008 Share Posted December 22, 2008 Hi SM25T That sounds quite warm for a not very warm day. I have not measured tyre temps in any scientific way, but warm to the touch is generally good. What type of termometer did you use? An AVON Motorsport tyre engineer told me that the CR500 compound goes not really "get out of bed" at ambients less than 10 degC. Even worse when it's wet as the cold water keeps cooling the tyre. Peter 6SpeedManual *tongue*There's no such thing as too much BHP per Ton 😬 Link to comment Share on other sites More sharing options...
rj Posted December 22, 2008 Share Posted December 22, 2008 Ideally you'd want them a lot warmer. Link to comment Share on other sites More sharing options...
Stationary M25 Traveller Posted December 22, 2008 Author Share Posted December 22, 2008 A Farnell laser non-contact digital thermometer. Great bit of kit. Get the red dot on anything to read the temp - up to quite a big distance Link to comment Share on other sites More sharing options...
neilg Posted December 22, 2008 Share Posted December 22, 2008 I wouldn't have thought you'd get anywhere near sticky temperatures for cr500 on the road this time of year. It's tricky enough on a track. On a good warm trackday they can get damn near molten on the tyre surface and you can pull great chunks off...don't know what temp this is at though...... gonna find out this holiday once i've got my reversing gearbox back in and can hopefully go to mallory to watch the action on boxing day if i can get pass out from the commandant oops er wife. Link to comment Share on other sites More sharing options...
Ash.Bailey Posted December 22, 2008 Share Posted December 22, 2008 try harder 70C is nice and toasty no chance in these ambient conditions on the road with surface temp no more than 12 C If It aint yellow, wonky and wobbly................ 😬 Link to comment Share on other sites More sharing options...
Stationary M25 Traveller Posted December 22, 2008 Author Share Posted December 22, 2008 I realised that decent temperatures were not possible on the road in winter - I was just curious as to what a decent temperature was. Link to comment Share on other sites More sharing options...
Dyrill Posted December 22, 2008 Share Posted December 22, 2008 A Farnell laser non-contact digital thermometer eh? Sounds impressive! What industry uses those as a matter of course then? Supersport 1.8 VVC Link to comment Share on other sites More sharing options...
6speedmanual Posted December 22, 2008 Share Posted December 22, 2008 I believe the best way to measure tyre temp is with a temperature probe which one sticks into the rubber to take the core temp of the compound. The reason for thsi is that the surface of the tyre can cool very quickly due to air circulation whereas the core temperature stays stable for a few minutes after driving dur to the rubber being a poor thermal conductor. here P 6SpeedManual *tongue*There's no such thing as too much BHP per Ton 😬 Link to comment Share on other sites More sharing options...
Stationary M25 Traveller Posted December 22, 2008 Author Share Posted December 22, 2008 Bought it for playing, not for work. Useful for water, oil temps on the cars, together with exhaust primaries, tyres, bearings, brakes, etc ... also setting up central heating radiators to achieve 11C loss from inlet to outlet, etc, etc ....... Only about £30-something I recall. Can buy it on line too. Edited by - Stationary M25 Traveller on 22 Dec 2008 17:17:19 Link to comment Share on other sites More sharing options...
Martin J Posted December 22, 2008 Share Posted December 22, 2008 Blimey Ian, setting up your house radiators with a laser thermometer Me, I just use my hands & years of experience Working in some of the very large houses in the Sevenoaks area, sometimes with more than 30 rads it's nigh on impossible to get them even, just do the best you can. Enjoyed the pictures of your "tinsel blat" yesterday Martin. Link to comment Share on other sites More sharing options...
pjp Posted December 22, 2008 Share Posted December 22, 2008 MJ, I have a maplin digital thermometer, they are on offer at the moment. Much quicker than the MK 1 hand for balancing rads Boycie Link to comment Share on other sites More sharing options...
Martin J Posted December 22, 2008 Share Posted December 22, 2008 Thanks Boycie, will have to check that out. Seem to be running into lots of systems at the moment with sludge & circulation problems. Then I have to broach the subject of powerflushing & what it costs. That often goes down like a lead baloon. Hope your busy but not over Christmas. I've got just Christmas Day off ☹️ Link to comment Share on other sites More sharing options...
elie boone Posted December 23, 2008 Share Posted December 23, 2008 3M also have these thermometers, the ideal tyre temp is about 60 to 80°C for a slick, the colder it is the higher your starting pressure should be ie close to the pressure when the tyre is warm. Link to comment Share on other sites More sharing options...
Mickrick Posted December 24, 2008 Share Posted December 24, 2008 Handy bit of kit those laser red dot jobbies. I used to carry one with me when I was on Engine room watches on "Lone Ranger". Picked up quite a few potential disasters over the years, before they happened. Link to comment Share on other sites More sharing options...
Wight Skipper Posted December 25, 2008 Share Posted December 25, 2008 I know a CAMRA member who uses one to check beer temperatures! 😬 Link to comment Share on other sites More sharing options...
Stationary M25 Traveller Posted December 26, 2008 Author Share Posted December 26, 2008 Had another play after our Christmas Eve blat - fronts .... 18C on the outside of the face, 21C in the middle and 23C on the inside of the face. Link to comment Share on other sites More sharing options...
Ian B Posted December 26, 2008 Share Posted December 26, 2008 Try measuring the tyrewalls Ian, you'll get some surprising results Ian - Slightly Vider SVelte model 😬 Link to comment Share on other sites More sharing options...
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