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BigJimny Meet 2019 (17 May 2019)

BigJimny Meet and off-road driving day



20TH OCTOBER 2019

BOOKING NOW CLOSED


If you have booked you will shortly receive joining instructions- See HERE for discussion


Noggin and Natter - pre-event chat - Old Bell at Grazeley (part of hotel) 7:30pm 19th October

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Andy's 2019 Blue SZ5

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01 May 2019 06:43 #207042 by Lambert
Replied by Lambert on topic Andy's 2019 Blue SZ5
Except that that doesn't take into account the potential differences in tyre construction which affect the ability to carry weight at different pressures. Hence working it out from the specific information off the side of the tyre.

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01 May 2019 07:19 - 01 May 2019 07:22 #207046 by Andy2640
Replied by Andy2640 on topic Andy's 2019 Blue SZ5

Lambert wrote: Except that that doesn't take into account the potential differences in tyre construction which affect the ability to carry weight at different pressures. Hence working it out from the specific information off the side of the tyre.


I think I get this now.

Its like this > (I THINK) If we had two rubber cubes (both rated at 30psi) The first is 1m by 1m. And we also have the other rubber cube 2m by 2m. Whilst the 2 by 2 would require more air (volume), they would both need to be under pressure of 30PSI.??


That melted my brain.

A wise man once said...... When we are Mean, Shout at People, Lose our Tempers, Swear, and generally act like Tool Bags, Never forget ..... We are all Cavemen in Suits, Uniforms and/or Overalls ..... Living in Semi-Concrete Jungles. Andy - 2019 AD.
Last edit: 01 May 2019 07:22 by Andy2640.

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01 May 2019 07:31 #207047 by Lambert
Replied by Lambert on topic Andy's 2019 Blue SZ5
Essentially yes.

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01 May 2019 07:32 #207048 by Lambert
Replied by Lambert on topic Andy's 2019 Blue SZ5
Think of it like this....


Because, science.

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01 May 2019 07:53 - 01 May 2019 07:54 #207049 by Bill Portland
Replied by Bill Portland on topic Andy's 2019 Blue SZ5
on the way into work this morning I checked the TPMS readings and they were 27, 27, 28 and 29 psi. Original tyres. Not sure how accurate the TPMS system is so I'll need to check them against manual readings, but the TPMS works with warm tyres so I guess they're probably around the 25-26psi mark cold.
Last edit: 01 May 2019 07:54 by Bill Portland. Reason: added comment re standard tyres
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01 May 2019 09:18 #207055 by Guy 2
Replied by Guy 2 on topic Andy's 2019 Blue SZ5
Sat here on a mini-break in Devon, and reading these posts (I know!), I am thinking of nominating you Lambert for the "Fritz Zwicky" Award for abstruse (but accurate) science; George for the "Aussie Boomerang" Prize (He goes away but always comes back); and possibly Bill for the "Stuff-it, That'll do" Cup. (No offence, Bill!)
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01 May 2019 09:22 - 01 May 2019 09:29 #207056 by GeorgeC
Replied by GeorgeC on topic Andy's 2019 Blue SZ5

Bill Portland wrote: On the way into work this morning, I checked the TPMS readings and they were 27, 27, 28 and 29 psi. Original tyres. Not sure how accurate the TPMS system is so I'll need to check them against manual readings, but the TPMS works with warm tyres so I guess they're probably around the 25-26 psi mark cold.

That is most comforting to see the subtle pressure differences as TPMS compares the Rolling Radius of all four wheels. The load on each wheel is slightly different due to the various weights of engine, driver, fuel, tools, personal stuff, etc, so the pressure in each tyre is slightly different to maintain the same rolling radius.

"Nobody expects The Spanish Inquisition."
www.aveoforum.com/forum/f118/seniors-jim...-suzuki-jimny-23477/
Last edit: 01 May 2019 09:29 by GeorgeC. Reason: typos

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01 May 2019 09:33 #207058 by Guy 2
Replied by Guy 2 on topic Andy's 2019 Blue SZ5
'Tongue in Cheek', George? TPMS in my BM is wildly inaccurate and only good for telling me if a tyre is actually deflating - which, in fairness, it was useful for once, but only once.

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01 May 2019 11:37 #207063 by Bill Portland
Replied by Bill Portland on topic Andy's 2019 Blue SZ5
when i get home this evening i'll compare the actual pressures against what the TPMS says and post the results
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01 May 2019 12:37 #207069 by Lambert
Replied by Lambert on topic Andy's 2019 Blue SZ5

Guy 2 wrote: Sat here on a mini-break in Devon, and reading these posts (I know!), I am thinking of nominating you Lambert for the "Fritz Zwicky" Award for abstruse (but accurate) science; George for the "Aussie Boomerang" Prize (He goes away but always comes back); and possibly Bill for the "Stuff-it, That'll do" Cup. (No offence, Bill!)


Abstruse. Ok I'll take that. Because, science!

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01 May 2019 16:04 - 01 May 2019 16:15 #207070 by GeorgeC
Replied by GeorgeC on topic Andy's 2019 Blue SZ5

Guy 2 wrote: Sat here on a mini-break in Devon, and reading these posts (I know!),
I am thinking of nominating you Lambert for the "Fritz Zwicky" Award for abstruse (but accurate) science;
George for the "Aussie Boomerang" Prize (He goes away but always comes back);
and possibly Bill for the "Stuff-it, That'll do" Cup. (No offence, Bill!)

Thank You Guy!
That now makes two "Aussie Boomerang" Prizes!
The first was after two years in Jersey, at the conclusion of the job!
However, I must share the credit for my latest absence. ;)

Oh yes, on the BMW, I had heard they suffered from T-PMS!

"Nobody expects The Spanish Inquisition."
www.aveoforum.com/forum/f118/seniors-jim...-suzuki-jimny-23477/
Last edit: 01 May 2019 16:15 by GeorgeC. Reason: BMW

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01 May 2019 19:56 - 01 May 2019 19:57 #207081 by Bill Portland
Replied by Bill Portland on topic Andy's 2019 Blue SZ5
The tpms seems pretty accurate.

It's readings were 27, 27, 28 and 29 warm and I've just checked them, cold, at 26, 26, 28 and 28. I've reset them all to 26psi
Last edit: 01 May 2019 19:57 by Bill Portland.
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