CHANGE OF RUNFLATS TO NON RUNFLATS

[flybobbie]

When to check tyre pressure when atmospheric pressure is high or low?

[enuff_zed]

When to check tyre pressure when atmospheric pressure is high or low?

Oh that would depend on the coefficient of friction of the road you're going to use.

[Pbondar]

When to check tyre pressure when atmospheric pressure is high or low?

I’m surprised as an aviator that you throw that one in..1013 hecto pascals

[sars]

When to check tyre pressure when atmospheric pressure is high or low?

When the conditions are ambient silly

I’m surprised as an aviator that you throw that one in..1013 hecto pascals

hectoPascals, brilliant, where did you drag that one up from

and you’ve have unwittingly done one of my pet hates in my industry, standard convention is the bar, psi or if you want to be proper it’s the MPa (or if you are a real gimp kg/cm2) however calculating anything with pressure in the equation it is always absolute. So my pet hate is peeps writing barg or psig to indicate that it’s gauge pressure, duh all measured pressure is gauge so it’s just bar or psi or Pa, if it’s atmospheric the SI convention is to state the units as bar (abs) thus: - it is 1013 hecto Pascals (abs)

[Argyll Andy]

When to check tyre pressure when atmospheric pressure is high or low?

When the conditions are ambient silly

I’m surprised as an aviator that you throw that one in..1013 hecto pascals

hectoPascals, brilliant, where did you drag that one up from

and you’ve have unwittingly done one of my pet hates in my industry, standard convention is the bar, psi or if you want to be proper it’s the MPa (or if you are a real gimp kg/cm2) however calculating anything with pressure in the equation it is always absolute. So my pet hate is peeps writing barg or psig to indicate that it’s gauge pressure, duh all measured pressure is gauge so it’s just bar or psi or Pa, if it’s atmospheric the SI convention is to state the units as bar (abs) thus: - it is 1013 hecto Pascals (abs)

Sars, if I put that int Google translate is there any chance I’ll understand it any better

You changed the colour order for your G29 yet?

[sars]

No it’s still red my last BMW was blue and I really wanted something different and I haven’t had a red convertible since my 74 MGB Roadster

[Pbondar]

SARS…for the International Civil Aviation Organisation (ICAO). The reference point for all pressure settings is hecto pascals …shortened to hPA previously it was milli bars..or inches (of mercury) in USA

You can have a standard reference 1013 which is what you set your altimeter to when flying flight levels..eg FL230 or

If you want to be able to land when your altimeter shows zero then you set QNH which is pressure adjusted to your point on the earth at this exact point in time or you can have QNH which is pressure altitude set so that sea level (average) would read zero on your altimeter (if you landed on the sea)

When we move back to tire pressures we should in aviation correct back to ISA..ie a pressure of 1013 hecto pascals and a temperature of 15c

Any variation in pressure or temp should then be subject to a correction factor based on the physical characteristics of the object in question

See this as a working example…. https://publicapps.caa.co.uk/docs/33/Sa ... 014004.pdf

[sars]

So all that copying and pasting to tell me it’s used in the in aviation industry

[Pbondar]

So all that copying and pasting to tell me it’s used in the in aviation industry

No copying and pasting required …30+ years in aviation…15 as head of continuing airworthiness amongst many aviation posts held..

[sars]

So all that copying and pasting to tell me it’s used in the in aviation industry

No copying and pasting required …30+ years in aviation…15 as head of continuing airworthiness amongst many aviation posts held..

So in your industry, that is aviation, all pressures are atmospheric, excepting the ones you have in your tyres

[Pbondar]

So all that copying and pasting to tell me it’s used in the in aviation industry

No copying and pasting required …30+ years in aviation…15 as head of continuing airworthiness amongst many aviation posts held..

So in your industry, that is aviation, all pressures are atmospheric, excepting the ones you have in your tyres

If you fly an Austrian built plane under CAA rules you have just about every possible unit of measure accept firkins, poles and perches..

[N4LLY]

Sorry ! What was the question ?

[Pondrew]

Sorry ! What was the question ?

The original question was (IIRC) whether tyre pressures should be adjusted for non-RF tyres over the recommended for RFTs.
The answer is NO.
Then a forum member proceeded to try to stamp their authority over all things technical relating to the E89 and thus ensued a discussion which no-one cares about. Said member was then brought to task by people with more knowledge but refused to surrender to superior knowledge and dug themselves a bigger hole. That's how I see it anyway

Even though the said member is in charge of airworthiness of all aircraft in the whole world; which is a bit of a worry

PS no offence intended or inferred, it's all in good humour

[SV8Predator]

Then a forum member proceeded to try to stamp their authority over all things technical relating to the E89 and thus ensued a discussion which no-one cares about.

Seems to happen regularly with this technical god I'm afraid.