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Topic: PSI

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essential

08/9/2009 at 9:33pm
Location: Newcastle
Outfit: Award Northstar

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Anyone, I have an Award Northstar 4 berth single axle, not sure what the correct tyre pressure should be. One site worked it out at 54psi, seems slightly high. Look forward to your help with this prob.

essential

michael

08/9/2009 at 10:10pm
Location: Lancashire
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depends on weight of caravan and size and type of tyre

http://www.tyresafe.org/data/files/caravan%2008.pdf

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the only silly question is the one you do not ask.

digisatman

09/9/2009 at 11:55am
Location: Royal Wootton Bassett
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Read of the side of the tyre

Max PSI & Max weight

PSI is divided Weight IE 65psi / 1350kg = 0.048 then multiply by by true vans weight 0.048 X 1250kg = 60 PSI

essential

09/9/2009 at 3:05pm
Location: Newcastle
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Thank you both, will do the sums later when I have more time. ill let you knoe the result.

essential

david8858

09/9/2009 at 6:09pm
Location: Teesside
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If it helps manufacturer recommends 54psi for a Bailey single axle with MTPLM of 1445Kg

D

digisatman

09/9/2009 at 6:28pm
Location: Royal Wootton Bassett
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Dave it depends on tyre, on mine a coachman VIP 520/4 states 175 X 13 6 ply where 54psi is correct, but if using a 8 ply 60psi would be correct. That why the maths way is correct & not the book.

david8858

09/9/2009 at 7:04pm
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I was only trying to give a point of reference not a definitive value. Rule of thumb is often a fair guide i.e. if it 'feels' about right it probably is.

He would be wise to follow your advice as the subject matter expert.

D

digisatman

09/9/2009 at 8:30pm
Location: Royal Wootton Bassett
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It was only thanks to earlier advice from this site, from the likes of Gary & Wizard that I can make that statement

essential

11/9/2009 at 2:41pm
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Right info on tyre max weight 1740 at max of 64 psi which gives a figure of 0.037 and true weight of van is 1400, so this calculation results in 51.8 psi.

Have I done the calculation right?

essential

digisatman

11/9/2009 at 8:58pm
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True weight does that include all your bits, ie clothes awning food ect if yes then 51.8 is ok.

If the van true weight is 1400, add the extra weight and redo sum.

essential

12/9/2009 at 7:45pm
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yes the 1400 true weight includes the 263 allowance for extras, but will try adding it on to the 1400 and see what thet number is!

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