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May 27th, 2005, 14:57
| #1 |
| Junior Member  Join Date: Feb 2005
Posts: 96
|  Cessna 172 R tire pressure? Does anyone know what the tire pressure is for a Cessna 172 R model or where I can find it? I have searched the POH high and low and don't see anything about it. Thanks for any help. |
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May 27th, 2005, 15:16
| #2 |
| Old Skool  Join Date: Apr 2005 Location: OH or is it MX??
Posts: 4,570
 | Re: Cessna 172 R tire pressure? I was told a good timer pressure is 1% of the total weight, in pounds. So, if aircraft weighs 3500 pounds, then 35 PSI is a good tire pressure. I have not seen anything in writing to confirm this, just my instructor commenting on it when the tires were low on an arrow. |
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May 27th, 2005, 15:20
| #3 |
| Old Skool  Join Date: Jun 2003 Location: Memphis, TN
Posts: 13,667
| Re: Cessna 172 R tire pressure? On the side of the tire? |
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May 27th, 2005, 16:26
| #4 |
| Old Skool  Join Date: May 2004 Location: Dallas TX
Posts: 1,622
| Re: Cessna 172 R tire pressure? [ QUOTE ] On the side of the tire? [/ QUOTE ] Just a note of caution, the PSI on the side of the tire is the max allowed for that tire. A lower pressure may be recomended for best performance by the A/C manufacturer. Same rule goes for cars. |
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May 27th, 2005, 17:51
| #5 |
| Old Skool  Join Date: May 2003 Location: Denver Colorado
Posts: 2,974
| Re: Cessna 172 R tire pressure? [ QUOTE ] Does anyone know what the tire pressure is for a Cessna 172 R model or where I can find it? I have searched the POH high and low and don't see anything about it. Thanks for any help. [/ QUOTE ]It should be in the POH. Don't look in the Systems section; look in the Section 8, Handling Servicing and Maintenance. |
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May 27th, 2005, 19:43
| #6 |
| Junior Member Join Date: Jan 2004 Location: -
Posts: 129
| Re: Cessna 172 R tire pressure? [ QUOTE ] I have searched the POH high and low and don't see anything about it. [/ QUOTE ]Page 8-21 - Landing Gear Nose wheel - 34 PSI Main wheels - 28 PSI Nose gear strut - 45 PSI (unloaded) |
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May 27th, 2005, 22:13
| #7 |
| Senior Member  | Re: Cessna 172 R tire pressure? Just for fun, the minimum speed for dynamic hydroplaning in standing water is nine times the square root of the tire pressure (knots and PSI). E.g., 28 PSI -> 48 knots ground speed. |
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May 27th, 2005, 22:55
| #8 |
| Old Skool  Join Date: Dec 2002 Location: Utopia
Posts: 12,503
| Re: Cessna 172 R tire pressure? [ QUOTE ] Just for fun, the minimum speed for dynamic hydroplaning in standing water is nine times the square root of the tire pressure (knots and PSI). E.g., 28 PSI -> 48 knots ground speed. [/ QUOTE ] I could have sworn that was 8.7 times the square root . . . I could be wrong, though!!  |
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May 28th, 2005, 00:43
| #9 |
| Senior Member | Re: Cessna 172 R tire pressure? Well, after browsing around after I posted (post first, research later!). I found an automotive site that claimed 10.35. There were probably lots of assumptions about tread pattern, runway contamination, how many geese are flying overhead at the time, etc. Or maybe somebody got funding to study the matter, but instead made-up a number and threw a rockin' party with the money. |
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May 28th, 2005, 03:08
| #10 |
| Senior Member  Join Date: Dec 2003 Location: Fresno, CA
Posts: 912
| Re: Cessna 172 R tire pressure? [ QUOTE ] Or maybe somebody got funding to study the matter, but instead made-up a number and threw a rockin' party with the money. [/ QUOTE ] Yeah...that was me...  |
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