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+--- Thread: Tire pressure in gravel (/showthread.php?tid=1248)
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Tire pressure in gravel - Streetshark07_imp - 11-15-2018
Sorry, but lazy American here and I have just ONE question. Which is better on a gravel hill, parked outside a hut, here at Area X.
I'm not sure if I want high (full) pressure or less or MORE!
I don't lack for miles (60k+), but knowledge!!!!
Thank you in advance!
-StreetShark
RE: Tire pressure in gravel - alprider - 11-16-2018
my big problem is still, at what time i should change the old air.......
and what is better summer-air if i drive often in winter or always fresh spring mountain air for all seasons....
RE: Tire pressure in gravel - Houtman_imp - 11-16-2018
The best air is the Honda air from Japan , all their bikes were tested with Japanese air. You can get it direct from Japan in air tight containers. ( It is not cheap )
RE: Tire pressure in gravel - the Ferret - 11-16-2018
Must be winter
Tire pressure in gravel - Retsel_imp - 11-16-2018
With helium, instead of plain air, you no longer require roads or even trails!
Sent from my SM-T710 using Tapatalk
RE: Tire pressure in gravel - Streetshark07_imp - 11-16-2018
I asked, because the last time I chose to ride to work, it was very tough to back down the slight gravel incline from the hut.
Also, nitrogen can sometimes be chosen, but helium is a joke!!!
RE: Tire pressure in gravel - peterbaron - 11-16-2018
(11-16-2018, 02:25 AM)Houtman_imp Wrote: The best air is the Honda air from Japan , all their bikes were tested with Japanese air. You can get it direct from Japan in air tight containers. ( It is not cheap )
I already have one
RE: Tire pressure in gravel - GoldOxide_imp - 11-16-2018
SS7: Not sure if the forum is gonna get around to answering your question. I tink we are all pretty lazy.
RE: Tire pressure in gravel - fritzwilliger_imp - 11-16-2018
(11-15-2018, 03:16 PM)Streetshark07_imp Wrote: Sorry, but lazy American here and I have just ONE question. Which is better on a gravel hill, parked outside a hut, here at Area X.
I'm not sure if I want high (full) pressure or less or MORE!
I don't lack for miles (60k+), but knowledge!!!!
Thank you in advance!
-StreetShark
Generally speaking, when you are traversing over gravel, especially for long stretches, you will find that the "feel of the wheel" (handling) will be more certain with a LOWER tire pressure. The challenge, of course, would be how to reinflate to a higher tire pressure once back on hard-surfaced roads, especially if there is no air pump at a nearby gas station available.
The reason for lowering the tire pressure, by say as much as 3-5 PSI or perhaps even more, is reasonably straightforward. A higher tire pressure creates a "harder" tire tread surface so that the tire is effectively "pushing loose gravel around," thereby contributing to more uncertain handling characteristics. A lower tire pressure provides a "softer" tire tread surface so that the tire is better able to conform to the irregular gravel surfaces encountered without displacing the gravel as much, thereby leading to less slippage and uncertain "feel." BTW, this lowering of tire pressure is the same technique used by dune buggy operators (on Cape Cod, for example) when they drive over loose sand (a granular-sized version of gravel).
Hope this helps!
-fritz
RE: Tire pressure in gravel - GoldOxide_imp - 11-16-2018
Don't forget to restore the pressure when you clear the gravel hill.