Tire presure/squishyness

A good tire pressure is whatever keeps you from bottoming out. If you
bottom out, you could damage the rim and are very likely to give
yourself a flat.

[image:
http://www.unicyclist.com/gallery2/main.php?g2_view=core.DownloadItem&g2_itemId=59592&g2_serialNumber=3&g2_GALLERYSID=ea6c26838ad8e4da1be837cf5ba47cea]

The right pressure depends on your weight, the size of the tire, and
how big your drops/hops are.

--
tholub
------------------------------------------------------------------------
tholub's Profile: http://www.unicyclist.com/profile/804
View this thread: http://www.unicyclist.com/thread/52150

a good thing is 1 psi per 10 pounds of weight.

--
mornish

tobbogonist said:

that was neat, now i only have to put it to use.
parents banned my uni due to low school marks so if there are any nerds
out there with a kind heart, i have a psychology assignment that is a
few weeks over due, it is on intelligence.

------------------------------------------------------------------------
mornish's Profile: http://www.unicyclist.com/profile/11658
View this thread: http://www.unicyclist.com/thread/52150

Personally, I like it as low as it'll go without the risk of bottoming
out. You definitely don't want that. My DX got down to about 20 psi
before I had to pump it up a bit...I overdid it just a bit, and now
it's at ~37.

Mornish, are you saying I should have my tire at 15 psi? I weigh 145
lb, and, I started almost-bottoming out at 20 psi...I don' think there
is a set formula for psi...I'm sure there are riders who like it as
pumped up as they can get it...as long as you're comfortable, and
there's no risk of you bottoming out, or your tire popping, you're
good.

--
monkeyman

Alex, MR addict.

THE dave said:

walruses are awesome... they just chill with their tusks and stuff...

sobriquet said:

If this joke were a sandwich it would be the wurst.

------------------------------------------------------------------------
monkeyman's Profile: http://www.unicyclist.com/profile/11455
View this thread: http://www.unicyclist.com/thread/52150

oh yea, that's for trials unis or munis. it works for me and most of my
friends.

just pump it up until it feels good.

--
mornish

tobbogonist said:

that was neat, now i only have to put it to use.
parents banned my uni due to low school marks so if there are any nerds
out there with a kind heart, i have a psychology assignment that is a
few weeks over due, it is on intelligence.

------------------------------------------------------------------------
mornish's Profile: http://www.unicyclist.com/profile/11658
View this thread: http://www.unicyclist.com/thread/52150

yeah, I think mornish's formula is pretty good, but it probably depends
on how wide your tire is. on my 2.5" tire, I like it at 15psi and I'm
130 pounds.

--
onelesscar

mmm...i love my qu-ax...and now my kh 20...
------------------------------------------------------------------------
onelesscar's Profile: http://www.unicyclist.com/profile/11127
View this thread: http://www.unicyclist.com/thread/52150

on my KH trials I have it at about 6-7 psi and I weigh about 70 pounds.
I don't bottom out much except on pointy objects.

--
mornish

tobbogonist said:

that was neat, now i only have to put it to use.
parents banned my uni due to low school marks so if there are any nerds
out there with a kind heart, i have a psychology assignment that is a
few weeks over due, it is on intelligence.

------------------------------------------------------------------------
mornish's Profile: http://www.unicyclist.com/profile/11658
View this thread: http://www.unicyclist.com/thread/52150

mornish said:

on my KH trials I have it at about 6-7 psi and I weigh about 70 pounds.
I don't bottom out much except on pointy objects.

wow, thats like nothing, lately I've been riding w/ 50 lbs and my tire
almost bottomed out when I didn't feel like doing a roll out off of a
4' drop

--
skrobo

Quoted message said:

<> Unicycle For Christ <>< PM me if you would like to join!!!

-stephen-
------------------------------------------------------------------------
skrobo's Profile: http://www.unicyclist.com/profile/12272
View this thread: http://www.unicyclist.com/thread/52150

mornish said:

on my KH trials I have it at about 6-7 psi and I weigh about 70 pounds.
I don't bottom out much except on pointy objects.

:eek:

its all personal preference

--
unijesse

They put on panda suits and then pretend they're milking a cow. It's
art. You wouldn't get it.

Quoted message said:

<> Unicycle For Christ <><

------------------------------------------------------------------------
unijesse's Profile: http://www.unicyclist.com/profile/10868
View this thread: http://www.unicyclist.com/thread/52150

An extension of mornish's idea
just pump it up until it feels...hard but you can still squeeze it
slightly

^^for trials annyway^^

a dude in an extreme sports shop told me this 🙂

P.A.Z

--
sparrowhawk
------------------------------------------------------------------------
sparrowhawk's Profile: http://www.unicyclist.com/profile/11813
View this thread: http://www.unicyclist.com/thread/52150

mornish said:

a good thing is 1 psi per 10 pounds of weight.

Expressed like that, it's easy to see that that gives you a 10 square
inch static contact patch (minus some because of sidewall stiffness).
The weight should be total weight, including unicycle and other gear.

Klaas Bil - Newsgroup Addict
--
"I'm slowly but surely stealing Wales and bringing it back to my house on the wheel, frame and cranks of my muni. - phil"

my unicycle says on the wheel 35-50 psi or something in that range. it
was pumped up to 50 when i got it and i swear i jumped down one step
and it felt like i had no tire, i just landed on the posts 😄 it was SO
hard. anyway i let the air out to 35 but it was still practically
impossible to ride. i let out more to 20 and it was better but still
hard to jump with. i let out more air, this time without a gauge, but i
ended up bottoming out way too much so i took it someplace and it
turned out to be at 10 psi. i had it pumped up to 15 which is working
for me right now. i guess it's all preference. i liked it at 10 because
i could jump so high with so little effort but it bottomed out way too
much and i didn't want to damage my rim. oh for the record i weigh
about 100 lbs.

--
unitoon
------------------------------------------------------------------------
unitoon's Profile: http://www.unicyclist.com/profile/12011
View this thread: http://www.unicyclist.com/thread/52150

I guess I'm just fat.

🙁 🙄

--
monkeyman

Alex, MR addict.

THE dave said:

walruses are awesome... they just chill with their tusks and stuff...

sobriquet said:

If this joke were a sandwich it would be the wurst.

------------------------------------------------------------------------
monkeyman's Profile: http://www.unicyclist.com/profile/11455
View this thread: http://www.unicyclist.com/thread/52150

The 1psi per 10 pounds seems to be a good general idea for wide tires...
I'm 220 and have about 23psi in my 24x3. BUT.... a narrow tire will
require more air. Riding on the 24x2 on my other uni I need at least
35psi, and more like 40-45.

--
Racenut
------------------------------------------------------------------------
Racenut's Profile: http://www.unicyclist.com/profile/11339
View this thread: http://www.unicyclist.com/thread/52150

monkeyman said:

I guess I'm just fat.

🙁 🙄

FATTY

--
dudewithasock

'My Unicycling Journal'
(http://www.unicyclist.com/forums/showthread.php?t=44950)
officially ended.
😎

trials_uni said:

Ha Quebec...Is that place still there?

------------------------------------------------------------------------
dudewithasock's Profile: http://www.unicyclist.com/profile/10900
View this thread: http://www.unicyclist.com/thread/52150

monkeyman said:

I guess I'm just fat.

🙁 🙄

me too..
185 pounds..

i think i cant ride with only 18 psi..

i normaly ride with 20-25

--
picado

###unicycle for JAH RASTAFARI###

One wheel in brazil
------------------------------------------------------------------------
picado's Profile: http://www.unicyclist.com/profile/11964
View this thread: http://www.unicyclist.com/thread/52150

I think 30 is about good for me. I'm 'bout 185 and I bottomed out hard
doing a 5 set when it was at 20psi. thanks for your help guys and girl

--
Radical Reed

sorry cheese lovers your outa my sig
'sixsixone' (http://www.sixsixone.com/)
' .' (http://nickciske.com/tools/binary.php)
'LBS' (http://www.mbps.ca/)
------------------------------------------------------------------------
Radical Reed's Profile: http://www.unicyclist.com/profile/10427
View this thread: http://www.unicyclist.com/thread/52150

6-7psi mornish omg thats insane. :eek:

I can barley stand 35psi it just so squishy and takes so much more
energy to jump. I run at 40 and am thinking about going to 45. It's
soo much easier for me to jump with high pressure. Landing is rough
but I just learned to roll out and it's fine😄

--
Joe2005

*Come To The Dark Side* we have cookies.
Anyone in the Wichita area give me a hollar😎
------------------------------------------------------------------------
Joe2005's Profile: http://www.unicyclist.com/profile/13692
View this thread: http://www.unicyclist.com/thread/52150

mornish said:

a good thing is 1 psi per 10 pounds of weight.

No....You run your tires like that because its the only way you can
muster a mediocre hop.

--
Evan Byrne
------------------------------------------------------------------------
Evan Byrne's Profile: http://www.unicyclist.com/profile/9367
View this thread: http://www.unicyclist.com/thread/52150

Evan Byrne said:

No....You run your tires like that because its the only way you can
muster a mediocre hop.

I can tuck now!

I'm now running around 13 or 14 psi. my tire is all hard.

--
mornish

ivan said:

I believe in the Invisible Pink Unicorn.

mscalisi said:

wait...invisible AND pink?

'please... help save flightline'
(http://www.rideflightline.com/save_the_trails.html)
msn: mornish AT gmail DOT com
aim: kiloornish
email: mornish AT gmail DOT com
------------------------------------------------------------------------
mornish's Profile: http://www.unicyclist.com/profile/11658
View this thread: http://www.unicyclist.com/thread/52150