Tire touches rim when I jump. NEED HELP!

inflate it so it squishes alittle bit. enough to propell you throught
the air, but not to much or then you wont be able to jump. soo when you
sif, your still gonna want to inflate it more... the only reason you
dont THINK its touching rim is because you dont notice it.

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bottom out your tyre enough and you will get a snake-bit puncture, do it
some more and you will knock your wheel out of shape. Your tyre
pressure should be enough that you never hit the rim in the course of
your normal riding.

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kington99 said:

Your tyre pressure should be enough that you never hit the rim in the
course of your normal riding.

that's the thing, when I ride regularly, I don't hi the rim.

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hungry4uni said:

that's the thing, when I ride regularly, I don't hi the rim.

So what's the question? You have already found the perfect mix for
yourself.

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Then take a pump around with you and change the typre pressure according
to whatever you're doing - problem solved.

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thanks to joe2005, I now know that when I do my regular riding, I don't
hit the rim, so no problem.

but I have one more questions,

1) the only time I might risk hitting the rim on my unicycle is when i
do a freakishly large drop, does that happen to anybody?
What I'm thinking I should do in that case is just increase my tire
pressure before I do the drop.

What say you?

Also, where can I find out what my tire pressure is? My pump doesn't
tell you the psi.

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hungry4uni said:

What I'm thinking I should do in that case is just increase my tire
pressure before I do the drop.

Kinda like I just said...

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I tell u wat they would have to be a very commited pedo to learn to ride
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also, when I do a pre hop before a SI hop, my tire barely (but does)
touch the rim, should I inflate my tire. Keep in mind, I don't normally
do a big prehop before a *SI*

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hungry4uni said:

also, when I do a pre hop before a SI hop, my tire barely (but does)
touch the rim, should I inflate my tire.

Inflate it gradually until it doesn't touch the rim.

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I tell u wat they would have to be a very commited pedo to learn to ride
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would somebody post a picture of how much their tire deflates when they
do a big jump

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I think that may be a bit tricky, to be honest... Just pump your tyre up
so the rim doesn't hit the ground on drops, then let it down after if
you want.

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I tell u wat they would have to be a very commited pedo to learn to ride
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here's the thing,

I don't know if what I'm feeling is the tire hitting the rim, or just a
big rebound of the jump.

When I just went outside, I jumped with as much force as I could and I
got massive air, but I'm not sure I'f my rim hit the ground. It felt
like it might've hit but I also think it was just a rebound.

Now, regularly, I wouldn't pound as hard. But I just can't tell whether
or not my uni's rim hits the ground.

If it barely hits the rim, will the rim break?

Am I worrying to much😕 😕 😕 😕
😕

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jamessd said:

I think that may be a bit tricky, to be honest... Just pump your tyre up
so the rim doesn't hit the ground on drops, then let it down after if
you want.

That's it right there. PSI numbers mean nothing, and a picture of the
tire, if you could get it at the exact moment, which would be cool,
would not be very useful. You can feel if/when your rim is hitting the
ground and that's what you have to avoid. The amount of pressure
required to do that is not something anyone can know because it depends
on your exact tire, rim, rider weight, temperature, altitude and how
hard you jump/land.

So keep a pump nearby, and adjust as needed. With some practice you'll
have a pretty good idea of what you need most of the time. Also it's
better to put in more air than you need when pumping, then lower it to
suit. Easier than pumping over and over...

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but what i'm asking is, how to you know whether the impact your feeling
is a rebound or the rim hitting the ground?

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Well, you could ask someone to watch you do it and they will tell you.

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Kieron said:

I tell u wat they would have to be a very commited pedo to learn to ride
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if you are rimming hard enough to do damage (no jokes please) you will
feel it as a sudden jolt where you suddenly stop moving down any
further. Maybe try letting your tyre right down and doing it gently on
purpose to see what I mean. It seems like your options are: pump it up
for big drops, leave it pumped up enough for big drops all the time, or
don't do big drops. If you're going to keep going up and down a tyre
presure gauge would be really helpful so you don't need to go through
trial and error every time.

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Do a small hop up w/ low pressure to make sure you are feeling the right
thing, then up the pressure by 5 psi untill you don't feel it anymore.
Then reapeat w/ bigger hops up, and do the same w/ drops starting w/
smaller ones.

This should give you an idea how much you need for different
situations. It's better to err on a bit too much pressure so you don't
damage your rim.

I carry around a compact pump and a digital air pressure guage that
give readings down to .5 psi. (not that I really need it that accurate,
but it's helpfull on my air seat😎 ).

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Ok, you already know what it feels like when you bottom out, so its
gonna feel about the same everytime.

Right now you are at the point where if you are regular riding, you are
fine, but, if you put a decent force of a prehop down, you hit the rim.
Now when you start doing bigger drops, not freakishly large, but around
4-5 feet, you will hit the rim.

So, just pump it up one or two more pumps from where you are at now.

John said PSI doesnt matter, and thats partially true. For me, for my
tire, rim, my weight and how I ride, I do have a PSI number. It took a
while to find it, cause I do a lot of drops, so I had to mess with a
lot of pressure to still have bounce, and still be able to hold up to
large drops, but I found it easily, and

Finding your point is very easy. Fill your tire up hard, then gradually
let small amounts of air out untill you arent bottoming out, and you
still have bounce.

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