Tube Dramas?

Scott Blanch said:

Why is it that whenever I try to pump up my tyres with my hand pump I almost
alway rip the valve out of the tube. Is it just because I am ham fisted or
is there a technique to it.

The Topeak Road Morph is only slightly larger than a hand pump but has a
gauge, hose (no mashing the valve), and converts to a mini-floor-pump.
Frame-mountable too.

Can anyone here actually get 120psi out of a hand pump?

-- CH

quote='CH'Scott Blanch said:

Why is it that whenever I try to pump up my tyres with my hand pump I almost
alway rip the valve out of the tube. Is it just because I am ham fisted or
is there a technique to it.

The Topeak Road Morph is only slightly larger than a hand pump but has a
gauge, hose (no mashing the valve), and converts to a mini-floor-pump.
Frame-mountable too.

Can anyone here actually get 120psi out of a hand pump?

-- CH[/QUOTE]
takes a sodding lot of effort to get up to 120psi.

I went thryu a stage of ripping the heads of valves, but soon got the knack. basically you have to work against something. your hand on the other side is OKish as long as you concentrate on keeping that valve stable/motionless. if you can ge the pump-head working up against a solid surface (say the curb for eg) it works a treat and you can really put your shoulder into it

Giyo ( who incidently make for most of the top brands) make an excellent
road mini pump, it is a slim black aluminium design around 30cm long & has a
schrader adaptor in the handle , sell for around $35 & is the only mini pump
I sell with confidence for the road bike's higher pressures.
Steve @ IDEAL

"flyingdutch" <[email hidden]> wrote in
message news:[email hidden]...

Quoted message said:

CH said:

Scott Blanch said:

Why is it that whenever I try to pump up my tyres with my hand pump I

almost

Quoted message said:

alway rip the valve out of the tube. Is it just because I am ham

fisted or

Quoted message said:

is there a technique to it.

The Topeak Road Morph is only slightly larger than a hand pump but has
a
gauge, hose (no mashing the valve), and converts to a mini-floor-pump.
Frame-mountable too.

Can anyone here actually get 120psi out of a hand pump?

-- CH

takes a sodding lot of effort to get up to 120psi.

I went thryu a stage of ripping the heads of valves, but soon got the
knack. basically you have to work against something. your hand on the
other side is OKish as long as you concentrate on keeping that valve
stable/motionless. if you can ge the pump-head working up against a
solid surface (say the curb for eg) it works a treat and you can really
put your shoulder into it

--
flyingdutch

Scott Blanch said:

Why is it that whenever I try to pump up my tyres with my hand
pump I almost alway rip the valve out of the tube. Is it just because
I am ham fisted or is there a technique to it.

I usually pump the tyre up while the wheel's still out of the bike. Hold the wheel off the ground with the pump, and hold one end of the pump in one hand and pump with the other. That way you can't put excess force on the valve.

Regards,

Suzy

quote='suzyj'Scott Blanch said:

Why is it that whenever I try to pump up my tyres with my hand
pump I almost alway rip the valve out of the tube. Is it just because
I am ham fisted or is there a technique to it.

I usually pump the tyre up while the wheel's still out of the bike. Hold the wheel off the ground with the pump, and hold one end of the pump in one hand and pump with the other. That way you can't put excess force on the valve.

Regards,

Suzy[/QUOTE]
120psi? Zefal HpX 4 - King of road going pumps! (well, alright, only once, when I was rushing to get to the startline of a race and realised that everyone else had locked their cars with their trackpumps inside and and I had forgotten mine and my tyres were a bit, well, a lot flat). But seriously, the nobbly chuck end makes a great impression on psychotic yappy dogs and magpies, as well. I've got a Giyo double-action minipump that can put 90psi in with a little effort. Found it on the side of the road.

M"fssht" H

mfhor said:

120psi? Zefal HpX 4 - King of road going pumps! (well, alright, only once, when I was rushing to get to the startline of a race and realised that everyone else had locked their cars with their trackpumps inside and and I had forgotten mine and my tyres were a bit, well, a lot flat). But seriously, the nobbly chuck end makes a great impression on psychotic yappy dogs and magpies, as well. I've got a Giyo double-action minipump that can put 90psi in with a little effort. Found it on the side of the road.

M"fssht" H

Yeah, I have the same Zefal pump, and I pump my tyres to 120 psi plus everytime I go for a spin. It still has a lot to go, I think I could achieve the 160 psi they say the pump is capable of. This pump sits at home. On the road I have a mcAir from Silca. 54 grams, and they claim it can do 90 psi, have not had to try yet.

I have the topeak digital gauge to measure the pressure, and it works ok with some tubes, and their valves, works [censored] with others. Weird.

Scott Blanch said:

Why is it that whenever I try to pump up my tyres with my hand pump I almost alway rip the valve out of the tube. Is it just because I am ham fisted or is there a technique to it.

You are doing something wrong. Concentrate on NOT moving the
valve around when you pump.

I punctured again last night!!! Arrr!!
(see: http://www.thehippy.net/nucleus/)

and the new Axiom Air Supply pump I have worked a treat!

It's one of those longer, skinny, frame pumps rated to 160psi that
doesn't require a stupid valve clamp mechanism. You just push it onto
the valve and start pumping (the tyre up!).

hippy

"hippy" <[email hidden]> wrote in message
news:[email hidden]...

Quoted message said:

Scott Blanch said:

Why is it that whenever I try to pump up my tyres with my hand pump I
almost alway rip the valve out of the tube. Is it just because I am ham
fisted or is there a technique to it.

You are doing something wrong. Concentrate on NOT moving the
valve around when you pump.

I punctured again last night!!! Arrr!!
(see: http://www.thehippy.net/nucleus/)

and the new Axiom Air Supply pump I have worked a treat!

It's one of those longer, skinny, frame pumps rated to 160psi that
doesn't require a stupid valve clamp mechanism. You just push it onto
the valve and start pumping (the tyre up!).

hippy

--
hippy

Yes same $35 pump as I mentioned previously a Giyo Gf2 with different
labelling.
Steve @ IDEAL

Quoted message said:

Scott Blanch said:

Why is it that whenever I try to pump up my tyres with my hand pump I almost
alway rip the valve out of the tube. Is it just because I am ham fisted or
is there a technique to it.

1) Try hooking your thumb over the tyre to give your other hand
something to brace against.

2) Work the pump holding hand so it opposes the the pump stroke.

3) Reduce the force that you are pumping with. A smaller diameter pump
might help.