CO2 is even smaller. you can fit 2 cartridges, a filler head, a lever, tube and patch kit in a tiny bag.
Three words: No Freakin’ Way.
I had a mini pump that was “rated” to 120psi. One time I had a flat and spent about 1/2 an hour pumping it. I counted 500 strokes, and I’d estimate that I got the tire to around 60psi. Mini pumps are NO GOOD. I switched to C02. I got one of the nozzles with a trigger, so you don’t lose the whole canister when you plug it in, and then I got a box of 25 cartriges at Wal Mart (yes, I hate wal mart, I was told to go there) for $11 (paintball supply section). Can’t go wrong with those prices.
-Colin
Larry, I have a topeak “roadmorph” pump, never gone over about 100 maybe 110 w/ it. The new ones have a gauge, mine does not. I’ve thought about CO2, but then I think back to last year when I stopped to help a dude w/ a semi-slow leak that he hadn’t patched properly the first time. He was out of CO2 and only had about 30lbs left.My pump has a little fold out foot and a hose so you don’t have to worry about ripping off the valve stem either. Take it off for racing, but great for training.
Kevin
.
I was wondering about the Barbieri pumps too. However, I can vouch for the Topeak Road Morph pump, I had it since early 2002, and it is still working like brand new. I actually used it as my main pump for 2 years because I never needed a garage style pump because of it. Tires can be inflated to 120, but the head starts to leak once you reach around that PSI.
Alright, I got numbers: I have an aluminium barrel topeak turbo morph. It’s just as ugly if not more so than a regular pump. it goes about 2/3 the length of my top tube so neither full size nor mini. Regardless, I was able to pump up my tire to 120 psi no problem at which point it got difficult to balance the pump while pushing down hard. Then I put it on my floor pump, and it also said 120 psi. I really like the pump, btw, altho I just shove it into my camelbak. It’s too long and heavy to fit into your jersey pocket. Not sure how the clip-on attachement works. Hope this helps.
Josef
I have a short dual piston hand pump , The large piston fills up to about 70 psi , the smaller about 120 max . Most classic or big $$$ bike like CO2 as the pump covers the down tube logo ( that they paid $$ for ) ,. I can get home on 80- 90 psi wth clinchers , I still like the pumps.
In a pinch I have removed the tube ,and rode home on the flat tire . Since the tube will bunch up to one side of the valve stem.
I’m not doubting that the pumps can reach those pressures, the problem is that its so freaking hard to pump them and your typical cyclist and triathlete (unless your jim from Trizilla) probably wont be able to get enough force into those little things.
If your going to get 140psi out of a pump whose cyclinder diameter is about an inch, you’d have to push with about 109 pounds of force.
The cO2 cylinders are def. the way to go.
Jonathan
Co2 is nice with a multi bike riders , as you are wearing your CO2 & tools most of the time
You are right they are hard to pump , but the two stage pump speeds up the ordeal .
As for Force , a 1" Dia piston = .7854 of area on the flat front side so it would be less than 80 %. but a 1/2 " piston would be manageable at higher pressures .
I will not let G be a group unless you tell me why you hate WalMart–it is your decision.
Hammydad,
…… I’ll think about that little hose you have.
LC
My arms (and willpower) are usually shot, well before the seals on the pump. Maybe 60 PSI, but that’s enough to get home to the track pump.