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Old 07-11-2004, 11:02 AM   #1
2centz
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Question Air pump?

Anybody have good suggestions on an air pump for tires? I'm not sure if I should go the 12V route or go for those foot operated pumps. Also, if I went the cigarette lighter route, it's not 12V DC, right?

thanks!
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Old 07-11-2004, 11:21 AM   #2
DrD
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Default Re: Air pump?

Quote:
Originally posted by 2centz
if I went the cigarette lighter route, it's not 12V DC, right?
Pretty much all of the power leads you have easy access to on a car are 12V DC...

if you are just adjusting pressure a little bit this way or that (5-10lbs) anything is fine - I use a bike pump
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Old 07-11-2004, 09:52 PM   #3
2centz
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Hey, if a bike pump works, that's fine with me! It's definitely a cheaper solution.
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Old 07-11-2004, 10:08 PM   #4
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A decent bike pump works fine. Mine is like about 5-10 pumps per psi.
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Old 07-11-2004, 10:30 PM   #5
2centz
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What do you mean by a decent bike pump?
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Old 07-12-2004, 02:40 PM   #6
kenchan
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I use a 12v aircompressor ($25 at Autozone?) and a 12v
power supply (was used for my RC car battery charger back
in the days...) in my garage to pump the tires up.

It can do about 1psi in 10sec...so not too bad.

Yes, the cigarette lighter output is DC, but my air compressor
can work either polarity.
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Old 07-12-2004, 03:14 PM   #7
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Quote:
Originally posted by 2centz
What do you mean by a decent bike pump?
You want one meant for volume. Otherwise it could quite literally take you days to pump up a tire. Some tiny little handpumps are like this. They're fine for adjusting a bike tire, but would be murder trying to do a car tire. Even if it's not a big car tire it's many times greater than that of any bike.
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Old 07-12-2004, 03:34 PM   #8
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Thanks I'll stay away from the hand pumps then <as he surreptitiously sneaks the hand pump behind his back>. Joking of course, since the hand pump I have takes a long time to get my bike tires filled up.
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Old 07-12-2004, 03:42 PM   #9
JT Clark
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Yeah, if it takes long on your bike it'll be like 10x worse on a car tire. A lot of bike pumps should be plenty strong as they are built to go up over 50+ (very conservative guess) and I think many should hit near 70-80 psi at least. Probably more. I'd look for one that has a foot bar/stand. Folding even. I can't remember what bike pump I have off the top of my head, but it's small enough to mount on the bike, but still has the foot pedal (folding) and can inflate it fairly quickly. It's still going to take quite a while to do a car tire though.
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Old 07-12-2004, 05:48 PM   #10
2centz
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Thanks, I'll take a look for pumps at a Dick's Sporting Goods or Sports Authority.
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Old 07-12-2004, 11:54 PM   #11
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I have been using the $20 compressor from Walmart for over two years, and amazingly enough it's still working. It's not very fast if you need to add large quantities of air, but it does the job. I think they also have a cheaper model for around $10.
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Old 07-13-2004, 01:04 AM   #12
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decent bike floor pump - $30-60

12v cig socket pump from autozone/kragen - $25-45

the bike pump might be a lil faster though.

I use a autozone 12v pump. just set it to a preset psi, and leave it there til the desired psi is reached. then check w/ a hand tool.
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Old 07-13-2004, 02:13 AM   #13
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Quote:
Originally posted by TheWRX
I have been using the $20 compressor from Walmart for over two years, and amazingly enough it's still working. It's not very fast if you need to add large quantities of air, but it does the job. I think they also have a cheaper model for around $10.
yup, i got the cheaper $10 one, at least you dont have to pump by foot. better than nothing.
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Old 07-13-2004, 02:54 AM   #14
wm07
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It is a good workout using a bike pump to fill up a tire. Don't ask me how I found out, but hey, now you can use the $$ you saved from paying gym money for mods! :P
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Old 07-13-2004, 08:46 AM   #15
TheWRX
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Wanted to mentione one more thing on the Walmart compressors: Ignore the built-in pressure display, it's way off. Use a good pressure gauge to measure your tire pressure. If you use the compressor frequently, you'll have a good feel for how long it will take to add a given number of psi. I typically measure the pressure before connecting the compressor, run the compressor for a little longer than necessary, and then bleed off the extra pressure (it's normally very close already).
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Old 07-13-2004, 10:08 AM   #16
2centz
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Dumb question- how do you bleed off air pressure in the tire? I can do it pretty easily on bike tires since I only have to put pressure on the presta valve, but I'm not sure on car tires. Also, for the hand pressure gauge, I got a cheapie from Walmart. How accurate are they? Any better than the Walmart or Autozone pumps?
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