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Old 06-05-2010, 10:52 AM   #14476
EvilGenius
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10.86 more miles today.

max speed of 16.3

average speed of 10.3

total time: 1:03

The sun is out today so it was about 10 degrees warmer than before, more people and more dogs, plus a little break in the middle. I thought for sure it added about 15min to my ride, but I guess not.
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Old 06-05-2010, 10:55 AM   #14477
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Quote:
Originally Posted by EvilGenius
I don't know the terminology, but it has a 3 speed buried inside the rear hub and it's one of those where you pedal backwards to stop.

I dunno if it's a good or bad setup, but it's pretty slick lookin either way.
Its an internal 3 speed hub with a coaster brake. They're easy to operate and usually reliable.
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Old 06-05-2010, 10:59 AM   #14478
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Quote:
Originally Posted by Dahveed
Its an internal 3 speed hub with a coaster brake. They're easy to operate and usually reliable.
Good.

When I sell my DR, imma get her one of these kits.



with this tailight.



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Old 06-05-2010, 12:07 PM   #14479
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How much PSI or how much should a tire (700c) squash out when you're riding a bike?

Mine squish out a little bit when I'm riding, but I want to make sure I"M not loosing efficiency and also avoiding getting a pinch flat.
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Old 06-05-2010, 12:16 PM   #14480
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Quote:
Originally Posted by EvilGenius
How much PSI or how much should a tire (700c) squash out when you're riding a bike?

Mine squish out a little bit when I'm riding, but I want to make sure I"M not loosing efficiency and also avoiding getting a pinch flat.
Air pressure is dependent on the tire. Some 700 tires take up to 160 psi or so. Others max out at 80 psi. Get a pump with a gauge or use a gauge you already have. You can't tell by just looking (well, unless you have some sort of mutant ability).
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Old 06-05-2010, 12:20 PM   #14481
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Quote:
Originally Posted by Dahveed
Air pressure is dependent on the tire. Some 700 tires take up to 160 psi or so. Others max out at 80 psi. Get a pump with a gauge or use a gauge you already have. You can't tell by just looking (well, unless you have some sort of mutant ability).
But is there a standard PSI you'd put it at? (I'm 220lbs if that matters)

I think these go up to 80, but I didn't think it'd need anything near that.
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Old 06-05-2010, 12:40 PM   #14482
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Quote:
Originally Posted by Zodiac
rode one of those once and it was surprisingly comfortable, as a quick shopping town bike. Nice if you're in jeans since you're more reclined too, felt like a chopper.

would make a great beach/wknd bike with a couple baskets.
note the Electra Townie is a lot lighter than it looks, being of aluminum etc construction, and it has an 8 speed internal hub.

I'm quite surprised at how low the rolling resistance is on the newer 26x1.95 fatties I put on my junkbike, even at a moderate 50psi... sure, they aren't 21x700c 120psi racing tires, but they roll much better than the mountain bike tires of a few years ago. they also had surprisingly good traction climbing a steep gravel road as long as I kept my weight on the seat and pedaled smoothly.
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Old 06-05-2010, 12:44 PM   #14483
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Quote:
Originally Posted by EvilGenius
But is there a standard PSI you'd put it at? (I'm 220lbs if that matters)

I think these go up to 80, but I didn't think it'd need anything near that.
what width are they, 700c x 28 or x35 or what? I -would- put those pretty close to 80 psi, like maybe 70-75c. The skinnier the tire, the more air you need to prevent pinch flats.

You definately need a good bike pump for 700c tires, I recommend a good floor pump like...

(I have that exact pump in silver, was about $25 on sale, they are $40 online)

that pump is efficient enough that you can pump up a car tire with it :) it fits both conventional 'schraeder' valves, as well as the skinny presta valves used on higher pressure bike tires.
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Old 06-05-2010, 12:48 PM   #14484
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Quote:
Originally Posted by pierce
what width are they, 700c x 28 or x35 or what? I -would- put those pretty close to 80 psi, like maybe 70-75c. The skinnier the tire, the more air you need to prevent pinch flats.

You definately need a good bike pump for 700c tires, I recommend a good floor pump like...

(I have that exact pump in silver, was about $25 on sale, they are $40 online)

that pump is efficient enough that you can pump up a car tire with it :) it fits both conventional 'schraeder' valves, as well as the skinny presta valves used on higher pressure bike tires.
Is there a reason no to use airpumps?

I'd like a bike pump, but I just don't have the cash to get one today.

I have a little one gallon air tank that we originally bought to use with a small nail gun, but I use it to fill tires and blow stuff off.
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Old 06-05-2010, 12:51 PM   #14485
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Quote:
Originally Posted by EvilGenius
But is there a standard PSI you'd put it at? (I'm 220lbs if that matters)

I think these go up to 80, but I didn't think it'd need anything near that.
Proper tire inflation will help prevent pinch flats. If the tire says inflate to 80, I'd be within 10 lbs of that. Running them real low (say 40-60) is inviting a pinch flat. Nothing like standing on the side of the trail in the sun and changing a flat tire.
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Old 06-05-2010, 12:56 PM   #14486
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Quote:
Originally Posted by EvilGenius
Is there a reason no to use airpumps?

I'd like a bike pump, but I just don't have the cash to get one today.

I have a little one gallon air tank that we originally bought to use with a small nail gun, but I use it to fill tires and blow stuff off.
I know of no reason NOT to use a compressor. Remember the tires are very small and will over-inflate and pop easily. I used a compressor on my kids bike the other day. Just be careful.

Most cyclists use a stand pump like in your post because its easier to fill to the correct pressure and they have the built in gauges - also they're portable and less expensive then a compressor. Lasty, many nicer bikes use a tube with a different inflation valve on it. The standard one for cars (MCs, etc) is a Schrader valve. Many bikes have a presta valve. Those fancy floor pumps usually do both.
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Old 06-05-2010, 01:28 PM   #14487
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Quote:
Originally Posted by Dahveed
I know of no reason NOT to use a compressor.
most compressors won't go much above 80 psi or maybe max 100psi. fine for fat-tire bikes that use 35-65psi. not so fine for 700c roadies that want 120+ PSI.

a good floor pump like I posted will pump up a 700c tire in a few strokes. just remember to -always- go all the way to the bottom, when you're up at 8 times atmospheric pressure (120psi), no air moves at all until the last 1/8th of a stroke.
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Old 06-05-2010, 01:49 PM   #14488
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Quote:
Originally Posted by EvilGenius
How much PSI or how much should a tire (700c) squash out when you're riding a bike?

Mine squish out a little bit when I'm riding, but I want to make sure I"M not loosing efficiency and also avoiding getting a pinch flat.
Here's a handy chart. This is based on weight per tire. Notice the wider the tire, the less PSI needed.

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Old 06-05-2010, 02:01 PM   #14489
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SCORE! That vintage stuff is fun to fix up and have around. Not as cool as vintage MCs, but much cheaper to own and fix.







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Old 06-05-2010, 02:01 PM   #14490
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If you use a compressor, be really careful! I'm not talking about the little 12v jobbies you can pick up at AutoZone. I'm talking about the big ones. Too much pressure too fast can blow a tire off the rim! It sounds like a fuggin' shotgun going off. If it happens, you'll be lucky if the only injury is ringing ears. I know a guy (a bike shop owner!) who wasn't paying attention using a compressor one day.... he injured his wrist so badly that he couldn't ride for a week or two. When I did it (on my mountain bike while trying to seat the beads), it warped the rim so badly that I had to buy a replacement!

For my road bike (700c X 23mm), I run about 110lbs. I weigh about 215.

For my Turner Sultan 29er, I run 28 lbs.

RIDE ON!!!



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