Pump says 90 psi
 

Hey guys, the bicycle specific pump I was using to pump my tires today has an indicator on the gauge at 90 psi. I think it’s a suggestion for tire pressure. Has anyone ever seen this before, or thought about using it? Im into internally consistent worldviews, and think the idea of someone who pumps their tires to 90 psi because that’s what it says on the pump is awesome. Would post a pic but my phone isn’t working well.

Yep, that's what it means. All tires should be pumped to 90 psi if you use that pump. If 90 psi is too high for the type of riding you do, you'll have to get another pump.

I really like the manufacturers choice of 90. I would have went with like 75 or 80, 90 is ballsy. Screw MTBs LOL.

The indicator is adjustable.

No, no, no, no, no. An adjustable indicator is not consistent with Larry's worldview. Please take your blasphemy elsewhere.

It looks adjustable, and that was my first thought, but it didn’t adjust. I didn’t try very hard and didn’t want to break it, I’ll check again tomorrow.

For what it’s worth, I go by my calibrated thumb, not the indicator. I might reference the indicator, but use my thumb, and would defer to the thumb if there is discrepancy.

I don’t think I follow your reasoning, but if you are just tooling around downtown Palo Alto and Stanford campus then 90 psi is probably fine if it doesn’t immediately blow your tire off the rim. As long as you stay off El Camino Real, that is. That road is a disaster.

Otto

Gotta respect the thumb. For calibration, drip lube or wax? :lol:

Ear protection when pumping tires

:innocent:

”Respect the Thumb”. If not, there wouldn’t be a rule of such.

I'm on the edge of my seat over here...

LarrySellerz what kind of bike? what kind of tires you rockin ?

what kind of riding and how much do you weigh ?

help us help you

/markp

Thats one of my favorite roads, very flat and nicely paved except for a 2 parts in palo alto (near town and country and again near safeway on the other side of the street) other than that its beautiful flat pavement

The indicator doesn't care about any of that, which is the beauty

No one follows his reasoning.

If I adopt this philosophy, do I need to buy a pump with the mark at 90 or can I just mark it with a Sharpie or crayon?

then why even post the question ?

/markp

Crayon would be appropriate in this case. But, it needs to be a calibrated crayon.

On my pump, there are numbers every 20 psi, in black, except 100, which is in red. I don't pump to 100, but it makes it easier to tell, without my glasses, when I'm in the 80-100 interval, and then all I have to do is hit the right hash mark within it.

The pump will work better if you put it in a crockpot of hot wax every 200 miles. :lol:

In my experience, crayons lose their precision pretty quickly. He'd better buy a new box and hope he gets it right on the first try.

Once the crayons reach a point that they are no longer useful for pump calibration, they can be melted into chain lube. Recycling is good for the environment.

Now that's thinking with portals. Do particular colors lubricate better?

Obviously red saves more watts.