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Ironskillet

10-31-20 03:56 PM

What is this thing?

https://cimg8.ibsrv.net/gimg/bikefor...a9da726e6.jpeg
What is this little knob poking from the head tube?

Germany_chris

10-31-20 03:58 PM

It's a pump peg

nlerner

10-31-20 03:58 PM

Pump peg.

Pompiere

10-31-20 04:12 PM

Here's one with a pump on it. I think pump pegs became more widespread when bikes started getting a second set of water bottle mounts on the seat tube.

https://cimg6.ibsrv.net/gimg/bikefor...d6419529fe.jpg
1992 Performance Parabola

jonny7

10-31-20 04:21 PM

Why not show the full bike :love:

Ironskillet

10-31-20 07:12 PM

Thanks dudes! Now I know! And knowing is half the battle.
https://cimg0.ibsrv.net/gimg/bikefor...2cf64fe07.jpeg

jdawginsc

10-31-20 07:14 PM

Gorgeous Rossin!

jonny7

10-31-20 08:38 PM

Lovely!

Ironskillet

10-31-20 11:48 PM

Thanks guys!

P!N20

11-01-20 05:24 AM

Turbo boost button

Ironskillet

11-01-20 12:41 PM

Quote:

Originally Posted by P!N20 (Post 21770151)

Turbo boost button

I thought it was either that, or where you fill the frame with helium.

SJX426

11-01-20 01:01 PM

@Ironskillet - To be used like this:
https://live.staticflickr.com/65535/...6e74436a_b.jpg P1040401 on Flickr

The Golden Boy

11-01-20 01:08 PM

Quote:

Originally Posted by Ironskillet (Post 21769823)

Now I know! And knowing is half the battle.

The great American hero!

SpeedofLite

11-01-20 01:34 PM

Vestigial frame tube or supernumerary top tube.
Most bicycle scientists feel the answer is inconclusive.
Either way, go ahead and use it to support a frame pump.
That's how most of us use it.
Whatever you do, don't finger it obsessively while riding.

76SLT

11-01-20 01:54 PM

Quote:

Originally Posted by Ironskillet (Post 21770586)

I thought it was either that, or where you fill the frame with helium.

Nope, here's where you do that. 😄

https://cimg0.ibsrv.net/gimg/bikefor...6730318d81.jpg

montclairbobbyb

11-01-20 10:08 PM

Quote:

Originally Posted by Germany_chris (Post 21769589)

It's a pump peg

Aww man, you answered too quickly... I would have said something outrageous like "Zirx grease fitting for the head tube" :)... (hey, what a great idea....)

GamblerGORD53

11-01-20 10:17 PM

If the pump can't be braced against something, then they are near useless. IMO.

SJX426

11-02-20 06:42 AM

Quote:

Originally Posted by GamblerGORD53 (Post 21771330)

If the pump can't be braced against something, then they are near useless. IMO.

Yes. Use to carry the pictured one on my Montello. Hit a hard bump on the MUP and it was knocked off! Almost caught in my spokes. Certainly upset my riding rhythm! Another time I hit it when using my DT's. CO2 is now the source of filling repaired innertubes or replacement sew ups.

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