SPD clipless pedals with 9/16" shaft?

Do these exist? I want to install them into.
an old cruiser (you guessed it 1973 Schwinn).

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- Zilla
Cary, NC USA
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- Zilla
Cary, NC USA
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http://www.bikemania.biz/Knee_Savers_s/125.htm

Zilla said:

Do these exist? I want to install them into.
an old cruiser (you guessed it 1973 Schwinn).

--

SPD's on an old Speedster? You is one sick puppy. On my current
three-speed project, I'm going to stick with rattrap pedals:
http://www.rivbike.com/webalog/pedals_clips_straps/14020.html . I find
that "normal shoe" pedals make it a lot easier to hop onto the bike for
a short errand.

Jeff

JeffWills said:

Zilla said:

Do these exist? I want to install them into.
an old cruiser (you guessed it 1973 Schwinn).

--

SPD's on an old Speedster? You is one sick puppy. On my current
three-speed project, I'm going to stick with rattrap pedals:
http://www.rivbike.com/webalog/pedals_clips_straps/14020.html . I find
that "normal shoe" pedals make it a lot easier to hop onto the bike for
a short errand.

Very true. My city bike has rat traps with no toe clips, but if I were
to replace them, it would be with the lovely and affordable MKS
platforms & clips:

http://www.rivbike.com/webalog/pedals_clips_straps/14030.html

<[email hidden]> wrote in message
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Quoted message said:

With all due respect, you've got it backwards.

SPD's _typically_ have a 9/16" thread.

What you need is a 1/2" thread. (and I've never seen one like that)

Lewis.

*****

Hmmmm. Ok here's what I did.

I have the original pedals on there and used Park Tool's
Pedal wrench to them off, and used the side that had
9/16" marked on it. Not knowing any better, I tried to
install a set of Shimano M515s, and of course they don't
fit since the shaft is bigger. They fit on the side that of
the pedal wrench marked 15mm.

What did I miss in my foiled experiment?

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- Zilla
Cary, NC USA
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"Zilla" <[email hidden]> wrote in message
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Quoted message said:

<[email hidden]> wrote in message
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Quoted message said:

With all due respect, you've got it backwards.

SPD's _typically_ have a 9/16" thread.

What you need is a 1/2" thread. (and I've never seen one like that)

Lewis.

*****

Hmmmm. Ok here's what I did.

I have the original pedals on there and used Park Tool's
Pedal wrench to them off, and used the side that had
9/16" marked on it. Not knowing any better, I tried to
install a set of Shimano M515s, and of course they don't
fit since the shaft is bigger. They fit on the side that of
the pedal wrench marked 15mm.

What did I miss in my foiled experiment?

--
- Zilla
Cary, NC USA
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I did more reading and 1/2" is indeed what I need.
I'll look into those adapters someone mentioned.
Thanks folks, as always!

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- Zilla
Cary, NC USA
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Zilla said:

I have the original pedals on there and used Park Tool's
Pedal wrench to them off, and used the side that had
9/16" marked on it. Not knowing any better, I tried to
install a set of Shimano M515s, and of course they don't
fit since the shaft is bigger. They fit on the side that of
the pedal wrench marked 15mm.

What did I miss in my foiled experiment?

Pedals with a 9/16" shaft have flats for a 15mm wrench
(unless they don't have flats). Pedals with a 1/2" shaft
have flats for a 9/16" wrench.

Zilla said:

Hmmmm. Ok here's what I did.

I have the original pedals on there and used Park Tool's
Pedal wrench to them off, and used the side that had
9/16" marked on it. Not knowing any better, I tried to
install a set of Shimano M515s, and of course they don't
fit since the shaft is bigger. They fit on the side that of
the pedal wrench marked 15mm.

What did I miss in my foiled experiment?

Wrench size vs. thread size. The 15mm wrench typically fits 9/16"
thread pedals. The 9/16" wrench typically fits 1/2" thread pedals. This
may not always be true, but it esplains your issues.

Jeff

Quoted message said:

With all due respect, you've got it backwards.

SPD's _typically_ have a 9/16" thread.

What you need is a 1/2" thread. (and I've never seen one like that)

The OP could ream and tap the cranks for 9/16 pedals.

--

John ([email hidden])

Zilla said:

Hmmmm. Ok here's what I did.

I have the original pedals on there and used Park Tool's
Pedal wrench to them off, and used the side that had
9/16" marked on it. Not knowing any better, I tried to
install a set of Shimano M515s, and of course they don't
fit since the shaft is bigger. They fit on the side that of
the pedal wrench marked 15mm.

What did I miss in my foiled experiment?

You're confusing the distance across the wrench flats with the pedal shaft
diameter.

--

John ([email hidden])

[email hidden said:

"]With all due respect, you've got it backwards.

SPD's _typically_ have a 9/16" thread.

What you need is a 1/2" thread. (and I've never seen one like that)

Lewis.

*****

There were some 1/2 inch bmx SPD pedals made in the past. I bought a pair on ebay, but they are pretty rare these days.

quote='John Thompson'On 2006-04-24 said:

With all due respect, you've got it backwards.

SPD's _typically_ have a 9/16" thread.

What you need is a 1/2" thread. (and I've never seen one like that)

The OP could ream and tap the cranks for 9/16 pedals.

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John ([email hidden])[/QUOTE]

Or grind or turn 9/16 pedals down to 1/2, then use a die (never heard of a 1/2 LH thread die though).

meb said:

John Thompson said:

Quoted message said:

With all due respect, you've got it backwards.

SPD's _typically_ have a 9/16" thread.

What you need is a 1/2" thread. (and I've never seen one like that)

The OP could ream and tap the cranks for 9/16 pedals.

--

John ([email hidden])

Or grind or turn 9/16 pedals down to 1/2, then use a die (never heard
of a 1/2 LH thread die though).

Dear Meb,

Dunno what thread pitch is needed, but here are some
half-inch 13 & 20 left-hand dies:

http://www.victornet.com/cgi-bin/victor/productlist.html?subdepartments=Left+Hand+Taps:620,624,605,607

Cheers,

Carl Fogel

Zilla said:

Do these exist? I want to install them into.
an old cruiser (you guessed it 1973 Schwinn).

--
- Zilla
Cary, NC USA
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- Zilla
Cary, NC USA
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YST makes a bottom bracket conversion kit that converts an American BB to a square taper spindle, alowing you to mount a regular crank set. That might be the easiest way to get 9/16 threads.
Dan

No, but a good machinist could turn the 1/2 threads. It took my friend
about 15 minutes!

Turned the pedals down to 1/2" Opening the crank to 9/16 might weaken
it.
"

John Thompson said:

Quoted message said:

With all due respect, you've got it backwards.

SPD's _typically_ have a 9/16" thread.

What you need is a 1/2" thread. (and I've never seen one like that)

The OP could ream and tap the cranks for 9/16 pedals.

The OP has a Schwinn Speedster, with one-piece cranks. You can't ream
and tap them out to 9/16"... that would cut the eye off the end of the
crank!

Jeff

"Sammy Shuford" <[email hidden]> wrote in message
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Quoted message said:

No, but a good machinist could turn the 1/2 threads. It took my friend
about 15 minutes!

Turned the pedals down to 1/2" Opening the crank to 9/16 might weaken
it.
"

I like this advice.

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- Zilla
Cary, NC USA
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