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Date: 08 May 2007 00:53:19
From: Kenny
Subject: Frog Pedal Clunk Sound Solved
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For the life of me I couldn't figure out why my left Frog pedal had
developed a clunk sound even though I gave it fresh grease twice a
year and hardly ever rode in the rain. At first I though it was the
cleat interface, but I tried pedaling without clipping in and the
clunk sound was still there. Always at the beginning of the power
stroke. I decided to take the plunge and disassemble it. Only one
problem, one of the two bolts that hold the two halves of the pedal
was stripped. It uses a smallish 3mm hex wrench. I had to ask someone
with a dremel tool to cut a gash into the bolt head so I could unscrew
it with a regular screwdriver. Well, with the minor drama out of the
way, I successfully split open the pedal. To my surprise there was no
grit or dirt inside and of course there was plenty of grease. At first
I suspected that one of the cartridge bearings had gone bad, either
the needle bearing one or the ball bearing one. Nope they were both in
pristine condition. The problem I discovered was the ball bearing
cartridge had lateral play because the retainer nut doesn't clamp down
far enough to placate it. I decided to put in a 3/16" washer between
the nut and the cartridge bearing. It got rid of the lateral play but
then during reassembly you find that the complete spindle assembly
won't fit back into the pedal body because the original plastic spacer
won't fit in due to the washer you had placed in to relieve the
lateral play. What to do? I decided to do away with the plastic spacer
altogether by using three 3/16" metal washers. Reassembled it and
went for a test ride. Damn, better than new. No, lateral play
whatsoever and no clunk sound. For you Frog owners thinking about
getting the refurb kit, I'd think twice about it. I am also a little
suspicious in that this may be an intentional design flaw to "you know
what."
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Date: 13 May 2007 19:08:52
From: Phil Holman
Subject: Re: Frog Pedal Clunk Sound Solved
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"Kenny" <Postoasted@gmail.com > wrote in message
news:1178610799.402624.262420@y80g2000hsf.googlegroups.com...
> For the life of me I couldn't figure out why my left Frog pedal had
> developed a clunk sound even though I gave it fresh grease twice a
> year and hardly ever rode in the rain. At first I though it was the
> cleat interface, but I tried pedaling without clipping in and the
> clunk sound was still there. Always at the beginning of the power
> stroke. I decided to take the plunge and disassemble it. Only one
> problem, one of the two bolts that hold the two halves of the pedal
> was stripped. It uses a smallish 3mm hex wrench. I had to ask someone
> with a dremel tool to cut a gash into the bolt head so I could unscrew
> it with a regular screwdriver. Well, with the minor drama out of the
> way, I successfully split open the pedal. To my surprise there was no
> grit or dirt inside and of course there was plenty of grease. At first
> I suspected that one of the cartridge bearings had gone bad, either
> the needle bearing one or the ball bearing one. Nope they were both in
> pristine condition. The problem I discovered was the ball bearing
> cartridge had lateral play because the retainer nut doesn't clamp down
> far enough to placate it. I decided to put in a 3/16" washer between
> the nut and the cartridge bearing. It got rid of the lateral play but
> then during reassembly you find that the complete spindle assembly
> won't fit back into the pedal body because the original plastic spacer
> won't fit in due to the washer you had placed in to relieve the
> lateral play. What to do? I decided to do away with the plastic spacer
> altogether by using three 3/16" metal washers. Reassembled it and
> went for a test ride. Damn, better than new. No, lateral play
> whatsoever and no clunk sound. For you Frog owners thinking about
> getting the refurb kit, I'd think twice about it. I am also a little
> suspicious in that this may be an intentional design flaw to "you know
> what."
>
I've never seen the need to deliberately design in features like these.
They are always far outnumbered by the non-deliberate design nuances.
Phil H
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Date: 08 May 2007 16:08:08
From: Tim McNamara
Subject: Re: Frog Pedal Clunk Sound Solved
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In article <1178610799.402624.262420@y80g2000hsf.googlegroups.com >,
Kenny <Postoasted@gmail.com > wrote:
> The problem I discovered was the ball bearing cartridge had lateral
> play because the retainer nut doesn't clamp down far enough to
> placate it.
Suddenly I am reminded of "Posh Nosh."
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Date: 09 May 2007 05:40:31
From: Michael Press
Subject: Re: Frog Pedal Clunk Sound Solved
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In article <timmcn-E5AA47.16080808052007@news.iphouse.com >,
Tim McNamara <timmcn@bitstream.net > wrote:
> In article <1178610799.402624.262420@y80g2000hsf.googlegroups.com>,
> Kenny <Postoasted@gmail.com> wrote:
>
> > The problem I discovered was the ball bearing cartridge had lateral
> > play because the retainer nut doesn't clamp down far enough to
> > placate it.
>
> Suddenly I am reminded of "Posh Nosh."
Embarrass the sprouts in scalding water ...
--
Michael Press
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Date: 08 May 2007 09:43:44
From: Bill Sornson
Subject: Re: Frog Pedal Clunk Sound Solved
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Kenny wrote:
> For the life of me I couldn't figure out why my left Frog pedal had
> developed a clunk sound even though I gave it fresh grease twice a
> year and hardly ever rode in the rain. At first I though it was the
> cleat interface, but I tried pedaling without clipping in and the
> clunk sound was still there. Always at the beginning of the power
> stroke. I decided to take the plunge and disassemble it. Only one
> problem, one of the two bolts that hold the two halves of the pedal
> was stripped. It uses a smallish 3mm hex wrench. I had to ask someone
> with a dremel tool to cut a gash into the bolt head so I could unscrew
> it with a regular screwdriver. Well, with the minor drama out of the
> way, I successfully split open the pedal. To my surprise there was no
> grit or dirt inside and of course there was plenty of grease. At first
> I suspected that one of the cartridge bearings had gone bad, either
> the needle bearing one or the ball bearing one. Nope they were both in
> pristine condition. The problem I discovered was the ball bearing
> cartridge had lateral play because the retainer nut doesn't clamp down
> far enough to placate it. I decided to put in a 3/16" washer between
> the nut and the cartridge bearing. It got rid of the lateral play but
> then during reassembly you find that the complete spindle assembly
> won't fit back into the pedal body because the original plastic spacer
> won't fit in due to the washer you had placed in to relieve the
> lateral play. What to do? I decided to do away with the plastic spacer
> altogether by using three 3/16" metal washers. Reassembled it and
> went for a test ride. Damn, better than new. No, lateral play
> whatsoever and no clunk sound. For you Frog owners thinking about
> getting the refurb kit, I'd think twice about it. I am also a little
> suspicious in that this may be an intentional design flaw to "you know
> what."
This is very dangerous. Your left pedal now weighs more than your right
one; prepare to lean right to compensate.
GOOD LUCK!
Bill "and I mean that, man" S.
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