Re: [CR] modern TA pedal thread problems - any history?

(Example: Production Builders:LeJeune)

Date: Tue, 3 Feb 2009 14:48:08 -0500
From: "George Allen" <jgallen@lexairinc.com>
To: <classicrendezvous@bikelist.org>
References: <269464.42504.qm@web82205.mail.mud.yahoo.com>
In-Reply-To: <269464.42504.qm@web82205.mail.mud.yahoo.com>
Subject: Re: [CR] modern TA pedal thread problems - any history?


Jerry,

I removed the dustcaps with my specially-made tool: old channel-locks with duct tape wrapped around the jaws. They came off without a scratch. I suppose the pedal bodies are die castings as there are parting lines (which rules out investment castings) and they are definitely not sand castings. Dies definitely wear out over time and are incredibly expensive to replace. However, worn dies probably are not responsible for the porosity in the castings. That is almost always caused by gas in the molten metal. Worn dies could explain the terrible surface finish as that would be consistent with die checking. Being in the manufacturing business myself, we deal with all sorts of castings and precision machining. I can assure you we would never let product like this leave our building. Bad bearings, terrible surface finish, porosity so severe there are voids in the castings and nonconforming threads speak to horrendous manufacturing and nonexistent quality control. There can be only one explanation: they were made by shallow, drunken rednecks more interested in pro football than quality manufacturing! ;-)

Tongue Firmly in Cheek,

George Allen Lexington, Ky USA

Jerome & Elizabeth Moos wrote:
>George, how did you remove the dustcaps? I think there is or once was a t ool made for these, but I've never seen one. Looks like one could always us e channel locks, but that might scratch up the dustcaps pretty badly.
>
>As I recall the TA pedals were unavailable for several months in maybe 200 7 while they supposedly replaced the dies (or moulds) that were said to be worn out, which was blamed for the voids in the bodies you describe. I had some made just before that that had the poor finish you describe. I've bo ught a couple of pairs since that interruption, and they are better, but I' m not sure they are up to the standards of several years ago. I've not yet found a pair that won't go into BSC cranks, but they might be lurking in m y parts bin. Other than just a screw up in manufacturing the only thing I can imagine is that these oversized threads might be made for cranks that h ave been stripped and rethreaded to a larger diameter, like when one instal ls helicoils to repair cranks. That seems a real long shot, since there ca n't be much market for a pedal like that. But TA has made some pretty unus ual stuff, like special cage plates for riders with one leg
> significantly shorter than the other. But no matter why these were produ ced, it was a definite screwup to allow them to get shipped and sold as BSC (or now ISO I guess) pedals.
>
>Regards,
>
>Jerry Moos
>Big Spring, Texas, USA
>
>
>
>
>
>--- On Mon, 2/2/09, George Allen <jgallen@lexairinc.com> wrote:
>
>
>
>>From: George Allen <jgallen@lexairinc.com>
>>Subject: Re: [CR] modern TA pedal thread problems - any history?
>>To: classicrendezvous@bikelist.org
>>Date: Monday, February 2, 2009, 2:21 PM
>>Dan,
>>
>>Good, I'm not going crazy. I, too, recently had the
>>exact same problem.
>>The box of the modern TA pedals are clearly marked 9/16-20
>>but they will
>>not thread into my TA cranks which I were sure were 9/16-20
>>as well. I
>>don't have any French threaded cranks so I couldn't
>>check them as you
>>did. I guess I should try to install some Campy pedals into
>>the TA
>>cranks to insure I have 9/16-20 threads in the cranks.
>>Also, the
>>cartridge bearings in both pedals were bad right out of the
>>box. So I
>>had to order some new ones to replace the originals. And
>>the casting
>>quality and finish on the bodies is horrible. There are
>>actually voids
>>in the casting where the cages are attached. I had read and
>>heard that
>>TA pedals were some of the best ever made. Unfortunately,
>>my experience
>>speaks otherwise. Perhaps the quality problems are unique
>>to the modern
>>versions but I won't be paying big bucks for an old
>>pair to find out.
>>
>>George Allen
>>Lexington, KY
>>USA
>>
>>
>>
>>
>>
>>
>>dan polito wrote:
>>
>>
>>
>>>List -
>>>
>>>I apologize if this is OT, but due to the classic
>>>
>>>
>>content of TA as a
>>
>>
>>>company, I felt it was appropriate.
>>>
>>>I recently purchased a brand new set of contemporary TA
>>>
>>>
>>piste pedals
>>
>>
>>>direct from the importer. The box and bag are marked
>>>
>>>
>>9/16 x 20,
>>
>>
>>>standard BSC threads. When trying to install these
>>>
>>>
>>pedals into marked
>>
>>
>>>BSC cranks, I am having some difficulties.
>>>
>>>I attempted to install the pedals onto the following
>>>
>>>
>>arms, all marked
>>
>>
>>>BSC: NOS Mavic 631 cranks, used sugino super comp, used
>>>
>>>
>>campagnolo
>>
>>
>>>super record, new dura-ace pista. I retapped the
>>>
>>>
>>suginos for fresh
>>
>>
>>>threads, and still no luck.
>>>
>>>I then attempted to install the pedals onto the two
>>>
>>>
>>french-threaded
>>
>>
>>>cranksets I had lying around the shop, a TA pro 5 vis
>>>
>>>
>>and a
>>
>>
>>>stronglight competition steel cotterless. these would
>>>
>>>
>>also not thread
>>
>>
>>>in.
>>>
>>>I have installed many pedals, both new and used, to
>>>
>>>
>>many cranks, both
>>
>>
>>>new and used. I have never had this problem before.
>>>
>>>Has anyone else had any similar problems with these
>>>
>>>
>>pedals?
>>
>>
>>>Thanks.
>>>Dan.
>>>
>>>
>>>
>>>
>>>
>>
>>--
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>>
>>_______________________________________________
>>
>>
>
>
>

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