Sugino VP crank pedal threads?
K8AC
and it has a Sugino VP double crankset. The pedals that came with the
bike were Ofmega rat-traps from Italy. It seems that the threads are
something other than British. While the threaded pedal spindle
measures the same as Japanese pedals I have, the Japanese pedals won't
thread into the Sugino arm more than a half turn or so. I'm assuming
that the threads must be Italian, French, or something else other than
British. If I knew which thread type was used in these Sugino VP
cranks, maybe I could find a new pedal with that thread. Or, I guess
I could just get some taps and chase the threads with a British tap.
The threads-per-inch appears identical to other pedals I have on
hand. What to do?
"\"T°m Sherm@n >
Will the pedals thread into the "wrong" side most of the way? If so,
the threads are likely buggered up.
--
Tºm Shermªn - 42.435731°N, 83.985007°W
I am a vehicular cyclist.
Frank Krygowski
First thing to do is measure things carefully and post dimensions here.
If you can borrow a decent dial or digital caliper, you can get the
thread diameter. A thread pitch gage, or some careful measuring and
counting, can tell the thread pitch, or the number of threads per inch.
If you don't have a decent caliper, this is the perfect excuse to buy
one! You'll be glad you did.
--
- Frank Krygowski
Jay Beattie
"K8AC" <fl...@k8ac.net> wrote in message
news:7e72937f-f208-43d8...@p10g2000yqi.googlegroups.com...
Try harder! There is a small difference in pitch between Italian,
British and Japanese 9/16th pedal threads, but it shouldn't prevent
you from mounting the pedals. It just makes it harder. There are
obvious no-goes like French thread or oversized Shimano AX, etc., but
I frequently interchanged platform pedals back in the day -- including
Campagnolo and various Japanese knock-offs -- and maybe even an
Ofmega. Should work.
-- Jay Beattie.
--- Posted via news://freenews.netfront.net/ - Complaints to ne...@netfront.net ---
AMuzi
Sugino VP was only made in BSC 9/16"-20.
Consult any competent LBS to have the threads cleared and
your new pedals installed.
p.s. twenty years ago was 1991 (check date stamp inside
crank) at which point there were no metric pedal threads
anyway. The Ofmega spindles should be marked R-L (BSC) or
maybe D-S (ITA, which is fungibly similar for pedal threads).
--
Andrew Muzi
<www.yellowjersey.org/>
Open every day since 1 April, 1971
AngierNC
> Sugino VP was only made in BSC 9/16"-20.
> Consult any competent LBS to have the threads cleared and
> your new pedals installed.
>
> p.s. twenty years ago was 1991 (check date stamp inside
> crank) at which point there were no metric pedal threads
> anyway. The Ofmega spindles should be marked R-L (BSC) or
> maybe D-S (ITA, which is fungibly similar for pedal threads).
>
> --
> Andrew Muzi
> <www.yellowjersey.org/>
> Open every day since 1 April, 1971
Andrew - looks like we'll both learn something from this. I checked
out your website and see that you're from a part of the country where
adults actually ride bicycles, are knowledgeable about them, and have
competent LBSs they can rely on. Things are a bit different here in
rural North Carolina. Here's a link to what passes for a bike shop
here: http://www.lankys.com/lankysbicycle/home/default.asp . All
other "bike" shops here are actually places where they sell old
Harleys and associated parts. The closest real bike shop is a 70 mile
round trip for me and the oldest mechanic there is maybe 22. They
have no interest in anything they didn't sell and they tend to laugh
hysterically at any bike or part older than themselves. And, I have a
better set of tools than they do. I was through Madison just last
month, having done a one week tour with the PAW group in the Portage
area - a great time.
Your info on only British threads on the Sugino VP was valuable. Upon
closer inspection with a magnifier, I could see that the Ofmega pedal
threads were a bit unusual - they had a sharper peak than normal and
the threaded section was about .001" larger than my other pedals. I
carefully cleaned the crank arm threads with a fine metal brush, and
pulled out a thread of aluminum that was probably shaved out by the
sharp pedal thread. After cleaning the crank treads thoroughly, I was
able to horse the new pedal onto the crank with just a bit more than
normal force. The only markings on the Ofmega pedals were a D stamped
on the end of one spindle and an S stamped on the other. No
indication of thread type.
Thanks to all for the comments.
Floyd Sense
Angier, NC
Michael Press
<b8cc4093-788d-4256...@l2g2000vbn.googlegroups.com>,
AngierNC <fl...@k8ac.net> wrote:
> The only markings on the Ofmega pedals were a D stamped
> on the end of one spindle and an S stamped on the other.
Destra a sinistra.
--
Michael Press
Peter Howard
Here's a link to what passes for a bike shop
> here: http://www.lankys.com/lankysbicycle/home/default.asp .
It does look like you'd be well supported if you wanted to drive a ride-on mower
across America.
PH
p.s.Glad you finally sorted out your pedal thread problem.
AMuzi
Good work.
The D and S notation is for an Italian WW thread 9/16" x
20tpi with a 55 degree thread angle (as opposed to our
current 60 degree threads). The difference is negligible in
most applications for a pedal thread. (Ofmega's tolerances
on any given day could be all over the place. Sugino are
highly consistent with correct thread forms)
If you didn't grease the pedal threads you ought to do that.
And just because some folks speak slowly doesn't mean they
aren't good machinists or mechanics.
"\"T°m Sherm@n >
> AngierNC wrote:
> Here's a link to what passes for a bike shop
>> here: http://www.lankys.com/lankysbicycle/home/default.asp .
>
> It does look like you'd be well supported if you wanted to drive a
See <http://en.wikipedia.org/wiki/Alvin_Straight>.