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1985 Suntour Cyclone Front Derailleur Question

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1985 Suntour Cyclone Front Derailleur Question

Old 12-05-19, 09:02 PM
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jdave5917
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1985 Suntour Cyclone Front Derailleur Question

Late 1985 Suntour Cyclone front derailleur. Curious what the purpose of the threaded hole at the bottom of that "tail" on the clamp is for. Guessing for some alternative clamping method.
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Old 12-06-19, 01:39 AM
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It's there for a thread-in cable stop in case you're running cable covers instead of using a BB cable guide - other Suntour F. Ders had them too. The stops had a 5mm thread so they could also be screwed into downtube shifter bosses for use with bar-cons instead of using a clamp-on cable stop.
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Old 12-06-19, 07:57 AM
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Originally Posted by d_dutchison View Post
It's there for a thread-in cable stop in case you're running cable covers instead of using a BB cable guide - other Suntour F. Ders had them too. The stops had a 5mm thread so they could also be screwed into downtube shifter bosses for use with bar-cons instead of using a clamp-on cable stop.
Just realized I posted this in the wrong forum but thanks for the reply. The hole on this one looks more like a 3 mm tap/thread, or 4 mm at most. The cable clamp screw threads in perfectly and it's definitely smaller than 5 mm.
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Old 12-06-19, 08:18 AM
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Originally Posted by jdave5917 View Post
Just realized I posted this in the wrong forum but thanks for the reply.
Thread moved from appraisals to C&V.
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Old 12-06-19, 08:19 AM
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1985 Suntour Cyclone Front Derailleur Question

Moving this thread here since I unintentionally posted it in the "What's it Worth" forum yesterday.
Late 1985 Suntour Cyclone front derailleur. Curious what the purpose of the threaded hole at the bottom of that "tail" on the band clamp is for.
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Old 12-06-19, 09:44 AM
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That would be for an optional cable housing stop. A few other derailers have this also iir.
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Old 12-06-19, 11:07 AM
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Merged duplicate threads.
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Old 12-06-19, 04:11 PM
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Originally Posted by jdave5917 View Post
Moving this thread here since I unintentionally posted it in the "What's it Worth" forum yesterday.
Late 1985 Suntour Cyclone front derailleur. Curious what the purpose of the threaded hole at the bottom of that "tail" on the band clamp is for.
Here is a related thread that I started when I had the same question some time ago. It includes pics!

Suntour FD cable housing stop missing -- workaround?
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Old 12-06-19, 07:41 PM
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Another potential solution. Would probably require obtaining the correct threaded bolt, to fit the derailleur.

https://www.planetbmx.com/shop/threa...able-stop.html

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Old 12-07-19, 10:04 AM
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Here's two pretty much identical Mountech FDs- one has the cable stop, the other doesn't:

Mountech FD by Dave The Golden Boy, on Flickr

Mountech FD Side by Dave The Golden Boy, on Flickr


FWIW- it's a 5g cable stop.
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Old 12-07-19, 11:05 AM
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Originally Posted by noobinsf View Post
Here is a related thread that I started when I had the same question some time ago. It includes pics!

Suntour FD cable housing stop missing -- workaround?
Thanks - the photos were helpfull. In my case, the question was just to satisfy my curiosity since the 1986 Club Fuji that I'm working on has integrated cable guides on the bottom of the bottom bracket shell.
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Old 12-08-19, 02:34 PM
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Originally Posted by jdave5917 View Post
... The cable clamp screw threads in perfectly and it's definitely smaller than 5 mm.
The clamp screw on a Suntour FD is (also) 5mm
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