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1983 Araya Muddy Fox Pathfinder seat pin diameter

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1983 Araya Muddy Fox Pathfinder seat pin diameter

Old 09-03-17, 03:38 PM
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streetscrambler
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1983 Araya Muddy Fox Pathfinder seat pin diameter

Anyone know the seatpost diameter of the early Araya built Pathfinder, thanks.
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Old 09-03-17, 10:02 PM
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maddog34
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best to CAREFULLY measure the Inside diameter of the seat tube of the frame with good calipers...

If the tubing looks bent open farther that it should be, there is a tool to gauge seat post sizes... most well equipped bike shops will have that tool... it is a shaft with ever larger sizes marked on it's outer surface.....

Cyclo Seat Post Sizing Gauge 3 Piece Set Slides Together for Storage | eBay

if you don't have a bike shop near you, ANY mechanic should have a good quality se of calipers in his or her tool box.... check that the slot in the seat tube is fairly parallel before measuring the tube's ID, and that the tube has not been ovaled by over-tightening.

another option...if there is a decent community bike co-op near you... take the bike there, and try several; seat posts! the post should insert easily, yet quickly clamp in place when you tighten the quick release or post bolt, ok? DON'T try to force a too-large post into the frame tube.... if a post is too small, it won't clamp before the slot closes, and you might have to re-open the slot to a parallel gap before trying another post.

get the correct post, or risk damaging what isa cool old school frame, ok?
nice find, btw... that bike has a loyal following i hear!

Last edited by maddog34; 09-03-17 at 10:10 PM.
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Old 09-05-17, 09:58 AM
  #3  
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I'll add that the portion of the seat tube where the post fit is often the tightest is just at the lug's bottom, or about 1.5" to 2" from the open top end. This is where heat from brazing/welding both the top tube and the seat stays can cause tube distortions that won't be measured by a common caliper as the caliper jaws usually are too short to reach in far enough. So too with the couple of sizing sticks I've used, the sized steps are too short.


I find the absolute best way to find out the best post size is by trying posts of increasingly larger sizes till one is too tight. The size just below that one is usually the best fit. Every shop I've worked in has a bunch of old posts for this. Andy.
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Old 09-05-17, 11:23 AM
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Originally Posted by andrew r stewart View Post
i'll add that the portion of the seat tube where the post fit is often the tightest is just at the lug's bottom, or about 1.5" to 2" from the open top end. This is where heat from brazing/welding both the top tube and the seat stays can cause tube distortions that won't be measured by a common caliper as the caliper jaws usually are too short to reach in far enough. So too with the couple of sizing sticks i've used, the sized steps are too short.


I find the absolute best way to find out the best post size is by trying posts of increasingly larger sizes till one is too tight. The size just below that one is usually the best fit. Every shop i've worked in has a bunch of old posts for this. Andy.
+1
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Old 09-05-17, 11:53 AM
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Lots easier to ask online for other people to measure your own stuff, since it seems such a common reflex as post #1..
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