18mm quill stem
#1
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Location: Brunswick, Maine
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Bikes: 1948 P. Barnard & Son, 1962 Rudge Sports, 1963 Freddie Grubb Routier, 1980 Manufrance Hirondelle, 1983 F. Moser Sprint, 1989 Raleigh Technium Pre, 2001 Raleigh M80
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18mm quill stem
Looking for a quill stem, I measured the inside of the steerer tube on my Grubb frame and it is 18mm. I have not found any on ebay. I tried UK ebay and FR ebay, too. Are they really that rare?
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#2
Decrepit Member
That's a really odd I.D. for a 25.4mm O.D. steerer.
25.4mm - 18.0mm = 7.4mm/2 = 3.7mm wall thickness for the steerer tube. For the past 70 years or so, 25.4 O.D. steerer tubes have typically had 1.5mm walls and took 22.2mm quill stems. Low tensile strength steel hi-ten steerer tubes typically took 21.1mm quill stems.
Freddie Grubb made high end frames. Are you sure you measured the steer I.D. accurately?
25.4mm - 18.0mm = 7.4mm/2 = 3.7mm wall thickness for the steerer tube. For the past 70 years or so, 25.4 O.D. steerer tubes have typically had 1.5mm walls and took 22.2mm quill stems. Low tensile strength steel hi-ten steerer tubes typically took 21.1mm quill stems.
Freddie Grubb made high end frames. Are you sure you measured the steer I.D. accurately?
#3
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Sorry Stan, I measured wrong. It is indeed 22.2. Thanks for the help. (I've been working extra hard, lately, and I'm kind of wrecked).
Paul
Paul
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#4
Decrepit Member
Great, Paul. You've got lots of choices in 22.2 stems.