Short frame scout rake ?????

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friday
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Short frame scout rake ?????

#1

Post by friday »

Does any one know the rake of the short frame ? (1920 - 28)

The measurement I get is 23* , but thats on a bent frame ! S1750U - 26E31

WLA rake = 23* and a lot of modern sports bikes , eg 2015 Ninja = 23.5* , so relatively common angle

The 101 shop manual has a diagram by Geogre Yarocki page 18H
Rake = 30*
down tubes = 15*

The 101 neck cast has the same dimensions as the early scout neck , the top tube socket is 65* from the neck axis and the down tube sockets are 45* from the neck axis

I need to make a frame jig and would like the correct measurement

Ive tried all the big names and no one knows the rake !

Any info appreciated
friday
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Re: Short frame scout rake ?????

#2

Post by friday »

from my search and referencing the top tube as horizontal , the neck angle is 25 degrees and down tubes 20 degrees (combined 45 degrees).
the 1928-31 101 neck angle being the same cast as short frame 1927 -28 , also has neck angle of 25 degrees and down tubes 20 degrees , using the same motor mount cast from 27 - 28 short frame scout
friday
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Re: Short frame scout rake ?????

#3

Post by friday »

turns out veteran indians are 20 degrees up to the last power plus/standard 1923 , 1920 - 39 = 25 degrees , 1940 - 53 = 27 degrees
the early chief was still 20 degrees with powerplus forks and still 20 degrees from 1924 to 31 with pull down spring
no info on 149 and 249 , assume 27 degrees 1949 - 52

kind of like HD evolving Big Twin knuckle 25 degrees , 28 degrees , 30 degrees
veteran HD would be 20 degrees , 45" = 23 degrees , up to 1973 servicar
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