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Fork disassembly questions

R100
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Posts: 332
Joined: Sun Jul 01, 2012 3:02 pm

Post by R100 » Fri Mar 20, 2015 11:02 am

R100 wrote:
Hoosier Tom wrote:
R100 wrote: Also, my online shop manual gives a spring free length of 278.8mm. Mine measure 403mm (15 7/8").
My manual gives an overall standard length of 407.0 with a repair limit of 396.0. Looks like you are fine.
HT
Which manual is that Tom?
Finally got that manual in the mail.
Looking at maintenance standards, B front cushion page 33, 34.

"front cushion spring free length 185.5"
followed by -
"front cushion spring free length 221.5"
followed by -
"overall length 407.0"
I am confused, can anyone shed light on this?

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G-Man
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Location: Derby, UK
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Post by G-Man » Thu Mar 26, 2015 8:40 am

R100

I've not really looked into this but I recalled there being differences between steel sliders and this is what I found. I think that the slider on the left is the early one for 38mm forks and the one on the right is the later steel type. Note the differences between the level of the spring support. I haven't looked at the corresponding stanchions to see if they are altered to preserve the spring length but this could be the reason for what you are seeing in the manuals.

Image

From the outside (apart from the NOS / rusty appearance) they look pretty much the same to me.....

Image

G
'60 C77 '60 C72 '62 C72 Dream '63 CL72
'61 CB72 '64 CB77 '65 CB160
'66 Matchless 350 '67 CL77
'67 S90 '77 CB400F

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