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Display Mesage #92282


Desirous Of Clutch Spring Measurements
Written by ascterransin on 4/16/2010 at 03:55 am

I'm picking up a new set of stock springs on Saturday if nobody else comes up
with one. I'm hoping to do my clutch then if the darn friction disks come in and
can compare old vs new. My clutch has slipped under heavy load since I bought it
used, 80k miles ago. I think the strain of carrying its previous owner (E-Buzz
anyone?)prematurely weakened them...

Steve Johnsen
Manassas Park, VA

<pointless non sequitur>
I can read minds but, it's pointless cause I'm illiterate. I'd know what you
were thinking, if I could read.
-Name the comedian w/o Googling-
<end>

--- In ipcrc@yahoogroups.com, "unlikelyloginname" <unlikelyloginname@...> wrote:
>
> Winglet's clutch is just starting to slip under heavy load, so I'm
contemplating replacing the friction disks and springs. The Service Manual
provides the free length for the springs (38.0mm, 1.50in) and the service limit
(36.5mm, 1.44in).
>
> If someone has a spring lounging around might they be so kind as to measure
the outside diameter? That will help me peruse the choices at McMaster-Carr so
that I can try a slightly stronger set.
>
> If someone could measure the spring rate, that would be swell. (E.g. a four
pound hand weight compresses the spring 3mm. Don't you love mixing measurement
systems?)
>
> TIA,
> Seth
>
> <pointless story>
> In my industrial automation days I used to deal with all sorts of daffy mixed
measurements. One of the strangest appeared to be grams per square foot. The
explanation made sense. A pipe mill had to spray graphite on a mandrel as a
lubricant. The amount of graphite was critical. They measured it by tearing a
one foot length off a one foot wide roll of aluminum foil and massing it, in
grams, on a lab balance. Then they taped it to the mandrel, ran it through the
spray box, peeled it off, and plopped it back on the balance. Delta mass per
unit area in g/ft^2.
> </pointless story>
>

Message Thread for message #92282

unlikelylogi...
4/15/2010, 02:38 am
Desirous Of Clutch Spring Measurements
Winglet's clutch is just starting to slip under heavy load, so I'm contemplating replacing the friction disks and springs. The Service Manual provides the free length for the springs (38.0mm, 1.50in) and the service limit (36.5mm, 1.44in).

    ascterransin
    4/16/2010, 03:55 am
    Desirous Of Clutch Spring Measurements
    I'm picking up a new set of stock springs on Saturday if nobody else comes up with one. I'm hoping to do my clutch then if the darn friction disks come in and can compare old vs new. My clutch has slipped under heavy load since I bought it us

      troy.ohio_pc800
      4/16/2010, 09:13 am
      Desirous Of Clutch Spring Measurements
      Steve, When I rebuilt my clutch at around 80k miles, I fitted new (standard) springs although the old ones had the exact same free length dimension. I figured why take a chance after going to all that trouble.

        ascterransin
        4/18/2010, 02:57 am
        Desirous Of Clutch Spring Measurements
        Seth, I picked up my stock clutch springs today and just measured them. They all did appear to be 38mm long. Geez the service limit of 36.5mm, 1.5mm difference, is only about the width of the flattened spring end. The diameter appe