keep it supported
my vote anyway
----- Original Message ----
From: Richard L.
Hensley <[EMAIL PROTECTED]>
To: [email protected]
Sent: Sunday, August 26, 2007
10:26:54 PM
Subject: Re: [F500] Rear Suspension Question
That 3.5" is
centerline of bearing to centerline of pulley.
----- Original Message -----
From: <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Sunday, August 26,
2007 9:02 PM
Subject: Re: [F500] Rear Suspension Question
Are you saying
that the drive sprocket is about 3.5 inches from the
nearest
bearing
support if you take away the support? If so,A that is a pretty
long
way
to go unsupported. There is really quite a bit of force through
there. I
have about an 1.5-2" unsupported, and that is about as far a distance as
I
have seen used. It has survived fairly well, but I did just have a
jackshaft
bearing failure. The remainder of the shaft is well supported and
has
minimal
distances unsupported.
An F5 is something that can't
really be overbuilt,
especially if used for autox.
----- Original
Message ----
From: Richard L.
Hensley <[EMAIL PROTECTED]>
To:
[email protected]
Sent: Saturday, August 25, 2007
4:18:49 PM
Subject: [F500]
Rear Suspension Question
I have a Red Devil about
1984 to 1986 with a
Kaw. The rear suspension has
been updated to a 4 link
with a panhard bar.
In addition there is a belt
tensioner bar on the outside
right side, it
has a 1" bearing on the jackshaft
and a 1-1/4" bearing on the
axle. The
tensioner bar as configured also
absorbs bending loads on the jack
shaft.
since the drive sheave is
cantilevered about 3-1/2" to the right of the
right jackshaft support bearing.
My question is "is the tensioner bar
necessary or can it be eliminated.
Calculations indicate the bending load on
the jackshaft is not excessive,
however start-up shock loads, such as in
autocross, are hard to estimate.
What's the current practice.
Richard
Hensley
