Tony you forgot that when TonyB was driving it, it broke the end right off
with the front gear! Still have the broken jakeshaft in the garage. I have
to start throwing things away!!!!!
BobbyJ #5 Fmod NER.
----- Original Message -----
From: "Anthony Jagodnik" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Sunday, August 26, 2007 10:10 PM
Subject: Re: [F500] Rear Suspension Question
A friend of mine has a Zink that was converted to quad link with belt
drive, but only an inboard bearing on the jackshaft. It had a bad
problem with skipping teeth until Bill Gendron added an outboard
bearing with major structural support. The unsupported shaft was
bending.
Regards,
Tony Jagodnik
NER SoloII FM 6 '87 KBS Mk3 F500
[EMAIL PROTECTED]
On Aug 26, 2007, at 9:02 PM, [EMAIL PROTECTED] wrote:
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
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