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 ________________________________ FormulaCar Magazine - A Proud Supporter of Formula 500 The Official Publication of Junior Formula Car Racing Subscribe Today! www.formulacarmag.com or 519-624-2003 _________________________________ _______________________________________________ F500 mailing list - [email protected] To unsubscribe or change options please visit: http://f500.org/mailman/listinfo/f500 *** Please, DO NOT send unsubscribe requests to the mailing list! ***
