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Trevor Booth · 08-18-06, 03:54 AM

Russ,
A bushed system, sorry I did not make that clear. Also you should not run caster on a bushed system unless the bushes at C and C lower are very compliant. With any bushed system the pivot axis of A and C should be on the line A-C and the pivot axis of D parallel to the line A-C, similarly with the lower pivots.

Lowering the rear roll centre will transfer more weight to the front in corners, this may not be what you want. You need to read what the tyres are telling you.

Hi Clayton,
Should not make a lot of difference, the amount of caster is more governed by the plan view relationship of points A.

I am currently building a 3D model with variable geometry for one "corner" of a car. I will then be able to run plots of the effect of moving any point in any direction. This will make it easier for members to understand what does what in non Engineer speak. Give me a week or so.

I could explain it like this !!

A crane, includes a luffing jib having individual telescoping jib members, and a locking device configured for linkage of jib members and movable between an engagement position in which the jib members are locked together and a release position in which a first one of the jib members can be moved in and out relative to a second one of the jib members. The locking device is supported in the first jib member and received in a receptacle of the second jib member. A shifter, movable in an axial direction, is provided to shift the locking device via a coupling device between the engagement and release positions, with the coupling device extending perpendicular to the axis and connected to the shifter. The coupling device has a coupling member movable in a radial direction to effect an interlocking engagement with the locking device, which is movable in a same axis as the coupling member, wherein the locking device forms together with the coupling member a coupling between the shifter and the first jib member, and wherein in a transition phase between release and engagement positions, a projecting portion of the coupling member enters in interlocking engagement with the locking device.

:-)))

08-18-06, 03:54 AM	#45 (permalink)
Trevor Booth nota2266 Lifetime Premier Supporter Join Date: May 2004 GT40: Kurrajong, Australia Posts: 354 Rep Power: 8	Russ, A bushed system, sorry I did not make that clear. Also you should not run caster on a bushed system unless the bushes at C and C lower are very compliant. With any bushed system the pivot axis of A and C should be on the line A-C and the pivot axis of D parallel to the line A-C, similarly with the lower pivots. Lowering the rear roll centre will transfer more weight to the front in corners, this may not be what you want. You need to read what the tyres are telling you. Hi Clayton, Should not make a lot of difference, the amount of caster is more governed by the plan view relationship of points A. I am currently building a 3D model with variable geometry for one "corner" of a car. I will then be able to run plots of the effect of moving any point in any direction. This will make it easier for members to understand what does what in non Engineer speak. Give me a week or so. I could explain it like this !! A crane, includes a luffing jib having individual telescoping jib members, and a locking device configured for linkage of jib members and movable between an engagement position in which the jib members are locked together and a release position in which a first one of the jib members can be moved in and out relative to a second one of the jib members. The locking device is supported in the first jib member and received in a receptacle of the second jib member. A shifter, movable in an axial direction, is provided to shift the locking device via a coupling device between the engagement and release positions, with the coupling device extending perpendicular to the axis and connected to the shifter. The coupling device has a coupling member movable in a radial direction to effect an interlocking engagement with the locking device, which is movable in a same axis as the coupling member, wherein the locking device forms together with the coupling member a coupling between the shifter and the first jib member, and wherein in a transition phase between release and engagement positions, a projecting portion of the coupling member enters in interlocking engagement with the locking device. :-))) __________________ Trevor Booth, Finished assembling a pile of bits incl, mono, 302W on IDF's,ZF, 15" pin drive BRM.