satchell link rear suspension design

sandastatz52824 April 07, 2022 design , satchell , suspension Comment

With a Satchell link rear suspension the designer can achieve a low roll center good anti-squat good support for the axle and there is no need for extra chassis bracing. Satchell Link I thought Id throw in the idea of a Satchell Link rear suspension set up.

Designing The Satchell Link Page 2

When designing or tuning a 4-link it is important to understand the relationship between link lengths and angles and how the relationship affects roll steer and tire loadings.

. The left rear only comes down momentarily when the driver is transitioning from power to braking at the end of the straights. A link length change of 1 or a link angle change of 5º can make a noticeable change to handling. The anti-squat value is determined by the vertical angle of the rear links as they relate to the front axle position and the center of gravity of the vehicle.

Multi-link suspension In this type of. A newer style that has come stock in many vehicles and that works well as an all-around type of suspension. How do you calculate the roll center for a Satchell link rear end.

The rear suspension pickup points are highlighted with crosshairs. This makes more room for packaging in a car with really limited space its a very good option. Mumford linkage Live axle.

It also has the benefit of having a lower roll center tha most other options. On any rear suspension system assuming it is a full-forward system even a two-link moving the IC higher will produce a higher percentage of antisquat making the truck not squat as much during. The satchell link is basically a triangulated 4 link with some adjustability but with the mounting positions of the upper and lower bars reversed.

Suspension design software SuspTypes. Rear suspension is a Satchell-Link design mounted to a De Dion tube. CorteX Racing partner and founder Filip Trojanek went deep for us debunking the idea that independent rear suspension is always superior to a solid-axle setup.

This is a 4 link suspension with the two upper links angled in toward the differential. The absolute best or most consistant suspension design is the True Triangulated 3-link that is used on the Lotus Cortina. This is when the upper 2 bars of a 4 bar system run parallel to each other.

His response dropped so. Lower A-arm upper parallel links. The points in plane view as shown and side view dictate the rear suspensions geometry.

For readers unfamiliar with the Satchell link suspension it is a form of triangulated four-bar linkage for a beam axle. The angled upper links hold the axle in place side to side so a panhard bar is not needed. Talking with these guys about the car reminds me a little of the persistence of Edison and the light bulb.

From talking with KJ and Marshal this suspension design was after many iterations with other designs. Herb Adams suggests a Satchell Link Suspension is the best overall 4 linkmainly because using the converging bars on the bottom of the axle lowers the roll center. The triangulated 4 link rear suspension.

Also the Satchell link is compact and can be squeezed into applications where other styles of live real axle could not be made to fit. Watts linkage WOBLink e. Since the footwell must be a minimum of around 690mm 272in wide in order to use a long lower wishbone in conjunction for aerodynamic reasons with a raised footwell it is necessary for the FLWB rear leg either to pass through the.

As they looked at the design they switched the upper and lower geometry to accomodate the springs the old give up performance for the sake of mass produced cost savings. The triangulation comes from the lower bars running into a center point but not really connecting togeather. With a Satchell link rear suspension the designer can achieve a low roll center good anti-squat good support for the axle and there is no need for extra chassis bracing.

Bonsiderationasic C for Suspension. Double A-arm steering link Front Double A-arm toe link Rear The classis unequal length non parallel wishbone format. Seems I remember reading somewhere that the Ford suspension design team for the 1979 and up Mustang was looking for a better rear set up and went with the Satchell link.

Anti-squat in a linked suspension system determines how the rear end of a vehicle moves under acceleration or upon the rear axle contacting an obstacle at speed. Im kind of stuck with the design of my rear suspension setup on my racecar ie live axle or beam axle but I want to improve what I have if possible. This moves the ends of the axle assembly forward and aft in effect.

For those that dont know Terry Satchell is currently an employee for Ford Motorsports in the suspension designengineering department. I also traded off suspension link length for the reduction in bonnet height allowed by the use of pullrods. Because the rear suspension is softer for.

As the suspension moves the trailing arms swing in arcs. A wider definition considers any independent suspensions having three control links or more multi-link suspensions. I am not a suspension guru and ill leave that to the guys at CC.

Also the Satchell link is compact and can be squeezed into applications where other styles of live real axle could not be made to fit. The 4-link is a relatively complex rear suspension that is very sensitive to adjustments. If I can lengthen links or change their pickup points I will do so to help then I will try it out.

I gather Mallock used their TAM theory to adjust link bar location points to good effect. Lower A-arm upper virtual A-arm steering link Front Lower A-arm upper virtual A-arm toe link Rear As used on the PorscheGT3 rear. The front lower pickup points are hard to see and are partially blocked by the crossmember.

There is a good discussion on the FF Cobra forum on suspensions in general including a few tidbits on the Satchell suspension. Multilink Suspension A multi-link suspension is a type of vehicle suspension design typically used in independent suspensions using three or more lateral arms and one or more longitudinal arms. Semi-trailing-arm rear axles e.

The design of front and rear suspension of a vehicle may be different.

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