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Due to space limitations related to a shitty fuel tank placement, I am seriously considering this as a suspension option for the SAS rear.
Are there any problems/advantages to doing it this way?
From my (extremely) limited knowledge of suspension design this would have the benefit of having good articulation, lower links that are a bit more difficult to damage when rolling off an obstacle (always "higher" than the equiv parallel link 4-5link setup), and lower roll center than an A frame.
Not doing it to be different, but to solve a real problem.
George Carlin, an American Comedian said; "Think of how stupid the average person is, and realise that half of them are stupider than that".
cant comment on the characteristics of how it'd behave offroad. but how would ya mount those lower links on the axle end on a 'normal' (ie. non-rockwell) diff? would need something that didnt hang low, but could still pull the rear centre out
Doesn't look like it, it has a hoop over the top of the diff with the links attatched....
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Another advantage of the Satchell link setup that just occurred to me is the lower links would effectively run about 1" or so lower than the tailshaft for its entire length, thereby offering a degree of protection to the rear UJ and pinion.
George Carlin, an American Comedian said; "Think of how stupid the average person is, and realise that half of them are stupider than that".
Doesn't look like it, it has a hoop over the top of the diff with the links attatched....
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Another advantage of the Satchell link setup that just occurred to me is the lower links would effectively run about 1" or so lower than the tailshaft for its entire length, thereby offering a degree of protection to the rear UJ and pinion.
the principal is there, just move the hoop
If the above post did not offend you in any way please PM me so I can try harder!!
dosen't that set up make the roll centre higher more likly to tip over?
I have a pic somewhere that shows this concept.
If you think of a race car and how they are setup they try to get the point of attatchment as high as possible so that the weight of the vehical in a corner is below the attatchment. you want your attatchment (A frame, wats link)to be the same hight as the centor of gravity.
I will dig up some info.
Last edited by professor on Thu Oct 27, 2005 7:18 pm, edited 1 time in total.
professor wrote:I know this is for anti squat but i think it may help.
The lowest picture is how it would end up, as both the mounts would be at the chassis rail level, upper link horizontally mounted to the top of the axle at the wheel end, and lower link falling away to the bottom of the axle at the diff pumpkin. It would therefore seem to be well set up for anti-squat.
Point taken about the roll center/CoG, but I think it is a matter of getting the right link lengths and geometry
Anyone have access to a CAD system that could do some modelling???
George Carlin, an American Comedian said; "Think of how stupid the average person is, and realise that half of them are stupider than that".
DAMKIA wrote:
Anyone have access to a CAD system that could do some modelling???
Just log on to pirate, download the 4-link calculator and put in your data.
Tried that, cant get it passed Open Office, will only open as a read only with no access rights to change it, tried the button on the top taskbar and the edit/select options. (I am relatively new to OO and the whole XLS thing anyway so may well be a prob with me, one of those thinge I never got around tolearning...)
George Carlin, an American Comedian said; "Think of how stupid the average person is, and realise that half of them are stupider than that".
if it's set up exactly like that photo you'll get a stupidly low roll centre and very high anti squat. obviously it won't be like that bacause a banjo diff doesn't have all the steel in the same place as a rockwell. you'll probably find you still have trouble clearing your fuel tank as your straight upper links will have to be mounted quite high above the axle to get vertical seperation from the lowers, as you won't be able to mount the lowers as far below centre as that picture shows.
just put 2 lowers, an upper, and a panhard in it. much more workable and tunable.
didnt even think of that
