only cost me $55
daz
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sierra spring over
This might have been covered before, but has anyone looked at the effect these merc arms have on ackerman anlge? It looks to me they might reverse the ackerman angle.
I know that there is some opinion that with large agressive tyres that tend to scrub on their outside lugs, reverse ackerman is helpful, but amy guess is that engineer won't like it, nor the caliper mounting brackets.
Steve
I know that there is some opinion that with large agressive tyres that tend to scrub on their outside lugs, reverse ackerman is helpful, but amy guess is that engineer won't like it, nor the caliper mounting brackets.
Steve
[quote="greg"] some say he is a man without happy dreams, or that he sees silver linings on clouds and wonders why they are not platinum... all we know, is he's called the stevie.[/quote]
Posts: 396
Joined: Fri Dec 24, 2004 4:05 pm
Joined: Fri Dec 24, 2004 4:05 pm
Location: in the shed cutting/grinding/welding mocks old shit vic
How much do you actually know about ackerman angles?, they can be tricky to measure up properly.mr green wrote:the same effect every high steer kit on the market has. yes except the snake racing hub
The calliper bracket gets its strength through friction. It is therefore only strong in a forward or backward motion, not lateral motion as would be applied through steering inputs.
The bolts are only there to locate it. The bracket is also very brittle, I doubt that it can withstand the rigours of off road driving.
Get the correct equipment for the correct job, DON'T SKIMP ON STEERING OR BRAKES. It’s not worth a live, yours or anyone else’s.
Mitch
[quote="Gwagensteve"]
nope, apparently I hate suzukis so nobody should be surprised by that :roll:
Steve,[/quote]
[url=http://vic.suzuki4wd.com/]Suzuki 4WD club VIC[/url]
nope, apparently I hate suzukis so nobody should be surprised by that :roll:
Steve,[/quote]
[url=http://vic.suzuki4wd.com/]Suzuki 4WD club VIC[/url]
God Of Emo
Posts: 7350
Joined: Sun Aug 24, 2003 7:04 pm
Joined: Sun Aug 24, 2003 7:04 pm
Location: Newy, home of the ZOOK (Rockin the 'diff)
Contact:
The above setup will retain stock ackerman angle, as only the drag link has been relocated, making it cross over steer. If you run 2 merc arms (one on each side) and a NT tie rod you will loose the factory ackerman angle, and acutally gain a negative angle. This screws with the turning angles of each wheel to negotiate a corner.
Layto....
Layto....
[quote="v840"]Just between me and you, I actually really dig the Megatwon, but if anyone asks, I'm going to shitcan it as much as possible! :D[/quote]
Sorry, yes I didn't make it clear that my comment related to use of 2 merc arms and an NT tie rod.
Daddylonglegs on this board (Bill Larman) reversed the ackerman on his portal diffed landrover, and in his opinion, it improved steering, but I don't really think it is advisable. In the case of rovers, the stock steering arms bolt on and can be flipped to reverse the ackerman angle.
The effect is that the outside tyre is scribing a tighter arc when steering than the inside tyre, the exact opposite of what occurs normally. I imagine that at speed (something bills landy doesn't really achieve) it will lead to a lack of stability and lots of understeer. There is a fair case that in offroad use, it might lead to tighter steering as the outside tyre is usually the one that is loaded up, and the dragging of the inside tyre is less pronounced.
Interestingly, using one merc arm attached to the drag link might be worse than using two attached to the tie rod. With two, the load induced by the steering box is distributed across both arms not all borne by one.
I know from experience that merc parts are high quality and all, but doing all the steering work of the whole axle with one arm designed to do 1/2 the steering effort of a road car with a 24" tyre seems a big ask, IMHO it even looks a bit slender for the job, quite apart from the mounting issues associated with the caliper bracket, or that you have to elongate a mounting hole, so the location of the arm is being done by the shear strength of one bolt..... which happens to also be holding the caliper on.
This is without considering that the arm is being twisted slightly by the angle the drag link is at relative to the arm, (not the case in the merc application.)
I would normally say that just because it fits, doesn't mean it can do the job, but in this case, it doesn't really even fit... it just looks like it should. The irony is, that in this case, there is an OFF THE SHELF PART that fixes all of these problems!
Like I have said before about brakes though... don't worry... it's only your steering.
Steve.
Daddylonglegs on this board (Bill Larman) reversed the ackerman on his portal diffed landrover, and in his opinion, it improved steering, but I don't really think it is advisable. In the case of rovers, the stock steering arms bolt on and can be flipped to reverse the ackerman angle.
The effect is that the outside tyre is scribing a tighter arc when steering than the inside tyre, the exact opposite of what occurs normally. I imagine that at speed (something bills landy doesn't really achieve) it will lead to a lack of stability and lots of understeer. There is a fair case that in offroad use, it might lead to tighter steering as the outside tyre is usually the one that is loaded up, and the dragging of the inside tyre is less pronounced.
Interestingly, using one merc arm attached to the drag link might be worse than using two attached to the tie rod. With two, the load induced by the steering box is distributed across both arms not all borne by one.
I know from experience that merc parts are high quality and all, but doing all the steering work of the whole axle with one arm designed to do 1/2 the steering effort of a road car with a 24" tyre seems a big ask, IMHO it even looks a bit slender for the job, quite apart from the mounting issues associated with the caliper bracket, or that you have to elongate a mounting hole, so the location of the arm is being done by the shear strength of one bolt..... which happens to also be holding the caliper on.
This is without considering that the arm is being twisted slightly by the angle the drag link is at relative to the arm, (not the case in the merc application.)
I would normally say that just because it fits, doesn't mean it can do the job, but in this case, it doesn't really even fit... it just looks like it should. The irony is, that in this case, there is an OFF THE SHELF PART that fixes all of these problems!
Like I have said before about brakes though... don't worry... it's only your steering.
Steve.
[quote="greg"] some say he is a man without happy dreams, or that he sees silver linings on clouds and wonders why they are not platinum... all we know, is he's called the stevie.[/quote]
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