omega 24 v6
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| posted on 17/2/06 at 09:51 PM |
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Is there anything stupid about any question.
I guess not or you wouldn't have to ask so here goes.
On a panhard rod do the eye tube centre lines run longitudinally to the chassis centre line and parrallel to each other.
Or do they just run parrallel to each other regardless of the chassis?.
In the book they are square to the end of the tube but I need to angle the panhard rod to clear the diff and reckoned they need to be as my first
statement.
Anyone got photo's of their's ( oerr).
Sorry it's a live axle if you hadn't guessed
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Deckman001
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| posted on 17/2/06 at 10:00 PM |
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I beleive it can be angled, If you were to use rose joints they have their limits of angled use
Hope this helps
Jason
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gazza285
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| posted on 17/2/06 at 10:12 PM |
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It's not critical, but if you keep the joints in line with the chassis it would help as the sideways movement will be slightly reduced.
DO NOT PUT ON KNOB OR BOLLOCKS!
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Mark Allanson
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| posted on 17/2/06 at 10:12 PM |
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I think the ideal would be the rod being parallel to the ground at the average on ride height between roadgoing compression and droop.
I raised the chassis mount on mine to make this about right, if left to book chassis, the rod would have pulled the axle 3mm to the LH side on full
compression
If you can keep you head, whilst all others around you are losing theirs, you are not fully aware of the situation
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gazza285
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| posted on 17/2/06 at 10:14 PM |
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?
DO NOT PUT ON KNOB OR BOLLOCKS!
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DIY Si
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| posted on 17/2/06 at 11:27 PM |
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If you've got the space a better bet is a Watt's linkage. Completely removes sideways movement of the axle by using two shorter bars which
pivot on a rod/bar mounted to the diff casing. Can't figure out how to attach a drwaing but someone might be able to do it for me?
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omega 24 v6
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| posted on 17/2/06 at 11:48 PM |
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I know what you mean Si. Don't think I have the room though
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caber
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| posted on 18/2/06 at 12:09 AM |
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You can also do a Watt's linkage byy fixing the pivot to the chassis and the two arms to the ends of the axle. This should be possible in a
locost chassis by locating a plate in front of the tank and fixing it to Y and bracing it to W1 and W2. I think you could omit Z but it is adding more
weight.
Also depends if you prefer using an 18th century invention, The Watt's linkage, invented by James Watt for converting the rotational movement at
the end of a beam to the vertical movement of the steam engine cylinder, or a 20th century invention actually designed for car suspension, Panhard as
in the slightly whacky French cars
Caber
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gazza285
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| posted on 18/2/06 at 01:03 AM |
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Watt's this (poor pun there, but I'm completely unrepentant). Are you saying that a device designed in the 1800s before the bean counter
took over is better than a device that's cheaper to make but less correct in engineering outlook?
Designed for suspension? No. Designed for ease of manufacture? Yes.
DO NOT PUT ON KNOB OR BOLLOCKS!
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C10CoryM
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| posted on 18/2/06 at 03:36 AM |
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Watts link are "better" for cars with a lot of wheel travel. Having said that, they are sort of pointless IMO because most cars with lots
of wheel travel are not really concerned with a little sideways movement of the axle. They also move with a slight S shape, not perfectly straight.
In a street toy I generally like to see 6" total wheel travel to suck up the rough roads. If you keep the panhard bar as long as possible there
is not much movement over 6" of sweep. The main things to worry about on a panhard bar are: keep it as long as possible, keep it level at ride
height, and keep it from binding. Remember that your axle moves in an arc as well when veiwed from the side. The axle is going to move front/back
and the panhard bar has to go with it or it will bind. Ideally you mount the panhard bar parrallel to the axle in the middle of that front/back
movement at ride height. Not really worth worrying about though unless you are obsessed like me .
Also keep in mind most of my experience is with larger/heavier vehicles than Sevens.
Cheers.
"Our watchword evermore shall be: The Maple Leaf Forever!"
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