Guest badkarma Posted May 3, 2005 Share Posted May 3, 2005 Anyone measure the motion ratio on the Supra? I made an attempt and came up with .6058 for the front and .8235 for the rear. In comparison, another owner measured .55 front and .72 rear. Link to comment Share on other sites More sharing options...
heckler Posted May 3, 2005 Share Posted May 3, 2005 Erm... what motion range? Link to comment Share on other sites More sharing options...
Guest badkarma Posted May 3, 2005 Share Posted May 3, 2005 Erm... what motion range? Motion Ratio of the suspension. It's basically the ratio on shock/spring travel vs wheel travel. So .55 means the shock/spring travels .55inches for every 1inch of wheel travel. This value along with spring rates, unsprung/sprung corner weights is required to calculate suspension frequency. Link to comment Share on other sites More sharing options...
Max Headroom Posted May 3, 2005 Share Posted May 3, 2005 ?????????? Just gone straight over my head. Why do you want to know motion ratio? Link to comment Share on other sites More sharing options...
Digsy Posted May 3, 2005 Share Posted May 3, 2005 I think he means the lever ratio between the wheel movement and the spring compression. The wheel is (obviously) further away from the wishbone pivot point than the spring, so when you lift the wheel it will move further than the base coil of the spring. ...and no, I don't know what it is Link to comment Share on other sites More sharing options...
Chris Wilson Posted May 3, 2005 Share Posted May 3, 2005 It enables a meaningful comaprison of spring rates from different vehicles and the damper motion ratio allows similar comaprisons of damper effort. I do have these figures but as I had to go to some consderable rouble dismantling and measuring everything it's one of the things I keep in house. I share most info and tips but being a commercial operator I have to put a price on my time for some of the more hard to acquire knowledge. I only post here, not to wind anyone up, but if I don't, people might think how come CW has designed a suspension set up of his own if he hasn't got this info ....? Link to comment Share on other sites More sharing options...
eyefi Posted May 3, 2005 Share Posted May 3, 2005 but if I don't, people might think how come CW has designed a suspension set up of his own if he hasn't got this info ....? the thought had crossed my mind Link to comment Share on other sites More sharing options...
Guest badkarma Posted May 3, 2005 Share Posted May 3, 2005 It enables a meaningful comaprison of spring rates from different vehicles and the damper motion ratio allows similar comaprisons of damper effort. I do have these figures but as I had to go to some consderable rouble dismantling and measuring everything it's one of the things I keep in house. I share most info and tips but being a commercial operator I have to put a price on my time for some of the more hard to acquire knowledge. I only post here, not to wind anyone up, but if I don't, people might think how come CW has designed a suspension set up of his own if he hasn't got this info ....? Chris, If I was a commercial operator I'd probably keep it "proprietary" as well! I'm trying to figure out how to measure the motion ratio accurately. I used a caliper gauge on the shock and eyeballed the wheel hub with a tape measure... not very accurate when you're talking about less than an inch! Any pointers? Link to comment Share on other sites More sharing options...
TLicense Posted May 3, 2005 Share Posted May 3, 2005 Hmmm I kind of disagree with all this secrecy lark. I for one want to know what it is I'm buying. I've been caught out by this too many times. I understand that research costs, but where do you draw the line? If someone is genuinely interested in buying one of your products, and asks for futher information, then not giving that information can put them off (and indeed it did for me when I enquired about the CW susp set-up - someone else's subjective opinion is, in my subjective opinion, not good enough for me me anymore ). There's a difference between information being freely available, and showing someone who is genuinely interested in making a purchase enough data for them to make an informed judgement. Perhaps they'll look at the data and walk away nonetheless. Maybe they won't. I think there are very few scrupulous people that are going to (read have the skill/contacts to) copy your work, and if they do I'm sure it would be very easy to spot. Link to comment Share on other sites More sharing options...
Chris Wilson Posted May 3, 2005 Share Posted May 3, 2005 We are all entitled to our opinion, I give a hell of a lot to this board, FOC. I decided to draw the line at the above info. My prerogative Spotting a copy doesn't exactly do me a power of good, commercially speaking! Link to comment Share on other sites More sharing options...
Max Headroom Posted May 3, 2005 Share Posted May 3, 2005 I will happily leave motion ratio to those that know, happy in the knowledge that they do and I dont need to. All hail to those. Link to comment Share on other sites More sharing options...
Syed Shah Posted May 3, 2005 Share Posted May 3, 2005 Hmmm I kind of disagree with all this secrecy lark. I for one want to know what it is I'm buying. I've been caught out by this too many times. The problem with this: Somebody does the work, then no sooner is it completed, and it is copied. Problem that then arises is that nobody is willing to spend time + £££ on RnD as it will not benefit them, as someone copying can undercut them. Bloody shame tho, I agree, as stops Joe public reading lots of good stuff. But I am sure if you really wanted to know, most would discuss in private with genuine consumers. Link to comment Share on other sites More sharing options...
martynb Posted May 3, 2005 Share Posted May 3, 2005 It enables a meaningful comaprison of spring rates from different vehicles and the damper motion ratio allows similar comaprisons of damper effort. I do have these figures but as I had to go to some consderable rouble dismantling and measuring everything it's one of the things I keep in house. I share most info and tips but being a commercial operator I have to put a price on my time for some of the more hard to acquire knowledge. I only post here, not to wind anyone up, but if I don't, people might think how come CW has designed a suspension set up of his own if he hasn't got this info ....? Link to comment Share on other sites More sharing options...
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