thehelix112

Hehe.. explicit irony. Dave

Awesome Pete. Keep us informed. Dave

Confusing that you switched colours between graphs. Looks both more powerful, and more usable (wider flatter torque curve). Nice work, Dave

John, Any more progress than this: http://www.geocities.com/boodlefoof/Project_Racer-Zfiberglass6.html Going to be one interesting car! Dave

Hahaha. Dave

Hehe.. I have no idea how to do it, but that doesn't mean it shouldn't be done. I would be surprised if there is no way to predict these things. I'm sure there is some FEA software out there somewhere that incorporates elastic deformation, yield point and plastic deformation behaviours. Sorry to sidetrack Jon. Dave

I think I understand what you're saying John, but surely you don't think that any cage, anywhere will not deform if the metal involved is pushed beyond its yield point. I would think it prudent to take the failure of a cage in the event of an impact beyond its intended use into account when designing it no? Dave

A couple of things spring to mind. I don't pretend to be `in' with the racing crowd, but a look at some professional teams view of gussets might be an indication one way or another. Also, it would seem that having the tubes slightly away from the chassis (pillars are what I'm thinking of primarily) and gussets inbetween provides yet more material to crumple/absorb energy in the event of a crash. Something hits pillar, pillar crumples gusset against tube, tube absorbs the rest. Anything wrong with my train of thought here? I think I'll be using them. Dave

I must've watched the start vid 4-5 times now and each time the `SCCA Road Racer' comment rings true and makes me want to see it on a track, without those pesky bloody mufflers. Dave

Hahahaha. Dave

Congrats, it is a beautiful car. I can't wait to see it with airfoil/diffuser. Please include underbelly shots too. Dave

http://www.twinturbo.net/net/viewmsg.aspx?forum=general&msg_id=2057491 Whole lot more pictures there for the fanboys. I love the look for the car, but I do have some criticisms (all based on the assumption that you plan on driving/racing it). 1. Those tyres (if sticky) are FAR too wide for struts. You will bend/break/wear them at an awful rate I fear. 2. http://i159.photobucket.com/albums/t139/kirkwoodloyal/DeckJays240023.jpg That is some serious angle on the LCAs. I fear you're going to be getting some serious camber gain and roll centre dropping through the ground as it stands. Aesthetically that is top notch, and reaffirms my own dreams of a black 280YZ. Great work. Dave

You guys rock. Keep it up. Dave

You say ^^^^. I hear ``I'm a old person with lots of tools and a big shed, and far too much spare time''. Dave

Christ. I didn't see you were running a T51R-SPL until just now. Thats impressive. You don't have a boost vs rpm log by any chance do you? I'd be curious to see it. Can't wait to see a run with 30psi and 8000rpm. Dave

I wish you luck boosted. I am far too stubborn (and patient) to compromise what I want. Unfortunately I am also far too on the wrong side of the pacific to do much except plan. I will let peoples know when I get something resembling a model together. Dave

The key to a functional diffuser is what you can't see. Ie, all the flow on the underside leading up to the point it becomes visible. If the flow is completely turbulent 10" after the front bar, a lovely neat rear diffuser like that isn't going to do much. At the very least you'd want a flat underside, with attention paid to the front splitter/air dam, and you need to be very careful to ensure the flow in the diffuser remains attached. That means ensuring that the transition where the it goes from flat into diffuser is perfect (not a raggley weld), and that the angle of the diffuser is not too steep. Dave

Doesn't look like semi-trailing arm to me. Looks like a typical uneven-length double wishbone setup. Impossible? Please. Dave

I wish I could be of more help to a fellow antipedian. As it is all I can do is wish you luck. Also consider posting on http://www.viczcar.com perhaps. Oh, and when he says Holden, he means GM. Dave

Dammit. I just don't get the time required to study and understand the things in there. Took me over a month to get through the Tyre chapter. I don't like skimming, I read it over and over until I understand it. Perhaps I'm just dense. I'm not entirely sure if you're being sarcastic regarding the tyre specifity, but I'll assume not. I don't have an answer, but would hope to build in enough adjustability to have freedom of tyre choice. The brakes I have planned will fit under 15s, so once again, wheel size will be a tuning factor. I guess what I'm getting at is I don't have a good start point, nor do I really know how to go about picking one. So perhaps I'll just observe this thread for a while. I am curious now as to the pros and cons of scrub vs KPI, will go look that up. Long control arms makes sense. Dave

Ah cool. Enjoy, Dave

rahail240, Lighten up or piss off mate. I highly doubt you will need to roll the guards with a 205 tyre on the rear. As for wheel clearance. 8.5 in -6 gives you 4.98" of backspacing, which I am pretty sure will fit. Been a while since I saw my car. Dave

An OEM single would be a bad idea for me. A main motivation for double wishbones (assuming thats what this thread/project will be about) is the ability to run wider wheels and tyres, and improve cornering. I am much more interested in a spindle designed to deal with the loads hot 12" slicks produce, than one designed to cope with warm 8" hard road tyre loads. First of all, does anyone have a recommendation for a good/authoritative book on chassis/suspension design? Please don't say Milliken & Milliken as then I really will have to go continue reading it. Dave

Jeez that takes a really long time to come on. I haven't been following your build sorry, what mods are done to the engine? I'm guessing its maybe still 2.6L? Dave

Justin, Do you have the COSMOSMotion SW package? Dave