Boost Junky 1 Report post Posted June 11, 2009 (edited) WHOA! I think this project needs to be moved to the NASA section Henry +1 DO A SKID Amen Riley & Max Edited June 11, 2009 by Boost Junky Quote Share this post Link to post Share on other sites
kingkarl 136 Report post Posted June 11, 2009 If that 18 kgs was on the roll center, there would be a torque of 0 Nm. So it makes sence to get all weight centralised. That's why I'm not taking out the floor sound deadening. Being below the roll centre (I believe) It actually helps roll the car into the corner (it helps the centre of gravity stay low, if it was taken out the CoG would rise), not out of it (think, like a motorbike) I don't see how keeping weight in a car will make it corner better, regardless of how high/low it is. My extremely limited understanding of physics tells me that centripetal force = (m*v^2)/r. So reducing the mass of the car, will always reduce the centripetal force pulling it to the outside of the corner. Meaning the tyre's will handle a higher cornering speed before letting go. Dunno if that's logical or not. Quote Share this post Link to post Share on other sites
Mike 1 Report post Posted June 11, 2009 damn engineers just showin off when you going to start fabbing up your own suspension arms for optimum geometry huh? amateur. seriously good sh*t, thing will handle like a bloody go-kart, mine was impressive enough with soft-ish springs and standard swaybars Quote Share this post Link to post Share on other sites
|ncary 0 Report post Posted June 11, 2009 Will follow up on the roll centre discussion later.. Just a quick UPDATE from the iPod: Stuspenshin is coming. On USPS. When I got the AKG stuff sent on USPS, it took 5 working days... Wish me luck in not getting stung with too many taxes!! Quote Share this post Link to post Share on other sites
|ncary 0 Report post Posted June 11, 2009 I don't see how keeping weight in a car will make it corner better, regardless of how high/low it is. My extremely limited understanding of physics tells me that centripetal force = (m*v^2)/r. So reducing the mass of the car, will always reduce the centripetal force pulling it to the outside of the corner. Meaning the tyre's will handle a higher cornering speed before letting go. Dunno if that's logical or not. Yes, you're right about the centripetal force. But having a centre of gravity that is closer to the suspensions roll center is beneficial too. It more evenly spreads the weight over each side set of tires during cornering. To take this point to the extreme: Imagine a broom. If you hold the handle and have the sweeper end in the air (CoG far from the roll centre) and then run around in circles, you will get a hell of a lot of torque acting through your hand (the roll centre), if you take the same broom and hold the sweeping end and do the same thing, that roll effect is much less. Same principle as I'm trying to apply. Also, imagine if the CoG was lower than the roll centre.. The car would 'swing' into corners just like a motorbike. Hard to understand but it happens. Nearly impossible to acheive though. I'll try and design perfect suspension in my later years here at Uni... In the end I'll be lightening the car a hell of a lot and the sound deadening will go haha, but for now I know it's not too detrimental having it in. Gustave explains roll centre and lowering well: http://www.e30m3project.com/e30m3performan...ht_transfer.htm As well as a heap of other things. Great site. He chooses Ground Control for his M3 http://www.e30m3project.com/e30m3performan...sp/GC_susp1.htm Quote Share this post Link to post Share on other sites
|ncary 0 Report post Posted June 14, 2009 This was 19 hours ago. Should be in Auckland before the Le Mans 24 hour finishes! Label/Receipt Number: CPxxxxxxxxxxUS Class: Priority Mail International Parcels Service(s): International Parcels Status: International Dispatch Your item left the United States from ISC SAN FRANCISCO (USPS) at 7:57 AM on June 13, 2009. Information, if available, is updated periodically throughout the day. Please check again later. Detailed Results: 3. International Dispatch, June 13, 2009, 7:57 am, ISC SAN FRANCISCO (USPS) 2. Arrival 1. Acceptance, June 11, 2009, 2:51 pm, SHINGLE SPRINGS, CA 95682 Quote Share this post Link to post Share on other sites
Forrest 35 Report post Posted June 14, 2009 ^ I <3 live tracking updates Quote Share this post Link to post Share on other sites
|ncary 0 Report post Posted June 14, 2009 Cannot wait to get this kit in my hot little hands. I'll be one of the first with the newly re-designed camber-caster plate (oh and Riley ) There will be plently of pics ahaa. With symmetry. Quote Share this post Link to post Share on other sites
Nobimmer 694 Report post Posted June 15, 2009 Nice build mate. Quote Share this post Link to post Share on other sites
Boost Junky 1 Report post Posted June 15, 2009 Finally on their way Henry! be good to see some more progress on the suspension side of things! Hows that sunroof fix coming along? Quote Share this post Link to post Share on other sites
|ncary 0 Report post Posted June 15, 2009 Just busy as at the moment studying Will be seeing a fi-glass person this week I hope. The sunroof fix is almost as exciting as the coilovers ahaa. I think I'll get the cap made in black. Satin black. Quote Share this post Link to post Share on other sites
Boost Junky 1 Report post Posted June 15, 2009 Of course you are haha! Good to see your priorities are in teh right order though Henry Lol well thats good cause thats what will keep you motivated to finish it off, I know alot of the things ive done in my project havnt been that exciting to get past but had to be done Quote Share this post Link to post Share on other sites
|ncary 0 Report post Posted June 17, 2009 UPDAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAATE Goods are in Auckland. I got a letter from customs. Just been into the customs house here and paid the GST. Ouch... TOMORROW OR FRIDAY YUS YUS YUS Quote Share this post Link to post Share on other sites
Guest Simon* Report post Posted June 17, 2009 GST on imported goodies = FTL New goodies coming soon = Quote Share this post Link to post Share on other sites
JiB 2 Report post Posted June 17, 2009 Goods are in Auckland. I got a letter from customs. Just been into the customs house here and paid the GST. Ouch... I feel your pain! I remember the GST on my kit was somewhat substantial as Quote Share this post Link to post Share on other sites
drifty325i 0 Report post Posted June 17, 2009 YES cant wait for a new toy!!! Quote Share this post Link to post Share on other sites
|ncary 0 Report post Posted June 19, 2009 It's here It's here It's here It's here It's here It's here It's here It's here It's here I'm giddy. This is amazing gear. The quality, the design, the colours. So many bits to play with. Pics soonish Quote Share this post Link to post Share on other sites
|ncary 0 Report post Posted June 19, 2009 A box greeted me.. A mess was made.. Hells yes. The whole kit. Test fit, lowest height. Wound right up. Going to have about 3-4 inches of wheel travel. Excellent. Perfect balance will be attained. Front mock up. All there has to be done now to get it on the ground again is: Half Shafts gunned up. (Untill I can get the car down again and torque the nuts) Cut the spring perch off and weld the new perch on the bead of the old perch. Won't be shortening the housings yet. Oh, and install all these new bits. Might have a chilly head untill the sunfoof gets capped though ahaa. Jealous? Quote Share this post Link to post Share on other sites
JiB 2 Report post Posted June 19, 2009 Quality awesome huh? Quote Share this post Link to post Share on other sites
|ncary 0 Report post Posted June 19, 2009 Toally Quality Awesome Quote Share this post Link to post Share on other sites
Jamez 2147483647 Report post Posted June 19, 2009 nice! I wish I had some cash spare to do a project similar to yours Quote Share this post Link to post Share on other sites
|ncary 0 Report post Posted June 19, 2009 I'll trade you my awesome fun project for yours????? Get one of these kits for your S50 build. Will have full, detailed report once I've thrashed the summit rd with it. Quote Share this post Link to post Share on other sites
JiB 2 Report post Posted June 19, 2009 I thrashed Kemp Rd hillclimb with mine, even with my WTFBBQTIMEATTACK spring rates it dealt to broken surfaces quite well. Your spring rates would make it sublime! Did they dyno match the shocks and springs for you too? Welcome to t3h GC squad y0! Quote Share this post Link to post Share on other sites
|ncary 0 Report post Posted June 19, 2009 Yeah I did get the custom valving. I know now the order took a couple of weeks to send because of my longer special order springs, which is ok. I hear fantastic things about the custom matched valving, things like you just said, so can't wait to scrape the Tech1 on some cliff roads ahaa Quote Share this post Link to post Share on other sites
CamB 48 Report post Posted June 19, 2009 (edited) the colours Haha - 'tis true. Helpful tip - some of those fasteners are 'Merican - you'll need a 1/2" or 7/16", and I think the allen key bolt to adjust the rear height might be imperial too. Edited June 19, 2009 by CamB Quote Share this post Link to post Share on other sites
