Subject	rotational inertia is not a factor to be concerned with.
Posted by	scubasteve (rebuilding) on May 25, 2005 at 2:30 PM
	This message has been viewed 38 times.
In Reply To	That rotational inertia is more important than you think... posted by PennStateZ on May 25, 2005 at 01:38 PM
Message	the unsprung weight (anything that goes up and down from suspension travel ... wheels, tires, brakes, rotors etc) is a factor but IMO its neglible on heavy cars like supras, zs, bmws, etc. The lighter the unsprung assembly the quicker it can react to road imperfections. I don't know anyone who complains about the suspension not doing a good enough job on the z32. The biggest complaint is weight of the car. Lightening the car itself improves handling waayyy more than lightening the unsprung assembly. Eventually your car becomes so light you NEED a lighter unsprung assembly to go with it. Like that will ever happen with our cars. --.scubasteve.-- (Rebuild started: April 2004. estimated completion: huhu pull my finger huhu huhu)
Follow Ups	Wheels - SeekingZ 14:40:22 05/24/05 Well that 2nd question is a oxymoron. - Tissan© 14:47:49 05/24/05 False - maglito 17:14:08 05/24/05 are 18's really going to help you on the track? (n/m) - SimplyZ(MD) 14:52:53 05/24/05 Why 18's? (n/m) - PennStateZ 14:53:16 05/24/05 Re: Why 18's? - SeekingZ 15:17:59 05/24/05 You can't fit those under 17s? - PennStateZ 15:20:34 05/24/05 So Porsche, Viper, Z06, M3's 350Z, etc,etc got it all wrong? (n/m) - ZBlacktt 15:58:29 05/24/05 yes (n/m) - Guapo 16:03:25 05/24/05 lol, So did AMG, Audi, Mazda RX-8, Murcielago, VR4 - ZBlacktt 17:07:32 05/24/05 we are talking about the Z32. (n/m) - Spee 18:15:50 05/24/05 no (n/m) - maglito 17:30:34 05/24/05 ?? That is a stupid statement. - PennStateZ 16:32:36 05/24/05 don't forget a heavier tires on smaller wheels. - SuparexTT 16:42:15 05/24/05 Stupid to you? - ZBlacktt 17:10:30 05/24/05 I'd like to add that my occasional TRACK set-up uses 18" - Scotts94z32 16:18:52 05/25/05 Nice to see the ones that track reply (n/m) - ZBlacktt 17:04:59 05/25/05 ok smart guy, what do any of those cars have to do with a Z? - Spee 18:14:37 05/24/05 Drama Queen? - ZBlacktt 20:04:05 05/24/05 whether or not you have a point.... - maglito 21:45:48 05/24/05 . - maglito 23:20:23 05/24/05 heh (n/m) - PennStateZ 23:30:31 05/24/05 again, who are you? (n/m) - ZBlacktt 03:01:21 05/25/05 m a g l i t o (n/m) - maglito 08:48:24 05/25/05 lol, oh,, ok. Sorry still getting use't to your name here. (n/m) - ZBlacktt 10:05:56 05/25/05 WTF are you talking about? - PennStateZ 10:14:52 05/25/05 I've been reading this site for 3 years - maglito 11:16:30 05/25/05 LOL - PennStateZ 13:26:45 05/25/05 Clearly you don't get it. - Spee 23:28:52 05/24/05 We know each other well, good carry on. (n/m) - ZBlacktt 03:02:20 05/25/05 its NOT irrelevant. its a very good question he is asking. - scubasteve (rebuilding) 11:48:26 05/25/05 I was thinking about that as well. - ZBlacktt 12:56:30 05/25/05 weight and tire cost. Get some 17x9s w/ 275/40/17 tires - boileralum 15:20:37 05/24/05 beat ya :) (n/m) - PennStateZ 15:21:45 05/24/05 On timing, but not on details ;) (n/m) - boileralum 16:06:43 05/24/05 well... - PennStateZ 16:33:53 05/24/05 Re: weight and tire cost. Get some 17x9s w/ 275/40/17 tires - SeekingZ 15:23:55 05/24/05 Yeah, look into it! They'll be much better at the track (n/m) - SeedyROM 15:27:27 05/24/05 Stoptechs fit under 17" rims. (n/m) - Guapo 16:03:10 05/24/05 probably not every single design though ;) (n/m) - boileralum 16:07:27 05/24/05 no, but I only care about one .... :) - Guapo 16:12:47 05/24/05 What do you use for a Spare, AAA :) (n/m) - ZBlacktt 17:26:48 05/24/05 heh, i never thought about that. You can ditch some - rufflez 17:47:57 05/24/05 yes (n/m) - Guapo 17:49:16 05/24/05 He can always bring the back wheel to the front - ZXRider(SoCal) 17:54:30 05/24/05 and put two jacks or two stands in the car too? (n/m) - ZBlacktt 20:20:35 05/24/05 you don't know how to jack up an entire side of a car? (n/m) - Guapo 20:25:15 05/24/05 post picture's :) (n/m) - ZBlacktt 20:35:27 05/24/05 You're so fond of reminding everyone how long you've been - Guapo 20:41:24 05/24/05 I believe this would be more appropriate... - Spee 23:35:56 05/24/05 There ya go again. Captain Original - ZBlacktt 03:40:11 05/25/05 Do I have to type it out for you? ( teasing ) - ZBlacktt 03:36:06 05/25/05 so in other words, you don't know. Thats what I thought. (n/m) - Guapo 10:09:12 05/25/05 Yes, you do. (n/m) - PennStateZ 10:18:31 05/25/05 ...why? it's really simple - ZXRider(SoCal) 22:18:49 05/24/05 thats too simple :) (n/m) - Guapo 22:20:40 05/24/05 Ya true, and us 300ZX drivers can't have simple :) BTW - ZXRider(SoCal) 22:52:57 05/24/05 Doesn't work w/ an 18x10 w/ 285/35/18 tires in the back ;) (n/m) - boileralum 10:14:22 05/25/05 do you have any speedo problems with those? - PennStateZ 10:39:32 05/25/05 I don't with mine, I run that size. (n/m) - ZBlacktt 13:05:06 05/25/05 If you use 285/35-18, its off. (n/m) - maglito 13:20:09 05/25/05 Thought so, wasn't sure though... - PennStateZ 13:41:22 05/25/05 I will catch the next Dyno run on video for you. (n/m) - ZBlacktt 14:53:23 05/25/05 I am not talking about a huge difference... - PennStateZ 13:28:43 05/25/05 Yea - ZBlacktt 14:58:38 05/25/05 How do you explain that? - PennStateZ 15:08:16 05/25/05 Depends on what stock size tire you run - ZBlacktt 15:21:08 05/25/05 If you run the stock tire size on the 16" wheel, - PennStateZ 15:23:51 05/25/05 Correct, but as you see. I don't. (n/m) - ZBlacktt 15:28:04 05/25/05 OMG - PennStateZ 15:31:46 05/25/05 Try AIM, this isn't working ( clearly ) - ZBlacktt 16:05:37 05/25/05 Re: no, but I only care about one .... :) - SeekingZ 19:38:00 05/24/05 Enkei RP-01 (n/m) - Guapo 20:17:35 05/24/05 What is this world coming to when I agree with Zblacktt - maglito 17:29:30 05/24/05 Re: What is this world coming to when I agree with Zblacktt - SeekingZ 19:53:04 05/24/05 Please, leave the names out and just post information :) - ZBlacktt 20:28:30 05/24/05 OK, I'll play. - Guapo 20:39:00 05/24/05 my point was only somewhere between 17 and 18 is ideal - maglito 21:15:19 05/24/05 excellent :) (n/m) - Guapo 21:20:57 05/24/05 Staying out of this one...arguement wise. - BooZTT (Hawaii) 22:59:47 05/24/05 Agreed, the standard OEM rims are getting bigger. - ZBlacktt 03:17:33 05/25/05 I agree w/ Guapo still... - PennStateZ 21:31:23 05/24/05 Rememeber, we are keeping names out of it. - maglito 22:16:13 05/24/05 I never said anything about keeping names out of it. - PennStateZ 23:08:03 05/24/05 agreed - maglito 23:15:19 05/24/05 Ok, you seem to have tunnel vision - ZBlacktt 03:31:21 05/25/05 again ... - Guapo 10:15:27 05/25/05 lol - ZBlacktt 13:03:30 05/25/05 Tunnel vision? - PennStateZ 10:16:46 05/25/05 The sad thing is - SeedyROM 10:58:25 05/25/05 Well here's a point - ZBlacktt 12:38:07 05/25/05 sadly, I agree - maglito 13:29:18 05/25/05 2nd - ZBlacktt 14:51:11 05/25/05 his username is "spee" not "spree" - maglito 15:07:30 05/25/05 lol, mistake, I just guest without looking. No biggie (n/m) - ZBlacktt 15:26:55 05/25/05 Here's a point. - PennStateZ 13:51:43 05/25/05 ding! (n/m) - Spee 17:18:02 05/25/05 You've convinced the entire community here as well - ZBlacktt 18:20:00 05/25/05 WOW. (n/m) - PennStateZ 22:29:03 05/25/05 17" tires weigh more than 18" tires. - scubasteve (rebuilding) 12:14:38 05/25/05 Why can you install 20" wheels on a C5 butnot on a Z32? (n/m) - Guapo 12:31:00 05/25/05 Because they were designed to allow for a larger wheel+tire - maglito 12:53:06 05/25/05 That rotational inertia is more important than you think... - PennStateZ 13:38:13 05/25/05 I understand your point, but I think the diffenence is small - maglito 13:47:43 05/25/05 Not really. - PennStateZ 13:57:28 05/25/05 Fine - maglito 14:06:53 05/25/05 You took it wrong. - PennStateZ 14:13:39 05/25/05 Cool, just remember maglito != zblacktt - maglito 14:23:09 05/25/05 I know - PennStateZ 14:29:06 05/25/05 ok, lets talk - ZBlacktt 14:43:13 05/25/05 ok, here's a game. what size wheel does formula 1 use? (n/m) - Guapo 15:11:33 05/25/05 No, see that wouldn't count... - PennStateZ 15:26:45 05/25/05 ... - PennStateZ 15:16:45 05/25/05 17" guys can do that :) - ZBlacktt 15:39:55 05/25/05 That is the kind of test that needs to be done... - PennStateZ 15:50:23 05/25/05 right - ZBlacktt 15:55:54 05/25/05 You asked if all those manufacturers "got it wrong" - PennStateZ 16:04:08 05/25/05 ok last try - ZBlacktt 16:57:47 05/25/05 LOL :) - ZBlacktt 14:36:53 05/25/05 I was referring to your incesent name calling and personal - maglito 14:44:57 05/25/05 Really? Look again, because I see that it's not. (n/m) - ZBlacktt 15:10:44 05/25/05 This thread is an example. - PennStateZ 15:18:36 05/25/05 Really? - ZBlacktt 15:23:08 05/25/05 Thanks for proving my point. - PennStateZ 15:29:16 05/25/05 likewise - ZBlacktt 15:48:06 05/25/05 If price is not a factor for him, - PennStateZ 15:51:47 05/25/05 rotational inertia is not a factor to be concerned with. - scubasteve (rebuilding) 14:30:25 05/25/05 Rotational inertia would affect acceleration... - PennStateZ 15:06:26 05/25/05 you CAN install a 20" wheel on a z32. (n/m) - scubasteve (rebuilding) 14:18:19 05/25/05 You could install a 26" wheel... - PennStateZ 14:21:07 05/25/05 neither if the same amount of sidewall is used on each - scubasteve (rebuilding) 14:39:48 05/25/05 there is only ONE 35 series 17" tire on all of tirerack. - maglito 12:41:43 05/25/05 I use 40 series. (n/m) - Guapo 15:13:08 05/25/05 I know - maglito 15:40:36 05/25/05 Whoa! not to get off subject, but is that worth $4K? (n/m) - ZBlacktt 16:01:33 05/25/05 thank you. (n/m) - scubasteve (rebuilding) 11:53:41 05/25/05 Don't forget - SactoTodd 16:00:06 05/24/05 about 25 lbs - SuparexTT 16:39:45 05/24/05
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