Subject	I forgot about the diameter of drag tires
Posted by	Marshall on December 06, 2004 at 9:58 AM
	This message has been viewed 94 times.
In Reply To	Here is how the math works out...... posted by Greg D. (Specialty-Z) on December 06, 2004 at 12:59 AM
Message	:4th gear with stock gears at 7000 RPM 146 MPH :4th gear with 4.10 gears at 7000 RPM is 132 MPH :4th gear with stock gears at 7500 RPM 157 MPH :4th gear with 4.10 gears at 7500 RPM is 141 MPH :4th gear with stock gears at 8000 RPM 168 MPH :4th gear with 4.10 gears at 8000 RPM is 151 MPH :MPH = [TIRE DIAMETER x RPM] / [GEAR RATIO x 336] : :RPM = [GEAR RATIO x MPH x 336] / [TIRE DIAMETER] : :Gear ratio in these formulas represents the gear ratio in your chosen gear, times the differential gear ratios. Tire diameter on most drag race tires(ie. BFG drag radials or MT ET streets) are approximately 26". I forgot about the larger diameter for drag tires. Here's a utility that does the calculations: [ http://www.geocities.com/z_design_studio/transmission_300zx_tt.html ] So I was figuring the numbers for stock sized tires, which would give you: 4th gear with stock gears at 7000 rpm is 139mph 4th gear with 4.10 gears at 7000 rpm is 125 mph 4th gear with stock gears at 7500 rpm is 149mph 4th gear with 4.10 gears at 7500 rpm is 134mph
Follow Ups	New timeslip........ - Greg D. (Specialty-Z) 22:44:25 12/05/04 sweet times, running slicks or... - jawz 22:47:28 12/05/04 Re: sweet times, running slicks or... - Spee 22:52:27 12/05/04 10" slicks.....The mods are in my profile for the Z32 (n/m) - Greg D. (Specialty-Z) 22:53:47 12/05/04 explain - genic 22:55:06 12/05/04 That means he "changed the intake tubing." (n/m) - Kenny 23:00:19 12/05/04 Always a master of the obvious (n/m) - EricTTZ 00:12:48 12/06/04 The stock intake tubing going in and out of the turbos - Greg D. (Specialty-Z) 23:13:43 12/05/04 Stock manifolds or your inconel ones? - J.R. (phx) 08:40:25 12/06/04 They are heavily ported stockers. (n/m) - Seb (Specialty-Z) 10:02:51 12/06/04 They are heavily ported stockers. (n/m) - Seb (Specialty-Z) 10:52:58 12/06/04 so does that knock off the time kyle did awhile back? - genic 22:47:36 12/05/04 Yes....I went 10.47 @ 140 Mph..... (n/m) - Kyle(Houston) 07:57:16 12/06/04 Was that TD05+nitrous or TD06+nitrous? (n/m) - timz 08:37:02 12/06/04 TD05 + spool up nitrous + POS Level 10 tranny :-(... (n/m) - Kyle(Houston) 08:51:59 12/06/04 That awesome Kyle! (n/m) - timz 08:57:16 12/06/04 LOL..thanks...welcome to 2000.... (n/m) - Kyle(Houston) 10:10:31 12/06/04 LOL (n/m) - myzislow 11:15:59 12/06/04 Old School (n/m) - kryptonite729 11:51:28 12/06/04 good god! - tecnobnz 22:47:38 12/05/04 The info is in this post...... - Greg D. (Specialty-Z) 22:51:21 12/05/04 Doh.... green "N" to-go please! (n/m) - tecnobnz 22:52:50 12/05/04 Awesome! (n/m) - whitepearlz 22:48:58 12/05/04 Awesome Greg! What better proof than these to show - TheTwinZ (Peru) 22:57:09 12/05/04 Don't forget that he has an auto. - Marshall 23:05:08 12/05/04 I think he has them on his car now (n/m) - PunkZTT(Phoenix) 23:06:12 12/05/04 I think you're wrong. (n/m) - Marshall 23:09:24 12/05/04 I know he's wrong. :) (n/m) - ZFreak (Omaha) 23:22:18 12/05/04 i think you two are thinking too much (n/m) - PunkZTT(Phoenix) 02:22:56 12/06/04 He is planning on getting them, But they are not in yet. (n/m) - Greg D. (Specialty-Z) 23:26:51 12/05/04 It works the same on every other car stick or auto.... - Greg D. (Specialty-Z) 23:24:35 12/05/04 but it might not be a good match for every car. - Marshall 23:52:09 12/05/04 I will be better for bigger turbos and higher RPM powerband - Chip(GMS Racing) 23:56:44 12/05/04 They're probably in my car's future. - Marshall 00:07:04 12/06/04 I should clarify - Chip(GMS Racing) 00:14:43 12/06/04 Hmm, this confuses the issue a little - Marshall 10:03:04 12/06/04 All of my track based comments assume - Chip(GMS Racing) 10:41:42 12/06/04 With a sport 500 car, I was using very little of 4th - SirpriZ 12:08:34 12/06/04 You will be hard pressed to find a street TT Z ....... - Greg D. (Specialty-Z) 00:42:37 12/06/04 Re: but it might not be a good match for every car. - ZHOUND 00:53:50 12/06/04 Here is how the math works out...... - Greg D. (Specialty-Z) 00:59:42 12/06/04 Well there you have it. - ZHOUND 01:08:22 12/06/04 Are you saying the TC is locked up at WOT in fourth? (n/m) - AzHeat 02:14:31 12/06/04 I forgot about the diameter of drag tires - Marshall 09:58:32 12/06/04 holy...that is fast...awesome job. - ZXRider 23:23:14 12/05/04 I want these gears...where and how much? (n/m) - mr. zed line 23:24:35 12/05/04 www.leadergears.com (n/m) - whitepearlz 23:27:50 12/05/04 Re: I want these gears...where and how much? - Greg D. (Specialty-Z) 23:29:27 12/05/04 Greg Id like to get these but Im worried it would mean Id - ZisLuv 23:59:24 12/05/04 Re: Greg Id like to get these but Im worried it would mean Id - Greg D. (Specialty-Z) 00:51:51 12/06/04 ok, youve sold me on a set - ZisLuv 07:19:46 12/06/04 SO I am trying to understand something>>> - ZMEGOBY® 10:44:51 12/06/04 If I may address your question. There is a limit to gearing - SirpriZ 11:50:12 12/06/04 It is fairly normal to look at .......... - Greg D. (Specialty-Z) 01:39:53 12/06/04 lol...are you saying your willing to give me a ride in it? - ZXRider 02:26:40 12/06/04 I'm sure he'd give anyone a ride if they paid for the - KaZ (VaBch) 08:28:12 12/06/04 Actually Greg has a somewhat sadistic history of - SirpriZ 11:31:44 12/06/04 That sounds like me! :) (n/m) - Spongerider :) 11:51:26 12/06/04 Hi Dean, been missing your presence at these little - SirpriZ 12:11:36 12/06/04 I really would like to hang out with you guys but - Spongerider :) 12:17:26 12/06/04 I've been in that car...you are gonna $%&t your pants lol (n/m) - TheTwinZ (Peru) 11:48:23 12/06/04 oh !#@$ lol...well I can't give up an oppertunity to - ZXRider 12:29:40 12/06/04 fantastic... - MarkA(NoVA) 00:01:35 12/06/04 Best of luck with it! (n/m) - Greg D. (Specialty-Z) 01:31:38 12/06/04 who all from Bakersfield came? (n/m) - fourZero 00:40:13 12/06/04 Nick and Lee came over to join us. (n/m) - Greg D. (Specialty-Z) 00:54:25 12/06/04 great job! - Stang Raper 00:46:02 12/06/04 We miss having you out with us! - Greg D. (Specialty-Z) 01:01:17 12/06/04 Did you get a video? - Letterdawg 01:09:58 12/06/04 I am not a camera person, But it has been fairly common for - Greg D. (Specialty-Z) 01:30:21 12/06/04 I don't want to turn this into a hugfest, but my "help" - SirpriZ 01:09:59 12/06/04 Thank You for the kind words! (n/m) - Greg D. (Specialty-Z) 01:25:36 12/06/04 Greg, has your shop considered... - maglito 01:15:30 12/06/04 Re: Greg, has your shop considered... - Greg D. (Specialty-Z) 01:24:02 12/06/04 you can always outsouce some work to china - maglito 01:37:11 12/06/04 You Crazy! (n/m) - Greg D. (Specialty-Z) 01:43:05 12/06/04 sick! - SaipanZ(MP) 01:18:46 12/06/04 Thank You (n/m) - Greg D. (Specialty-Z) 01:33:36 12/06/04 damn man. NICE! (n/m) - spotz 01:29:24 12/06/04 Thanks Chris.....Hope you can join us soon. - Greg D. (Specialty-Z) 01:32:55 12/06/04 totally AWESOME Greg! - rave 01:37:57 12/06/04 Thanks! (n/m) - Greg D. (Specialty-Z) 01:43:34 12/06/04 Congrats Greg! - FlawleZ (San Antonio) 02:05:38 12/06/04 Awesome Greg..Congrats... (n/m) - Pats300zx 05:30:52 12/06/04 sweet! (n/m) - joel(PA) 08:30:07 12/06/04 Congrats... I can't imagine what that feels like - KaZ (VaBch) 08:36:42 12/06/04 1.494 60ft!! Awesome!! How many shot of nitrous? (n/m) - timz 08:38:21 12/06/04 Good job again Greg. I hope to be out with you - 1BADTTZ (So Cal) 09:58:58 12/06/04 Wow!!! (n/m) - Spongerider :) 10:38:53 12/06/04 cant wait to get out there with you guys, congrats - UnrulyZX 10:39:38 12/06/04 Thats awesome Greg! (now I wait for more 5-speed results) (n/m) - Z-Jay (Edmonton, AB) 12:12:14 12/06/04 awesome greg! (n/m) - Playboy 16:00:27 12/06/04 Dammit, I knew about it but forgot all about it until 4:30 - mds2004 15:08:08 12/08/04
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