[Main Performance Bulletin Board | BBFAQ | Prev by Date | Next by Date | Post Followup ] Member Login / Signup - Members see fewer ads. - Latest Member Gallery Photos wheel horse improves (at the wheel) Like This Post: - Subscribe to Daily Digest for this Bulletin Board Posted by bryan [Email] (#542) [Profile/Gallery] (more from bryan) on Tue, 30 Aug 2005 17:52:29 In Reply to: To lighten flywheel or not?, David W, Tue, 30 Aug 2005 15:19:20 Alert me when someone posts in this thread: Members do not see ads below this line. - Help Keep This Site Online - Signup

if you measure horsepower at the wheel, the lower weight flywheel if properly balanced will amount in more wheel horsepower. basically, any time you trim the weight off of your rotating components in the engine and/or tranny, you allow the engine horsepower to translate more energy (torque) to the wheels. so, your efficiency increases, resulting in more power being translated from the engine through the transmission and to the wheels. the keuy here is when the engine and tranny are hooked up. the actual engine horse (at the crank, before it goes into the primaries and clutch and then the tranny) doesn't change one iota.

if i could ever finish my my teardown, i'd have something to post about the g9 flywheel unit i got. it is lightened incredibly. for example, stock is 22 lbs giv er take. the lightened fidanza is about 10. and its balanced beyond saab specs, so no worries there. taking that kind of weight out of the rotating assembly will give a noticeable efficiency. the only reason spool up is said to be better is because the engine became more nimble ("light on it's feet") under power, so it probably does spool up quicker. i can't do the math, but several out there in saabland can if you check prev. posts. the numbers have to be better at the wheel.



posted by 151.197.3...

• To lighten flywheel or not?, David W, Tue, 30 Aug 2005 15:19:20
  • Re: To lighten flywheel or not?, SteveW, Wed, 31 Aug 2005 18:29:23
  • lightened flywheel pictures, TML , Wed, 31 Aug 2005 10:16:26
  • wheel horse improves (at the wheel), bryan , Tue, 30 Aug 2005 17:52:29 <-- Viewing This Message
    • Re: wheel horse improves (at the wheel), Louie, Tue, 30 Aug 2005 19:56:26
      • Re: wheel horse improves (at the wheel), bryan , Wed, 31 Aug 2005 05:08:41
        • the extra load = more time under a load, jak , Wed, 31 Aug 2005 06:27:45
          • THE REAL QUESTION, Price, Wed, 31 Aug 2005 22:49:01
            • THE REAL ANSWER, LPG, Thu, 1 Sep 2005 13:35:09
          • that makes perfect sense...n/m, bryan , Wed, 31 Aug 2005 09:30:31
          • Re: the extra load = more time under a load, Price, Wed, 31 Aug 2005 07:17:44
            • Re: the extra load = more time under a load, TML , Wed, 31 Aug 2005 17:30:05
              • Re: the extra load = more time under a load, Price, Wed, 31 Aug 2005 22:31:21
                • Re: the extra load = more time under a load, TML , Thu, 1 Sep 2005 00:28:22
            • yes it should seem to accelerate faster in lower gears, jak , Wed, 31 Aug 2005 11:36:24
              • Re: yes it should seem to accelerate faster in lower ge, Price, Wed, 31 Aug 2005 14:59:46
            • i agree with you, tturboboy, Wed, 31 Aug 2005 08:14:50
            • rotational inertia, TML , Wed, 31 Aug 2005 08:12:38
              • Re: rotational inertia, Price, Wed, 31 Aug 2005 15:02:44
                • i t actually does, tturboboy, Wed, 31 Aug 2005 18:46:25
  • - 0 - n/m, BobD, Tue, 30 Aug 2005 17:37:45
  • Re: To lighten flywheel or not?, wward, Tue, 30 Aug 2005 15:26:51
    • Re: To lighten flywheel or not?, Kevin O, Tue, 30 Aug 2005 16:37:38
      • yeah I have a lightened steel flywheel & I like it :-), jak , Wed, 31 Aug 2005 06:29:51

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