NW76 499 Posted July 5, 2017 Report Share Posted July 5, 2017 Good Morning, I always wondered if it "hurts" the engine at all to run into the rev limiter or to even stay at the limiter for a couple of seconds (on track). On some tracks (e.g. Spa or Bilster Berg) I found it to be faster to stay at the limiter for a short period of time than to short shift or briefly up shift. I do not think this should cause any damage or excessive wear to the engine as the limiter is there to protect the engine ... but as I am not a engineer and I had a conversation recently with a Lotus Sales Guy in Germany that was insisting that this is a big "no go" and might even cause Lotus to decline waranty if it is done frequently?!? ... I am a little confused... I still firmly believe I am right but I wanted to get some other opinion on that... Thanks for your help ;-) Cheers Norbert Quote Link to post Share on other sites
mik 391 Posted July 5, 2017 Report Share Posted July 5, 2017 Pretty pointless having a limiter if it doesn't come in before you might cause damage. I certainly wouldn't hold the car on the limiter, but bouncing off it occasionally can't be bad. In my experience (and speaking very generally) engines have usually given their best before this point so it's not something I intentionally do. 1 Quote Link to post Share on other sites
vd9 149 Posted July 5, 2017 Report Share Posted July 5, 2017 The answer depends quite a bit on how the cut is implemented - ignition cut or fuel cut or both at the same time or both sequentially. If it does stop injecting mixture at some point but is also cooled appropriately then I can't see anything too bad happening from the cut. 1 Quote Link to post Share on other sites
French Frie 401 Posted July 5, 2017 Report Share Posted July 5, 2017 and, just like for the PIWIS for P cars, the time when max RPM is hit, is recorded and can be used to object warranty ... and if it goes like P cars, buyers can be a little obsessed with that ! 1 Quote Link to post Share on other sites
NANO 128 Posted July 5, 2017 Report Share Posted July 5, 2017 Personal opinion: a limiter as the word says - it limits you - so it comes in early ... and you should get away so as not to cause you damage to the engine.As previously mentioned by someone, it is true that at that point you are in the threshold where you no longer receive the power you need but, in fact, you are in the process of falling ... and then detaching ... 1 Quote Link to post Share on other sites
NW76 499 Posted July 5, 2017 Author Report Share Posted July 5, 2017 --> at 2:00 min you can see what I mean ... at the limiter for 1.5 sec ... no chance to shift but still not at the breaking point ... Quote Link to post Share on other sites
trcm 132 Posted July 8, 2017 Report Share Posted July 8, 2017 Mmmm, a garw dash Quote Link to post Share on other sites
Seriouslylotus 450 Posted July 8, 2017 Report Share Posted July 8, 2017 On 05/07/2017 at 17:59, NW76 said: --> at 2:00 min you can see what I mean ... at the limiter for 1.5 sec ... no chance to shift but still not at the breaking point ... Shift early, you have enough torque to do so. You will find laps are quicker!! 1 Quote Link to post Share on other sites
French Frie 401 Posted July 8, 2017 Report Share Posted July 8, 2017 5 hours ago, trcm said: Mmmm, a garw dash Nope... a AIM one ! The "GARW" dash has still to be released ... 2 Quote Link to post Share on other sites
trcm 132 Posted July 8, 2017 Report Share Posted July 8, 2017 Ahha, I've only seen the older monochrome AIM dashes before. things have moved on quite a bit I see! Quote Link to post Share on other sites
NW76 499 Posted July 8, 2017 Author Report Share Posted July 8, 2017 Correct ... its an AIM MXs: http://www.aim-sportline.com/eng/products-car/mxs/index.htm Quote Link to post Share on other sites
Jack 547 Posted July 8, 2017 Report Share Posted July 8, 2017 FWIW: I can't comment on the V6 with any authority, but i do know that with the Toyota 2ZZ motor (S2 Elise/Exige/211) bouncing off the rev-limiter is not recommended. While the rev-limiter is designed to prevent a serious/catastrophic over-rev, the 2ZZ rockers have been known to fail/break with the cause attributed to excessive rev-limiter engagement. I can't say the same applies to the V6 Toyota rockers, but I try not to bounce off the limiter on a regular basis. 1 Quote Jack2008 2-Eleven2015 Exige V6 CupR Track videos ... http://www.youtube.com/jackcup2010 Lotus Challenge Series ULTRA Class champion2012 Lotus CUP USA OPEN Class champion Link to post Share on other sites
alias23 1,536 Posted July 8, 2017 Report Share Posted July 8, 2017 On 05/07/2017 at 17:59, NW76 said: --> at 2:00 min you can see what I mean ... at the limiter for 1.5 sec ... no chance to shift but still not at the breaking point ... Wish I hadn't seen that video need an AIM dash now ? 1 Quote www.alias23.com Link to post Share on other sites
NW76 499 Posted July 8, 2017 Author Report Share Posted July 8, 2017 17 minutes ago, alias23 said: Wish I hadn't seen that video need an AIM dash now ? @alias23 its really worth the money and makes trackday life so much easier. No more setup work. Its all in the car, recognizes the track automatically and starts the timer / video recording as you cross the line ... I always had issues or forgot to connect smthg with my Harrys Laptimer setup before ... And the best is you get a wealth of data that you can analyze with a professional tool ... Wouldnt want to miss it anymore and already have forgotten how much money I sunk into that ... 38 minutes ago, Jack said: FWIW: I can't comment on the V6 with any authority, but i do know that with the Toyota 2ZZ motor (S2 Elise/Exige/211) bouncing off the rev-limiter is not recommended. While the rev-limiter is designed to prevent a serious/catastrophic over-rev, the 2ZZ rockers have been known to fail/break with the cause attributed to excessive rev-limiter engagement. I can't say the same applies to the V6 Toyota rockers, but I try not to bounce off the limiter on a regular basis. Thanks @Jack ... I think I will try to short shift this particular one next time and check what it does to laptime. Its a much bigger issue in Spa ... and its most of the times 4th gear ... 5th is so long .... Quote Link to post Share on other sites
Jack 547 Posted July 9, 2017 Report Share Posted July 9, 2017 3 hours ago, NW76 said: @alias23 its really worth the money and makes trackday life so much easier. No more setup work. Its all in the car, recognizes the track automatically and starts the timer / video recording as you cross the line ... I always had issues or forgot to connect smthg with my Harrys Laptimer setup before ... And the best is you get a wealth of data that you can analyze with a professional tool ... Wouldnt want to miss it anymore and already have forgotten how much money I sunk into that ... AiM MXS FTW ..... it's great, love mine too....... screen shot from one of my videos. 1 Quote Jack2008 2-Eleven2015 Exige V6 CupR Track videos ... http://www.youtube.com/jackcup2010 Lotus Challenge Series ULTRA Class champion2012 Lotus CUP USA OPEN Class champion Link to post Share on other sites
NANO 128 Posted July 9, 2017 Report Share Posted July 9, 2017 Norbert, I do not remember anymore ... where did you get it and who made you fit and adjust AIM MXs ? Quote Link to post Share on other sites
Gold FFM C8RKH 6,791 Posted July 9, 2017 Gold FFM Report Share Posted July 9, 2017 15 hours ago, French Frie said: Nope... a AIM one ! The "GARW" dash has still to be released ... I'm beginning to believe the "GARW" dash will never be released as there is always just one more additional function that must be added before release, then, oh wait, I've changed and added this.... I think the "GARW" dash is bloody brilliant and just wish it would be released now. I'd take the current version in no time for my VX220. All the other stuff can be added either as an "upgrade" or future model versions. Quote Alcohol. Sex. Tobacco. Drugs. Chocolate. Meh! NOTHING in this world is as addictive as an Evora +0. It's not for babies! The first guy to ride a bull for fun, was a true hero. The second man to follow him was truly nuts! Link to post Share on other sites
NW76 499 Posted July 9, 2017 Author Report Share Posted July 9, 2017 11 hours ago, NANO said: Norbert, I do not remember anymore ... where did you get it and who made you fit and adjust AIM MXs ? Did mine before the season and worked with KomoTec to customize it. Amongst others have a break and a gearbox oil temp sensor. Both very helpful imho. Its more than the hardware, a proper installation and configuration will take some time if you DIY it ... 1 Quote Link to post Share on other sites
NANO 128 Posted July 10, 2017 Report Share Posted July 10, 2017 ... vielen Dank Norbert für deine Antwort ... Tschuss 1 Quote Link to post Share on other sites
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