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Author Topic: what gear do they normally use for rolling road runs  (Read 3000 times)

Offline Janner_Sy

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what gear do they normally use for rolling road runs
« on: September 14, 2009, 01:54:49 pm »
just had my car put on the rolling road and they did the runs in 5th gear, but for some reason i recall JKM and other previous dynos having done the runs in 4th gear.

does it make a difference at all which gear it is ran in??
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Offline Poppa Dom

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Re: what gear do they normally use for rolling road runs
« Reply #1 on: September 14, 2009, 01:58:14 pm »
Interesting, where was that? If you have not read it, this is a really interesting read from Keith at JKM. http://www.jkm.org.uk/performance/dynotesting.htm
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Phil Mcavity

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Re: what gear do they normally use for rolling road runs
« Reply #2 on: September 14, 2009, 02:08:18 pm »
I was under the impression it was 3rd gear?
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Offline Janner_Sy

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Re: what gear do they normally use for rolling road runs
« Reply #3 on: September 14, 2009, 02:10:44 pm »
Quote from: DomT on September 14, 2009, 01:58:14 pm
Interesting, where was that? If you have not read it, this is a really interesting read from Keith at JKM. http://www.jkm.org.uk/performance/dynotesting.htm

AMDessex. Was mega impressed there though.
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Offline Hedge

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Re: what gear do they normally use for rolling road runs
« Reply #4 on: September 14, 2009, 02:55:47 pm »
Normally 3rd or 4th. I thought the idea was that it was 1:1 gearing. :confused:
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Offline gazbutS3

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Re: what gear do they normally use for rolling road runs
« Reply #5 on: September 14, 2009, 03:04:42 pm »
Thats what I thought Hedge, thats why they run in 4th normally, closest to 1:1 :smiley:
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Offline Keith@APR

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Re: what gear do they normally use for rolling road runs
« Reply #6 on: September 29, 2009, 05:19:04 pm »
Quote from: gazbutS3 on September 14, 2009, 03:04:42 pm
Thats what I thought Hedge, thats why they run in 4th normally, closest to 1:1 :smiley:

 :congrats:
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Offline cuprak1

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Re: what gear do they normally use for rolling road runs
« Reply #7 on: September 29, 2009, 05:24:44 pm »
Mines always done in 5th :)
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Offline chungster

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Re: what gear do they normally use for rolling road runs
« Reply #8 on: September 29, 2009, 05:55:12 pm »
well the O2Q 6 speed gearbox comes with the ratios 1.09:1 in 4th gear, and 1.11:1 in 5th, with 6th being 0.91:1

so in that sense....4th would be better than 5th!
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Offline KRL

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Re: what gear do they normally use for rolling road runs
« Reply #9 on: September 29, 2009, 06:08:31 pm »
I guess the higher the gear the longer the pull which means you will get more data from it.
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