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Author Topic: GT650R Quarter Mile Time 13.02  (Read 3672 times)

james_73

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Re: GT650R Quarter Mile Time 13.02
« Reply #10 on: May 31, 2013, 01:58:01 AM »

i think i am pushing it, with the bike the way it is, if i was to chuck a turbo on my Lams bike i think the popo might see asmall turbo sticking out...:-)
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mrenforcer

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Re: GT650R Quarter Mile Time 13.02
« Reply #11 on: May 31, 2013, 02:18:25 AM »

i tried a tooth down on the front and yes i get into 6th gear @10200rpm but only 114mph at best, bike felt like it was reving and going no where
went back to std gearing and hold it in 5th and 120mph is best to date
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umop-ǝpisdn

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Re: GT650R Quarter Mile Time 13.02
« Reply #12 on: May 31, 2013, 02:47:32 AM »

Wouldn't it make sense that the higher the mph the lower the gearing as lower gearing <snip>

With gearing that's too short, you end up bouncing off the rev limiter in 6th, while going too tall means that you never reach the max power range in top gear, as you don't have enough torque to get you there..

The 'ideal' is to reach the end of your peak torque range in "the appropriate gear" as you cross the line, but this is affected by how good you are at shifting. i.e. your torque curve drops as you approach redline (but not massively), so you only wanna go for 4th/5th/6th if you are 100% sure you shift fast enough for the benefit of re-entering peak torque to give more benefit than the loss of power/time created by disengaging the clutch in order to shift.

The equation is not as simple as "chuck a 4.11 in her bro, everyone else does.."

DBM
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Snowfox

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Re: GT650R Quarter Mile Time 13.02
« Reply #13 on: May 31, 2013, 02:52:45 AM »

Should see what my frankenstein does lol.
TBR can.
AM airfilter.
Derestricted (ssh).
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umop-ǝpisdn

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Re: GT650R Quarter Mile Time 13.02
« Reply #14 on: May 31, 2013, 03:45:31 AM »

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james_73

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Re: GT650R Quarter Mile Time 13.02
« Reply #15 on: May 31, 2013, 03:54:37 AM »

your secret is safe with us snowfox
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Snowfox

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Re: GT650R Quarter Mile Time 13.02
« Reply #16 on: May 31, 2013, 05:24:59 AM »

Front end is ultra twitchy now that I dont have 4kgs of metal and plastic holding it down, gotta soften the forks :(
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Siwagod

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Re: GT650R Quarter Mile Time 13.02
« Reply #17 on: August 12, 2013, 06:38:06 AM »

Yeah I ran mine a few weeks ago down at EC. Did a 12.9 at 102mph. I'm 92kg without my suit, so having a smaller rider would most definitely get it up there.

Standard gearing. My mate who is about 70kg took it down the strip, but he dropped the clutch and nearly flipped it at the start, but still managed to go through the trap at 107mph and 13 flat, even with a screwed launch.

You can knock off about .5 of a second if you learn to clutchless shift.
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mrenforcer

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Re: GT650R Quarter Mile Time 13.02
« Reply #18 on: August 20, 2013, 09:52:35 PM »

sydney dragway is holding a bike night on 10th of oct
its bikes only event
set out like a wed night street meet but just for bikes
they will be on every 2nd thursday of the month across summer
koirider members should do a meet up out there
ill be there for sure
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Trintion

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GT650R Quarter Mile Time 13 02
« Reply #19 on: June 14, 2015, 02:10:01 PM »

I ran my standard S15 on the quarter mile and did a 14.7 at 90mph

Now i have FMIC, 3" inch turbo back Exhaust, 3" dump and front pipe and boost controller running 15psi

I expect to run mid 13s with street tyres if i launch right

is this realistic?

Thanx
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