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Author Topic: Finding three tenths of a louzy second.  (Read 1489 times)

Offline Sonreir

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Re: Finding three tenths of a louzy second.
« Reply #30 on: Sep 14, 2017, 11:06:33 »
The dyno chart also doesn't state that the 2017 Street Glide is 830 pounds but the chart is still useful information in determining shift points, no? It may not show the whole picture, but the whole picture is just made up of discrete parts that fit together in a certain way.
« Last Edit: Sep 14, 2017, 11:11:02 by Sonreir™ »
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Offline Sonreir

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Re: Finding three tenths of a louzy second.
« Reply #31 on: Sep 14, 2017, 11:35:53 »
Anyway... I see your point. I was wrong about the horsepower thing.
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Offline Sonreir

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Re: Finding three tenths of a louzy second.
« Reply #32 on: Sep 14, 2017, 11:48:47 »
Here are some numbers based on a 2006 model. I imagine your numbers will vary since you're on an FI setup. You have a dyno of your current build?
Sparck Moto - http://www.sparckmoto.com

Audaces fortuna iuvat.

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Offline 1fasgsxr

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Re: Finding three tenths of a louzy second.
« Reply #33 on: Sep 14, 2017, 13:35:24 »
I still stand behind my statement that you are launching at too high of an rpm. If it was a bar bike then yeah. When I was going to the track on my Gsxr I was launching at around 5500 rpm and was pulling about the same 60ft times you guys are. Get a 2 step and set it for around 5000 rpms and watch the difference.
That bike should be able to hit high 8's launching it like you just pulled out from a stop light. If it runs slower shifting at redline then that would lead me to believe there is something wrong with the set up.  Just my .02

Offline Sav0r

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Re: Finding three tenths of a louzy second.
« Reply #34 on: Sep 14, 2017, 20:28:14 »
Get the stacks plateaued and do ceramic bearings throughout. Won't be cheap but that's a nice reduction of parasitic drag throughout.
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Offline Scooter trash

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Re: Finding three tenths of a louzy second.
« Reply #35 on: Sep 14, 2017, 22:11:13 »
I posted this on the first page. Between seat time and experimenting at different launch rpms.10,500 launch gets the turbo into work load then in second gear, shift at 8500, which is the torque peak.
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Offline farmer92

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Re: Finding three tenths of a louzy second.
« Reply #36 on: Sep 15, 2017, 08:13:00 »
I posted this on the first page. Between seat time and experimenting at different launch rpms.10,500 launch gets the turbo into work load then in second gear, shift at 8500, which is the torque peak.

Why shift at torque peak?
Wouldn't you want to shift at the point when the torque at the wheel is the same in both gears?



You can see here where the curves for the rear wheel torque intersect, those would be your shift points.

Offline Sonreir

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Re: Finding three tenths of a louzy second.
« Reply #37 on: Sep 15, 2017, 11:43:04 »
Why shift at torque peak?
Wouldn't you want to shift at the point when the torque at the wheel is the same in both gears?

That makes sense to me. I should revise my chart.
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Audaces fortuna iuvat.

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1976 Puch Maxi - APuchalypse Now
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Offline 1fasgsxr

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Re: Finding three tenths of a louzy second.
« Reply #38 on: Sep 15, 2017, 13:25:53 »
Does he hit the limiter before he can shift into 2nd gear?
How much seat time does your rider have?   I have seen guys running 5.60's (1/8th mile ) on extended swingarm bikes with a stock motor and maybe a 50 shot of spray. What brand is the turbo? What size are your injectors?
« Last Edit: Sep 15, 2017, 13:30:18 by 1fasgsxr »

Offline Scooter trash

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Re: Finding three tenths of a louzy second.
« Reply #39 on: Sep 15, 2017, 23:58:50 »
Does he hit the limiter before he can shift into 2nd gear?
How much seat time does your rider have?   I have seen guys running 5.60's (1/8th mile ) on extended swingarm bikes with a stock motor and maybe a 50 shot of spray. What brand is the turbo? What size are your injectors?
He hasn't hit the rev limiter lately, but he did report it seemed early. The turbo is a Turbonetic T3-T4 with a 55mm compressor scroll. The injectors are 620cc, fed with a 225 lph fuel pump at 45 psi.

Here's the kicker in the teether, the plugs came stock gapped at .055" out of the box for the Ford Connect van. I've been just putting them in because the general notion is that you don't have to gap Iridium plugs. The shop manual just says to replace them is dirty or discolored no gap recommendation until you dig into the electrical section and it wants .031-.035" gap. Turbos need to be gapped .001-.005" closer. This might explain the power drop off, I'll find out next race. BLAAAH! Darwin award time. Bought a new set and they were .036", so back to the drawing board.
« Last Edit: Sep 16, 2017, 20:46:23 by Scooter trash »
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