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Old 06-22-2012, 08:07 PM   #1
TwistedMister
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srad 600 sprocket selection?

AFAM, Driven, or Renthal rear Alloys, select one...

RK or EK, select one...

gear ratio experiences, best combo, stock is 16/46, a semi tired engine maybe lookin to give it a break,15/47? 14-15/45? just dunno how dramatic one tooth down in the front is going to be? I want the tire as forward in the swing-arm as I can get it to start

best ratio for easy starts but still save whatever top end there is?

my experience is with Vortex alloys and AFAMs, the old Vortex sprockets were junk, they did strengthen them as of late but I still think the AFAM is stronger, never used a Renthal or Driven with the exception of a Renthal on my marchesini/busa never a problem but only did about 4k miles, all steel 530 setup, need some SRAD input for normal to elevated street riding.. thanks
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Old 06-22-2012, 09:19 PM   #2
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Re: srad 600 sprocket selection?

How about a nice RK warranty kit with all steel sprockets?
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Old 06-22-2012, 11:01 PM   #3
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Re: srad 600 sprocket selection?

15/46 with EK MVXZ Gold chain in 520 pitch, steel front, Driven Alum rear

Chain slack set on the looser side.

It gives the 600 a little more pep down low, but sits higher in the rev's when cruising on the interstate.
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Old 06-23-2012, 03:44 AM   #4
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Re: srad 600 sprocket selection?

Im swaping my 600 to 750, I have stock set up 16/46. From what I believe its 16/44 on the stock 750? So off the bat Im at +2 out the back, while at it should i replace the front sprocket with a 15 to have -1/+2. I have about 500-600 miles on my current chain and sprockets and they are still in great condition. Also someone mentioned that having two even # sprockets that the chain hits the same spots and can cause uneven wear, is this true? If so it will make more sense for me to get a 15 for the front then.
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Old 06-24-2012, 04:55 AM   #5
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Re: srad 600 sprocket selection?

I went from a 16 tooth front to a 15 tooth with a stock rear and it made a small difference. It was worth doing. Bike sits at 6,000RPM at 100kmh (GPS) in 6th gear.
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Old 06-24-2012, 10:48 AM   #6
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Re: srad 600 sprocket selection?

think I'll go 15/44

15/46 = +6.3% torque and -6.3% speed

15/45 = +4.1% torque and -4.1% speed 106 links vs 109,

should bump the stops all the way forward for a minute and drop the needle somewhere around 5.5 @ 100kph/62mph

that way my speedo's off only round 10% plus I'm a lil' stingier when it comes time to buy gas

http://www.sprocketcalculator.com/

did you install a speedo healer or something to correct the speedo?
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Old 06-24-2012, 01:44 PM   #7
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Re: srad 600 sprocket selection?

I went from standard to a -1+2 on the 600......then changed engines to a 750....what gearing does that equate to on a 750? sorry for stupid question.

Fwiw i have a speedo healer fitted.
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Old 06-25-2012, 01:20 AM   #8
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Re: srad 600 sprocket selection?

i believe thats -1 +4 lol
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Old 06-25-2012, 02:31 AM   #9
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Re: srad 600 sprocket selection?

Quote:
Originally Posted by Armi View Post
I went from standard to a -1+2 on the 600......then changed engines to a 750....what gearing does that equate to on a 750? sorry for stupid question.

Fwiw i have a speedo healer fitted.

are you saying when you swapped to the 750 you used the same 15/48 sprocket setup you had on the 600?

or are you saying you now have the stock 750 final drive ratio?

600 16/46
750 16//44

I have heard the transmission ratios for the 750 are different, a 2001 600 has a taller ratio than a 98 750, it appears the 01 600 compensates the internal ratio in the final drive, a taller output with a lower final drive

someone correct me if I'm wrong as I dunno what the correct transmission ratios for a 96-00 600 is..

if you went from a stock 750 16/44 setup and went to a 15/48 you have increased torque by 14.1% and decreased speed by 14.1%

if you used the stock final drive ratios on the 750 I don't think you are very far off the stock 600 final drive as the use of a smaller rear sprocket is compensated by a shorter primary output, however I would assume the 750 does have a slight higher overall final drive gear ratio in terms of wheel revolution simply by considering the 750 has a slightly higher top end speed and red line of 1000rpms less

this is all speculation I don't really know the reality as I don't have a 750, the 750 may have a higher top end speed because it will actually reach red line i 6th gear as my 600 will not, therefore actual speed is like 145 TOPS on my 600
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Old 06-25-2012, 02:40 AM   #10
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Re: srad 600 sprocket selection?

while were on it I have been considering on my engine build if I can squeek 25 more HP from the build I really would like to alter the transmission ratios

if the 750 has a shorter gearbox and the gears will swap it makes sense to me if I wanted a taller 5th and 6th gear i would use the first 4 gears from the 750 then the 5th and 6th off the 600..

I know what your thinking, that would just give me 4 shorter gears in the beginning and a stock 5th and 6th.. it would

but if I manipulate the final drive ratios to get 1st through 4th the same as a stock 600 (prolly up 1 in front or down 2) that would make 5th and 6th taller than stock and 1 thru 4 about the same as stock

it could also be done on the 750, swap out 5th and 6th from a 600 for an overdrive 5th and 6th, or even just 6th

anyone use this setup?
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