Is there a way to work out the prospective top speed after increasing/decreasing sprocket sizes? - SV650.org

04-04-08, 02:22 AM

I'm just curious other than anything else.

Sid Squid · 04-04-08, 06:54 AM

Yes. Why do you want to change?

04-04-08, 07:10 AM

I thought it was ride it...

04-04-08, 07:13 AM

Or try this - Gearing Commander

04-04-08, 11:19 AM

I wrote a little widget specifically for the SV ... I could upload the software or if you are interested in certain sprocket combo, let me know what they are and I'll just post the output ...

You will need to measure the circumferance of your rear tyre (in CM)

yorkie_chris · 04-04-08, 05:50 PM

Remember any calculators are theoretical, SV's won't rev out in top on stock gearing.

04-04-08, 05:58 PM

Quote:

Originally Posted by Sid Squid

Yes. Why do you want to change?

I don't at the moment I'm just curious really in case I do one day. I suppose Silverstone got me thinking that I have a top speed 25 or 30 miles an hour above the top speed I acheived and also it'd make the nasty little chicanes easier to manage and the silly hairpin at Mallory.

P.S. Blue I haven't got an SV.

04-04-08, 06:02 PM

Quote:

Originally Posted by yorkie_chris

Remember any calculators are theoretical, SV's won't rev out in top on stock gearing.

I've read this before but I swear mine hit the rev limiter and bounced off it before reaching it again very slowly a couple of times til I backed off.

04-04-08, 06:47 PM

Quote:

Originally Posted by teriyakimonkey

P.S. Blue I haven't got an SV.

What bike is it? can you look up the secondary reductions/ratios?

I can plug those in my widget and make it custom to your bike

04-04-08, 06:52 PM

For the SV650 the numbers are thus

SV650 Possible configuration 1

General info:-
Wheel circumference = 196cm
Front Sprocket = 15 teeth
Rear Sprocket = 44 teeth
RPM selected at save time = 10500

Speeds with above configuration:-
Speed in gear1 = 50.88 MPH @ 10500rpm
Speed in gear2 = 70.46 MPH @ 10500rpm
Speed in gear3 = 90.71 MPH @ 10500rpm
Speed in gear4 = 111.35 MPH @ 10500rpm
Speed in gear5 = 130.22 MPH @ 10500rpm
Speed in gear6 = 147.03 MPH @ 10500rpm

SV650 Possible configuration 2

General info:-
Wheel circumference = 196cm
Front Sprocket = 14 teeth
Rear Sprocket = 45 teeth
RPM selected at save time = 10500

Speeds with above configuration:-
Speed in gear1 = 46.43 MPH @ 10500rpm
Speed in gear2 = 64.30 MPH @ 10500rpm
Speed in gear3 = 82.78 MPH @ 10500rpm
Speed in gear4 = 101.62 MPH @ 10500rpm
Speed in gear5 = 118.84 MPH @ 10500rpm
Speed in gear6 = 134.18 MPH @ 10500rpm

04-04-08, 02:22 AM	#1
monkey Guest Posts: n/a	Is there a way to work out the prospective top speed after increasing/decreasing sprocket sizes? I'm just curious other than anything else.

04-04-08, 06:54 AM	#2
Sid Squid No, I don't lend tools. Mega Poster Join Date: Jul 2003 Location: Skunk Works, Nth London Posts: 8,680	Re: Is there a way to work out the prospective top speed after increasing/decreasing sprocket sizes? Yes. Why do you want to change? __________________ If an SV650 has a flat tyre in the forest and no-one is there to blow it up, how long will it be 'til someone posts that the reg/rec is duff and the world will end unless a CBR unit is fitted? A little bit of knowledge = a dangerous thing. "a deathless anthem of nuclear-strength romantic angst"

04-04-08, 07:10 AM	#3
Grinch Guest Posts: n/a	Re: Is there a way to work out the prospective top speed after increasing/decreasing sprocket sizes? I thought it was ride it...

04-04-08, 07:13 AM	#4
Grinch Guest Posts: n/a	Re: Is there a way to work out the prospective top speed after increasing/decreasing sprocket sizes? Or try this - Gearing Commander

04-04-08, 11:19 AM	#5
Blue_SV650S Guest Posts: n/a	Re: Is there a way to work out the prospective top speed after increasing/decreasing sprocket sizes? I wrote a little widget specifically for the SV ... I could upload the software or if you are interested in certain sprocket combo, let me know what they are and I'll just post the output ... You will need to measure the circumferance of your rear tyre (in CM)

04-04-08, 05:50 PM	#6
yorkie_chris Noisy Git Mega Poster Join Date: Apr 2007 Location: Halifax/Leeds Posts: 26,645	Re: Is there a way to work out the prospective top speed after increasing/decreasing sprocket sizes? Remember any calculators are theoretical, SV's won't rev out in top on stock gearing. __________________ Currently Ex Biker Now rebuilding a 63' fishing trawler as a dive boat

04-04-08, 06:52 PM	#10
Blue_SV650S Guest Posts: n/a	Re: Is there a way to work out the prospective top speed after increasing/decreasing sprocket sizes? For the SV650 the numbers are thus SV650 Possible configuration 1 General info:- Wheel circumference = 196cm Front Sprocket = 15 teeth Rear Sprocket = 44 teeth RPM selected at save time = 10500 Speeds with above configuration:- Speed in gear1 = 50.88 MPH @ 10500rpm Speed in gear2 = 70.46 MPH @ 10500rpm Speed in gear3 = 90.71 MPH @ 10500rpm Speed in gear4 = 111.35 MPH @ 10500rpm Speed in gear5 = 130.22 MPH @ 10500rpm Speed in gear6 = 147.03 MPH @ 10500rpm SV650 Possible configuration 2 General info:- Wheel circumference = 196cm Front Sprocket = 14 teeth Rear Sprocket = 45 teeth RPM selected at save time = 10500 Speeds with above configuration:- Speed in gear1 = 46.43 MPH @ 10500rpm Speed in gear2 = 64.30 MPH @ 10500rpm Speed in gear3 = 82.78 MPH @ 10500rpm Speed in gear4 = 101.62 MPH @ 10500rpm Speed in gear5 = 118.84 MPH @ 10500rpm Speed in gear6 = 134.18 MPH @ 10500rpm

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