Higher gearing for the SV

[ShadFX]

Hi all

I do mostly dual carriageway / motorway miles on my way in to work (15 / 16 miles out of the 20) and was looking at gearing the SV up slightly (just so I can sit at about 5K RMP at 75 mph) - but im worried if I pop the front sprocket up a tooth and the rear sprocket down a tooth (equivelent to downing 4 teeth at the rear if i read the other posts right..) that it will ruin the way the bike handles.....

Any ideas or has anyone actually done this?

Thanks

[yorkie_chris]

I've had a brief go on Dizzyblondes bike, that's got a tooth up on the front. It's alright just not going to set your head on fire coming out of slow corners.

[ShadFX]

Chris - do you know what kinda RPM the bike sits at at around 70 MPH?

[yorkie_chris]

Dunno, have a look on gearing commander and play around.

I went opposite way on mine, added 3 teeth to rear, sat at 9k rpm on motorway. It would still do 135 indicated and was loads better than stock around twisties.


Gearing commander reckons you're doing 4999rpm at 70 with stock S gearing, with 16/43 you'd be doing 4580 rpm.

[dizzyblonde]

if its faired go for one tooth up on front and the standard on the rear.

I shall just look at my specifics...won't be a mo.


ok 44 rear. 16 front.

order a 1998-1999 front sprocket for a GSX-R 750...info from previous owner.


at 90 mph you get approx 6k revs. HTH

Any more info, I'd be happy to oblige, after all most go the opposite way and just assume how things behave.

[Stu]

I've got 16/44.
It's fine for what you want

[ShadFX]

Thanks for all the info guys :) They dont actually need doing yet and its more of an annoyance than anything.. Will jot down the info and make sure I tuck it away for when I need it :) Thanks!

[yorkie_chris]

order a 1998-1999 front sprocket for a GSX-R 750...info from previous owner.

B and C express do sprockets if you ask for "an SV650 one, but with x amount of teeth".

[embee]

I have 16/44 (+1 g/box and std rear) on my curvey S. Standard length chain still fits.

It suits my riding style, prefer the more relaxed feel, and I don't keep looking for 7th gear. Don't expect any significant difference in economy.

[dizzyblonde]

B and C express do sprockets if you ask for "an SV650 one, but with x amount of teeth".

Just going on whats on my bike, but its so good on chains and sprockets I can hardly say I'll be needing to know where to get em....for agggggeeeees. Still wondering when I'll be adjusting the chain for the third time in three years :-)

I notice fuel efficiency more on serious long distance riding up and down the motorway. As I have two bikes to compare, I notice a couple of quid or three difference. Although I suppose it also goes on a persons riding style too.

[yorkie_chris]

Plus the yellow one has a different air filter and bigger main jets, so it's not a fair comparison.

[embee]

Well there should probably be some economy benefit, all other things being equal, but even 5% (which would be a lot for this type of mod) would only be a couple of mpg so can easily be swamped by other things like spirited riding.

On "A" road riding I'm probably using a lower gear some of the time because of the longer legs, maybe drop to 4th when 5th would have done on std gearing, so it tends to cancel out. Long trips like holidays are definitely nicer on the taller gearing.

[Teabag]

Annoyingly from 2007 onwards the S has the same gearing as the N - 15/45. This makes the bike a bit buzzy on m-ways. Tried last weekend to change the front to 16 but couldn't get the damn sprocket nut undone even with a 2 foot wrench. Need to go and find someone with an air impact wrench thingy.

[hardhat_harry]

14/46 for me but I want acceleration :)

[yorkie_chris]

Long trips like holidays are definitely nicer on the taller gearing.

You need to holiday to somewhere with twisties :P

[dizzyblonde]

Hey, some of us like to go beyond the walls of this turf ;-) Getting twisties with better road surfaces, you have to go beyond it :-)

...and higher gearing will get you there much more comfortably.

[hardhat_harry]

Aldi sell electric and air rattle guns cheap

Annoyingly from 2007 onwards the S has the same gearing as the N - 15/45. This makes the bike a bit buzzy on m-ways. Tried last weekend to change the front to 16 but couldn't get the damn sprocket nut undone even with a 2 foot wrench. Need to go and find someone with an air impact wrench thingy.

[embee]

You need to holiday to somewhere with twisties :P

What like this? :D


http://i258.photobucket.com/albums/hh268/Hi-vis/IMG_4138rotSmall.jpg

[Spikenipple]

Annoyingly from 2007 onwards the S has the same gearing as the N - 15/45. This makes the bike a bit buzzy on m-ways. Tried last weekend to change the front to 16 but couldn't get the damn sprocket nut undone even with a 2 foot wrench. Need to go and find someone with an air impact wrench thingy.

Yeah I did wonder why my SV is so buzzy. Reading that the earlier bikes had a 16 tooth front means it makes sense now :P
Makes this later models a bit more lively though; I've seen 145 on the clocks recently.

[Davies 52]

Hi guys,
Anyone got a link for this gearing commander blokey/comp site.
Cheers
Lee D

[Stu]

Yeah I did wonder why my SV is so buzzy. Reading that the earlier bikes had a 16 tooth front means it makes sense now :P
Makes this later models a bit more lively though; I've seen 145 on the clocks recently.
No it wasn't that different!
Std used to be 15/44 and you're saying it's now 15/45.

[yorkie_chris]

Hi guys,
Anyone got a link for this gearing commander blokey/comp site.
Cheers
Lee D

http://lmgtfy.com/?q=gearing+commander

[Spikenipple]

No it wasn't that different!
Std used to be 15/44 and you're saying it's now 15/45.

Sorry, I didn't read the thread properly last night. That's Jagermeister for you ^_^
5000RPM in 6th gear on my bike is about 65mph, that's with 15/45 (standard) gearing.

[SVGrandad]

Sorry, I didn't read the thread properly last night. That's Jagermeister for you ^_^
5000RPM in 6th gear on my bike is about 65mph, that's with 15/45 (standard) gearing.

4000 rpm is 65mph on mine :rolleyes: - nice and relaxed

[yorkie_chris]

But doesn't that mean you're right down out of the power in 1st for slow corners?

I don't have the attention left over to slip the clutch and the only time I tried it I nearly highsided from doing it wrong...

[dizzyblonde]

Higher gearing makes for the brain to be kept working when riding around in twisties for sure.On occasions its been a pain int ass compared to standard. Once you get used to how it works, I suppose its no different to how the gearing works on a larger Vtwin, but obviously not in power.
I can keep up with the big boys on long straight roads....ie Duc S4R does the same as mine in the example below.

As stated before. My 2000 SVs curvy has 16t front and standard rear. At 6000revs thats around 90mph. I say this as its something I pay attention to on long distance running. @30mph its around 4.5kish.
But remember thats curvy talk not pointy. No idea how they fare.

[yorkie_chris]

AFAIK pointy has same gearbox* so final drive would have the same effects.


*N.B ratios, there are some changes WRT what fits into what engine

[dizzyblonde]

oh yeah should have said, the figures I posted....top gear and second.

[SVGrandad]

But doesn't that mean you're right down out of the power in 1st for slow corners?

I don't have the attention left over to slip the clutch and the only time I tried it I nearly highsided from doing it wrong...

If that was a reply to me, Yorkie Chris, I have too much power in 1st gear on slow corners, I prefer 2nd. But then, it is a thou.............. sorry!