-1 on the front

garysol1 · #1 (**permalink**) 05-12-2006, 04:21 AM

I dropped down from the stock 17 to a 16 counter shaft sprocket today and it made a world of differance. The bike is much snapier through the first few gears and is actualy smoother at 70mph. Only downside I see is that the speedo is even farther off then it was. I guess I will need a speedo healer to fix that.

BALLZ · #2 (**permalink**) 05-12-2006, 11:55 AM

-1 on the front is a major improvement over stock but the downside is excess chain wear but I never care about that since I don't ride the street that often on mine so mileage is a non issue. Will it wheelie

garysol1 · #3 (**permalink**) 05-12-2006, 01:35 PM

Quote:

Originally Posted by BALLZ

-1 on the front is a major improvement over stock but the downside is excess chain wear but I never care about that since I don't ride the street that often on mine so mileage is a non issue. Will it wheelie

Ballz, Not disagreeing but not sure I agree on the excess chain wear. The 16 is standard on many sport bikes and they seem to wear just fine. I guess the wear will accelerate a bit but not enough to worry about. Wheelies, How would I know. To admit to wheelies would be to admit to squidlyness in the eyes of many on this forum. It's COOL when Hodgeson does a stand up wheelie for a 1/2 mile on the cooldown lap but when someone here says "I did a wheelie".....well you know...LoL

BALLZ · #4 (**permalink**) 05-12-2006, 01:42 PM

Yes a 16T is standard on many bikes but having said that anytime you revert to a smaller dia. front it will increase chain wear especially on a bike that has a hit like the 750. I've already noticed significant wear on my OEM chain in only 3 trackdays since going to -1 on the front. It will also wear the swingarm slider more if you run your chain on the tight side which you should not be doing anyway. Loose is best on this bike and by loose I mean take a finger to the bottom of the chain at the location where the slider ends on the bottom of swingarm push up towards bottom of swingarm if your just touching the slider your good. Chains last longer with larger dia. front sprockets not myth in that. I alos had the pleasure of wearing out many 520 setups on 600's running 15T fronts, 16T was stock which lasted way longer on the 600. I will be doing a 520 conversion on the 750 soon, DIDVM xring with Vortex sprockets most likely a 16T front with 44T rear since Barber and Talladega are short straight tracks.

Changing gears a bit literally I swapped the stock 15T front on my Wee Strom 650 to a 16T for more relaxed feel at highway speeds, it knocked the acceleration off a bit but the fewer RPM's down the highway were worth it. I expect the OEM DID chain to go 15k miles or more with the larger dia. sprocket up front. So far it has not needed any adjustments in 5300 miles.

As for wheeling I'm not the best but I do like the power wheelies off the turns and the 750 is very good at that -1 on the front. Nice 2 footer floating out on power while banging a shift with a bit of crossed up bars, good stuff.

BTW disagreeing is healthy

garysol1 · #5 (**permalink**) 05-12-2006, 02:03 PM

Quote:

Originally Posted by BALLZ

As for wheeling I'm not the best but I do like the power wheelies off the turns and the 750 is very good at that -1 on the front. Nice 2 footer floating out on power while banging a shift with a bit of crossed up bars, good stuff.

BTW disagreeing is healthy

Agreed

BTW...You mentioned on another thread that you were doing the June 24th Track Day at Barber. I plan on being there as well. Should be a fun weekend.

BALLZ · #6 (**permalink**) 05-12-2006, 02:32 PM

As of right now I have not signed up, still debating going back racing over just doing trackdays. I'll make my mind up this weekend but I am leaning toward doing just trackdays about 60% so there is a good chance i'll see you there.

BALLZ · #7 (**permalink**) 05-12-2006, 04:37 PM

Quote:

Originally Posted by garysol1

Agreed

BTW...You mentioned on another thread that you were doing the June 24th Track Day at Barber. I plan on being there as well. Should be a fun weekend.

I just renewed my license with NESBA this morning and I signed up for Saturday June 24th so I will definetly be there.

nero · #8 (**permalink**) 05-12-2006, 08:33 PM

if going down on the front sprocket 1 tooth is harder on the chain (tighter radius) and affects the speedometer accuracy then will going up 1-2 teeth on the rear sprocket screw up the speedo too ?

what drives the gsxr speedos ?

BALLZ · #9 (**permalink**) 05-12-2006, 08:45 PM

Quote:

Originally Posted by nero

if going down on the front sprocket 1 tooth is harder on the chain (tighter radius) and affects the speedometer accuracy then will going up 1-2 teeth on the rear sprocket screw up the speedo too ?

what drives the gsxr speedos ?

Yes changing the front will screw up the speedo even more on the GSXR about 10 mph high according to my GPS. Going up on the rear has NO effect on speedo but the OEM speedo is about 5~6 mph high stock. The GSXR reads from a magnetic pickup off the front sprocket cover. My V-Strom 650 however reads from a pickup on the front wheel so it was not affected by a front sprocket change but there again it was wrong stock to begin with. There are electronic devises to correct the speedo but who cares about the small details, I know I don't.

Its not like I'm about to cross the country on the thing.

garysol1 · #10 (**permalink**) 05-12-2006, 10:03 PM

Quote:

Originally Posted by BALLZ

Going up on the rear has NO effect on speedo

Uh Oh ....here we go disagreeing again...LoL
I think the speedo would have to be off no matter where you change the gearing. The result is the same. The engine and counter shaft will spin faster at any given speed. Since the speedo pick up is on the counter shaft....wouldn't it read faster?

BALLZ · #11 (**permalink**) 05-12-2006, 11:22 PM

Quote:

Originally Posted by garysol1

Uh Oh ....here we go disagreeing again...LoL
I think the speedo would have to be off no matter where you change the gearing. The result is the same. The engine and counter shaft will spin faster at any given speed. Since the speedo pick up is on the counter shaft....wouldn't it read faster?

Nope it has no effect on the speedo by changing the rear only thing you'll notice then is more rpm's on the tach. Trust me I've been down this path before many times on many different Suzuki's with the same setup. OEM front sprocket will still be turning the same revolutions in relation to the calibration of the pickup unit, make sense

garysol1 · #12 (**permalink**) 05-12-2006, 11:25 PM

Quote:

Originally Posted by BALLZ

OEM front sprocket will still be turning the same revolutions in relation to the calibration of the pickup unit, make sense

Give me a minute...Trying to work it out in my head..LoL

garysol1 · #13 (**permalink**) 05-12-2006, 11:40 PM

Quote:

Originally Posted by garysol1

Give me a minute...Trying to work it out in my head..LoL

Ok, yep...makes sense. I was reverse thinking it....Damn it!!!

garysol1 · #14 (**permalink**) 05-12-2006, 11:55 PM

Quote:

Originally Posted by garysol1

Ok, yep...makes sense. I was reverse thinking it....Damn it!!!

Nope, changed my mind. I don't understand this. The stock countershaft sprocket has to turn faster to make the rear wheel go the same speed. The pick up would have to see the front spinning faster to turn the larger rear???????????

no???

BALLZ · #15 (**permalink**) 05-17-2006, 01:02 AM

Rear wheel going faster has nothing to do with speedo calibration which is governed by the OEM sprocket size in relation to the magnetic pick up sensor. You will turn more RPMs to achieve the same speed.

OT: Sorry about the delay in response my home PC imploded saturday morning and I am using my mothers PC since I am in the field now at work and do not have acces to my work PC sine I rarely go to the office now. New DELL is on the way hopefully I'll have it by this weekend, computer death is so painfull