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Chain & Sprockets for the 83 GS750ES - Gearing

salty_monk

salty_monk

Forum Guru
Past Site Supporter
TGSR Superstar
Kind of approaching the time when I'll need to be buying sprockets for this bike...

I have a 170 60 17 tyre going on it...

I believe I can get a 530 or a 520 set on it.

I would like to go with the 520 just to give me a little more room but I don't want to sacrifice clearance at the swingarm. A modern 520 should easily handle everything the 750 has to offer in terms of power.

I have ridden one of these bikes with stock gearing & a 120 17 Roadrider tyre on it & would say that the gearing is definitely not too far away from where it needs to be...

What are you guys running? What's the minimum dimension front sprocket for good swingarm clearance (I don't necessarily want to run the smallest I just don't want to go too small).

Cheers,

Dan
 
Warning! Profound Glimpse Into The Obvious!

Warning! Profound Glimpse Into The Obvious!

Hi Dan,

Just to give you a starting point, stock was 14/43 teeth on a 530 chain w/112 links. Tweak as necessary. :)

How's that brand new baby boy?


Thank you for your indulgence,

BassCliffr
 
I'm currently running 16/43 with a 114 link 530 chain. I tried a 17/43 great on the highway, but was otherwise way too tall. Am going to try 16/45 this fall. Congrats on the little one, my 22 mo. old grandson is on my lap watching me type this.
 
That's good info you two - thanks! Z1 should be able to convert from a 530 to a 520 for me from that.

I'm definitely going to need a slightly longer chain... I guess I'll have to work it out & go a bit longer then cut to fit.

Dee - did you ever try the stock gearing? Why did you want to go taller, was it due to the lower profile of the radial? What rpm do you turn now at around 70mph?

Hopefully Billy will be along to tell us what he runs too.

This bike will be stock except for the K&N's, DJ kit & a Bassani Pipe.

Cheers,

Dan :)
 
Stock was too high on the highway for me, had that wish I had anouther gear feeling. I'm having the wandering tach needle syndrome lately so I can't really say what it's at.... Wanted a little taller without going any smaller in back. The 16/43 with the 114 chain put the rear wheel back a littte more too which helps clearance. It's nice on the highway but it's almost too much in town so that's why I'm considering going 1 or 2 teeth bigger on the rear..... Any long trips in the future I'll put the 17 on it then. Really wish these bikes had an OD style sixth gear.
 
And yeah, it was due to the lower tire, all stock it was fine for me.
 
14/38 with a 70 profile tire, it has put the speedometer off a little, but the RpM are in a sweet place on the highway, Not much for low speed, I don't have the option of anything under 15km/hr as the engine doesn't turn enough to do that slow.
 
I did the 520 conversion and run a 16/42 combo. On my bike it still feels like I could use a 6th gear so I'm going to go up one tooth up front. The 16/42 puts the rpm at any given speed just about where it was with the stock wheel and gearing.
 
Thanks guys.

Billy - how many links is your chain? Is the 520 link the same length as the 530 link then? I assumed it would be a little shorter like going from a 630 to a 530.

I need to run my wheel quite far back in the swingarm so I'll need a decent length of chain I guess.

Dan :)
 
salty_monk said:
Thanks guys.

Billy - how many links is your chain? Is the 520 link the same length as the 530 link then? I assumed it would be a little shorter like going from a 630 to a 530.

I need to run my wheel quite far back in the swingarm so I'll need a decent length of chain I guess.

Dan :)
Click to expand...
I'd have to count, but it should be about the same as stock since I dropped a few teeth at the rear and went up a couple at the front. I'll try to remember to put it up on the wheel stand and count tomorrow.
 
Billy did you get a chance for a count up? Got Z1 researching the swap for me, should ship Tues but it would be nice to know they have enough chain.... I just bought a chain tool for breaking & riveting so shouldn't be a problem to go a little on the long side.

Dan :)
 
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