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GS750E Gear Ratio Question

  • Thread starter Thread starter smokydog
  • Start date Start date
S

smokydog

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Hi all :)

Thinking of raising the gear ratio on my 1980 GS750E. Has anyone done this, I am thinking of dropping 2 teeth in the back or adding one in the front, going to buy new chain and sprockets anyway so now is the time to do it.

If you have raised your gear ratio on a GS750E please give me input, I want to raise it as much as I can without making 1st too high.

Thanks, Jerry
 
I did the 530 conversion on my 1979 GS750E. Went up 2 teeth in front and down 2 in the back. It is a little slower off the line but I found nothing but good things with the conversion. First gear was too low anyhow. A great swap if your not going hill climbing. Much more streetable and not nearly as buzzy on the highway. Mileage even went up slightly.
 
Haven't had a chain for over 30 years, but will just let you know that one tooth different on the front is about the same as two on the back.

In other words, adding one to the front will be about the same ratio as dropping three from the back.

.
 
I just converted my 82 750EZ to 530 chain and used 18 tooth front and 40 tooth rear sprockets. I should have done this years ago - I am very happy! 3800 rpm in 5th gear at 55 mph and now getting 53.8 mpg (accelerating briskly through the gears.)

I highly recommend Z1 Enterprises!! A quick phone call and they got me exactly what I wanted - lower rpm's throughout the gears and more mpg! X-ring chain fit perfectly.
 
smokydog said:
Hi all :)

Thinking of raising the gear ratio on my 1980 GS750E. Has anyone done this, I am thinking of dropping 2 teeth in the back or adding one in the front, going to buy new chain and sprockets anyway so now is the time to do it.

If you have raised your gear ratio on a GS750E please give me input, I want to raise it as much as I can without making 1st too high.

Thanks, Jerry
Click to expand...

Go here:
http://www.thegsresources.com/gs_garage.htm

scroll down to the "downlaods" and you will find the gearing caculator. You might have to alter the variables in the program to your bikes trans ratios, but the gearing calculator is a neat tool to give you an idea of how gearing changes will perform overall.
 
just asking

just asking

Hi all :)

I wanted to let you all know, I am not a newb to gear ratios, I raced motocross, hare scrambles, and enduros for 20 years. I know all about gear ratios and the effect of adding or removing teeth to the ratio. I just wanted input on this particular bike:) I was just wanting input on how high a ratio I could go on this bike without making first too high. I dont have the money to experiment with buying sprockets and I value everyone's opinion here and thought there would be a popular consensus on the best ratio for someone who mostly rides at highway speeds. My bike turns 5k RPM at 70mph and I really am not comfortable with that. In my opinion the bikes needs a sixth gear or a higher fifth gear. Plus I would get way better gas mileage on the highway with higher gears.

Thanks for all the input, and thanks for the link to the gear calculator, I appreciate everyones help, Jerry
 
Have you tried a 16T front sprocket yet?
If your chain is long enough, perhaps a 17T.

Daniel
 
thanks

thanks

Thanks Daniel,

I am changing the chain and both sprockets so I can pretty much get whatever I want in terms of sprocket. Thanks for the sidecovers too, your awesome:) Got em all fixed up and painted today, they look great:p

thanks again for all the input peeps, Jerry
 
smokydog said:
Hi all :)

I wanted to let you all know, I am not a newb to gear ratios, I raced motocross, hare scrambles, and enduros for 20 years. I know all about gear ratios and the effect of adding or removing teeth to the ratio. I just wanted input on this particular bike:) I was just wanting input on how high a ratio I could go on this bike without making first too high. I dont have the money to experiment with buying sprockets and I value everyone's opinion here and thought there would be a popular consensus on the best ratio for someone who mostly rides at highway speeds. My bike turns 5k RPM at 70mph and I really am not comfortable with that. In my opinion the bikes needs a sixth gear or a higher fifth gear. Plus I would get way better gas mileage on the highway with higher gears.

Thanks for all the input, and thanks for the link to the gear calculator, I appreciate everyones help, Jerry
Click to expand...

I fiddled with my 1100's gearing a bit as well. I made the same "6th gear" comment 6 years ago after spending a week at highway speeds with my 1100.

http://www.thegsresources.com/_forum/showthread.php?t=91976&highlight=gearing
 
Last edited:
I have the same bike in my garage. It likes to rev (isn't it smoooooth for a GS?). 6k is where the power starts to happen so she's being left with the same gearing as she came out of the factory. Suzuki got this one right I reckon.
 
The factory final drive ratio is 2.80:1
I run a 2.56:1 ratio for longer, mostly highway, rides and just change the front sprocket for more spirited canyon carving and around town.
So, if you go with a 16T ft/ 41T rr. you will have a 2.5625:1 ratio and a simple change of the front to a stock 15T will give you a 2.7333:1 ratio.
Roughly a 500 rpm change at 65-70 mph.

Daniel
 
For what it's worh my 85 GS750EF has altered gearing.IIRC it's1 up in thefront and 3 in the backVery happy with that,a long story on how it got that so I'll leave it there.
 
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