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After having changed my rear tire and going with a larger tire than stock (130/90-17 instead of 130/70-17) I find that my gearing has also be affected significantly. I've also be recalling those who love the 750 FD swap VS those not so happy with it, and it seems to me that it's a matter of being a special or a standard in addition to the style of riding done on the bike.
Changing the rear like I did, I find that at 65 I'm turning 4k now, which seems pretty close to what specials get with the 750 FD. That tells me that going with the 750 FD on a standard, particularly with a larger tire than stock, is going to result in lower RPM's than a special would since even the stock rear on a standard is a good 2 inches larger in outside diameter, and the larger 90 on my standard is a good 2 inches larger even. So it seems that 3Phase is right about it being tough to corner in the twisties on his standard, and others who say it's not with their specials are right also, as the smaller rear tire makes for a lower effective final ratio.
What I'm trying to get to here, is that clearly the 750 FD swap is highly desirable for most specials, but of slightly less desirability on a standard unless it does mostly highway riding with little surface street or twisty road riding. I'm finding with just a tire change, that I'm having to stay in 1st in parking lots, and on normal corners I'm having to get down closer to idle in 2nd than I might feel good about if I was trying to keep it moving briskly. I'm also finding that on my commuting ride that I'm not spending as much time in 5th, but rather I'm often running in 4th just to keep the RPM's at 3k or higher.
So, I just might be offering to trade a prepped 750 FD and driveshaft with the copper pipe spacer already in place for a good 1100 FD to replace my leaking one, I'm just not at the moment seeing any advantage to swapping in the 750 FD with this tire, and I'm liking the extra clearance I get with it (and not being inseam challenged at 6' the extra height is not an issue for me) and the 130/90-17 seems to be a LOT easier to find than the 70 is. I'm really enjoying being able to pull into my driveway without the center stand scraping on the curb.
Changing the rear like I did, I find that at 65 I'm turning 4k now, which seems pretty close to what specials get with the 750 FD. That tells me that going with the 750 FD on a standard, particularly with a larger tire than stock, is going to result in lower RPM's than a special would since even the stock rear on a standard is a good 2 inches larger in outside diameter, and the larger 90 on my standard is a good 2 inches larger even. So it seems that 3Phase is right about it being tough to corner in the twisties on his standard, and others who say it's not with their specials are right also, as the smaller rear tire makes for a lower effective final ratio.
What I'm trying to get to here, is that clearly the 750 FD swap is highly desirable for most specials, but of slightly less desirability on a standard unless it does mostly highway riding with little surface street or twisty road riding. I'm finding with just a tire change, that I'm having to stay in 1st in parking lots, and on normal corners I'm having to get down closer to idle in 2nd than I might feel good about if I was trying to keep it moving briskly. I'm also finding that on my commuting ride that I'm not spending as much time in 5th, but rather I'm often running in 4th just to keep the RPM's at 3k or higher.
So, I just might be offering to trade a prepped 750 FD and driveshaft with the copper pipe spacer already in place for a good 1100 FD to replace my leaking one, I'm just not at the moment seeing any advantage to swapping in the 750 FD with this tire, and I'm liking the extra clearance I get with it (and not being inseam challenged at 6' the extra height is not an issue for me) and the 130/90-17 seems to be a LOT easier to find than the 70 is. I'm really enjoying being able to pull into my driveway without the center stand scraping on the curb.
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