I have checked several threads about the bars. So far no where I have seen any kind of measurement to indicate what "length" bars I have or what "short reach" bars measure. All I ever find is "2-3 inches further back" Without some sort of reference as to where the beginning is I have no idea. Unless somewhere I missed an actual reference to a this point.
Only trying to help...
Yours isn't a new problem, there's
a lot of info already on the Forum about just this subject, people have been posting on it since the first F3's came out over 10 years ago. So try entering the word '
Handlebars' or even "
Short reach" (with the quotation marks), and then ticking the '
Search titles only' box in the Search field).
That said, you need to read thru the whole thread I linked earlier, the tape measure in post #18 of that thread should help with at least some of the actual measurements you asked for (only it uses a tape measure & cloth tape instead of red & green lines

), but do go on to read the next page, there's more discussion about which bar is what over there that might be important in whatever choice you make.
However, you also need to remember that whatever bars you fit, those bars won't simply project back horizontally toward the rider from their mounts, they'll stick up from the mounts at an angle and lean back toward the rider, so even with an actual measurement as shown in your pic earlier, the distance between the bars and the rider will be somewhat different due to the geometry of that lean.
And also remember that there is some leeway and adjustment available in that angle - so even if someone else who is exactly the same height, arm, torso, and leg length as you does give you a measurement from the bar mount to their crotch, you could fit those exact bars to your Spyder and end up with a different measurement, simply because you mounted the bars at a slightly different angle, making the geometry of
YOUR installation a little different to the geometry of
THEIR installation and so giving you a different reach.
There's only a little scope for adjustment in any of the OEM bars on the F3's, so there's always going to be a little bit of guesswork and a judgement call involved concerning which OEM bar will suit you best, and buying any other OEM bar based on those measurements
MIGHT help you, but there again, it might not... So if you
REALLY want to be sure that you can adjust any replacement bar you choose to purchase, you should probably be looking for Heli-bars, which are pretty much infinitely adjustable in more ways than any of the OEM bars - they don't look sexy, but if you've got the $$ & the space for them, they do work!
Just Sayin'
