first, i realize they are two different riding positions. i have researched both of them, and the f3 (which i dont like the riding position). i ride both sport and tour 2 wheels. ......
second, (*1) i asked about the frame modifications to see if there was an inherent flaw discovered which warranted a frame modification, and if so why, and what year would be the better frame for reliability. when they upgraded my king quad frame, i never noticed a problem with the old one. they would just crack under certain extreme conditions in certain spots. knowing makes it easier to identify when purchasing. .....
third, ...... (*2) the ST that I am looking at it is a 15. I am aware they do not produce that model anymore. ...... just because they stop using one engine that has been in service for 10 years or so and gone to another, doesnt mean the new engine is better (although i would hope so). in this case, it may be, but it doesnt mean the old one had problems. remember the 7.3 ford diesel and how much "better" the state of the art replacement was? technically, since they changed the compression of the 998, upgrading the engine, didnt BRP invest a little more R&D in it, possibly making it a better engine?
i would say thanks for taking the time to respond to my questions, ......
AZ, seeing that you're a new poster here, I'm giving you a little leeway & simply removing the unnecessary comments from your post in the quote above (see these
...... bits) but I've left the original post as is - as a Moderator here I'm giving you a heads up that the sorta stuff removed is not acceptable here! You really should check out the
Forum Rules (click on the bright green
Forum Rules at the top of each page

)
Furthermore, and I'm putting this out there for everyone, not just you AZ - a reminder that you really can't tell from the written word exactly what level of offence any other poster may be attempting to convey, but immediately jumping to the conclusion that they were aiming for the highest level says
a lot more about
you & 'your offendability' than it does about
them, especially when it appears to everyone else that they were simply trying to help by providing info you may not have been aware of! :lecturef_smilie:
_________________________________________________________________________________________________________________________________
OK, that bit of 'housekeeping' over, re the bolded bit at
(*1), there were no significant issues with the frame prior to 2013, the major reason for the 'across the board/entire model range' frame upgrade/mods was simply to make room to accommodate the dimensionally larger & heavier 1330 Triple Cylinder motor & improve the brakes (Brembo), ride, & handling a little to suit along the way.

hyea: . All the 2013 RT's & the 2013 & on RSS/ST's that retained the V-Twin motor benefited as a result; and so, once the heat issues were resolved, they arguably became the pinnacle of the V-Twin versions of those model Spyder's available, what with better brakes, ride, handling,
AND they still had the revvier, peppier, more exciting engine!! :yes:
(*2) Re the engine, if you take the time to go looking back thru the early threads here, you'll see that many people, particularly in North America, simply weren't used to a high revving motor that thrived on revs, used a little bit of oil between scheduled changes as a result, & didn't deliver a heap of power/torque below about 4,000 rpm - something that caused a lot of rider angst, some difficulties in learning how to get the best from the motor, and even some failures due to 'mis-treating' the motor/clutch/gearbox by never revving it hard enough & letting it lug around well below the engine's power/torque band & the 'lock-up' revs of the SE clutch

.... and for once, BRP listened! :shocked: (but they
STILL haven't listened about those bloody poor excuses for black round things to keep the metal bits off the road they have the audacity to call OE tires! :cus: ) Anyhow, back to the motor - hence the 2014 move in the continuing models away from the revvier, peppier, more exciting to ride V-Twin engined machines to the lazier but lower revving 1330 Triple that undeniably has scads of torque from down low in the rev range, but never really gets any better than that.... :sour:
Now you
juuust might detect
a little of my bias showing in those last couple of para's, but I freely admit that I
PREFER the revvier, peppier, & more exciting to ride V-Twin powered RT that I ride over
any of the 1330 Triple models I've test ridden since! So far, there hasn't been a 1330 Triple released that's done anything much for me; I reckon the Triple engine is a lazy motor, and even if one of the Tuning Guru's waves their magic wand over the ECU & matches that to some intake & exhaust upgrades to suit,
it's STILL a lazy motor in a heavy machine :banghead: . The 1330 Triple is a motor that comes nowhere near delivering the adrenalin &/or buzz of pure enjoyment that I get just about every time I ride a V-Twin engined Spyder

hyea: So if you too want an exciting ride, you might want to keep that in mind, & maybe do those test rides in order to make up your own mind about that?! :dontknow:
Enjoy, & good luck with your Spyder Hunt! :cheers: