Shibby, 15f opinion on this thread

[mrchinup]

, we had our own little shootout here in Barnegat Bay New Jersey.
Ski #1 2005 15-f Stock
Ski #2 2005 STX-R 14/20 Solas
Ski #3 2003 STX-R Stock
Ski #4 2006 RXT Super Charged Stock

Let me start off by saying that the STXR in my opinion is still the quickest accerating ski of all time. It beat 2 or 3 RXP's last year in light chop, but let me talk about what happened on this day.

QUICKEST SKI TO TOP SPEED
1. 2005 STXR 14/20 Solas
2. 2003 STXR Stock
3. 2006 RXT SuperCharged
4. 2005 15-f

FASTEST SKI TOP SPEED
1. 2006 RXT SuperCharged
2. & 3. Both STX-r's(Identical every run in top Speed)
4. 2005 15-f

FASTEST SKI IN CHOP
1. 15-f
2. 2005 STX-R 14/20 Solas
3. 2003 STX-R Stock
4. RXT SuperCharged

BEST HANDLING SKI
1. & 2 Both STX-R's
3. 15-f
4. RXT SuperCharged

All riders switched up skis and raced all of the above. Hands down every race both STX-R's would pull a boat lenght on the other skis. Matter of fact, we noticed that by hanging all our weight over the handlebars the STX-R's awesome hole shot hookup even propelled them off the line even better. It would take the RXT about 1/4 mile to catch up and crawl past them. The 15-f allthough almost as fast top end as the STX-R's was back a few boat lenghts because of the worst holeshots compared to the rest.
The RXT felt the most dangerous especially coming off the gas as it would start wandering left and right. The 15-f was truely a delight to ride as it was smooth and very comfortable. The STX-R's allthough not as comfortable as the 15-f were very predicatable and almost impossible to to wipe out even in 6 in chop.
Top speed #'s
1. RXT 64-64.5
2. STX-R's 61.5-63
3. 15-f 60-61.5

If you are going to ride in a bay or any body of water with some chop then both the 15-f and STX-R would be a wise choice as they seem to love the chop. Riding in a lake or very calm conditions then I'd say the RXT would be a very enjoyable ski. These are just opinions of what we experienced and different rider experience and different crafts coujld yield different results.
In the end my favorite was my STX-R with just a 14/20 Solas Prop. It was like a streetbike accerating and along with the 15-f just dominates in choppy water allthough not as good as the 15-f.

1999 GP1200 62mph
High Octane, Riva Everything, No Tripples
2005 STX-R 62mph
14/20 Solas
1998 GP800 58mph
14/18 Solas
R&D Valves



Posts: 899 | Location: Ortley Beach, NJ | Registered: April 20, 2003GP1200R-acer
Posteddocument.write(''+ myTimeZone('Wed, 28 Jun 2006 04:54:52 GMT-0700', 'June 28, 2006 07:54 AM')+''); June 28, 2006 07:54 AM June 28, 2006 07:54 AMGreat Info. I always thought the 15F was just as fast off the line and had a couple MPH on the standard STXR, but I guess not.

2002 Canadian Novice 1200Ltd Champion


Posts: 1351 | Location: Toronto/Ontario | Registered: June 27, 2001NJGP1200
Posteddocument.write(''+ myTimeZone('Wed, 28 Jun 2006 18:50:19 GMT-0700', 'June 28, 2006 09:50 PM')+''); June 28, 2006 09:50 PM June 28, 2006 09:50 PMI have heard that alot too. However I have 1 other friend that has a 15-f and when it was stock last year It was getting beat holeshot too and was about 1-2 mph slower top end. So thats 2 15-f's that were not as fast as the STXR.
Once my friend put the PowerFilter and he reduced some weight off the craft, it was then pulling even with my stxr holeshot.
He now has the cams and piston kit along with the MS109 and he has hit 69 mph GPS with amazing holeshot.

1999 GP1200 62mph
High Octane, Riva Everything, No Tripples
2005 STX-R 62mph
14/20 Solas
1998 GP800 58mph
14/18 Solas
R&D Valves



Posts: 899 | Location: Ortley Beach, NJ | Registered: April 20, 2003NJGP1200
Posteddocument.write(''+ myTimeZone('Wed, 28 Jun 2006 18:57:49 GMT-0700', 'June 28, 2006 09:57 PM')+''); June 28, 2006 09:57 PM June 28, 2006 09:57 PM1 More thing to note...
It seemed that with both 2-Stroke STX-R's that when you were crusing say at about 20 mph and hit the gas they would rocket to top speed, where as the 4-Strokes seemed to keep on building more top speed, especially the RXT, kinda taken its sweet ole time to yield 64-64.5 MPH speeds. THis was noticeable by all riders too, but again, once the RXT had its time to catch up it would start crawling past both STX-R's. Only in the calm cove though, as the 15-f and STX-R's were literally raping the RXT in the Open Bay Chop, I mean raping it. THe RXT even with its weight could not hookup for **** in anything near 1 FT. chop. Thats why I think the RXT in stock form is better suited for some1 on a lake or calm conditions once they take care of that off throttle wandering where the ski is literally almost sliding out left and right on deacceleration.

1999 GP1200 62mph
High Octane, Riva Everything, No Tripples
2005 STX-R 62mph
14/20 Solas
1998 GP800 58mph
14/18 Solas
R&D Valves



Posts: 899 | Location: Ortley Beach, NJ | Registered: April 20, 2003cue03


Posteddocument.write(''+ myTimeZone('Thu, 29 Jun 2006 20:57:24 GMT-0700', 'June 29, 2006 11:57 PM')+''); June 29, 2006 11:57 PM June 29, 2006 11:57 PM

quote:
Once my friend put the PowerFilter and he reduced some weight off the craft, it was then pulling even with my stxr holeshot.
He now has the cams and piston kit along with the MS109 and he has hit 69 mph GPS with amazing holeshot.

Is this on pump gas? ALL he has is the cams/piston kit/powerfilter and drop some weight? No prop change or anything?

I would buy a 15F tomorrow if I thought i could hit 69 on pump gas.

[Jarrett]

I read this post on some other site and it makes even less sense now

I've owned a modded 64 MPH STXR, ridden with a modded 66 MPH 15F and currently have a modded RXP. Even at the Stage I level my RXP was pulling those skis out of the hole and walking them in the chop. Don't get me wrong, I loved my modded STXR and really liked the 66 MPH 15F. And granted a $40,000 race gas SC'ed 15F is one of the best endurance and closed course skis ever built. But even a slightly modded RXP or RXT would kill a near stock STXR or 15F in the chop, on glass and anywhere inbetween in a straight line drag race starting from a dig.

[Shibby1485]

that's interesting... i've never ridden a STXR so i can't comment on that comparison

but the 15F vs RXT .... i consider myself a pretty good rider. i'm light so i don't have alot of momentum getting tossed all over the place. i'm well fit, muscular, and i'll hold onto any ski thru any conditions and can keep a ski hooked up as best to my abilities.


i did notice that the 15F stayed hooked up in the chop alot better than an RXT.... but the RXT will still DESTROY the 15f in ANY conditions. i mean the RXT can go back and forth and tinker with the 15f like it's a joke and wave at the rider. ask Vman, lol.... it was funny. i mean, no chance whatsoever in any conditions.

the 15F hull handles superb, turns on a dime, handles the tough well, stays hooked up.... BUT it's a beating on the rider.

the RXT will lose hook up in 1-2 foot chop and larger, but not enough that it will just let a 15F go by or even catch up. the RXT is far superior in the rough as far as less pounding on the rider.

the 15F got to top speed faster than an RXT? what a joke..... i dont even gotta comment on that, haha.

for a NA ski, the 15F is very crisp in the bottom end. it loses it quickly, but that initial punch is very snapy. BORING tho on glass. i mean GOD is it slow. half throttle and whack it WOT, it doesn't have nearly the pull of an RXT.

if the 15F had torque and speed like an RXT, i'd own one. even tho the hull is a rougher ride, wetter, harder on the rider, i had alot of fun on it... i wouldn't want a kawi motor in it tho. i like the sound and feel a rotax motor puts out.

whoever wrote that thread must have tested an RXT with a toasted wear ring or something.

[J3ff]

My penis is bigger than your penis.

[mrchinup]

I thought that thread was a little off. 64 mph top speed on the rxt was slow. I know a yamaha 4 stroke isn't even close at take off as an rxt. I thought it would be the same for a 15f, but i have never raced or ridden one.

I did race a cat type race boat the other day, i saw him coming down the lake so i waited for him. He blew me away, he had to be going 90. He passed me like i was standing still. Someone needs to put a prop on one of these things if possible.

[Shibby1485]

Someone needs to put a prop on one of these things if possible.

AMEN to that! i think the next PWC inovation is gonna be a different type of drive system. but then u lose saefty with an exposesd driveline.... wont exactly be a PWC anymore with dual counter rotating props hanging out back

[RXP-REX]

AMEN to that! i think the next PWC inovation is gonna be a different type of drive system. but then u lose saefty with an exposesd driveline.... wont exactly be a PWC anymore with dual counter rotating props hanging out back

It's probably been mentioned on here before, but I was reading an article in some PWC magazine where a Mechanical engineer said that even with the best pump setup on these skis we're only transfering 50% of our HP or less to the water.

[way2fast]

Jarrett and Shibby are right on. The RXP will blow the other skis out of the water from dead stop right up to top speed. No contest. The RXP used in the above test must have had a slipping clutch or worn wear ring. My Ultra will toast either of the other Kawis at all speeds (in calm water) but gets butt kicked by the RXP. The STX style hulls are great on a closed circuit course because of their turning ability (also because of the gobs of additional HP added by Team Kawi) but rough water skis they are not. Last summer while doing a demo, an experienced rider on a 15F couldn't catch me on a NA Honda R12. The water was extremely choppy and the Kawi was loosing suction and battering the rider to near death.

Richard

[jawz]

I'd really like to see an stxr stock keeping with an rxt! I'm sure an rxp would be able to do circles around a stxr.

[shhr]

I ride 75% of the time with a friend who has a 15F that has had the ride plate modded and a new prop and under every condition the 15f is behind my RXT and it was the same result just not as bad when I had my 03 SC the 15f is a very reliable 61-62 mph ski it is not on the same level as a RXT this is my opinion after 2 years of riding with the15f