TSC1 Nautique Top Speed? |
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Nautique2001
Grand Poobah Joined: June-14-2004 Location: Massachusetts Status: Offline Points: 2832 |
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Posted: August-09-2014 at 9:57pm |
What is the top speed range of a TSC1 generation hull with GT40 supposed to be? I'm only squeezing out 44-45mph on a good day. Thought it was supposed to be more like 47mph. Of course I never push my boat that hard, but give it a short blast of WOT now and then.
Ken |
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Orlando76
Grand Poobah Joined: May-21-2013 Location: Mount Dora, FL Status: Offline Points: 3108 |
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Which prop are you running?
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Nautique2001
Grand Poobah Joined: June-14-2004 Location: Massachusetts Status: Offline Points: 2832 |
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Not sure the size but it's an OJ four blade. It's only three years old.
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Orlando76
Grand Poobah Joined: May-21-2013 Location: Mount Dora, FL Status: Offline Points: 3108 |
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45 sounds maybe right to me. 4 blade should give lower top end. I think Tim Benj is the best to answer this.
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Nautique2001
Grand Poobah Joined: June-14-2004 Location: Massachusetts Status: Offline Points: 2832 |
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Thanks, Tim knows everything props. Was hoping I could grab another MPH or 2.
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AAM196
Gold Member Joined: October-23-2012 Location: Pittsburgh, PA Status: Offline Points: 846 |
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Yep.. I just docked up.. lake was flat and I ran WOT for 2-3 minutes with 4 adults and 6 little kids at 47ish at 4700rpm. I also run the 422. The elevation where I am is 2,465' above sea level.
Trying to find out more about this boat and what it can do. TSC1 with carbon parts I know they stripped out most interior and put a few carbon mods on it. and moved the gas tank to the front of the boat. I am guessing they improved the hole shot but top end remains just shy of 50. Moon looks great.. full tomorrow. |
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gun-driver
Grand Poobah Joined: July-18-2008 Location: Pittsburgh, Pa Status: Offline Points: 4127 |
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Andy are you down the lake again???
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AAM196
Gold Member Joined: October-23-2012 Location: Pittsburgh, PA Status: Offline Points: 846 |
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Paul, you nailed me... here with friends till Wednesday night... Hopefully it rains so I can ski! If I keep this up I will need turn signals on my boat so I can merge into traffic lol... They will be gone this time tomorrow.
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TRBenj
Grand Poobah Joined: June-29-2005 Location: NWCT Status: Online Points: 21186 |
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Ken, 45-46 is about right for a ford powered TSC, it's not a fast hull. The OJ isn't helping you out in that regard though- it's good at knocking the rpm back and some claim it helps the slalom wake a touch by lifting the stern and pushing the nose down- which the opposite of what you want for top end speed. I've always found the acmes to be faster, especially on the 1.23 boats. The 422 is most likely your best bet, there isn't a 3-blade with more than 15" pitch, the fords tend to like 15.5" to keep the revs in check where the engine makes power.
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M3Fan
Grand Poobah Joined: October-22-2005 Location: United States Status: Offline Points: 3185 |
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422 spinning 4900ish puts me at around 46, and that boat is screamin' at that speed. I feel like the Fords are actually pissed off at the higher RPMs while the Chevys don't even seem to sweat it. Either way 46 for a GT40 is basically amazing from what I've seen.
YouTube Vid from a while back of me WOT |
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2000 SN GT40 w/99 Graphics/Gel
2016 SN 200 OB 5.3L DI https://forum.fifteenoff.com |
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AAM196
Gold Member Joined: October-23-2012 Location: Pittsburgh, PA Status: Offline Points: 846 |
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I max at 4,700rpm... don't even like running it that hard.
Joel, I was confused for a sec looking at your dash and realized you actually have a 2000 despite the graphics.. Need a pic of the 83Mmc.. |
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Toertel
Gold Member Joined: August-26-2013 Location: Atlanta Status: Offline Points: 775 |
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Man, we never run over 4200 rpm(lanier is a busy lake) with the stock 3 blade and the fresh air exhaust that puts us at 40 mph.
From what I read, the FAE takes about 2mph off due to different back pressure. So 45 ish seems to be the magic number |
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1994 Sport Nautique
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AAM196
Gold Member Joined: October-23-2012 Location: Pittsburgh, PA Status: Offline Points: 846 |
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Oh... I run at 3,200-3,800... just saying the limit on my boat is 4,700 and I wouldn't want any more.
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TRBenj
Grand Poobah Joined: June-29-2005 Location: NWCT Status: Online Points: 21186 |
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I push the throttle down as far as it will go... And I always want more! What's with everyone thinking they're going to damage something if you actually go WOT? Don't be scared!
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kytom2
Gold Member Joined: July-25-2007 Location: Maysville Ky Status: Offline Points: 698 |
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But Tim, not everyone could blow the boat motor up, and still have a fleet to get back out on the lake with.
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Orlando76
Grand Poobah Joined: May-21-2013 Location: Mount Dora, FL Status: Offline Points: 3108 |
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How many people on here over rev'd an engine on a CC? Should this be a new thread? Bc I'm always told give it to it and the thought of being sans a ski machine for a few months worries me.
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TRBenj
Grand Poobah Joined: June-29-2005 Location: NWCT Status: Online Points: 21186 |
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You must have me confused with someone else, Tom... Try as I might, I've yet to blow one up.
I think that is an unfounded concern, which was my point. |
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Hansel
Senior Member Joined: September-21-2006 Location: Twin Cities, MN Status: Offline Points: 415 |
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There was a time where I babied the boats/cars that I drove. Then I realized 1) these engines were designed with this kind of use in mind, 2) it is more fun to drive it a bit harder and 3) sometimes by driving a performance engine "softly" you can do more harm than good (e.g. as I understand it, shifting gears in a car at low RPMs to "save fuel" is actually much harder on the tranny). So now I make sure to thrash my engines from time to time and as long as that doesn't become systematic abuse I don't think it hurts anything. Of course I could be wrong, in which case somebody set me straight. |
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kytom2
Gold Member Joined: July-25-2007 Location: Maysville Ky Status: Offline Points: 698 |
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Just giving you a hard time Tim...lol
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skutsch
Grand Poobah Joined: June-19-2008 Location: Racine, WI Status: Offline Points: 2874 |
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Geez, when we are out barefooting, We run WOT for 2 or 3 hours a night. Now that is only for 3 to 4 minutes (probably more like 2 or 3 minutes) at a time and then idle in between, but still it's WOT or close to WOT. I always thought they were designed to run like that.
I agree with Tim, when I roll that throttle to the stops, I always am looking for more too... |
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MrMcD
Grand Poobah Joined: January-28-2014 Location: Folsom, CA Status: Offline Points: 3750 |
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Running the Acme 224 Prop on our 95 SN I have seen 5,400 RPM once running with one person on board and the speedo's read 50. Usually it tops out at 5,200 with 2 or 3 people on board and 47/48 MPH. I run wide open often but never for any length of time. Less than 30 seconds unless someone like my brother makes me race him for fun.
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gun-driver
Grand Poobah Joined: July-18-2008 Location: Pittsburgh, Pa Status: Offline Points: 4127 |
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Mark
My ’95 runs the same numbers as yours GPS. I’m running a 1442 but our hull is different. I run it wide open a lot(cause I like to) those RPMs wont hurt these motors |
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M3Fan
Grand Poobah Joined: October-22-2005 Location: United States Status: Offline Points: 3185 |
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I'm pretty confident that it's one of the nicest MCs of the era in the country. Just put 10 hours on it last week, it was fabulous. Flickr Photos of 83 MC |
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2000 SN GT40 w/99 Graphics/Gel
2016 SN 200 OB 5.3L DI https://forum.fifteenoff.com |
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AAM196
Gold Member Joined: October-23-2012 Location: Pittsburgh, PA Status: Offline Points: 846 |
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Cherry MC Joel! Love the black ones... I find most are silver then blue. Our 83 is red metal flake.
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harddock
Platinum Member Joined: June-04-2008 Location: Toontown, MA Status: Offline Points: 1763 |
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Ski Nautique is a 3 event ski boat meant to be able of achieving and maintaining a solid 36 mph. The hull was not designed for speed and if it is to do what it was designed for at 36, well 45 plus may have to suffer.
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JPASS
Grand Poobah Joined: June-17-2013 Location: Orlando Status: Offline Points: 2283 |
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I backed off ours this past weekend at 4900 RPMs cause I remember reading something in the manual about it.
She had more and I wanted to keep going, but I was worried I was going to regret it. Needless to say she hit about 45. Not bad for 1700+ hours. |
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'92 Correctcraft Ski Nautique
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Toertel
Gold Member Joined: August-26-2013 Location: Atlanta Status: Offline Points: 775 |
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What happens to ya'll temp gauge when you run it past 4500?
Mine is usually pegged but once we run over 4500 it creeps up |
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1994 Sport Nautique
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TRBenj
Grand Poobah Joined: June-29-2005 Location: NWCT Status: Online Points: 21186 |
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Pegged? In what direction?
A hard run followed by a return to idle can sometimes cause the temp to creep up 10-20 deg... Any more than that and something isn't right. You shouldn't see the temp creeping up while you're at speed- that's not normal either. You should be able to run at high rpm for extended periods (think barefooting) without issue. |
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Nautique2001
Grand Poobah Joined: June-14-2004 Location: Massachusetts Status: Offline Points: 2832 |
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Is it the pitch of the prop that causes the stern to dig deeper and bow to ride lower?
Ken |
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TRBenj
Grand Poobah Joined: June-29-2005 Location: NWCT Status: Online Points: 21186 |
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No.
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