TSC1 Nautique Top Speed?
Printed From: CorrectCraftFan.com
Category: General Correct Craft Discussion
Forum Name: Common Questions
Forum Discription: Visit here first for common questions regarding your Correct Craft
URL: http://www.CorrectCraftFan.com/forum/forum_posts.asp?TID=34358
Printed Date: November-24-2024 at 2:52pm
Topic: TSC1 Nautique Top Speed?
Posted By: Nautique2001
Subject: TSC1 Nautique Top Speed?
Date Posted: August-09-2014 at 9:57pm
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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 ------------- http://www.correctcraftfan.com/diaries/details.asp?ID=1052&sort=&pagenum=4&yrstart=1986&yrend=1990" rel="nofollow - Nautique 2001 |
Replies:
Posted By: Orlando76
Date Posted: August-09-2014 at 10:00pm
| Which prop are you running? |
Posted By: Nautique2001
Date Posted: August-09-2014 at 10:08pm
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Not sure the size but it's an OJ four blade. It's only three years old. ------------- http://www.correctcraftfan.com/diaries/details.asp?ID=1052&sort=&pagenum=4&yrstart=1986&yrend=1990" rel="nofollow - Nautique 2001 |
Posted By: Orlando76
Date Posted: August-09-2014 at 10:17pm
| 45 sounds maybe right to me. 4 blade should give lower top end. I think Tim Benj is the best to answer this. |
Posted By: Nautique2001
Date Posted: August-09-2014 at 10:33pm
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Thanks, Tim knows everything props. Was hoping I could grab another MPH or 2. ------------- http://www.correctcraftfan.com/diaries/details.asp?ID=1052&sort=&pagenum=4&yrstart=1986&yrend=1990" rel="nofollow - Nautique 2001 |
Posted By: AAM196
Date Posted: August-10-2014 at 12:06am
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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. https://www.youtube.com/watch?v=NoWBXhhT27E" rel="nofollow - 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. |
Posted By: gun-driver
Date Posted: August-10-2014 at 12:08am
| Andy are you down the lake again??? |
Posted By: AAM196
Date Posted: August-10-2014 at 12:13am
| 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. |
Posted By: TRBenj
Date Posted: August-10-2014 at 11:17pm
| 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. |
Posted By: M3Fan
Date Posted: August-11-2014 at 1:46am
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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. https://www.youtube.com/watch?v=hcEtpizIUao&list=UUiOWL2YeslxeAZRxdZi67CQ" rel="nofollow - YouTube Vid from a while back of me WOT ------------- 2000 SN GT40 w/99 Graphics/Gel 2016 SN 200 OB 5.3L DI https://forum.fifteenoff.com |
Posted By: AAM196
Date Posted: August-11-2014 at 10:41am
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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.. |
Posted By: Toertel
Date Posted: August-11-2014 at 10:48am
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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 ------------- 1994 Sport Nautique |
Posted By: AAM196
Date Posted: August-11-2014 at 11:03am
| 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. |
Posted By: TRBenj
Date Posted: August-11-2014 at 11:13am
| 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! |
Posted By: kytom2
Date Posted: August-11-2014 at 11:19am
But Tim, not everyone could blow the boat motor up, and still have a fleet to get back out on the lake with.  ------------- |
Posted By: Orlando76
Date Posted: August-11-2014 at 11:24am
| 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. |
Posted By: TRBenj
Date Posted: August-11-2014 at 11:45am
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. |
Posted By: Hansel
Date Posted: August-11-2014 at 11:48am
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. |
Orlando76 wrote:Posted By: kytom2
Date Posted: August-11-2014 at 11:57am
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Just giving you a hard time Tim...lol ------------- |
Posted By: skutsch
Date Posted: August-11-2014 at 1:21pm
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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... ------------- Our http://www.correctcraftfan.com/diaries/details.asp?ID=4669" rel="nofollow - 98 Sport Nautique My Dad's 63 Ski N |
Posted By: MrMcD
Date Posted: August-11-2014 at 10:14pm
| 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. |
Posted By: gun-driver
Date Posted: August-11-2014 at 10:47pm
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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 |
Posted By: M3Fan
Date Posted: August-11-2014 at 11:10pm
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. https://www.flickr.com/photos/m3fan/sets/72157631025694122/" rel="nofollow - Flickr Photos of 83 MC ------------- 2000 SN GT40 w/99 Graphics/Gel 2016 SN 200 OB 5.3L DI https://forum.fifteenoff.com |
Posted By: AAM196
Date Posted: August-12-2014 at 3:07pm
| Cherry MC Joel! Love the black ones... I find most are silver then blue. Our 83 is red metal flake. |
Posted By: harddock
Date Posted: August-12-2014 at 5:10pm
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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. ------------- http://www.correctcraftfan.com/diaries/details.asp?ID=4487" rel="nofollow - 1998 Ski Nautique |
Posted By: JPASS
Date Posted: August-12-2014 at 9:42pm
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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. ------------- '92 Correctcraft Ski Nautique |
Posted By: Toertel
Date Posted: August-13-2014 at 12:47am
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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 ------------- 1994 Sport Nautique |
Posted By: TRBenj
Date Posted: August-13-2014 at 9:33am
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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. |
Posted By: Nautique2001
Date Posted: August-13-2014 at 9:44am
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Is it the pitch of the prop that causes the stern to dig deeper and bow to ride lower? Ken ------------- http://www.correctcraftfan.com/diaries/details.asp?ID=1052&sort=&pagenum=4&yrstart=1986&yrend=1990" rel="nofollow - Nautique 2001 |
Posted By: TRBenj
Date Posted: August-13-2014 at 10:08am
| No. |
Posted By: Gary S
Date Posted: August-13-2014 at 10:09am
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It's the angle(rake) of the blade to the hub ------------- http://www.correctcraftfan.com/diaries/details.asp?ID=1711&sort=&pagenum=1&yrstart=1966&yrend=1970" rel="nofollow - 69 Mustang HM SS 95 Nautique Super Sport |
Posted By: Toertel
Date Posted: August-13-2014 at 10:29am
I should not post in the middle of the night after some drinks... What I wanted to say is, that the temp is always the same once warm ( shy of 160) even after longer runs at 4000 ish. But when running at top end it creeps up a bit (+10) and once back to lower rps drops in seconds to what I see all day ------------- 1994 Sport Nautique |
Posted By: backfoot100
Date Posted: August-13-2014 at 10:37am
That's normal. Run it like you stole it. ------------- When people run down to the lake to see what's making that noise, you've succeeded. Eddie |
Posted By: Nautique2001
Date Posted: August-13-2014 at 10:40am
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I assume the engine is working a lot harder with a more aggressive angle. The bow of my boat does seem to ride low to the water at higher speeds. ------------- http://www.correctcraftfan.com/diaries/details.asp?ID=1052&sort=&pagenum=4&yrstart=1986&yrend=1990" rel="nofollow - Nautique 2001 |
Posted By: TRBenj
Date Posted: August-13-2014 at 10:48am
Nope, that's not the way to think about it either, Ken. The tsc hull is a slow one- it plants the nose by design in order to make the slalom wake small. A prop like that oj you have exacerbates that slightly since it has less aft rake than something like an acme 422. That will lift the stern slightly, which pushes the bow down.Toertel, I'm not convinced that elevated temps at high speed are normal, my PCM fords certainly don't behave that way. Your RWP may be marginal. |
Posted By: Toertel
Date Posted: August-13-2014 at 11:01am
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The rwp is less than a year old, new impeller and hose tight. We run it on lake lanier which is right now around 86. And I can only see it after we run pedal to the metal/run it hard (temp then is little over 160), once rpms below 4200 will drop it again immediately On the engine it says WOT rpm continuous should be 4200 and max/peak 4800. Speed at 4200 is 40ish with the FAE. Ya'll rev it much higher? Should I just disregard the engine plate ? ------------- 1994 Sport Nautique |
Posted By: TRBenj
Date Posted: August-13-2014 at 11:07am
| 5200 here, 80 degree water and it doesn't creep up. |
Posted By: Toertel
Date Posted: August-13-2014 at 11:18am
I'll check hoses etc again and keep an eye on it. Anyway doesn't your engine have a plate on it that says the same re rpm as mine on the black plastic cover next to the GT-40 sign? I haven't even tried to run above 4800 so no input from my end re top speed once over these rpms ------------- 1994 Sport Nautique |
Posted By: TRBenj
Date Posted: August-13-2014 at 11:36am
No plate but I'd ignore it if it did... I tear off the tag on my mattress too. 
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Posted By: Hollywood
Date Posted: August-13-2014 at 11:39am
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Tim is misleading you a bit. He doesn't have a GT40, let alone an EFI Ford... Also, some of you GT40 owners could be running 160 thermostats. However, if your engine normally holds 160 you probably have the 143 thermostat. ------------- |
Posted By: Toertel
Date Posted: August-13-2014 at 11:44am
Thx Hollywood. But I did listen to him anyway and ordered a 422 prop, hoping that Nautiquehunter can borrow me a prop puller ------------- 1994 Sport Nautique |
Posted By: TRBenj
Date Posted: August-13-2014 at 11:46am
Irrelevant for the purposes of this conversation, as the bottom end and cooling system are the same, and the top end is close enough to make an apples to apples comparison. At least in terms of cooling ability and how safe it is to spin higher than the "recommended" rpm. True story on the 143 vs 160 stats but that shouldn't change anything other than where the temp is regulated- the behavior of the temp under load should not change. |
Posted By: AAM196
Date Posted: August-13-2014 at 12:48pm
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I never took a look to see what thermostat my boat has but I'd suspect HW is right... Seb, mine idles at 160F but running wot for a few mins mine dips even cooler maybe 158ish. I'd check your water pump and hoses... make sure it is sealed up well and you have the right impeller in. As far as running wide open of course pulling out I roll throttle down to the floor then I back to the desired speed. for me footing is typically around 3800-3900 rpm right around 40.. |
Posted By: Toertel
Date Posted: August-13-2014 at 12:56pm
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I'll check again this weekend and maybe post vid on youtube. This only happens when I run over 4500 after a longer run at 4000 ish and drops right away once I'm back at 4200 ish. When I run it at 4200, even for extended times, it doesn't change the temp vs idle or ski load. Anyway, once I get the 422 on it, I'll let ya'll know what it did to the speed at comparable rpms ------------- 1994 Sport Nautique |
Posted By: JPASS
Date Posted: August-13-2014 at 1:04pm
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My temps fluctuate a bit, but not more than 10-15 degrees.......although its hard to tell with the new temp gauge I recently installed. As long as it never hits 180, I'm not worried. The graduations make it difficult to get an accurate reading. http://www.summitracing.com/parts/VDO-310239/" rel="nofollow - VDO Gauge ------------- '92 Correctcraft Ski Nautique |
Posted By: Toertel
Date Posted: August-13-2014 at 1:08pm
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JPASS good to know I'm not alone. Mine stays well below 180 even when I rev it past 4500 ------------- 1994 Sport Nautique |
Posted By: JoeinNY
Date Posted: August-13-2014 at 1:25pm
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I don’t know that I would agree that it is completely irrelevant. While under most cases where my temp creeps up under high speed runs I find that it is due to a slight deficiency in my cooling system (IE my hi-tech strainer/transmission cooler has some weeds in it) the tune of the engine at wot can significantly effect the heat load of the engine and the ability of the cooling system to react to it. IMHO/limited experience the GT40 engines run relatively lean on the top end compared to the big ol calibrated leaks Trbenj or myself are currently running and that can greatly increase cylinder head temp and show up on the temp gauge. Either way if it gets hot(hotter) at speed you might want to find out why or not run it like that. Check strainer, for belt slippage at high speed, leaks, then impeller, if those are good change the thermostat out/check for other system blockages. Still having an issue check the timing and do some plug chops. If all that is perfect and you still have some high speed high temp issues then look at the circulating pump, I have seen the vanes on cheapo replacements rust off to nothing, and have seen the expensive bronze bidirectional ones where the impeller spun on the shaft internal to the pump. Both of those I only found after I caused massive internal damage to the engine but running it hot wide open – apparently the valves and the pistons aren’t supposed to be in the same place at the same time. ------------- http://www.correctcraftfan.com/diaries/details.asp?ID=1477 - 1983 Ski Nautique 2001 1967 Mustang 302 "Decoy" http://www.youtube.com/watch?v=cO5MkcBXBBs - Holeshot Video |
Posted By: skutsch
Date Posted: August-13-2014 at 1:36pm
I hate that when that happens... ------------- Our http://www.correctcraftfan.com/diaries/details.asp?ID=4669" rel="nofollow - 98 Sport Nautique My Dad's 63 Ski N |
Posted By: AAM196
Date Posted: August-13-2014 at 3:15pm
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Ok... just out on lake tinkering with perfect pass etc... and decided to calibrate to gps and I found everything dead on at 34.2 mph and 36 mph but I found the paddle wheel was lying to me wot and showing 47.2 yet the fastest I read on gps was toggling between 45 and 46. again I am at 2461ft above sea level if that matters. Crazy that the airguide was more accurate. So I wonder if replacing the paddle wheel would help increase the accuracy. At 36 mph everything just sounds and feels right on that boat! |
Posted By: M3Fan
Date Posted: August-13-2014 at 5:37pm
At higher speeds the paddle wheel is really just informational which is why it wasn't used as a speed input for anything under wakeboard speeds in the pre-SG PP versions. Upgrade to SG? At 36 everything feels right because that's exactly what the boat was designed to do primarily. Pull tournament skiers through the course at 36mph/58kph straight and true. ------------- 2000 SN GT40 w/99 Graphics/Gel 2016 SN 200 OB 5.3L DI https://forum.fifteenoff.com |
Posted By: AAM196
Date Posted: August-14-2014 at 4:11pm
| How does star gazer deal with river currents or do you just have to calculate manually? |
Posted By: quinner
Date Posted: August-14-2014 at 6:00pm
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My TSC2 206 has been clocked at over 80mph and that's a fact, ask Paul Gundriver, Joe in NY or Timmy, they can all verify!! |
Posted By: skutsch
Date Posted: August-14-2014 at 6:02pm
That was going backwards too. Would have been faster cept for that pesky log... ------------- Our http://www.correctcraftfan.com/diaries/details.asp?ID=4669" rel="nofollow - 98 Sport Nautique My Dad's 63 Ski N |
Posted By: IAughtNaut
Date Posted: August-14-2014 at 6:05pm
------------- bring the ruckus http://www.correctcraftfan.com/diaries/details.asp?ID=5347" rel="nofollow - 2000 Pro Air |
Posted By: Hollywood
Date Posted: August-14-2014 at 6:49pm
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Why do you think he didn't bring his boat this year? Damn campground hasn't removed that log yet. ------------- |
Posted By: 8122pbrainard
Date Posted: August-14-2014 at 8:50pm
Think about this! It will show actual speed on the water! You are not flying an airplane! ------------- /diaries/details.asp?ID=1622" rel="nofollow - 54 Atom /diaries/details.asp?ID=2179" rel="nofollow - 77 Tique 64 X55 Dunphy Keep it original, Pete < |
Posted By: MrMcD
Date Posted: August-14-2014 at 11:39pm
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If the river is flowing at 3 mph it will affect your GPS, just run both directions on the river and average your speed with GPS. As far as heating up while running hard make sure your timing is adjusted properly. A couple degree's too much can easily heat up the heads or if more advanced burn a piston. I know the Chevy blocks don't want more than 36-37 degree's or with Vortec heads more like 28 degree's timing at full throttle above 3,000 rpm. Fords are close to those numbers but I don't know for sure. You can check this with a set back timing light, they have a dial that lets you check the timing at various RPM, timing at idle is not nearly as important as proper timing at 3,000-3,500 RPM. |
Posted By: AAM196
Date Posted: August-15-2014 at 1:27am
Peter.. rivers have currents.. so yes.. it is like flying an airplane in a way. WINK. If I have the speed set to 36... wouldn't it pull we thru course up river at 39 and down at 33? So I guess what I am asking is for the extra 1k I am spending, does it have a setting that automatically calculates this for me. |
Posted By: MrMcD
Date Posted: August-15-2014 at 3:39am
| Kind of like landing an hour early on a 5 hour flight because you get a favorable tail wind. |
Posted By: scootdogydog
Date Posted: August-15-2014 at 9:55am
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remember, they work off GPS, so set at 36 will get you to 36...however, for WOT, current will make it go faster, so average them to get an accurate number. ------------- http://www.correctcraftfan.com/diaries/details.asp?ID=7183" rel="nofollow - 1999 Python 1980 Ski Tique 1968 Mustang WIP |
Posted By: TRBenj
Date Posted: August-15-2014 at 11:01am
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Seems like people are talking different speed control systems and confusing the issue. Both stargazer and earlier versions of pp have an rpm mode that you can use if you'd like. If using speed control mode on an earlier version I uses a paddle wheel and it measures speed over water. It's inaccurate above 40 (dads 03 said it ran 49 on pp but GPS said 45-46). Stargazer uses GPS to set the speed in speed mode, which measures speed over land. If you are pulling through an anchored slalom course, stargazer speed mode will give you accurate speed through the buoys. If you are free skiing on a river and concerned about speed over water, rpm mode in either system will get you there, as will speed mode in an earlier paddle wheel version. Zero off for the DBW boats operates the same as pp SG. |
Posted By: skutsch
Date Posted: August-15-2014 at 12:00pm
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Like Tim says, if you are using a GPS based system (Speed control or speedometer) that device will indicate actual speed over land (or in this case water). So if it says you are going 35 mph and you are going upstream against the 5 mph current, you are moving at 35 mph relative to a fixed object located on the earth (such as a slalom buoy). But if you were to also have system that uses the water to approximate speed (such as a paddle wheel or even an airguide) because the water is actually moving, when you head upstream you would have an indicated speed (on the airguide or paddle wheel system ) of 40 mph and down stream speed would indicate 30 mph. None of this changes the fact that relative to that fixed slalom buoy you are still going 35 mph which is what would be indicated on your GPS based speedometer. Having said all that, I do not know what the official USA Waterski rules are with respect to slalom speeds in a course on a river. ------------- Our http://www.correctcraftfan.com/diaries/details.asp?ID=4669" rel="nofollow - 98 Sport Nautique My Dad's 63 Ski N |
Posted By: TRBenj
Date Posted: August-15-2014 at 12:13pm
I know what you meant but you mis-stated an important distinction... GPS speed is never measured over water (which could by its nature, be moving due to current, etc), but always over land. Think of it as measuring speed over the river (or lake) bottom. Rpm and local speed sensors (pitots, paddle wheels, etc) are only capable of controlling speed over the surface of the water. Without looking at the rule book, I'm fairly certain that tournament scores require accuracy in regards to timing through the course, and does not contain provisions for speed (regardless of how it's measured or how much it varies). |
Posted By: skutsch
Date Posted: August-15-2014 at 12:34pm
I concur, minor clarification of my parenthetical statement required. It's been so long since I have done in any real engineering, that what I think in my head doesn't always come out the same in written form. HA! ------------- Our http://www.correctcraftfan.com/diaries/details.asp?ID=4669" rel="nofollow - 98 Sport Nautique My Dad's 63 Ski N |
Posted By: AAM196
Date Posted: August-15-2014 at 1:23pm
Yeah... you need a little more rpm going up river... a good driver has no problem compensating... trying to find out how to get the wife there.. 
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