ridenred27 Posted January 14, 2006 Report Share Posted January 14, 2006 http://media.boatmad.com/gallery/d/685-3/wankelturbo.wmv i hope this isnt a repost. impressive. i wonder how fast they were going? Quote Link to comment Share on other sites More sharing options...
ChevyMan1972 Posted January 14, 2006 Report Share Posted January 14, 2006 HOLY FUCK!!!! That is truly badass!!! Dan Quote Link to comment Share on other sites More sharing options...
Total Sign Posted January 14, 2006 Report Share Posted January 14, 2006 I would be shocked if that was 70. They dont have the torque to spin a decent sized prop. Drove a rotary jet boat once, accelerated like hell to 60. Wait until a day when there is any chop, turbo replacement gets expensive. Quote Link to comment Share on other sites More sharing options...
Tinman Posted January 14, 2006 Report Share Posted January 14, 2006 Should have gone SBC like all of the fast RX7s Quote Link to comment Share on other sites More sharing options...
coty061885 Posted January 14, 2006 Report Share Posted January 14, 2006 Fucking awesome. At first I was like, "that doesn't seem too fast." Then he got on it and the turbo was screaming, damn that was cool. Quote Link to comment Share on other sites More sharing options...
El Karacho1647545492 Posted January 14, 2006 Report Share Posted January 14, 2006 when wake just turns into a white blur, you're going fast i'd still rather have the RX-7 though Quote Link to comment Share on other sites More sharing options...
Science Abuse Posted January 14, 2006 Report Share Posted January 14, 2006 There is a company commercialy offering rotary marine engines....and they're Deisel! Quote Link to comment Share on other sites More sharing options...
Science Abuse Posted January 14, 2006 Report Share Posted January 14, 2006 I would be shocked if that was 70. They dont have the torque to spin a decent sized prop. Incorrect. That was not a 5 screw destroyer, it was a lil jetboat. Youre trying to spin the props fast, and for that you need hp. You need torque to accelerate all the drivetrain (if its a twin screw), but you're top end will be the same as any other 600hp boat that size. Quote Link to comment Share on other sites More sharing options...
copperhead Posted January 14, 2006 Report Share Posted January 14, 2006 WOW, that looks like way too much motor for a boat that small. I remember a few years ago asking on here how a rotary boat would do, and everyone jumped my shit about it failing due to lack of TORQUE....I now see that's not a problem. Quote Link to comment Share on other sites More sharing options...
morabu Posted January 14, 2006 Report Share Posted January 14, 2006 DAYUUM!! that little as boat was movin! Quote Link to comment Share on other sites More sharing options...
Lustalbert Posted January 14, 2006 Report Share Posted January 14, 2006 Still just not as satisfying as the sound of a blown v-8 cracking open the throttle plates. Quote Link to comment Share on other sites More sharing options...
wnaplay1647545503 Posted January 14, 2006 Report Share Posted January 14, 2006 Still just not as satisfying as the sound of a blown v-8 cracking open the throttle plates. I have the 454 with captains call exhaust. I bring it topside when I want the added attention. Sounds sweet. Quote Link to comment Share on other sites More sharing options...
Guest powers Posted January 14, 2006 Report Share Posted January 14, 2006 just what I want to be surround by water with an unreliable power plant. Quote Link to comment Share on other sites More sharing options...
Guest GMoney Posted January 14, 2006 Report Share Posted January 14, 2006 I can say that boat is way fast. At first when he pulled out of the no wake, I thought gay but when the boat is going like 50 and he hits and it twists the boat sideways. Crazy just Crazy. The HP to weight on that boat has to be great. Any chop in that boat good night. I have been in pro sponsored bass boats with 300+ hp at 80+ mph, race boats with triple 600+hp supercharged V8's, and some fast turboed jetski's. Anything nearing 100 or over on the water is way fast. Quote Link to comment Share on other sites More sharing options...
Science Abuse Posted January 15, 2006 Report Share Posted January 15, 2006 just what I want to be surround by water with an unreliable power plant. worked fine for about ten thousand years. http://www.downtheroad.org/southamerica/images/New_Folder8/DSC00150.JPG Quote Link to comment Share on other sites More sharing options...
Lustalbert Posted January 15, 2006 Report Share Posted January 15, 2006 The wind will come back eventually. Once a dorito loses its powdered coating, it is gone for good. Quote Link to comment Share on other sites More sharing options...
ChevyMan1972 Posted January 15, 2006 Report Share Posted January 15, 2006 Here go and look at the website. If you click on the "Boat project" at the top it will tell you all about it. http://www.xtremerotaries.com/ They claim it makes 800hp at 9500 RPM and goes 120 mph max speed. Wich tells the story. Here is another vid of it next to a bigger boat with a v8. http://www.xtremerotaries.com/main2/Quicksilver/60-102mph.wmv Dan Quote Link to comment Share on other sites More sharing options...
Total Sign Posted January 15, 2006 Report Share Posted January 15, 2006 Incorrect. That was not a 5 screw destroyer, it was a lil jetboat. Youre trying to spin the props fast, and for that you need hp. You need torque to accelerate all the drivetrain (if its a twin screw), but you're top end will be the same as any other 600hp boat that size. You know more than I do. How many 100mph boats have you built? 150 mph? When the camera goes down to the speedo, pause the video. Quote Link to comment Share on other sites More sharing options...
Lustalbert Posted January 15, 2006 Report Share Posted January 15, 2006 so that is a roll race on water. Interesting. Quote Link to comment Share on other sites More sharing options...
Science Abuse Posted January 15, 2006 Report Share Posted January 15, 2006 You know more than I do. How many 100mph boats have you built? 150 mph? When the camera goes down to the speedo, pause the video. I dont hear you proving me wrong. I see a tach, but none of the smaller gauges are remotely readable. One might be the speedo, and it might be at about 70, but fuck, it could be a temp gauge in C. Hp moves boats, torque moves generaters, which move electic motors, which move big boats. How many 100mph boats have you built with 600lb ft cummings diesels sporting only 300hp? Zee-Roe. Physics applies everwhere, you want to accelerate fast, you need HP and torque. If you just want to go fast, all you need is HP and patience. It's a big single rotary, it could be anywhere between 300 and 700 hp. I'll take 300hp and 60 mph without complaint. Quote Link to comment Share on other sites More sharing options...
Guest GMoney Posted January 15, 2006 Report Share Posted January 15, 2006 completly stocks Boats larger and heaver than that with little 4 banger at 150hp will run 50mph Quote Link to comment Share on other sites More sharing options...
copperhead Posted January 15, 2006 Report Share Posted January 15, 2006 completly stocks Boats larger and heaver than that with little 4 banger at 150hp will run 50mph But they won't get there very fast. Quote Link to comment Share on other sites More sharing options...
Total Sign Posted January 15, 2006 Report Share Posted January 15, 2006 Eric, a boat is always "accelerating." Always has a load on it. Never coasts. I dont touch diesels, but there are a few out there running 120. I have yet to see any 4 banger boat run an honest 50 on GPS. Quote Link to comment Share on other sites More sharing options...
Nitrousbird Posted January 16, 2006 Report Share Posted January 16, 2006 Boats in general are unreliable/maintance intensive as hell WITHOUT adding a rotary into the mix. I will say that in a boating application, a turbo rotary doesn't have to deal with the cooling issues that a automotive application has to deal with. The lake is the radiator, and can keep the intercooler nice and cool too. The boat is fast as fuck, no doubt about it. It also didn't look overly stable, was pretty small, and 1/2 the boat was the motor! Eric: there are some performance diesel applications. I have an article from a couple years ago in a boating mag (in my work truck, so I can't quote it right now), where I believe it was Baja was offering one of their bigger boats w/ twin diesels and a surface drive setup. It was faster than the exact same boat with a more conventional stern drive setup w/ BBC's making significantly more HP. Quote Link to comment Share on other sites More sharing options...
Maro Posted January 17, 2006 Report Share Posted January 17, 2006 WOW! Quote Link to comment Share on other sites More sharing options...
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