Vegas Needs Speed

I just took my newly purchased 87 Vegas xt w 220 laser efi w quicksilver 28 " prop w 4" setback on jackplate out on the water for the first time. Top end with me alone was 76 mph with 6500 rpm. Add 3 kids and could only get up to 66-70. What could be the problem? Is the quicksilver prop a dog? Bow lift ok by myself but could use more with load. Engine height didn't make much difference whether high or low. Any way to get excessive steering torque to ease up? Any suggestions would be greatly appreciated. Thanks Greg

 

Greg: 

    First rule of thumb, if you have excessive torque of the steering wheel, your engine height is too high. You need to lower it probably a couple of inches based on your description of the problem. It is possible that that particular propeller or your gearcase shape has been altered and is wrong. Usually a Vegas with a 28 Chopper with the propshaft centerline, 2 - 2 1/4 inch below the pad, will run a strong 80 and carry your passengers at 76. It sounds like your problem revolves around lift. Check the pad and make sure it is flat and does not have a hook in it. All these things, (excessive height, untrue bottom, poor propeller or gearcase) could contribute to your problem. You are not that far off, so I would say it would be one of the above. 

Randy

 

 

Please submit whatever questions you have to IHRTechTalk@yahoo.com.  All questions and answers selected will be displayed on this page as they come in.  Note: though all boaters are welcome, priority may be given to I.H.R. members.  Randy can not be held responsible for any advice given.  Though his information and expertise is second to none, he has no control over what you do with your boat.  It is up to you to boat safely and act responsibly, and his advice is only to be used as a guidance for your high performance boat/motor of which you are the one responsible for the risks involved.

Thanks,
Mark C.

 

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