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Old     (darinmg)      Join Date: Jul 2006       08-17-2007, 8:13 PM Reply   
What is over reving? I have heard people say to be careful when getting a new prop, that you don't over rev. But I have talked to others that say barefooters run there boats at 5K rpms all day long. What are your rpms at ~23mph?
Old     (detonate69)      Join Date: Apr 2001       08-17-2007, 9:59 PM Reply   
I run right around 3k rpms when boarding about that speed.
Old     (rallyart)      Join Date: Nov 2006       08-18-2007, 12:51 AM Reply   
Over revving is running the engine at above its rated speed. New engines have rev limiters that prevent it in most situations. If a prop is too easy to spin it might let the engine run too many rpm and over stress the parts.
Running an engine at high revs for a long time is stressful but if the engine is designed for it it only means higher wear but not damage.
Old     (heeb_v215)      Join Date: Feb 2007       08-18-2007, 1:24 AM Reply   
Over reving is rpm based , has nothing to do with speed,if an engine is designed to run between 4800 and 5200 RPM 5300 is over reving mainly causing internal failure , spinning bearings and throwing connecting rods!!!!!!!!
Old     (rodmcinnis)      Join Date: Sep 2002       08-20-2007, 11:28 PM Reply   
Most engines have a "red line" around 6000 RPM that you shouldn't exceed under any circumstances. If operated above the red line the engine could suffer an immediate and catastrophic failure.

Running the engine at high RPMs, even under the red line, can shorten its life dramatically. It can also make it consume a lot more oil and possibly overheat.

Barefooters will typically run their boats at the maximum RPM while they are barefooting. Most of the barefooters I have known don't ride all day long!

If I am pulling at 23 MPH my RPM will be around 2800 RPM.

Old     (etakk7)      Join Date: Apr 2006       08-21-2007, 8:07 AM Reply   
I talked to a MC technicion who said that my LTR engine has a rev limiter (I believe at 5200) that will shut down a couple cylinders when you hit it. It is a "safe mode" basically.


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