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Running Honda 90 outboard at full RPM for long periods of time?
On Tue, 27 Jun 2006 17:38:44 -0400, "D-unit" wrote:
"JohnH" wrote in message .. . On Tue, 27 Jun 2006 11:17:15 -0500, "Dan J.S." wrote: "Capt John" wrote in message ups.com... wrote: Ok the honda lawnmower has a governer that stops it at around 3600rpm. That is NOT full speed for the lawnmower but a comfortable zone. If you have that many people on board using a 90HP motor your nutz. You want to cruise at a decent speed with a severely underpowered motor. Either buy another motor or just buy a twin. Dan J.S. wrote: The manual states to not run my Honda four stroke 90 HP (2001 model) for more than 5 minutes at full RPM. The throttle actually backs off automatically after about 1 minute of full RPM action. Anyone know if running at full RPM can really affect the engine? When I have 14 people on my 25 foot Bennington pontoon boat, running on anything but full RPM is slow (below 13 MPH according to my GPS) (especially when I go against the current on the river that I am on). The reason I bring this up is that when I use my Honda lawn mower to mow the lawn, that thing runs at full RPM from start to finish, which is sometimes hours - the mower has been working like new for the last 3 years. Dan Your lawn mower is running with a very light load on it, and it does have a govenor. Running your outboard for extended periods of time at or near wide open throttle will greatly reduce it's life. Your best bet is to invest in another prop with less pitch in it as the one you have now is no good when you have a lot of people on board (is it really safe to have that many people on board?). Or you can swap propellers when needed, but doing what you are right now, start saving up for that next engine, you'll need it soon. OK thanks! The bennington is rated at 17 people or 2300 lbs... its a pontoon boat, and there are many here like it. Good suggestions. I guess I will just run at below 4000 rpm when cruising, and only move up to 6,000 or so when going short distances. Thanks!! That appears to be 17 females, with no other gear on board. Those are *small* people at 135 lbs each! Does the 2300 lbs not include gear, furniture, coolers, etc, etc.? -- John H ****************************************** ***** Have a Spectacular Day! ***** ****************************************** 17 half naked females... Arent boats wonderfull??  db You gotta love 'em! LOL! -- John H ****************************************** ***** Have a Spectacular Day! ***** ****************************************** |
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