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I just put the Acme 1433 on and I love the pulling performance and the elimination of the growl. However, I travel a pretty good distance between home and riding location. I'm burning fuel like crazy on this run. What has been everyone's experience with this prop and what is the most economical cruising speed?
IDK about speed exactly with the prop but when cruising i try to make sure my ballast is empty, and stay around 22-25 as you get into the 3500 RPM + range fuel consumption really goes up.
I never understood why this burns more fuel. With my old prop I would have to run a lot of rpms just to plane out with all the weight. Now with my 1433 I'm on plane in no time and not running high rpms as long.
its a matter of how far you drive once you are on plain. if you have a high pitched prop it might run more rpms for a few seconds to get on plane but once on plain you will run less, and the longer you sustain this speed to more your fuel savingsQuote:
Originally Posted by snyderaaron
with a low pitched prop it will get on plain easier but once on plain the engine speed ill be high for an equivalent boat speed thus burning more fuel for longer runs at a sustained speed.
slicks, how long is your run to your riding spot? I am running an 1847 and if we dont trailed to the river it is probably 4-5 miles from us and it seems to burn a good amount of fuel as well
Generally you want to get up on plane and then back off the throttle till you are at a lower speed but still on plane. Use your wakeplate to keep the boat sitting up on top of the water. Less RPM and less resistance means better fuel economy. Slower cruising speed takes a little longer but you can get some sun and hear the tunes better.
We usually take it about 25 mph, right around 2,900-3,000 rpm unloaded with the 1847. And it actually right at 6 miles from the lake house to the mouth of the river
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Our run is approx 8-10 miles. We do our thing for approx 3-4 hours and head home. Seems like we burn at least 1/2 tank when doing this. I usually try to keep it no higher than 3200 rpm when making this run.
Last weekend when we dropped our kids and their friends off at the house, my wife and I acted like the two old farts we are and made close to the same run but never got over 1200 rpm. Had Margaritaville Radio playing on Pandora and I don't think the needle moved more than a very slight fraction. I guess it's like smoking meat...low and slow is the way to go.
David hearing that you too are burning significant fuel on your run with the 1847 makes me feel better. I was starting to feel a bit of buyer's remorse with the 1433. I was thinking the extra lip on the 1847 might help, but maybe not.
Depending on how many Gallons you are putting in the tank at the end of your day,Quote:
Originally Posted by slicks
4 hours of boarding, and does this include the trip to the boarding and return?
Thats apx 5 gallons an hour at 20 gallons for 1/2 tank and thats pretty normal on these boats.
Top off the tank before I launch every time. So, yes burning approx 20 gallons.Quote:
Originally Posted by mmandley
In this particular case, i guess normal is good.
I've owned many different boats...from a 15 ft Boston Whaler with a 60hp 4 stroke Mercury outboard and a 12 gallon tank to a 30 foot Scarab with very strong 454 and 120 gallons. In the little Whaler I could go pretty much the whole weekend on those 12 gallons. With the Scarab, I gotta admit, I could not care any less than I did about fuel consumption. I was young and all about blazing across the water...and with 120 gallons on board, I didn't really need to worry about running out before I could make it back to the dock.
I hope the day never comes when I'm more worried about the fuel bill than I am about the enjoyment of the boat.
I run 3-4 miles up to our riding area. Usually run around 2800-3500 RPM and always run up to WOT for a while after she's good and warmed up. Then again, I run the 547 or 1161 or whatever it is. Get great mileage.
we usually run 6 miles unloaded to the river mouth, then load up the ballast (aprox 1800 lbs) then ride up river stopping to pick up fallen riders and such for 9 miles to the hwy 19 bridge, then turn around and head 9 miles back down to the river mouth and if we are done, we then dump ballast and go home, if not we turn around again and go back up river and this is usually around 1/2 tank
You guys would love the Willamette River here. When we did that January surf set we were filling ballast at the launch, motored out 100ft and jumped in.
I don't have numbers to prove it, but when I ran the 13.7x17.5 stock I got better "mileage" empty, horrible when loaded down. Vice versa to some degree with the 1847. Don't do many big long empty runs though.
Quote:
Originally Posted by bergermaister
Same at the Hagg we drive apx 1 minute to the middle of the lake, fill ballast and its boarding time LOL.
Longest place we go to drive is maybe 10 minutes and that's at Green Peter to get to the smooth arm off the camping site ramp.
Well we have a couple options, we go drive the boat from the lake house to the river which is 6 miles by water or we can trailer the boat 16 miles to the river launch ramp, launch and immediately jump in. Either way it's gas. I just you burn slightly less trailering?Quote:
Originally Posted by bergermaister
Id rather burn it in the boat and enjoy it LOLQuote:
Originally Posted by rdlangston13