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| Speed Debate https://www.mudmotortalk.com/mmt_v2/viewtopic.php?f=5&t=18021 |
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| Author: | 4Cody4 [ Mon Apr 25, 2011 3:26 pm ] |
| Post subject: | Speed Debate |
The RIG MM Brand:Beavertail Long Shaft Horsepower:24 HP Boat Brand: Go Devil Boat Size:1644 Boat Layout: Open layout, split seats, front deck Speeds | Shallow Water: Speeds | Deep Water: 15-16 mph Total Boat Load With Gear Etc: 2 guys (370 ish total) 6 gal gas, and misc. gear (30lbs or so) Conditions Tested In: Boat was tested in a shallow lake (for up north) a max depth of about 8 feet or so. There was a slight minimal chop, but nothing I would call waves. Running pretty steady 15.5 mph or so in depths varying from 2 to 8 feet deep. Speeds based on a Garmin Oregon hand held GPS laying on the boat seat. Comments: I spoke with the dealer who sold me the boat (brand new boat) and he thought that with a 24hp long tail I should see speeds around 20mph. I thought that 15-16 with two people was maybe a tad slow, but right in the ball park. The motor comes standard with a 9x7 prop on it according to the website and although I bought the motor used it has the original prop which looks close to brand new. I have not measured the prop yet to make sure it's not worn way down. Should I be seeing speeds around 20 mph? Should I consider looking at a 9x6 prop to see if it performs a little better at higher RPM's? I don't have a tach on the motor yet to see what RPM's i'm running at in the water. What do you guys think about these speeds, I've only had the boat out a few times and haven't had a gps in the boat with just myself. The boat dealer said he would expect to see 16-18 mph with 3 people in the boat with a 1644 GD and a 24hp longtail. I'm not unhappy with what I'm getting from the boat, it seams to do fine. However if there is an easy fix to make the rig a little quicker or more efficient I would be all for it. |
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| Author: | SCmudder7071 [ Mon Apr 25, 2011 8:32 pm ] |
| Post subject: | Re: Speed Debate |
I am no pro by any means but Wat these other fellars say is that after the break in period it'll gain some mph. Maybe weight distribution? I had a 20hp mblt on an alumacraft and it was okay but moved gas tank, battery to front and the best i hit according to my smartphone gps (i know its not the best) was 23 with no load beside the beer cooler |
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| Author: | UNCLE-J [ Mon Apr 25, 2011 8:41 pm ] |
| Post subject: | Re: Speed Debate |
If you run 20-22mph solo, then that sounds right . Run it with just one person. The smaller the motor, the lesser the loa it can carry. |
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| Author: | 4Cody4 [ Tue Apr 26, 2011 9:17 am ] |
| Post subject: | Re: Speed Debate |
Sounds good fellas, I'll go for a ride alone and post back. What is the shaft length/angle that is recommended for the Go Devil boats? Any chance that the beavertail isn't hanging in the water at quite the right angle? |
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| Author: | Gigafowl [ Tue Apr 26, 2011 6:48 pm ] |
| Post subject: | Re: Speed Debate |
Well - the 9x6 will definitely work better - but your dealer is mis-informing you on speeds with that combo.... When I ran a 9x7 solo I got maybe 1 mph faster but under loads more like 2 to 3mph slower - cause the engine did not "wind up" into it's powerband.... I had a 23 GDLT with 9x6 on a 16x48 GDSD hull and got 21 mph solo - 19mph with 2 200lb guys and 17mph with 3 200lb guys... Same motor on a 16x44 yielded 18mph solo / 16mph with 2 guys and could not break plane with 3 and only ran about 12mph.... You would run faster with an 18x44 --- see if the dealer will consider a quick trade since he mis-informed you --- the 18x44 is far more likely to hit the speeds he advertised to you under loads..... It will also run faster later on with a bigger 35 GDSD too.... |
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| Author: | 4Cody4 [ Tue May 10, 2011 10:35 am ] |
| Post subject: | Re: Speed Debate |
Had the boat out this weekend and was running about 17-18 with myself and a cooler (plus gas, battery etc). I'm hoping it won't plow with 3 people but I'll have to see. Anybody else have a rig set up like this? How does it carry a load? I know Giga said his wouldn't break plane with 3 people in it, is this the case for others as well? Thanks, |
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| Author: | kibb [ Tue May 10, 2011 12:18 pm ] |
| Post subject: | Re: Speed Debate |
X2 on what Giga said. Your dealer obviously doesn't know what he's talking about. Go with the 9x6. By the way, they all pretty much run like turds with a load and three people. |
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| Author: | 4Cody4 [ Wed May 11, 2011 7:21 am ] |
| Post subject: | Re: Speed Debate |
I've found that with not many people having these boats/motors up here, there isn't too much in the way for good advice. Like I said above I still really like the boat, and I'll almost never have 3 people in it so if I can stay on step with 2 people and a load I'm good with that. Even though they are slow I still really like the longtail, it fits my application aside from me hauling to much gear when I go hunting. I'm sure eventually I'll feel the need for speed like everybody else and start shopping for a surface drive, I just hope that's a few years down the road. |
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