Rigging a new Scorpion 12x7'2"

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Hardtail
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Re: Rigging a new Scorpion 12x7'2"

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Pages 6-19 6-20 6-21
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Re: Rigging a new Scorpion 12x7'2"

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Pages 6-22 6-23 6-24
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Re: Rigging a new Scorpion 12x7'2"

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Starting procedure for Fuel Injected
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Starting fuel injected Lycoming
Starting fuel injected Lycoming

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Re: Rigging a new Scorpion 12x7'2"

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Rigged the 520 on the Scorpion, what a difference it is, it will do 70 MPH with ease, and now that it's dry, I tested it in mud, blows right through, I'm very pleased with this setup
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got the 520 on the Scorpion
got the 520 on the Scorpion
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Hardtail
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Re: Rigging a new Scorpion 12x7'2"

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Progress, Got the Golf Cart top on today
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Got the Top on today
Got the Top on today
Sits nice in water
Sits nice in water

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Slidin Gator
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Re: Rigging a new Scorpion 12x7'2"

Post by Slidin Gator »

Hardtail,
I ain’t gonna go golfin with ya, but you’re welcome to come run with me, I’ll show you dry, and them some. We can give that 520 a good work out.
I still think I-10 is the Mason Dixon line.
2013 Mike Stossel Boats, 13' x 7' deck over, IO-540, 74" NGQ less winglets.

Hardtail
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Re: Rigging a new Scorpion 12x7'2"

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Hi Slidin Gator,
Yeah, I don't play golf either, just the top is a great way to hide from the hot sun, went riding at our club today and the water was up from yesterdays rain, we were able to make the loop. Hope this virus goes away soon so we can get out and ride soon, seems all the ramps are closed right now. This off time gave me the time to do this build, I had already bought all the materials, so I decided to get to work on it, now I'm glad I did. Today I got 3.7 MPG, and with the IO-360 I was getting 3.5 MPG, so I have not lost any efficiency with the extra power, my thought is that the 520 isn't working as hard to do the same riding.

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Slidin Gator
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Re: Rigging a new Scorpion 12x7'2"

Post by Slidin Gator »

Yes, it's a good thing I had several projects stacked up, completed the second one this weekend. It's a terrible use of Turkey season.

That's some damn good mileage either way, but it's probably gonna change to GPM when you start using that extra power up North. I don't track MPG, but, I burn 7-9 gal/hr running ground, so do the other boats, including LS power.

How about handling etc., which engine do you prefer (probably too early to tell)?
I still think I-10 is the Mason Dixon line.
2013 Mike Stossel Boats, 13' x 7' deck over, IO-540, 74" NGQ less winglets.

Hardtail
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Re: Rigging a new Scorpion 12x7'2"

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Slidin Gator wrote:
Mon Apr 13, 2020 6:32 pm
Yes, it's a good thing I had several projects stacked up, completed the second one this weekend. It's a terrible use of Turkey season.

That's some damn good mileage either way, but it's probably gonna change to GPM when you start using that extra power up North. I don't track MPG, but, I burn 7-9 gal/hr running ground, so do the other boats, including LS power.

How about handling etc., which engine do you prefer (probably too early to tell)?
I haven't tracked the GPH, but it's a great idea, so you are tracking Tach time against gallons used ? So 31 gallons would give me about 3.75 hours at 30 mph that would be 112 miles, which is 3.7 MPG. My next ride I will write down the tach time and let you know.

Definitely the 520, it has the extra power to do everything, should run the hill with ease, and the weight difference is totally unnoticeable. I even added a second 13 gallon tank in the hull, So now I have 31 usable gallons, I used a racing fuel cell with a gas gauge, plumbed it to the rear tank so the over flow flows into the rear tank and the fuel return line goes to the front tank, this way I can use up the rear tank first, when I switch to the front tank with fuel gauge, I know when it's time to head back without running short of fuel. The tank that came with the hull is only 18 gallons usable, which just isn't enough for the riding I do.

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Slidin Gator
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Re: Rigging a new Scorpion 12x7'2"

Post by Slidin Gator »

31 gal/3.75 hrs is 8-1/4 GPH, but I’m sure you had some idle time in there.

It’s easier to plan your fuel by the hour, the terrain is going to dictate progress, but the hourly burn rate is usually similar unless frogging. It’s a long day to put 6 hours on the tach.

How does prop pitch and trailer RPM compare between the two engines?
I still think I-10 is the Mason Dixon line.
2013 Mike Stossel Boats, 13' x 7' deck over, IO-540, 74" NGQ less winglets.

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