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Old 12 December 2004, 02:29   #11
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have just change prop to a four blade 13.5" x 25" At 48knts 5550RPM 18.2 GPH(UK). 35Knts 10GPH
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Old 12 December 2004, 16:36   #12
TIM
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Quote:
Originally Posted by ashleyd
have just change prop to a four blade 13.5" x 25" At 48knts 5550RPM 18.2 GPH(UK). 35Knts 10GPH
Where are you getting the figures from ???? Have the New Etec's gone all 'smartcrafty' ???
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Old 13 December 2004, 03:12   #13
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etec comes with smart gauges similar to opti
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Old 13 December 2004, 03:51   #14
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Quote:
Originally Posted by ashleyd
have just change prop to a four blade 13.5" x 25" At 48knts 5550RPM 18.2 GPH(UK). 35Knts 10GPH
Do you have more detailed info about the fuel figures? How much fuel at 2000 RMP, 2500RMP, 3000RMP, ...
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Old 14 December 2004, 16:47   #15
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Quote:
Originally Posted by Seaharrier
Do you have more detailed info about the fuel figures? How much fuel at 2000 RMP, 2500RMP, 3000RMP, ...


Anyone that can translate this into fuel figures ltr/Nm?

Performance
The motor we tested was the Verado 250-hp coupled with the Crestliner TS202, and the Verado’s results were impressive. The Verado pushed the Crestliner ( 1425 lbs) to a top speed of 57 mph at 6000 rpm and its time to plane was just 3 seconds. We were able to go from 0 to 30 mph in 5.1 seconds. After crunching all the numbers we came up with the Verado’s best cruise speed to be 28 mph turning 3500 rpm and consuming 6.7 gph. All these numbers reflect three people on board with a full 60-gallon fuel tank.

RPM MPH Knots Total GPH MPG
1500 6.9 6.0 1.6 4.31 69
2000 9.4 8.1 2.6 3.60 70
2500 18.6 16.1 4.2 4.42 77
3000 24.0 20.9 5.2 4.62 80
3500 28.0 24.3 6.7 4.18 82
4000 30.6 26.6 7.8 3.92 87
4500 38.1 33.1 10.4 3.68 87
5000 47.7 41.4 15.7 3.04 88
5500 51.1 44.4 19.6 2.60 87
6000 57.0 49.6 28.1 2.03 91


Roy
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Old 15 December 2004, 11:17   #16
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Quote:
Originally Posted by RibRoy
Anyone that can translate this into fuel figures ltr/Nm?

Performance
The motor we tested was the Verado 250-hp coupled with the Crestliner TS202, and the Verado’s results were impressive. The Verado pushed the Crestliner ( 1425 lbs) to a top speed of 57 mph at 6000 rpm and its time to plane was just 3 seconds. We were able to go from 0 to 30 mph in 5.1 seconds. After crunching all the numbers we came up with the Verado’s best cruise speed to be 28 mph turning 3500 rpm and consuming 6.7 gph. All these numbers reflect three people on board with a full 60-gallon fuel tank.

RPM MPH Knots Total GPH MPG
1500 6.9 6.0 1.6 4.31 69
2000 9.4 8.1 2.6 3.60 70
2500 18.6 16.1 4.2 4.42 77
3000 24.0 20.9 5.2 4.62 80
3500 28.0 24.3 6.7 4.18 82
4000 30.6 26.6 7.8 3.92 87
4500 38.1 33.1 10.4 3.68 87
5000 47.7 41.4 15.7 3.04 88
5500 51.1 44.4 19.6 2.60 87
6000 57.0 49.6 28.1 2.03 91


Roy

RPM Knots Liters
1500 6 6.056659
2000 8.1 9.842071
2500 16.1 15.89873
3000 20.9 19.68414
3500 24.3 25.36226
4000 26.6 29.52621
4500 33.1 39.36828
5000 41.4 59.43097
5500 44.4 74.19407
6000 49.6 106.3701

that is I think the converted data
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Old 15 December 2004, 12:42   #17
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Thanks ! Next lesson : make a extra column and fill in the numbers for for the 250 E-tec :-)
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Old 16 December 2004, 04:42   #18
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Quote:
Originally Posted by RibRoy
Thanks ! Next lesson : make a extra column and fill in the numbers for for the 250 E-tec :-)
That will take some more time. I ordered mine but it wil take 7 weeks before my rib is ready.

I took the E-Tec 250 but maybe i should have taken the 225 HO.
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Old 16 December 2004, 10:31   #19
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What is really the difference between 250 and 225 HO ?
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Old 16 December 2004, 16:49   #20
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HO verses Standard Engine

HO 225 engine has a smaller gearbox with a lower water pickup, the engine
can run higher up the transom.
The computer also the engine to produce more power.
will give you 4 to 5 mph on boats with fast hulls 60/65+.

I ran the 250etec on the ballastic 7.8mt in spain last month gps 61mph
18 usa galls wot taken of their fuel flow gauge 6 people + 250 lts fuel.
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