Prop Sizes
11-04-2004 | 07:59 PM
#1
Prop Sizes
I wanted to find out the prop sizes you guys would recommend with the following engines .15, .25, .29, .35 and .40. Do airboats have any different prop requirements than planes...in other words should I just go with the airplane prop that would go with that size engine if it were going in a plane?
11-04-2004 | 09:12 PM
#2
RE: Prop Sizes
Just go by the manufactures size chart for the engine. The fact that it is in a boat or a plane should not make any difference. You will probably have to experiment with the sizes to get the boat tweaked the way you want. Just remember, do NOT use wooden props. They will seriously come apart if they get wet.
Best regards,
Pete
Best regards,
Pete
11-05-2004 | 02:52 PM
#3
RE: Prop Sizes
Problem is I don't have any of the manyfacturer's charts since the engines I mentioned are all older Enya's (with the exception of the .25 which is a newer O.S.). Anyways, I guess the most important question I was getting at is if there are size/pitch differences between the recommended airboat and plane props with the same sized engine that I should watch for. But I see it doen't matter...so I should have any problems trying to find the plane prop size guidelines for my engines.
Thanks
Thanks
11-05-2004 | 08:30 PM
#4
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From: Oelwein, IA
RE: Prop Sizes
5.25x4, 5.5x4, 6x3.5, 6x4, 7x3
6x3
.049
7x3,7x4.5,7x5
7x4
.09
8x5,8x6,9x4
8x4
.15
8x5,8x6,9x5
9x4
.19 - .25
9x7,9.5x6,10x5
9x6
.20 - .30
9x7,10x5,11x4
10x6
.35 - .36
9x8, 11x5
10x6
.40
10x6,11x5,11x6,12x4
10x7
.45
10x8,11x7,12x4,12x5
11x6
.50
11x7.5, 11x7.75, 11x8,12x6
11x7
.60 - .61
11x8,12x8,13x6,14x4
12x6
.70
12x8,14x4,14x5
13x6
.78 - .80
13x8,15x6,16x5
14x6
.90 - .91
15x8,18x5
16x6
1.08
16x10,18x5,18x6
16x8
1.20
18x8,20x6
18x6
1.50
18x10,20x6,20x8,22x6
18x8
1.80
18x10,20x6,20x10,22x6
20x8
2.00
[8D]
6x3
.049
7x3,7x4.5,7x5
7x4
.09
8x5,8x6,9x4
8x4
.15
8x5,8x6,9x5
9x4
.19 - .25
9x7,9.5x6,10x5
9x6
.20 - .30
9x7,10x5,11x4
10x6
.35 - .36
9x8, 11x5
10x6
.40
10x6,11x5,11x6,12x4
10x7
.45
10x8,11x7,12x4,12x5
11x6
.50
11x7.5, 11x7.75, 11x8,12x6
11x7
.60 - .61
11x8,12x8,13x6,14x4
12x6
.70
12x8,14x4,14x5
13x6
.78 - .80
13x8,15x6,16x5
14x6
.90 - .91
15x8,18x5
16x6
1.08
16x10,18x5,18x6
16x8
1.20
18x8,20x6
18x6
1.50
18x10,20x6,20x8,22x6
18x8
1.80
18x10,20x6,20x10,22x6
20x8
2.00
[8D]
11-05-2004 | 11:45 PM
#5
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From: Okeechobee, FL
RE: Prop Sizes
The manufacturer's recommendations is a good starting point.
But depending on the weight of the boat and how you want the boat to run and react....you'll want to play with different props to get the one that best fits the boat. On my 46's I generally run an 11-7 or 11-8 on water but when running dry I like to run an 11-6.
Get a good starting point and experiment. Each boat set up may require different proppings.
But depending on the weight of the boat and how you want the boat to run and react....you'll want to play with different props to get the one that best fits the boat. On my 46's I generally run an 11-7 or 11-8 on water but when running dry I like to run an 11-6.
Get a good starting point and experiment. Each boat set up may require different proppings.
