PG25 or GS28
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Re: PG25 or GS28
I think the Abaco 23 with 150 hp could also work. It is a little beamier, but might be more comfortable fishing from than the Panga. Not sure if you can extend here 2', but it would be a lot of boat at 23' and very comfy fishing and sea running.
Re: PG25 or GS28
Thank you - yes it’s a nice boat - but here where we are that is a lot of horsepower.... the most common engine here is the Yamaha 40 which we can run on kerosene as well.fallguy1000 wrote: ↑Fri Dec 25, 2020 8:50 am I think the Abaco 23 with 150 hp could also work. It is a little beamier, but might be more comfortable fishing from than the Panga. Not sure if you can extend here 2', but it would be a lot of boat at 23' and very comfy fishing and sea running.
Part of the appeal of the Panga 25 is that twin 40s would meet the power requirements I believe?
Re: PG25 or GS28
I ran the Pangs through one of my calculators, used a Yamaha 115HP motor and 2650lbs displacement, and came up with a low to mid-20's mph at 1/2 to 2/3 throttle. It really depends on how the boat is loaded. Thus the range. Jacques gives a load range of 2650-3400lbs in the SP's. I forgot top speed would be in the mid-30's, you could go with a 90hp which would lower your top speed, low 30's, some but not other wise affect the boat.
Hope this helps.
Tom
Restored Mirror Dinghy, Bought OD18 built by CL, Westlawn School of Yacht Design courses. LT US Navy 1970-1978
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Re: PG25 or GS28
The only reason to run doubles is for redundancy. This means separate start batteries, separate fuel tanks. Steering can be linked.Johnston wrote: ↑Fri Dec 25, 2020 5:42 pmThank you - yes it’s a nice boat - but here where we are that is a lot of horsepower.... the most common engine here is the Yamaha 40 which we can run on kerosene as well.fallguy1000 wrote: ↑Fri Dec 25, 2020 8:50 am I think the Abaco 23 with 150 hp could also work. It is a little beamier, but might be more comfortable fishing from than the Panga. Not sure if you can extend here 2', but it would be a lot of boat at 23' and very comfy fishing and sea running.
Part of the appeal of the Panga 25 is that twin 40s would meet the power requirements I believe?
But the double does nothing if the support systems are not separate. A battery dies and you are out. A fuel tank runs out and you are stuck. A backup tank and a backup battery make the 2nd engines worth it.
Otherwise, go with a single F70 Yamaha
Re: PG25 or GS28
Here where we are you can pull start the 40 Hp, so battery redundancy not such a big deal. We always run a simple portable gas tank to each engine so that is also not an issue. Whilst I agree that the 4 Strokes are lovely engines, I think I would prefer the simplicity of having the same engines that are locally common and easy to maintain and find parts for.fallguy1000 wrote: ↑Fri Dec 25, 2020 7:12 pm
The only reason to run doubles is for redundancy. This means separate start batteries, separate fuel tanks. Steering can be linked.
But the double does nothing if the support systems are not separate. A battery dies and you are out. A fuel tank runs out and you are stuck. A backup tank and a backup battery make the 2nd engines worth it.
Otherwise, go with a single F70 Yamaha
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Re: PG25 or GS28
Given your constraints power wise I think I would build a stock PG-25. If things like nidaplast are available I would use them and try to keep the boat as light as I could. Resist the urge to add lots of extra features and keep it light and simple. Sometimes light and simple make the best and most used craft.
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Re: PG25 or GS28
Remember, when scaling, you're only scaling the length...not the beam. So the panga would be longer, but still uber narrow...but that may be ok with you.
With your HP constraints, I would stick with the stock PG25. A mix of plywood hull & solid honeycomb floor would make for a decently light package.
With your HP constraints, I would stick with the stock PG25. A mix of plywood hull & solid honeycomb floor would make for a decently light package.
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Re: PG25 or GS28
Why wouldn’t you scale the beam? Jacques always suggests that you would scale all dimensions. That would include beam, freeboard, etc.
Re: PG25 or GS28
First I would not scale the PG25 it needs to have every dimension scaled due to its shape. Okay after running twin 40's or 80 HP through my calculator you would have a top speed of high 20's, low 30's. Cruise will depend on the prop you get, the load you have, etc, it should be about 1/2 throttle or a little less. Once you get on the water you will know, every boat is different.
Good luck
Tom
Good luck
Tom
Restored Mirror Dinghy, Bought OD18 built by CL, Westlawn School of Yacht Design courses. LT US Navy 1970-1978
Re: PG25 or GS28
Thank you everyone for your amazingly informative responses.
The build time of the Panga seems very fast in the study plans - is it significantly faster than some of the other boats and is this because only 2 stringers?
Working 9-5 could 2 people complete a basic Panga 25 in a month?
The build time of the Panga seems very fast in the study plans - is it significantly faster than some of the other boats and is this because only 2 stringers?
Working 9-5 could 2 people complete a basic Panga 25 in a month?
This is good news Tom. Does your calculator say what speed it would do with a single 40? Or one trimmed up?TomW1 wrote: ↑Wed Dec 30, 2020 12:29 am First I would not scale the PG25 it needs to have every dimension scaled due to its shape. Okay after running twin 40's or 80 HP through my calculator you would have a top speed of high 20's, low 30's. Cruise will depend on the prop you get, the load you have, etc, it should be about 1/2 throttle or a little less. Once you get on the water you will know, every boat is different.
Good luck
Tom
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