Best 20 mono

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RaceMechaniX

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I throw out one more option, the Delta Force 33. This is a very slippery 21 mono that has proven itself in FE racing. I built one recently for 21 mono and was reasonably impressed with how it runs in a small pond. Truth will come in the upcoming NAMBA winter Nats in Huntsville.
 

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john v

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Oct 10, 2007
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maybe a bit of manufacture loyalty but i love my seaducer, i run against microbursts and other hulls that run well but a ducer i will always have
 

don donikowski

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Aug 22, 2020
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I have an old Twincraft-1992 with black P5 that held A mono record of 87.82 seconds-Namba dist. 19. Ran 52.7 mph straight line in circle trim. Timed by trap-not radar gun. All in 1992. Great boat, and I'm updating it with radio etc. The new motors have a bit more power. But as you all know, setup & prop is the key.
I'v e had the boat on shelf covered since 1993...when new wife distracted me. Now after 28 years, I'm not distracted much and my kids have grown up.
Next is same vintage X Hydro-Pinkert Daytona. But that's another story!. Had 58.59 second record same year and place. Another great boat
 

shoboat

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Jun 23, 2002
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Don,

You may want to try some new 21-Mono propeller designs from
ABC Propeller in Columbus, Ohio. I would suggest the 1614/3 in
either the cleaver or chopper blade designs first. If you have the
power the next step up would be the 1615/3-20*-65% chopper
or the newest 1615/3-23*-47% cleaver.

Enjoy Testing,

Mark Sholund
 

Jeff Barnes

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Hello Mark the weather looks like it going to warm up this week hoping that the pond in Saginaw thaws out looking forward to trying the 1615 / 3 blades you prepare for me I'll let you know how they work in the seaducer and the speedmaster Jeff
 

don donikowski

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Aug 22, 2020
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Don,

You may want to try some new 21-Mono propeller designs from
ABC Propeller in Columbus, Ohio. I would suggest the 1614/3 in
either the cleaver or chopper blade designs first. If you have the
power the next step up would be the 1615/3-20*-65% chopper
or the newest 1615/3-23*-47% cleaver.

Enjoy Testing,

Mark Sholund
Thanks for suggestion Mark. I should be happily back in water pretty soon and will see if it runs as well as in past.
Then, I'll work on more speed.
Don
 

don donikowski

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Aug 22, 2020
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Don,

You may want to try some new 21-Mono propeller designs from
ABC Propeller in Columbus, Ohio. I would suggest the 1614/3 in
either the cleaver or chopper blade designs first. If you have the
power the next step up would be the 1615/3-20*-65% chopper
or the newest 1615/3-23*-47% cleaver.

Enjoy Testing,

Mark Sholund
Hi Mark, the prop I usually ran is a 47 x 63 ABC pitched and cupped. Any idea how this compares to the props you are recommending?
Surface drive near transom. Straight angle. I've used a Prather 225 on occasion, but it is slower and for rough water/wind.
Don
 

shoboat

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Jun 23, 2002
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Don,

Your 47mm X 63 mm of pitch = 2.48” of average pitch with a 1.35 pitch ratio
1614/3 = 2.24” of average pitch with a 1.4 pitch ratio
1615/3 = 2.40” of average pitch with a 1.5 pitch ratio
You must of reduced the diameter of the 47 X 63 or ran
a pretty high strut depth? A 47 mm diameter propeller on
a non-gear driven mono is an interesting choice. Today, I think
a three bladed propeller will run more stable on the water with
better acceleration on a 21-Mono. Just my opinion that is all.

Thanks For Reading,

Mark Sholund
 

don donikowski

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Aug 22, 2020
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Don,

Your 47mm X 63 mm of pitch = 2.48” of average pitch with a 1.35 pitch ratio
1614/3 = 2.24” of average pitch with a 1.4 pitch ratio
1615/3 = 2.40” of average pitch with a 1.5 pitch ratio
You must of reduced the diameter of the 47 X 63 or ran
a pretty high strut depth? A 47 mm diameter propeller on
a non-gear driven mono is an interesting choice. Today, I think
a three bladed propeller will run more stable on the water with
better acceleration on a 21-Mono. Just my opinion that is all.

Thanks For Reading,

Mark Sholund
Minor typo on my part...prop is 2"d 47 x 63. Strut is about 1,25 wide. shaft is close to bottom. It has not been cut down so it must be mismarked.
Still have to get in water. Update in a month!. I do know 3 blade props run smoother and keep boat from leaping around.
Thanx again, Don
 
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LohringMiller

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Jan 25, 2017
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For the last 5 NAMBA Nationals at least two of the first three hulls were Seducers.

Lohring Miller
 

don donikowski

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Aug 22, 2020
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For the last 5 NAMBA Nationals at least two of the first three hulls were Seducers.

Lohring Miller
That speaks well for the design(er). I don't recall if they were available when I started with my Twincraft (around 1990).
At the time I watched a TC run all over the class and I figured I could make it better. So I did. Didn't notice anything after
I got divorced and met new wife to be in 1992.
Talk about brain fade.
DD
 

don donikowski

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Aug 22, 2020
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I'll be running the p5 as it was. Some pretty good mods that I did back then. The whole effort is to be sure it is as good as it was then try to go faster.
I don't know if you ever saw it run David but it was pretty awesome at the time. Then... I'll sell it.
I want it to be awesome now not "used to be".
Don
 

Grimracer

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Dec 27, 2001
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8,216
This is a good post.. good subject.

To me its more than a "competitive hull"..

Where do you get one?.. how much?.. do they have any in stock? if not, how long before I can get one?

SEADUCER EVERY TIME. Jerry has done and continues to do a great job bringing boats to market.. making sure ANYBODY can get one and AT ANY TIME.

Reputation regarding Seaducer is more then winning...

Grim
 

LohringMiller

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Jan 25, 2017
Messages
600
When Jerry is driving the hull is extremely hard to beat. My first experience with Seducer was watching Jerry assemble a new hull from scratch at the 2000 NAMBA Nationals. I doubted that an untested boat would do well. I was obviously wrong since he swept the series.

Lohring Miller
 

Buckshot

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Dec 22, 2003
Messages
3,702
A Seaducer w/stok CMB won US-1 at the 2019 IMPBA Internet’s, runner up at the 2018 NAMBA Nats in Dallas (to another Seaducer/CMB boat) and back to back wins at the 2019 & 2021 NAMBA Winter Nitro Championships. I’d say that’s a pretty good boat motor combo.
 

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