Seeking advice on setup for a 45" mono

[UpsideDown]

I have an AC S45 that's Id like to convert to electric and race it too. The class I want to race it is limited to 4S, 650g battery pack max. So pretty much 5000mah is my ceiling. A standard race on the oval is approximately 80-90 seconds, 5 laps in total......To be competitive I need to be sitting in the 55-60mph. Am I dreaming? If I'm not, what motor/prop/ESC combo would you suggest?

Dreaming. As stated the hull is way too large for 4S. Speed will be low and runtime short. Boats under 85 cm are the ticket for 4S. The AC45 runs best on 8S to 10S.


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[NativePaul]

I think you are dreaming, 45" is way too big a boat to be competitive on 650g of battery, I would be looking at about three times that weight for a boat that size.

Do you have a mill start or a drag start in Nz? If 650g is your limited only way I can see you being competitive is with a much smaller boat in the low 30 inch range, and in calm weather you may be able to get out in front and stay there, but you will likeliest up on your back if you have to do any actual racing, due to the holes the bigger boats carve in the water.

[srislash]

Geez one of Andy’s boats made it down to NZ? Do you have a link to this race class’ rules? Is it all FE? Or like Paul referred, against gas boats.
BTW, the S-45 is a great boat. I have a Razor 45 which I am doing FE.

Shawn

[meangenesracing]

Geez one of Andy’s boats made it down to NZ? Do you have a link to this race class’ rules? Is it all FE? Or like Paul referred, against gas boats.
BTW, the S-45 is a great boat. I have a Razor 45 which I am doing FE.

Shawn

Shawn, you doing another twin mono? I just got a slayer 45 one of Andy's last boats he made. Got me a lehner 6080 and MGM 40063 coming. Please keep us posted on your build. I need to decide on a prop to start with

[srislash]

Shawn, you doing another twin mono? I just got a slayer 45 one of Andy's last boats he made. Got me a lehner 6080 and MGM 40063 coming. Please keep us posted on your build. I need to decide on a prop to start with

Yeah I was going thru his back shed and acquired a few things. I think the 2028 in this one. Just a solid strong runner. I have a 3060 LMT as well.

[meangenesracing]

Yeah I was going thru his back shed and acquired a few things. I think the 2028 in this one. Just a solid strong runner. I have a 3060 LMT as well.

Ha Ha, I have a 2028 as well put it in the R42 gave up on twins. lol

[meangenesracing]

Typo on the lehner it's a 3080. Not 6080. Lol

[srislash]

Typo on the lehner it's a 3080. Not 6080. Lol

I knew that, lol

[UpsideDown]

Thanks all for your replies. Great eye opener!

I might look at a delta force 33", is that a good hull? I run the 53" and love it

[Peter A]

Geez one of Andy’s boats made it down to NZ? Do you have a link to this race class’ rules? Is it all FE? Or like Paul referred, against gas boats.
BTW, the S-45 is a great boat. I have a Razor 45 which I am doing FE.

Shawn

There are quite a few of them here Shawn. I think someone made a mould and produced a few. It happens here because it is so costly to get hulls.

Upsidedown, where are you in NZ? The DF33 would be a great start, but where do you get 650g for batts in NZ? that sounds like the Aussie rule for their EA class. Here it is either 5000 or 10000 mah depending on who you run with or what club/organisation.
BTW I have a Pursuit, Whip 20 and Dumas Scarab 30" for sale, message me if you are interested. I am in Tauranga.

[Peter A]

Peter, I'm from NZ but spend most of my time in Oz. I'm looking at the DF33 or the OSE raider, I need to do more research

OK. Maybe Paul (785boats) can chime in and lend some good advice. Any 4s set up for OZ is ok to run back home. We probably should be more in sych, but you know how it is, under arm bowl, Phar Lap, pavlova....Lol!

[785boats]

UpsideDown.
Hi there.
Where in Oz are you based? I'm in Brisbane.

The DF Cyberstorm is a popular boat at our club in the EA class. As is the Pursuit. I've built & raced them both. I also have my Maverick, which is the same hull that OSE sells as the Raider.
All three are competitive.
A good solid setup is a TP 4050 2200kv motor with a Seaking/Turnigy 180A ESC.

As for the 650g limit on lipos. I race with HRB 6000mah packs. But Entropy & Gens Ace 5800mah packs also come in under the limit. There are others too.

Here's our race club if you are in the Brisbane area.

https://www.facebook.com/prmpbc/

[Nevs]

6000 mAh and 90 sec. means that you boat is allowed to consume 240 A average = 3600 watt or close to 5 hp.., (but it might kill your lipo). Its possible to use that energy in a 45" boat. But probably in a 32" ?

[Nevs]

(45") TP 5650 4D/2458 kv = 36400 rpm at 14,8V.. Thats about 400A peaks with a 55 mm prop = real 100c lipo, AWG 8, 8mm connectors.

[Nevs]

650g limit. You may be able to find something 8-10.000 mah.

https://www.gensace.de/gens-ace-8500mah-7-6v-high-voltage120c-2s1p-series-with-black-hardcase-lipo10.html