Which Neu for 2cell stepped mono ?

[Gerwin Brommer]

Hi guys !

As the topic says : what do I need for my stepped mono ?
It's a Gozilla from Hopf, Germany.
We don't do ovals, so I'm a sportboater.
cells/esc. are no restriction, so the motor must be a hot one

Thanks, Gerwin Brommer

[Chris Harris]

1509 1.5/D 4500Kv
1512 1/D 4875Kv
1515 .5/Y 4400Kv

Take your pick!

Chris

[sailr]

1515/.5Y is best choice for most power.

[NativePaul]

A guy in my club runs a 1115/1.5d in a Lindenau for Mono1 on 3s2p A123 with a graupner 34mm prop. A 1115/1d 5200kv with a 35mm prop on 2s LiPo should give a fair increase in RPM and speed over a mono1 setup without making the Gozilla too heavy or torque roll too much.

A 1515/.5Y may have the most power but with a KV of only 4400 if you fitted a prop that would pull enough amps to justify using a 12oz/340g motor you would end up spinning a Gozilla instead of the prop.

Chris What sort of props do you spin on the 1509/1.5d? I have one of these hoping it will make a decent motor for my almost finished Hydro1 on 2s, X637?

[sailr]

Sorry, I should have picked up on the STEPPED mono that you are not in the U.S. Stepped hulls are not legal here except in Offshore class.

I guess we need to identify if we are in the U.S. or not. Rules/classes/weights/ etc. are totally different. We in the U.S. don't go by weight at all, only the number of cells or volts. The NAVIGA rules are a total mystery to us over here.

[Gerwin Brommer]

2S and about 4500 rpm/V is for old men. (just kidding)
That's what used to be common over here in 7cell Nimh racing (beginning of the BL scene), years ago.
Paul : I like your idea, you must have some European blood in your vains, LOL

[NativePaul]

True Gerwin, I'd rather a smaller 5000-5500kv motor for hydro1 spinning a smaller prop but I don't have unlimited funds so its a dual purpose motor for me and will occasionally swap between 2 models.

I have a little European blood in me, part of my family came over here (to England) from Normandy in 1066.

[raptor347]

Gerwin,
For that size boat on 2S, I'd go either 1115/.5y or 1506 /1y depending on what conveniently fits in the hull. I used these for 8 NiMH hydro motors before Lipo.

OK, so I'm an old man (40 is officially old if you ask the kids). My 1515/.5y (4500kV) powered 2S hydro comes out of the corners at 67mph and enters in the mid 70's. It was designed for a different game. Fun to drive!

[Gerwin Brommer]

Thanks Brian !

My hull is not designed for speeds above 50 or 60 miles/hour.
It's a narrow hull with a fairly large step.
Great for speed on a straight line, cornering is "minor" haha
Looking at the sizes ( I always have to look twice, these US-sizes confuse me haha) the 1115 size is great.