Darin's New N1-Mono Project - WildThing 22, Rev. 002

[befu]

Yup... 22" WildThing Mono. This hull design was created by John Finch a LONG time ago. It's a good solid design.

Would be interested to see what hulls you have molds for.
This hull, with the deck and hatch installed, prior to assembly, weighed around 6oz., but is as rigid as they get.

Good to finally learn the history behind the design. When I said "my mono's" I meant the ones I built, not that it was an original design by me or George, that is just who I knew that had a balsa one built and I built a plug copying it.

Us vetrans like to hear about history and so do a few rooks.
What were the names of these hullls? A 22 inch hull would be superb

Umm, no names. I probably built 2 or 3 of the 22" really light ones, and about a dozen or so of the 24" ones. Heck, that was before Ebay, sold them walking around the hobby shows just carrying one or two. I know Jason sold a few for me also. Just a side hobby man, nothing serious.

the 24" boat is 7 3/8" wide, has a 16 degree vee at the transom and only has the chines molded in, the rest is flat. I then took a 24" hull and made a new plug by cutting the freeboard down by a half an inch, and then moving the transom forward till it was 22" long with the same deck.

This is the same boat that is in my build thread that Darin replied to asking about were to put strakes. It is a fun little boat and runs well on lower power. When I made these molds, I was into running gas boats and did this on a whim, never really did anything with it and never thought it would take me 18 years to actually get one setup and running! i am just a sport runner with my younger boys now, all for fun. Just laid up a couple of epoxy boats, the rest were all polyester based. These are NOT light, gelcoat surface, three layers of 4oz to 6oz glass and a piece of carbon in the bottom. Simple and quick, weighs in at 13 oz I think without hatch. The hatch I want to mod one of my crackerbox plugs so it looks more like a jet boat, kinda like Bill's! (OK, in a fuzzy vision at a great distance sort of way....)

So, what kind of power can you get out of a roar brushless setup now? I have enjoyed reading about this build in this thread, and congratulations on the results!

Brian

[BILL OXIDEAN]

REALLy nice hulls! Ge one down to say 7 or 8 oz and it would definitely make for a contender..

Here's an N-1 vid my daughter shot of me the other day.
I was slowing down a great deal in the corners it was her birthday and I didn't want to flip the boat

N-1 is fast nowadays darin and I have both been fascinated by it lately...

http://www.youtube.com/watch?v=agP0IqZMaGc

[Darin Jordan]

Brian... I have to tell you that I just LOVE the look of this boat here....

I would be interested to see the 22" and the 24" side by side, just to get an idea of the overall dimensional difference between them...

For N1, 22" would typically be at the upper length limit of what I'd consider, but we are going a bit faster these days, so it might be that the 24" would make a more stable race platform.

Either way, the one in this picture just looks bitchen and would look really cool racing across the water.

[befu]

Thank you, glad you like the way it looks. Let me get a couple of photos of it with a 36mm motor in it.

Looking at your oval record, couple of questions. It took you basically 50 seconds to drive two laps, plus your launch time and drive back to shore. I would guess your launch is pretty short, just a run up to full speed and cross the start line then turn into shore when done? So maybe about a minute of full speed driving? 550 MAhrs is only averaging about 33 amps for a minute. You are right about not much power for a record run, am I close on my numbers?

Also, what oval are you running on?

Thank you. Brian

[Darin Jordan]

Thank you, glad you like the way it looks. Let me get a couple of photos of it with a 36mm motor in it.

Looking at your oval record, couple of questions. It took you basically 50 seconds to drive two laps, plus your launch time and drive back to shore. I would guess your launch is pretty short, just a run up to full speed and cross the start line then turn into shore when done? So maybe about a minute of full speed driving? 550 MAhrs is only averaging about 33 amps for a minute. You are right about not much power for a record run, am I close on my numbers?

Also, what oval are you running on?

Thank you. Brian

Brian... it's a 1/6th mile oval... so 2-Laps, 1/3rd mile total for time.

YUP, N1 is a LOW POWER class... You are restricted to current ROAR legal "Stock 05 motors"... So either a 27T brushed or a 17.5T Brushless... on 6 NiMH or 2S Lipos...

Using the same power system, in my Hydro, was good for 38-seconds, and I KNOW there is still more there... We're just starting to figure out these new ROAR "Stock" Brushless setups.

This is why so much attention to detail was paid in my build to keeping things efficient and LIGHT... Every gram counts when you have this little power to work with.

[ron1950]

darin i dont know much about the motor u chose but it looks like a sensored motor and i thought they wouldnt run without a sensored esc..... can u run it that way????

1=11=11......thanks for ignoring my question

[befu]

motor and interior view

here is a picture of the inside. Motor is the 3656 turnigy with an OSE water jacket on it. The 22" version would be the same thing, just 1/2" to 9/16" shorter. I am getting ready to order some more epoxy and light glass for another project, I will see what I can find to do a light version.

The gelcoat ones are heavy, but that is fine if you do not have a limited power supply like N-1 or are not racing. there is nothing light about those. 7-8 onces for a 22" mono can be done. Time to break out the vacuum bagging supplies, I am curios as to what I can do with one now.

I am going to start a section in my albums for the 22" and 24" monos so I am not mucking up your build thread. Now, back on the topic of your build, that ROAR motor is 36mm x 55mm, correct? How much power can you get out of them? They bundle it with a 100 amp esc and it is a large motor, just wondering what the watt capacity is on 2s. Being only 2200kv, I can see why you would want the gear drive. sounds like the bigger prop wasn't the way to go, maybe taller gearing would work for more rpm. Very interesting. Gear drives used to be to gear the motors down to turn a prop, now you are using them as overdrives! How times change.

Brian

[Darin Jordan]

Making some updates!

Moving the motor back to the aft of the hull to give me more room to arrange things and more options on balance. I made a carbon motor mounting platform for the bottom of the hull, and machined down a ProBoat Miss Geico motor mount to bolt to it. I should be able to fit the geardrive back here as well, should I decide to try it again, but for now, I'm going to go a different route and run the motor direct drive. (NOTE: The wooden piece under the front of the motor is just a brace to hold the motor in place while the epoxy on the carbon mount is drying. It doesn't stay)

Also adding strakes to the bottom. Not sure if this is goign to hurt or help. Guess I'll find out. I'm going to try using much smaller strakes, and an extra row of them. Actually a lot more in proportion to the hull and like would be seen on a real boat. I HATE building strakes, so I might as well have to build up two more, right??

As part of the motor relocation, I'll be swapping out the .047" wire for a .098" cable system. Should be a little easier to maintain and deal with.

[befu]

Strakes

Darin, a trick to making strakes. I take a piece of bar aluminum and put it in the mill vise at the angle of the deadrise. I then machine a goove in the bar, which replicates the strakes. Wet sand the form and wax it. fill it with bondo and squish it between another piece of aluminum. Makes a nice flexible sharp edged strake.

I will take pictures later of how I do it and post.

Will send you a pm later on about hull stuff.

Brian

[Darin Jordan]

Will send you a pm later on about hull stuff.

Brian

Please do!

[GeoVW72]

could you post a link to the class rules?

I come from the ROAR car side of r/c and know a few tricks, just not sure they're legal

[Darin Jordan]

could you post a link to the class rules?

I come from the ROAR car side of r/c and know a few tricks, just not sure they're legal

Power rules are pretty simple:

N-1 Any ROAR-approved stock .05 motor as defined by current ROAR
parameters. Power Limits: Up to 7.5 Volts nominal, any
chemistry. Maximum of 2 packs in parallel. Maximum capacity of
10,000 mAh.

Generally speaking, very few people race these any longer. Used to be 27T brushed, but now we're playing with the 17.5T BL. I think, if I read the ROAR rules correctly, the 21.5T is legal as well.

The two hull types that seem to still survive, mostly on a SAW or 2-Lap time trial basis, are N1-Mono and N1-Hydro.

If you have any legal tricks... feel free to PM me with the info!

[GeoVW72]

you have a pm

[RandyatBBY]

Do not tell him anything!!!! He knows too much all ready. I hope you are not telling him about polishing the bushings with simi chrome cleaner.Tell me I will treat you better

[Darin Jordan]

Do not tell him anything!!!! He knows too much all ready. I hope you are not telling him about polishing the bushings with simi chrome cleaner.Tell me I will treat you better

Hahahahahah! Bushings? We don't run no stinking bushings!