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Old Jul 29, 2011, 01:55 PM
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Build Log
29' Beals Island Lobster Boat (Scale 1/10)

First of all I have to thank jjac who made the plans (Plan Thread). Thank you so much!

Because of my poor vocabulary i won't write so much and won't explain every singele step.

This is my second scratchbuild and my first build log, please be patient with me.

The first images show the hull with 6.5mm thick frames planked with 10*2mm balsawood planks.

Sanded and then glassed one time inside and two times outside with epoxyd and 100g/mē fiberglass.

The motor mount (not on the images) and the shaft is from Gundert Modellbau.

I shot the images in April, now the progress is a little further and I'll add more images soon. I'm not a fast builder.



Best regards

Chris


---------------------------------------------------------
Visit my Gallery for high resolution images.
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Old Jul 29, 2011, 04:05 PM
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looks good. keep the updates comming
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Old Jul 29, 2011, 04:53 PM
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Great job! I am trying to finish mine today.... It's been a while.
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Old Jul 29, 2011, 07:21 PM
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Chris,

Here's my build log from Jimmy's plans. It started off as a lobster boat but ended up as a Royal Lowell 32' Sport Cruiser.


http://www.rcgroups.com/forums/showthread.php?t=1113173


Jimmy,

I've been waiting a year to see your boat! Looks like your plans are building boats of various sizes.

Ed
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Old Jul 29, 2011, 08:15 PM
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It has been awhile! I bought a new house a year ago and my build stopped then. I had to get my new garage in order and it has taken time and money. The latter I am short of. My job has gone to crap. I took a 10% pay cut, went from 5 days to 4 days a week so that's another 10% and my health insurance went up $20 a week. It all adds up!
My boat is not as nice as yours Ed, it's a little more rustic! I should be done tomorrow. I will try to get some pics up.

Chris lets see a few more pictures!
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Old Jul 30, 2011, 09:53 AM
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Ed,

of course I read you build log..... it is a really beautiful boat.... awesome.....

Have you allready run it? Would love to see some pics or a video.


jjac,

can't wait to see your finished boat...
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Old Jul 30, 2011, 10:07 AM
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Now this is the stand of today.

Because I want a "clean" and a low floor, I put the motor as far as it need to the front.

The batteries will take place where normally the motor of the original is.

So I thought about the center of gravity and decided to put the servo in the back.

It will be later covered with a fuel tank dummy. I'm thinking that I even have
to add more weight in the back for a smooth run.

I used this "mecanical thing" with a o-ring you can see on one of the images to get the rudder waterproof. EDIT: I think I found the right word: cable gland

I'm not really happy with the rudder I made myself, but it will work for a testdrive. Have to build a new one which goes more with the curves of the hull.

The last image shows the colours I will use.

If you have any question please feel free to ask me. I will try to answer them.
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Old Jul 30, 2011, 10:54 AM
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Looking good! I really like your shaft selection, looks very sturdy. The colors you picked out look great.
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Old Jul 31, 2011, 07:52 AM
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Chris,

I like the way you go about building. No shortcuts. Everything well thought out.
And look at that heavy duty rudder push rod!

Haven't launched mine yet. Never got around to installing my sunken ship marker buoy.

Jimmy, where are those pics ?


Ed
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Old Aug 07, 2011, 07:27 AM
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I mount the strings at the hull. Couldn't find the right word for those strings.

Then I installed the following rc components

Motor: Graupner Ultra 930-7
ESC: Schulze slim 40-be
Reciver: Jeti Duplex R6
Servo: Hitec HS-77BB
Batteries: 10 cells NiMH
Telemetry: Jeti MUI 75


The ESC can only forward and will be replaced with a FWD/RWD. Also the batteries will be replaced against a 3S Lipo. But the existing components are good enough for a testdrive.
The Jeti MUI 75 shows me the voltage and the current in time at the Jeti Mini Box. The Jeti Mini Box is the little box with the led display you see mounted on the transmitter lying in the gras.

I had to add four srews which weights together 840g.

I tried out two props. First was a Raboesch three blades brass prop with 40mm diameter. Second was a Graupner P two blades prop with 35mm diameter.

With the first prop I reached a good speed by about 15 Ampere and 60% throttle. At full throttle I got 30 Ampere but the boat didn't go much faster because it „sucks some air thru the prop“. Sorry guys, I don't know how I can explain it in english.

With the second prop it goes much better, at full throttle I got 25 Ampere and no air thru the prop.

I am really impressed by the way it drives. That will be a great boat.
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Old Aug 07, 2011, 07:30 AM
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The video shows it driving with the first prop and about 8-10 Ampere.

RC Lobster Boat - Test Drive (0 min 59 sec)
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Old Aug 07, 2011, 07:40 AM
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She is looking great!
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Old Aug 07, 2011, 09:48 AM
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Here's a video of mine.

RC Lobster Boat (1 min 24 sec)
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Old Aug 07, 2011, 11:06 AM
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jjac,

you build a beautiful boat, I like to see how it cutting the waves. Also saw in your other videos you installed light. Looks great. Congrats.
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Old Aug 07, 2011, 03:24 PM
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An excellent job, Jimmy.

We all owe you many thanks for providing us with the plans.

Ed
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