Twin outboard center console build

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  • ScarabChris
    replied
    Some new pics.

    Laying out the deck and liner with 1/8" white acrylic

    Deck and liner is all together


    Building the console...


    Console in the boat. It still needs finish work.


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  • ScarabChris
    replied
    Hey how did that boat run? I was considering doing a bigger hull but I wanted more of a scale look? Post more pictures of that rig if you have them. What do you mean when you say "BL" and "Neu 1527"?

    Also a question about CG on a boat like this. With so much weight on the back my CG is nowhere near that "30% of the hull from the transom" even with all the batteries way up front. Thats why I extended the ESC wires so I could put them up front. No worries I soldered everything and used a good marine grade wire.

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  • Make-a-Wake
    replied
    Holy crap................those motor wires are like 6 feet long!

    They may generate a good bit of heat...........

    Looks nice, and i think the nimhs are a good choice.

    Here's my old setup on my 45" Dumas...........brushless motors. Wanted a more sound BL setup so i went with a single Neu 1527.
    Attached Files

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  • ScarabChris
    replied
    Originally posted by RandyatBBY View Post
    I will mostly need the height and how wide all the dimensions to make it, good pictures will help a lot, lots of angles.

    I thought you were complaining about the speed being too fast. Yes it will slow down the top speed. Electrics like to be full out it is easyer on the ESC. to go slow there is a answer I am not your guy on that.
    I'm going to make some drawings this weekend for the arch. I can email it to you. Maybe you can do a leaning post too? That will be much simpler than the arch, basically just 4 legs.

    Let me know how you want to do it, and I'll certainly pay you for your time, expertise and material.

    Leave a comment:


  • ScarabChris
    replied
    Few new pictures. Did a few trial runs and blew a lower unit (gears) already. At least it doesn't cost $3 grand like it does on a real boat. I had a new in the box motor so I just swapped it out. I'm pretty sure it was my fault, the canal behind my house has a lot of crap floating in it and I think something jammed the prop.

    OK so here are the pictures. Everything is dry fit. I'll be using 7 cell 8.4 volt NiMh batteries instead of these 11.1 volt LiPos. I think they are to powerfull for these motors.

    I had to move the motors down a lot which required some creative "custom" work on the mounting brackets. But I think I got it! This boat runs very nice. Once I get the trim tabs on it should run even better.



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  • ScarabChris
    replied
    OK I guess I'll get some NmHi packs from Steve. They are probably a little heavier which will help anyway.

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  • Make-a-Wake
    replied
    If you run it half throttle most of the time, the ESC will get very hot............you're gonna get heat either way unless you go with 2 cell lipo's or 6-7 cell nimh.

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  • ScarabChris
    replied
    LOL.....but I do like how fast it is.

    You guys think these LiPos will burn the motors up even if I am not at full throttle?

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  • Make-a-Wake
    replied
    Originally posted by eboat View Post
    If you are using the 11.1 volt lipos (3S) try dropping down to a 7.4 (2S) and you will go slower and closer to the scale speed you are looking for
    I agree, the stock 550's are made to run on 6 or 7 cell nimh's............your 3s lipos will be packin' 12.6v off the charger.

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  • eboat
    replied
    Originally posted by ScarabChris View Post
    Yes I would totally like you to build me an arch!! Look at the picture of my real Scarab above. Thats what I want it to look like. It doesn't have to be identical but the same idea.

    Once I get to the cosmetic stage I'll get you a some drawings and dimensions.

    "Drop the voltage" Do you mean using batteries with a lower voltage rating? Wouldn't that also lower the top speed?

    Forgive me, put a gas engine in front of me and I'll tell you how to squeeze every last drop of power out of it. I'm new to this electric thing.
    If you are using the 11.1 volt lipos (3S) try dropping down to a 7.4 (2S) and you will go slower and closer to the scale speed you are looking for

    Leave a comment:


  • koontek
    replied
    can't wait to see your test run pictures!

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  • RandyatBBY
    replied
    Originally posted by ScarabChris View Post
    Yes I would totally like you to build me an arch!! Look at the picture of my real Scarab above. Thats what I want it to look like. It doesn't have to be identical but the same idea.

    Once I get to the cosmetic stage I'll get you a some drawings and dimensions.

    "Drop the voltage" Do you mean using batteries with a lower voltage rating? Wouldn't that also lower the top speed?

    Forgive me, put a gas engine in front of me and I'll tell you how to squeeze every last drop of power out of it. I'm new to this electric thing.
    I will mostly need the height and how wide all the dimensions to make it, good pictures will help a lot, lots of angles.

    I thought you were complaining about the speed being too fast. Yes it will slow down the top speed. Electrics like to be full out it is easyer on the ESC. to go slow there is a answer I am not your guy on that.

    Leave a comment:


  • ScarabChris
    replied
    Originally posted by RandyatBBY View Post
    Drop your voltage and it will go slower or smaller props. allso you might want to stack several packs in parallel for more run time. Just a thought.

    I could help you on the radar arch, I am a 30 year master Jeweler retired and build buggies for Rock crawlers. I would need some plans/drawings though.
    Yes I would totally like you to build me an arch!! Look at the picture of my real Scarab above. Thats what I want it to look like. It doesn't have to be identical but the same idea.

    Once I get to the cosmetic stage I'll get you a some drawings and dimensions.

    "Drop the voltage" Do you mean using batteries with a lower voltage rating? Wouldn't that also lower the top speed?

    Forgive me, put a gas engine in front of me and I'll tell you how to squeeze every last drop of power out of it. I'm new to this electric thing.

    Leave a comment:


  • RandyatBBY
    replied
    Drop your voltage and it will go slower or smaller props. allso you might want to stack several packs in parallel for more run time. Just a thought.

    I could help you on the radar arch, I am a 30 year master Jeweler retired and build buggies for Rock crawlers. I would need some plans/drawings though.

    Leave a comment:


  • ScarabChris
    replied
    Oh yeah, the ESCs.

    They work great but is there no slow/idle speed? It goes from fast to faster to very fast to stupid fast. I was hoping to have a nice idle speed.

    Leave a comment:

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