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General RC Boat Discussion Discuss RC Boats, submarines & hovercrafts in electric or nitro. |
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12-20-2005, 01:10 PM | #1 |
New to site and RC boating
Hi all,
I just thought I'd drop a line and say hi. I started a few months ago on a newish boat. This is a hull my father built about 45 years ago and ran as an uncontrolled model. It originally had an old Mcoy red head 35 in it (which I still have 3 of). He said you would gas it up and let it go. When it ran out of fuel you would go catch it. I have always wanted to rebuild it as an RC model so as of this summer I finally bought a new radio and as of 3 weeks ago I bought an engine. I'm on an extremely strict budget so I was of forced to go with an airplane engine for power rather than a pricy marine. I will have to use dad's old water jacket set up which apparently worked extremely well. I had to gut everything inside including the original deck and start with a bare hull. I included a pic of what I am starting with. Now all I need to do is find time to work on it. Between the constant renovations on my house and general life I only get about an hour a week on it. Oh well I wasn't going for a quick build anyway. |
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12-20-2005, 01:34 PM | #2 |
RCC Expert Contributor
I am: Charlie L.
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Let me be the first to welcome you to the site. Lots of potential sitting there on your bench. Will be awaiting pics of when it's finished.
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12-20-2005, 03:20 PM | #3 |
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I am: Ken Currell
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Welcome
Looks like a fair size hull. Looks old but in good shape. Certainly has potopotential hope you took some pics of the boat before you started. Hopefully there will be some boat guys in your area to help you as well as the guys on RCC. Cheers |
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12-23-2005, 07:46 AM | #5 |
Thanks for the welcome guys.
The hull is actually 39" long and about 11" wide, Shes pretty big. Unfortunately I didn't take a single before picture. I'm kind of beating myself up about it since I like to keep photo records of my projects. There wasn't much to her anyway. The original cabin has been Looong gone and the deck was just a bare space with a hole in the center for the engine, cooling lines, exhaust, etc... and a hole in the stern for the dual rudder controls. I replaced the transom back in high school along with a new set of talpipes and exhaust. I'm extremely excited to hear the engine through my "new" 10 year old exhaust. I am a draftsman by trade so I am working on a set of CAD drawings for the new deck configuration. I'll post those when they are done to. I'm going for a very large (scale 40 ish foot) 1930's style chris craft inspired powerboat. I know the hull isn't exactly right for that but I love old style speed boats enough to overlook that. One of these days I plan on building a real scale chris craft......I jest need to finish this one first. I will keep updating my progress. I'm hoping I will get a bit of time while I'm off for Christmas to do some major work on her. |
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01-06-2006, 09:21 AM | #6 |
Engine now in
Well I managed some time over the Christmas Holiday to get some work done on the old boat. . I know servos should technically be sealed in a box to keep water out but I am planning on sealing the entire engine compartment....I hope. I'm building off a combination of what was there originally and the rest I just make up as I go.
I need another parts order now for stuff like fuel tank, stuffing boxes, strut, rudders. Hopefully I can get all the mechanics done by the spring. I'd love to get a test run in this summer before I start on the deck and hull finish. |
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01-06-2006, 09:44 AM | #7 |
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Looks real good!
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01-06-2006, 12:49 PM | #8 | |
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I am: Ken Currell
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Re: Engine now in
Hmmmm
Quote:
Your engine installation looks good. Cheers |
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01-06-2006, 01:00 PM | #9 |
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I was going to say the same thing, but if you re-read the original post, it seems he will be adding water cooling.
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Ron Mattiuz Flying Tigers RC Club "Flying an airplane is just like riding a bike...except it's harder to put cards in the spokes" |
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01-06-2006, 08:51 PM | #10 |
RCC Contributor
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Model Plane engines and Boats
I've seen Model Plane engines in boats, but they don't last too long. It's good that you will use a "water Jacket" to cool the engine, but this is not the best solution as engines need to run at a certain temperature. Most importantly, the fins on a model plane engine is best suited to keep it at that certain right temperature. If you wanted a cheap engine, then you should have used an LA engine instead. They seem to perform better in boats. I've also seen "Model Buggy engines" in lobster boats (outriggers), runs good, but burns up after awhile.
Ok, now for the big question.....if you completely seal the engine compartment....How will the carb get fresh air for combustion? What about the exhaust waste? Would this be splashed all over the engine compartment or exited the engine box. I'm taking it that you don't want water into the engine compartment...it eventually gets in through the stuffing tube unless you "re-grease" after every run. These are just questions that entered my mind as i was reading through this thread. Since the boat is not made for racing, but for pleasure crusing, then leave the engine compartment open to air cool the engine, feed the carb with air...leaving off the water jacket and use an exhaust deflector or suitable heat resistant tubing from Canadian Tire to vent the exhaust waste. These are just MHO. I must commend you on your endeavour though and your tribute to your dad. I can tell there is a good bond between the two of you. I wish you all success with this project. 39" length eh! Now if you want some power and rock the lake with this puppy...a Zenoah 25 PUM modied by Need For Speed Hobbies...haha Cheers. |
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