Scale RC Model Hydroplane Sponson Construction | Framing & Stringers

Our RC Hydroplane Build Series Continues! This video will show you how to properly frame and reinforce the sponsons in a radio controlled scale model hydroplane
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Watch the entire build series here;
• Building a Radio Contr...
Need tools and parts to complete your build? Check out the links below to see many of the tools and supplies used in this video series. Disclaimer - as an Amazon Affiliate I earn a commission on stuff in these links. And by commission I mean pennies, but, yeah, well, it's something.
But have no fear! You pay nothing extra, only get great parts!
amzn.to/3XtMlSU Dremel wood cutting wheel as seen in the video. Get the mandrel too!
amzn.to/3QAtfIy Get this Dremel mandrel for mounting the cutting wheel and other accessories
amzn.to/3Fiw0tA 1-2-3 Blocks as seen in my videos - Super Handy!
amzn.to/3SSBeC2 Dremel Carbide Tooth Cutting & Grinding Bit
amzn.to/3XKWXh1 Cordless Dremel Rotary Tool - Ditch the cord!
amzn.to/3wHnHmG Dremel Right Angle Attachment - Best. Tool. Ever!
amzn.to/3jl3f7R Wood Craft Picks for making perfect little radius fillets
amzn.to/3xB0H9r Craft Sticks, perfect for making slightly larger radius fillets with epoxy
amzn.to/3ISiAqF Angle Protractor as seen in my videos - A must have tool!
amzn.to/3iD3ZVK G/Flex Epoxy - This is the one you want for the majority of the assembly. Getcha some!
amzn.to/3kbMdcq THE BEST epoxy application brushes - no stray hairs! Luv em!
amzn.to/3XxuKK1 Starbond Flexible Medium CA - The only CA glue you will ever need
amzn.to/3JjNRTR Half-Inch Hobby Blades as seen in my videos
amzn.to/3Hph3rp Digital Scale for epoxy measuring and mixing
amzn.to/3DtueFm West Systems Collodial Silica (Hey, YOU try to pronounce it!)
amzn.to/3CW6DwJ 48 Inch Aluminum Straightedge - Gotta have it!
amzn.to/3vXd7Yc Digital angle gauge. We'll be using this a LOT during the build. Get it now so you'll be ready.
amzn.to/3xMXHXl 10-32 Alloy Steel Button Head Cap Screws
Finnish plywood from Aircraft Spruce available here in metric sizes; www.aircraftsp...
Domestic birch ply from BalsaUSA; shop.balsausa....
Need to build your jig first? Watch this video and I'll show you how! • RC Hydroplane Construc...
M5PerfHy... -- M5 Performance Hydroplanes is on Facebook!
allrc1.com -- Need RC boat parts? Get what you need at Rattlesnake RC
www.rcunlimite... -- R/C Unlimiteds, the largest scale hydroplane racing club in the world
mlboatworksrc.... -- Awesome Boat Kits available at MLBoatworks

[@philipmitchell90]

Hey Scott!! A tip for your jig to keep epoxy or other goop from sticking to it. Clear (I use 3M) packing tape. Nothing sticks to that stuff.

[@M5PerfHydros]

I like it!

[@genelyle304]

Great stuff as always! Love those Dogs !

[@M5PerfHydros]

Thanks Gene!

[@vinniebuiltRC]

I love my new dremel 90ﾟ head

[@M5PerfHydros]

Don't leave home without it!

[@ifly65]

Man Scott, Im speechless. I painted as a pro in the avaition field for years on news helicopters with huge color fade logos on the sides of each one. The clear coat can spray you suggested was uncanny good...get it. Wow. It came out gorgeous. It laid down better than PPG w all of the temp stages, and no runs. Ill make a video of it on the bench, but I'd like to show pics if possible. Thanks again!

[@M5PerfHydros]

Old Flier, You left me hanging with your first comment... Why are you speechless? But about the clear coat, I appreciate hearing that you've had good results. I'm still hesitant, but your experience helps a little bit. Keep watching the videos and who knows, maybe I'll put a rattle can clear coat video in there somewhere

[@josephperry6822]

Love watching professional custom builders like yourself!! This build series is outstanding buddy!!

[@M5PerfHydros]

Thanks JP ... Now go build a boat!

[@swaldoski]

I love your videos Scott. Master builder Making all bad builders into better builders.Made me a better builder for sure.

[@M5PerfHydros]

Bad builders becoming better builders? Beautiful!

[@kazenix87]

It's really cool watching this one go together. Always looking forward to the next installment.

[@M5PerfHydros]

Thanks, me too!

[@alexanderrey6009]

Hei, your videos are really cool. I like building things self made! Could you do a full theory video about angles geometry and things related to this. I want to start my own build but don't want stick something together without having a clue about the background.

[@M5PerfHydros]

I think I've touched on those things one at a time in the different videos, but you're right that I've never done a separate video solely about setup. I'll do it, soon as this boat is done

[@lenturtle7954]

And get the manufacturer to update his kit!!!

[@M5PerfHydros]

I've mentioned it to him!

[@lenturtle7954]

He may find it makes moe sales for him if he reduces the time modifying his kits .

[@edwardjohnson3189]

Scott. What size motor are you going to be putting in the boat? Where you getting the motor and drivetrain from?

[@M5PerfHydros]

This one will have a .67 nitro engine from CMB, with a solid wire driveline from Brent Byers. Keep watching and you'll see it all over time

[@oleflatop9676]

I see the left sponson is a different shape than the right. why? learning a lot from these videos.thanks

[@M5PerfHydros]

Eh? The sponsons are the same. At some point in the video I overlay the chines, but only to show the area that needs to be removed to make them identical. Glad you're enjoying the videos... Now go build a boat!

[@oleflatop9676]

frames 3l &3r are quite a bit different?@@M5PerfHydros

[@M5PerfHydros]

The sponson transoms? They're the same, but both are quite different from the originals. Maybe you noticed one of the new ones together with one of the originals at some point. You must have missed the video where I show how to make the new ones we will be using.

[@oleflatop9676]

@@M5PerfHydros your right. I missed the boat. thank you.

[@M5PerfHydros]

Pun intended, I assume! 🤣

[@jameswalker-pm2tn]

Does the charred edges from the laser cut that get epoxy need cleaned up before assembling with epoxy to get a good bond?

[@M5PerfHydros]

That's a really good question. Truth is I don't know if it makes a difference, but whenever I think of it I do sand those areas lightly prior to applying epoxy

[@chriscorrigan7420]

G'day Scott. Mate I've been lovin' watching your videos there's no bull sh..dust just good old very well done tutoring. Great mate. I have been looking at other site's on the internet and came across in my saved titles an RC boat from Blazer Marine called a Whiplash Gen 3. Do you know anything about them. It is the style of boat kit I'm looking for and have been for a long time. We don't have anything like these here in Australia in fact it's similar to the one your building now. I'm watching you as I'm writing this message. I watched another of your videos and you were building your own design. I would be happy if and when you've tested it if you would be selling kits or even plans. It looks a beast. I'm not looking at racing or anything at the moment but just outright hooning on a beautiful little mountain lake we have close buy just for fun. Being an old rev head in boats [used to race them years ago] I came across the Arrowshark twin prop shaft counter rotating gear box. Now we're talking,,, two props. Do you know much about them or have you ever fitted one into a boats and how did it go? When I eventually get a kit of some sort I am definitely going to be watching your videos while I'm building the boats and all the set up's. Most informative and exact stuff ever.Excellent tips and pointers.. Bloody great stuff mate. Thank you.

[@M5PerfHydros]

Thanks CC! I've not built any of the Whiplash boats, but I hear they're awesome. Of course, if I ever did build one I'd probably totally change the entire design, and ruin it! Go for it... What's the worst that could happen?

[@chriscorrigan7420]

@@M5PerfHydros G'day Scott. I'm getting no response from Blazer boats so I have decided to go it myself. I don't know if you have seen the New Zealand unlimited hydro's but I have done a bit of a design similar to them. There's also a few bloke's here in Aus that also run them with huge success. These things look awesome in and on the water so I thought I'd do a Scott and have a go. My question to you is, if you don't mind. This is all unfamiliar territory for me but I've been a marine tech for 56 years and never got into the models. Raced lots, cost heaps and had a ball doing it. My question is. Should I build the sponsons in scale that is wide flares or should they be narrowed down to minimise kiting. I'm looking at a CMB .80 for the power so it is going to be quite stable well I hope it is. You've got the bug to bite me and I'm itching to get started. Appreciate any help. Thanks. From Aus.

[@chriscorrigan7420]

@@M5PerfHydros G'day Scott. I watched your video where you came up with a prop tube support off the engine and you were talking about it moving and you don't like silastic. Neither do I. It causes engines to blow if you use it wrong. Disasterous shit. "Sealing the tube into the bottom of the boat". I had a brain fart. Well it might not work. Instead of using silastic aroung the tube through the hull why couldn't you adapt a control rod bellows like the ones you use on the servo box exits and transom hole. That would allow your tube to move all it wants and not have any contact with the hull - hole. Just a thought it would work similar to a log gland in a speed boat. I'm going to email your mate to get some gear off him.

[@chriscorrigan7420]

@@M5PerfHydros G'day again. Just in case you don't understand what I am meaning Use the bellows around the shaft tube and attach it to the boat somehow. I'll leave you alone now.

[@M5PerfHydros]

I get what you're saying, but I think a little more support than just those rubber bellows is needed. But hey... Why don't you try it and let me know if it works! 🏁🏁

[@02155Tony]

Why is there a curved downward deck section after the rear sponson bulkhead?

[@M5PerfHydros]

This boat is a scale replica of an actual unlimited hydroplane from the 80's called The Eliminator. The dropped sponson idea was the brainchild of Les Staudacher, the builder

[@matthewbeville6675]

Is there any way I can send you some images of my design on here?

[@michaelvandewater8686]

Ok I was thinking if this boat is over sized why doesn't Mike redesign the boat to make it legal in that class

[@M5PerfHydros]

Ya I don't know. I mentioned it to him the last time I built this boat years ago, and I kinda expected the problem to be fixed, but, ya, it's not. Maybe now after these videos?