RC Hydroplane Turn Fin Brackets | A Better Way (The M5 Way!)
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This video is all about turn fin mounting brackets for your radio controlled model hydroplane project. Specifically, we discuss the how and why of proper bracket construction and as usual, do a little drillin' and millin' along the way!
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/3KyTQEQ Stainless 8-32 T-nuts for mounting the turn fin bracket
amzn.to/3xPDyjy Stainless 8-32 Socket Head Cap Screws
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/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/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/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/3vXd7Yc Digital angle gauge. We'll be using this a LOT during the build. Get it now so you'll be ready.
Finnish plywood from Aircraft Spruce available here in metric sizes; www.aircraftspruce.com/catalo...
Domestic birch ply from BalsaUSA; shop.balsausa.com/category_s/...
Need to build your jig first? Watch this video and I'll show you how! • RC Hydroplane Construc...
M5PerfHydros.com -- M5 Performance Hydroplanes is on Facebook!
allrc1.com -- Need RC boat parts? Get what you need at Rattlesnake RC
www.rcunlimiteds.com/ -- R/C Unlimiteds, the largest scale hydroplane racing club in the world
mlboatworksrc.com/ -- Awesome Boat Kits available at MLBoatworks
Пікірлер: 25
Wow, i am very new to rc hydro racing but thanks to you and your videos, you have helped me at least feel like i know a little about this sport, i cant thank you enough for the time and effort you put into this great hobby, i look forward to the day when i can compete on your level. Thank you for all you do. Gino Pastori
@M5PerfHydros
Жыл бұрын
Thanks GP! Maybe it's time for you to build a boat, hmm?
I've learned from the big boats, the GRAIN of the 7075-T651 is very important. The mill grain in the verticle access makes the fin stiffer.
@M5PerfHydros
Жыл бұрын
Yes!
If you use an erasable fine point gel pen you would not only be able to correct your drawings and redraw but they will be more visible to the camera.
@M5PerfHydros
Жыл бұрын
Mind blown
Scott, What about titanium screws?? They sure are light!!!
@M5PerfHydros
Жыл бұрын
Hmmm!
@philipmitchell90
Жыл бұрын
I'll tease you one more. WoO Sprint cars use HOLLOW TITANIUM Bolts and screws. Hollow Titanium.....Wipe that drool off your chin!!!
@M5PerfHydros
Жыл бұрын
I'm gonna use imaginary screws from now on. Zero weight!
how wide a piece of al.is needed to make that fin.
Scott, I found some awesome lights on amazon for my shop. Let me know if you want me to send a link. Super bright leds.
@M5PerfHydros
Жыл бұрын
I'm always looking for cool new stuff... Send the link!
When mounting a curved turnfin would I mount the bracket at the 12° or 90°
@M5PerfHydros
Жыл бұрын
I'm not a fan of curved turn fins, but when they are used I usually see them mounted near 90°
According to club rules the turn fin is supposed to have a “break away” (more accurately a “fold up”) capability in case of an accident where it won’t destroy another boat as badly. How is this accomplished, particularly if support struts, cotter pins, or doubling the screws up are part of the rigidity solution?
@M5PerfHydros
6 ай бұрын
It's a consideration. The support strut should fold up pretty easily, methinks. I've been including a second, tiny brass locating screw also, same as used for a breakaway pin on the rudder. Both of these items will increase the potential for damage at least a little bit, so it's best to stay out of my way!
So you are going to leave the inner chamfer on the bracket instead of milling it out? That's one of the issues I have with the Mojo turn fin mount, I can't move the turn fin as far forward as I would like to due to the chamfer. He also did a 3 bolt attachment point to the sponson with no adjustability for angle. Is that normal for a curved turn fin? My only experience previous to this was with the UL-1 and the UL-19 which both have angle adjustability and the UL-1 comes with a curved turn fin.
@InspGadgt
Жыл бұрын
Oh and the other issue with mounting the fin on the outside is drag when the water rides up the inside of the turn fin on it's way to the rooster tail, it hits the bracket and gets all disrupted.
@M5PerfHydros
Жыл бұрын
Check out the short video I just posted to answer your first question. As to your second point, YES the bracket will terribly disrupt the water as it rides up the inside of the fin if the bracket is inboard of the fin! I'm so anal about this that I use a button head screw to attach the fin so I don't have a big bolt head in the water path
@InspGadgt
Жыл бұрын
@@M5PerfHydros If the deck hangs over the turn fin and the water hits the deck on it's way out I imagine that would cause an issue too. The sport 20 hydro I'm building now has a bit more overhang on the deck then I like so I will probably trim that back to make sure there's no interference there. As for the chamfer, the Mojo uses 2 screws and the pivot screw is close to the corner of the fin so I don't have much option to trim it back for clearance like you did on yours. So being inspired by your videos I did something I didn't want to do...I used my Dremel and files to remove the chamfer on the inside of the bracket. I don't think a sport 20 hydro is going to need all that added strength on an already very thick bracket. I'm not as accurate as I would like to be using hand tools like files and I don't have access to a mill (apartment living :( ) so I didn't want to do it. But I finally committed and did it. I figured since I had 2 brackets anyway I could try it on one. So far it is coming out fairly acceptable. I planned on using a button head screw on the inside as well :)
@M5PerfHydros
Жыл бұрын
You'll be fine. The material I normally use, even on my gas hydro, has a much smaller radius and it still holds well enough
You sure you didn't build the great pyramid of giza...lol
@M5PerfHydros
Жыл бұрын
Hmm, new video series?
@swaldoski
Жыл бұрын
@@M5PerfHydros sure why not...lol