Bending Brakes: Everything you need to know!

Рет қаралды 6,409

Күн бұрын

Welcome back fellow aircraft builders and aviation enthusiasts!
Today's video is all about bending brake options for building the Zenith STOL CH750. There is a lot of detailed information in this video about the longest and thickest bends in the aircraft, and what types of brakes can be used to fabricate different kinds of parts. I've included links to the 3 most popular DIY bending brakes below, along with Dan Hill's build series on the HomebuiltHelp Brake. Check 'em out!
Dave Clay Bending Brake:
drive.google.com/file/d/0B0-6...
HomebuiltHELP Bending Brake:
www.homebuilthelp.com/Tip_of_W...
Mac's Machine & Design 96040 Sheet Brake:
www.macsmachine.com/
Dan Hill's HomebuiltHELP Bending Brake Build Series:
• Scratch Building A Zen...
Thanks for watching, and check out my blog at gregsplane.blogspot.com to follow my progress!
For more information about the Zenith STOL CH750, check out Zenith Aircraft Company at www.zenithair.net
Copyrighted materials used with permission from Zenith Aircraft Company.

Пікірлер: 40

@GregsZenithSTOLCH750 2 жыл бұрын

I've added a new link to the Dave Clay Brake, which hopefully will resolve the need to request access after Google changed their security settings on Drive. If anyone has any trouble downloading the Dave Clay plans, please let me know.

@user-di8sx4ix7h 25 күн бұрын

Need more sites like this

@Redchrome1 6 жыл бұрын

Thanks for the update, it's good to see another video from you!

@CM-010 6 жыл бұрын

Great Video Sir. I've been in aviation for 24+ years and am a avid and capable sheet metal guy, and STILL learned some great things from your video. Thank you!

@JBELE051 6 жыл бұрын

Greg, nice production, video and sound ! intro ! wow definitely the best video so far !

@GregsZenithSTOLCH750 6 жыл бұрын

Thank you! I've had a long hiatus due to learning new software and camera equipment, and revamping my video format. This will be the new, ever-evolving template moving forward.

@jdvaillancourt 6 жыл бұрын

Fantastic video, Greg! This answered the questions I've had about brakes since seeing what you've been through. Also, nice intro :)

@GregsZenithSTOLCH750 6 жыл бұрын

Thank you! Glad the info was helpful.

@deep6thisdeep6this92 5 жыл бұрын

as usual, very complete and informative.

@GregsZenithSTOLCH750 5 жыл бұрын

Thank you!

@scratchbuilder5952 6 жыл бұрын

Great Video! love the intro

@jonathanmellette8541 5 жыл бұрын

Very well done. David Clay is one of my best friends. :) I think it's awesome that his bending brake helped so many people, and that it has been adapted and used since he created it in 2006!

@GregsZenithSTOLCH750 5 жыл бұрын

Thank you! His brake is one of the best airplane project innovations I've seen. I made a LOT of quality parts on it before I reached its limitations. Thanks for watching.

@keithdoot7366 6 жыл бұрын

Thanks for the info. I'm starting a Cruzer and been trying to figure out a brake process. You made the answer easy! Buy the large/thick parts, build the Homebuilt Help brake. Try to work in a cost effective manner. Keep up the good work!

@114mohe 6 жыл бұрын

Great video Greg, glad to see you are posting again. I gave up trying to bend anything beyond 4 feet in length and just bought all the long pieces from the factory. It ended up being cheaper in the long run and the parts were made correctly. I guess my plane will only be 85% scratch built...oh well.

@GregsZenithSTOLCH750 6 жыл бұрын

It's not a bad choice to buy some prefabricated parts, especially if you're having problems getting things to turn out correctly. Nothing wrong with buying some of the more difficult parts!

@CM-010 6 жыл бұрын

One trick I've used and found to work well, is using a piece of steel round stock of the appropriate diameter required for the radius you are forming. When used with a cheaper diy "basic" brake, works well. Especially when working with 6061-T6 to avoid stress cracks along the bend radius. Just my $0.02. Again, superb video, and info. Thank you for taking the time to make this. 👍👍

@GregsZenithSTOLCH750 6 жыл бұрын

If I'd had my TIG welder when I first built my original brake, I would have made a custom clamping leaf shoe with steel rod, as you described above. The oak shoe that I originally used worked extremely well, surprisingly, all the way up to 8' bends. Never broke or cracked or anything! But I'd still go with a steel rod welded in sections to removable tabs along the clamping leaf. That way, I could have 2 of them: 1 for 1/4" radius and 1 for 1/8" radius. The 10' industrial brake I have access to was modified in exactly that way and it works beautifully.

@hillsgun 6 жыл бұрын

Thanks Greg: I appreciate the plug. Great explanation on brakes. In the future I will add a couple of options for the longer pieces which hopefully can be built rather inexpensively. I will add that on my Mac's brake at full capacity with .040 for the longerons on my 701 I could not completly eliminate a slight bow even after adding another tensioning plate to the front of the leaf. It is not enough to be a problem, but I think that we are at the full capacity of the brake, My personal opinion is that any attempt to extend the capacity of the brake even another foot, will give less than satisfactory results

@GregsZenithSTOLCH750 6 жыл бұрын

There were more details in my original script about the .040" and adding length to the Mac's brake, but it was getting a little long. Completely agree on your analysis. There was just so much information to include...I could have done a 3-parter!

@hillsgun 6 жыл бұрын

I am going to have to go back thru my build log because as I think about it I am not sure that my .040 longerons were built on the Mac's brake. I think I added another plate to the front of the leaf to add tension and it helped the bowing but did not completly eliminate it. That is when I built my crude press brake and formed my longerons on it, as well as all my z channel

@GregsZenithSTOLCH750 6 жыл бұрын

From what I understand, several kit builders have reported receiving bowed parts from Zenith on those longer bends. It seems to be a non-issue because the bow is fairly slight. I plan to build the CH640 after the 750 is done...from what I understand, the longest bends in that plane are nearly 12' for the tail section spars. No idea how to accommodate that! One of the builders on Zenith.Aero said he did it by modifying his Dave Clay brake hinges, and building it to 12', but I haven's seen any pictures.

@hillsgun 6 жыл бұрын

way back when I needed it I built a crude press brake from I-beam and powered by 2 jacks. built at about 8" but could easily be scaled up. I haven't shown pictures as it is sitting out in the weather and is covered in rust but I will do something with it soon. It is not convenient to use but for what it was intended to do it worked well. I also have a design here somewhere of a manual press brake which could be any length for those few long bends. Dan.

@GregsZenithSTOLCH750 6 жыл бұрын

I'd definitely be interested in seeing it, even if you don't clean it up. Depending on how the 640 tail spars are designed, I may consider altering then to mimic the main wing spars, with built-up caps made from angle instead of forming them. I'll have to do a lot of careful stress & weight calculations, though. I normally wouldn't even consider that kind of modification, but hey, this is experimental aviation!

@txdave2 5 жыл бұрын

Hi Gregg. I enjoyed hearing you talk about my bending brake design. I ended up building a Sonex from scratch. Using some creative thinking I was able to bend every part including the control surface skins. It was a challenge, but I was determined. I sold the Sonex after a few years. The current owner removed my VW engine and installed a Corvair conversion. He flew it to Oshkosh last year. Here's a short video of my Sonex: kzfaq.info/get/bejne/d7FdbLGfndjHfIU.html

@GregsZenithSTOLCH750 5 жыл бұрын

Great to hear from you, sir! Your brake allowed me to bend probably 75% of the parts in the Zenith. When I first got started with it, the parts turned out so well it gave me confidence that I could eventually complete the Zenith. Still a long way to go, but it all started with those first few parts formed on your brake design!

@txdave2 5 жыл бұрын

@@GregsZenithSTOLCH750 Building and flying my own airplane was an incredibly rewarding experience. Glad to hear my brake helped you along the way in your build.