Foamboard Building Techniques: Metal Motor Mounts
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- Опубликовано: 3 окт 2024
- There are many good ways to mount a motor on a scratchbuilt foamie. Here is a simple and effective method I have been using that utilizes an L-bent piece of metal plate, heavy duty two-sided foam tape, and a plastic gift card. It is strong in flight but comes apart in a crash such that it is field repairable. Also easily adjustable by reapplying the tape and repositioning.
Thin aluminum and steel work fine. I am using 1mm titanium plate salvaged from used ("burnt out") saltwater pool electrolytic cell. This is the component that converts salt into chlorine for disinfecting the pool. $400 new, it's a shame to throw the used ones away. Use for RC!
Just wanted to thank you for all of the incredible information that you've assembled on this topic. I have a six year old son and we're building one of these planes together. Your RUclips channel is like taking a college course in foam aircraft construction. I never would have attempted this project without your efforts to share, and my son and I will likely never forget the experience. Again - thank you for sharing your talents. Dave
11 years on, I watched your video. Good info . Cheers.
A tip for drilling holes in metal like that, use a center punch! The drill bit will naturally wander to the center of the divot instead of down the work piece.
Those work great, just take a little more work, and not as crash resistant. But they are inexpensive and very light.
Great video!!!! we need more!
Very valuable tips. Thanks for sharing.
Gracias saludos desde jalisco mexico. Sus trabajo es MUY buena calidad !
For the delta shown, 0-degree thrustline. If I use this motor mount on a high-wing I put in 3-5 degrees of downthrust.
Thanks for all the great tips. Between you and Flite Test, I am getting so many good ideas for my first scratch build.
1" wide and 4" long (plus or minus), bent at 1" so there is a 1" tab for the motor and a 3" tab for the mounting plate.
The secret is simple - enable the brake on the ESC. The prop will hit the ground about 1/3 of the time, but since it is not spinning it will usually not break. I have not broken a prop (other than in crashes) in over 4 years in this way.
I found that a piece of aluminum closet door track carved down to a pretty nice motor mount. I bought a 4 ft piece at a building material recycler. (Bring Recycling in Eugene OR. I'm also starting to collect gift cards, old credit cards, ect.
Scotch heavy duty outdoor mounting tape, Home Depot or Lowe's. Fairly common stuff.
@Kpilot786457 I know! That's why I was so bummed when I found out my saltwater pool cell would be $400 to replace, but also excited when I discovered it had titanium plate inside I could use. Anyone living in Arizona, California, or Australia particularly, look out for these saltwater pool cells on the way to the trash!
Now I'm jealous of your titanium! Few people have pools in the UK, and even less salt water ones. :¬(
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But I have been picking up some tough rigid plastic containers for machine shop cutting tools. I could cut them down with a taper from front to rear, so ending up with a 3 sided mount. Though I could only do smaller motors at the moment.
Great Video
Thank you so much for the free Titanium motor mount idea. I used Velcro to attach it to the plane. I can move it plane to plane. I even loaned it to a friend while he waits for the HK order to arrive. I have bent and rebent it several times and no problems. It has even saved several propellers.
I just built a motor mount like this a week ago, thought I had an original idea : / Anyways, I mounted it on the underside so the motor was inline with the wing (Maxi Swift). Wish I wouldn't have, now its impossible to get to the screws.
Thanks for all the ideas btw.
@grey0powerlessnesss Just no need for folding prop. Not gliding for efficiency nor needed for belly landing in grass.
great vid!
@AdrenalinRusher Oh I certainly didn't originate the idea either but it's still a good idea so take pride in that! How's the plane? Sounds like your thrust line alignment is a great plan, better for stability. I only mount all my stuff on top coz I land on wet grass all the time. Let's see your video man!
Just built one of these birds, and was wondering, what size propeller does he use?
Dang, I've thrown away so many gift cards..
@Tsavah It's the saltwater pool electrolytic cell that has the titanium plates. They're not uncommon in the SW USA but you need to be lucky enough to encounter a used one on the way to the garbage. Otherwise aluminum is decent.
Sheet steel might be a little flexible, but try it out. If it's not springy enough to hold shape you could reinforce it. Simpson ties work well but are a bit heavy. Great idea on the HD gift cards!
32nd St. and Union Hills, near PV Community College, Desert Ridge, Costco by 101 and Cave Creek is my main park where I fly.
About 10g for the titanium, 20g for aluminum, 30g for steel like a beefy Simpson tie, trimmed to use.
RE:
Do you use any down and side thrust when you mount the motor.
i'm sure he does, i find 2 deg down and left most often
Hi, please do a video on making a Metal Motor Mounts right from begining to end. I find it hard to make holes and bend the sheet. How do you do that. Thanks.
Hello, I'm building a Photon now and I'm looking for such a Titan sheet. Could you tell me which Titan Grad you are using?
What's the width and length of the motor mount strips? Thank you.
And of course, you have to land in a glide, power off.
J'aime beaucoup vos constructions dont je m'inspire pour mes propres modèles, je ne fait que quelques modifications, principalement au niveau des ailes
Par contre je ne trouve pas de scotch transparent de couleur en France si vous avez une adresse a me fournir ,je vous en serais très reconnaissant
Merci d'avance
Do you use any down and side thrust when you mount the motor
How do you cut a 1mm Titanium sheet. What tool you use ?
Hello. I know your video took place years ago but, thx nevertheless. I happened to figure out this L-shaped motor mount technique using tin (aluminum) and JB Weld since it bends easier for thrust angle adjustments. However, I haven't figured out how to set the mount in my foam UMX Radian's fuselage yet. Do you have any videos, tricks, ideas for mounting that L-shaped mount on to an uneven surfaced foam floor of the fuselage? Thanks!
Hi. I had the same problem. That is if you mean the floor of the fuselage not being parallel to the wing because the floor is angled down from the nose of the aircraft. If that's not what you mean, sorry. Anyway, my solution was to bend the mount to match the slant of the fuselage, so that the vertical surface of the L-shape is perpendicular (or slightly pitched down from) the line of flight. Hope this helps.
what is the thickness of the titanium motor mount you use?
Do u like KF foils Ed?
Thanks for your videos on dollar tree foam delta wings, almost done with my first. I was wondering when you fold up your vertical stabaliser, is it posible that you could use the extra foam and put the stabaliser with the extra foam and build 2stabilisers 3or5in in from edge of the wing. It looks a little cooler but will it fly? Or should I just stick to you're plans thanks tony
Can u link ur supplies?
Any try using the thin metal bracing bracket (about 1.25" wide) at lowes/home depot that you can buy in different lengths/thickness. It is in the lumber section with the other joiners, the longer it is the thicker the brace is so you have a couple options for weight/thickness.
Ed any chance you could let us know what the weight is of the few options you use are so we can try to match that if duplicating your builds.
Excellent!! Thank you! I plan on using 22 ga. sheet metal. Will that work? I also scored many gift cards from Home Depot by asking a cashier to save them for me. Hoping to get enough to share for those having trouble getting them. I will keep you posted. Thank you for replying and for your time.
This might be far fetched but what is your opinion on using the hobby wood as a Mount kind of like how the guys at flitetest use for there power pod and secure it to the front of the noob tube that doesn't have a tapered nose?
Hi Ed. I got 2"x4"x1/8" aluminium angle, cut to 2" wide, like one in your video. Sounds silly but did you ever try to bend it to get the proper degrees of downtrhust. Thanks again.
Great video... how do you stop the prop from hitting the ground on the pusher prop style planes like the drones or wings? thanks
buy a automaticcenter punch for drilling motor mount holes you guys always do stuff the hard way lol
Just put mine on my first plane! Awesome! Video coming soon!
More brilliant advice from the Grandfather of the Foam R/C plane world!
@ExperimentalAirlines Interested that you avoid folding props. Any reason?
This is a great idea but have you had any issues with gyroscopic procession?
This is so excellent. Very helpful for a noob. thx!
Where in AZ? I'm starting out and I'm up by Carefree hwy and I17.
Ok I have another pc about 16 ga. will try that too. Thanks!!
hi ok very good
Ops! I didn't think about the paper separating from the foam.
where does one get the 3m foam tape from? thanks!
Just a additional question. How you bend the titanium?
Do you use any thrust angle?
wear can i get the tape
man that's pretty slick
Good job
Does this work with 2mm sheetmetal?
did you ever find an answer to that question ?