Aviation Design's Diamond 70mm EDF - Plans and Build
- Thread starter DamoRC
- Start date
Is this diamond just a replacement for the last one?Good luck
Not quite. Yes, its a replacement for the one I trashed a month or so ago but the design is a new revision.
DamoRC
Maiden went ok, first attempt she was a lawn dart. Nose in the soft dirt, throw was to steep. Had to pull her out, nose damage but not to bad. Had to give full up. Second attempt little better, bounced of the grass to hold. Third time success, smooth throw, with full up and away she went.
Once airborne it is a stable flyer. Make some repairs an try to find more up throw in elevator. Speed was good 4s 3700.
Therry
Great! Congrats on the maiden! I am glad you got her into the air eventually. I am wondering about the need to give her "full up". Do you mean that to launch her you have to apply full up elevator to get her to start flying, or do you mean that in the air you needed to trim the elevator all the way up to keep her flying level?
A couple of suggestions - first, check if there is any incidence in the horizontal stablizer that might be creating a push down on the tail. Second, you could try moving the balance back a little.
Anyway, sounds like she is flying, just needs some tweaks and nose repairs
Looking forward to seeing her painted up!
DamoRC
Yep - at some point I will update / replace the plans for this "2018" version. Kicking myself now because I just finished a build for another guy down at our field and I could have used it as a build thread. There are still a couple of things to figure out on this version though and the plans i have are not user friendly.
I also tried a slightly smaller version where I crammed (and I mean crammed) a 64mm EDF from a Stinger (the older 3S version) into an 80% sized airframe. Unfortunately it performed as badly as it did in the Stinger (which to be fair was a donor plane and had seen some abuse). That was on 3S. I put a 4S capable ESC in and flew it with a 2200mAh 4S and it goes like the clappers. I decided to paint it with the fluorescent green and orange and I was only when I removed the tape to reveal the white stripes that I realized I had just painted the Irish flag on the plane!
DamoRC
Have been a while but today she got some color. The horizontal stab was indeed not horizontal. Thanks for the tip. Now she flies nice. Had to make a new nose, a crash broke the nose.Great! Congrats on the maiden! I am glad you got her into the air eventually. I am wondering about the need to give her "full up". Do you mean that to launch her you have to apply full up elevator to get her to start flying, or do you mean that in the air you needed to trim the elevator all the way up to keep her flying level?
A couple of suggestions - first, check if there is any incidence in the horizontal stablizer that might be creating a push down on the tail. Second, you could try moving the balance back a little.
Anyway, sounds like she is flying, just needs some tweaks and nose repairs
Looking forward to seeing her painted up!
DamoRC
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You are getting very handy in building does diamonds. Nice work!
Thank you DamoRC. The inlets as on the plan are to small. This mod works and doesn't look to bad.
I have to stepup my building skills. A closer look shows that this build is a little rough.
Airleon servos are now on the undersite of the wing. Must be on topsite,
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@Therry - sincere apologies - I don't know how I missed your post with the video - she looks great in the air and what a landing!
hi, very interesting build a detailed build precess a clear plan.
i will build one soon because is so fun to fly an rare plane in my club
thank you
You're welcome. If you are willing to wait a few weeks I have been planning on doing the 2018 version plan / build. It uses the score cut / gorilla glue / frame approach that I have used for a lot of my builds lately and the wing is a simpler flat bottomed thing wing which behaves pretty well. Also, the way the wing is installed now allows for huge inlet cutouts over the wing so no more starving the EDF.
DamoRC
I just had a 90mm EDF, ESC and 6 Cell Battery land on my door...
Sadly I didn't have much of a plan for it. Then i Remembered seeing your 90mm version of this in Person!
Now I have to ask, do you have any tips specifically for the 90mm?
For Example: Areas you would strengthen, openings you would made bigger/smaller, or USE Metal gear servos.
Also any single sheet pdfs. are am I relegated to small sheets.
Sadly I didn't have much of a plan for it. Then i Remembered seeing your 90mm version of this in Person!
Now I have to ask, do you have any tips specifically for the 90mm?
For Example: Areas you would strengthen, openings you would made bigger/smaller, or USE Metal gear servos.
Also any single sheet pdfs. are am I relegated to small sheets.
Can't find the proper emoji so..... "Droool!"
Okay - I can find the emoji for this one -
- because I have never build a 90mm version and have no idea where you might have seen it!All that being said, I would love to see what this thing would do with a 90mm on 6S. So if you can send me the specs for the EDF and battery (interested in dimensions and weight or a link to the products with this info) I will see what it would take to shoehorn the 90mm into the current frame or scale it up by 5 or 10 % if needed.
I'm working on a final set of plans now (still need a couple of tweaks to make the build a little more user friendly), the I want to build a version according to those plans just to make sure everything is good, then I will post them (probably in a new build thread). This will take a couple of weeks but this is a good time to see what tweaks are needed for the 90mm.
DamoRC
p.s. - welcome back? seems like we have not seen much of you lately?
dang... who did I see with the Diamond with a 90mm. I thought for sure...right CALI... now I have to think.
Anyway... the 90 mm version I saw pre and post crash was amazing. it looked beautiful in both states.
The wielder of the lawn dart stated that it handled beautifully (as you may expect) and was destroyed primarily due to hot-dogging.
Anyway... the 90 mm version I saw pre and post crash was amazing. it looked beautiful in both states.
The wielder of the lawn dart stated that it handled beautifully (as you may expect) and was destroyed primarily due to hot-dogging.
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