Posts: 664 Threads: 121 Likes Received: 24 in 23 posts Likes Given: 490 Joined: Apr 2021 Reputation: 0 27-Nov-2021, 07:40 PM (This post was last modified: 27-Nov-2021, 07:41 PM by Rosssiiii.) Hello at the moment i don't have good quality camera, so i tried to adapt a cheap camera that i have to the mount: https://i.imgur.com/62wivdo.jpg https://i.imgur.com/Bxf6zaD.jpg https://i.imgur.com/xUKbtq8.jpg i put under the camera some compressed cardboard in order to fill the gap that was there since this camera is thinner than the gopro. as stability, as for the fact that it shouldn't fly away I think it can be okay, it doesn't wobble either: while, on the other hand, I found it extremely inconvenient to screw the rear screws...I couldn't use the screwdriver I usually use ! i had to do that stuff, very slow : https://i.imgur.com/Q0wLjo8.jpg as for the screws to be screwed, now with the tpu it seems that they never reach the end of the stroke, if i screw them too much it seems that the screw penetrates the tpu like here: https://i.imgur.com/bQtZRPT.jpg https://i.imgur.com/K25hkwS.jpg while for the other 3 screws situation is like that: https://i.imgur.com/2zIGW8C.jpg https://i.imgur.com/BroJpLo.jpg https://i.imgur.com/FmsDsn5.jpg 1) is that okay the fact that never reach the end ? of course at that stage it is harder to screw but never seems to come to an end. 2) other question is that i uscually use 12mm screws in that part of the frame, does i can continue to use these 12mm screws even if i put the tpu mount ? 3) ithe weight of the camera is 64 grams, battery included, that of the tpu mount I don't know ... do you think there is a risk of having problems with the drone? I shouldn't have any problems during the flight. • Posts: 6,132 Threads: 172 Likes Received: 2,293 in 1,840 posts Likes Given: 4,743 Joined: Feb 2019 Reputation: 103 a washer could help to screw down the tpu from the cam mount. it looks like the mount will jump over the screws. take a nut and a screw only and mesure the hightnof the tpu under pressure, make the bill with that diameter to decide the screw length. maybe the tuning doesnt match the same with added 64g, or what "problems" are you asking about? • Posts: 664 Threads: 121 Likes Received: 24 in 23 posts Likes Given: 490 Joined: Apr 2021 Reputation: 0 27-Nov-2021, 10:39 PM (This post was last modified: 27-Nov-2021, 10:51 PM by Rosssiiii.) (27-Nov-2021, 09:50 PM)hugnosed_bat Wrote: a washer could help to screw down the tpu from the cam mount. it looks like the mount will jump over the screws. take a nut and a screw only and mesure the hightnof the tpu under pressure, make the bill with that diameter to decide the screw length. maybe the tuning doesnt match the same with added 64g, or what "problems" are you asking about? i have stock tuning, in that case do you think is too much weight and the drone will react differently? so i have to take a nut and put tpu in the middle and start screwing until you see when it deforms? make the bill ? what do you mean here...sorry i don't understand that expression in english. unfortunatly i don't have washer m3 and longer then 12mm i have only 18mm...but if i don't remember bad inside the column there is not even the space to get to put an 18mm screw • Posts: 6,132 Threads: 172 Likes Received: 2,293 in 1,840 posts Likes Given: 4,743 Joined: Feb 2019 Reputation: 103 yes the drone will react differently, maybe you wont recognize anything maybe you will... the deformed tpu is the true size, if you do the math(bill) for deciding the screw length; do the math with the deformed tpu diameter. you might be able to get some washers for it or drill some smaller washers to m3? Posts: 664 Threads: 121 Likes Received: 24 in 23 posts Likes Given: 490 Joined: Apr 2021 Reputation: 0 28-Nov-2021, 06:17 PM (This post was last modified: 28-Nov-2021, 08:08 PM by Rosssiiii.) (28-Nov-2021, 12:40 PM)hugnosed_bat Wrote: yes the drone will react differently, maybe you wont recognize anything maybe you will... the deformed tpu is the true size, if you do the math(bill) for deciding the screw length; do the math with the deformed tpu diameter. you might be able to get some washers for it or drill some smaller washers to m3? that scary me, the fact that i could not reconise the drone so far, i fly enough well and calm. I have only washers for m5, it keep just just one m3 screw: https://i.imgur.com/Ds2yIDm.jpg https://i.imgur.com/qdUXoBP.jpg can be that fine ? --- Now i'm doing the test as you said, here some pictures, here i have not compressed the tpu: https://i.imgur.com/mfQOYlX.jpg https://i.imgur.com/s1Yw3bR.jpg on one side i put also the washers m5 that i have. 1) does i have to screw to compress tpu, but how will i undertand that is time to stop ? ---- 2) i have noticed that the tpu is still a bit compressed after i have removed the screws that i put yesterday, maybe it will require a bit of time before will back in position ? i hope to don't have damaged yesterday the edges in tpu with the pressure of the screw: https://i.imgur.com/EdwaRKh.jpg • Posts: 6,132 Threads: 172 Likes Received: 2,293 in 1,840 posts Likes Given: 4,743 Joined: Feb 2019 Reputation: 103 i would suggest to get some m3 spacers Posts: 664 Threads: 121 Likes Received: 24 in 23 posts Likes Given: 490 Joined: Apr 2021 Reputation: 0 28-Nov-2021, 09:07 PM (This post was last modified: 28-Nov-2021, 09:08 PM by Rosssiiii.) (28-Nov-2021, 08:57 PM)hugnosed_bat Wrote: i would suggest to get some m3 spacers wait, link me an example of m3 spacers. you mean spacer and not washers ? i'm doing a bit of confusion Posts: 6,132 Threads: 172 Likes Received: 2,293 in 1,840 posts Likes Given: 4,743 Joined: Feb 2019 Reputation: 103 im sorry, liked to say washer Posts: 5,935 Threads: 47 Likes Received: 2,790 in 2,252 posts Likes Given: 7,730 Joined: Jul 2019 Reputation: 97 Hi Rosssiii, First, the TPU will be fine as long as it is not broken. I would suggest getting some M3 washers. You could get a Washer Assortment that has different sizes. I would then use an M3 stacked with an M3.5 or maybe an M4. The M3 washers are about the size of the bolt head and might also pull through. Using an M3.5 or M4 will provide more surface area for contact with the TPU. You want something large enough that it will not pull through the TPU. You need something that is large enough to prevent sinking into the TPU. A single M3 washer might not be wide enough to be effective. Another option would be to make a plate that spans both bolts (I would still use am M3 washer). A lot different material could be used depending on what you have and what you can get. You would need a drill and 3mm bit. Material options include, but are not limited to, the following: 1) Carbon Fiber sheets 2) Fiberglass Sheets 3) Copper or brass sheets 4) Heavy plastic This option does require a bit of work. For Me... Since I already stock all of the washers and material needed, I would likely make a brace plate {since I know it will NOT pull through}, drill M3 holes, and use M3 washers on top. For this application, I would likely use either Fiberglass or Heavy plastic; make the plate large enough that it is much larger than the M3 bolt; basically, as large as I could and still be able to fit it in there. Posts: 664 Threads: 121 Likes Received: 24 in 23 posts Likes Given: 490 Joined: Apr 2021 Reputation: 0 29-Nov-2021, 01:08 PM (This post was last modified: 29-Nov-2021, 01:16 PM by Rosssiiii.) (28-Nov-2021, 11:01 PM)iFly4rotors Wrote: Hi Rosssiii, First, the TPU will be fine as long as it is not broken. I would suggest getting some M3 washers. You could get a Washer Assortment that has different sizes. I would then use an M3 stacked with an M3.5 or maybe an M4. The M3 washers are about the size of the bolt head and might also pull through. Using an M3.5 or M4 will provide more surface area for contact with the TPU. You want something large enough that it will not pull through the TPU. You need something that is large enough to prevent sinking into the TPU. A single M3 washer might not be wide enough to be effective. Another option would be to make a plate that spans both bolts (I would still use am M3 washer). A lot different material could be used depending on what you have and what you can get. You would need a drill and 3mm bit. Material options include, but are not limited to, the following: 1) Carbon Fiber sheets 2) Fiberglass Sheets 3) Copper or brass sheets 4) Heavy plastic This option does require a bit of work. For Me... Since I already stock all of the washers and material needed, I would likely make a brace plate {since I know it will NOT pull through}, drill M3 holes, and use M3 washers on top. For this application, I would likely use either Fiberglass or Heavy plastic; make the plate large enough that it is much larger than the M3 bolt; basically, as large as I could and still be able to fit it in there. It's too complicated in that way I will search for M3 or 3.5 -4 washers but at the moment looks enough fine with that m5 washers : But i don't understand how much i have to compress it to see if these 12mm screws can be fine even using the tpu mount ? i also put a washers to the nut to avoid that it broke the tpu (even if when i will mount it on the frame will not be required i think): • Posts: 5,935 Threads: 47 Likes Received: 2,790 in 2,252 posts Likes Given: 7,730 Joined: Jul 2019 Reputation: 97 Hi Rosssiiii, That looks fine. The washer that you used is big enough. It looks good. I would not worry about the compression nor precisely how tight the bolt is. Just tighten it enough so that there is reasonable compression on the TPU. The TPU acts as a locker and will prevent the nut from coming loose. The bolts look plenty long enough. It will be fine. When bolting TPU like that, the bolt will not become "tight" as it does when bolting solid objects. Besides, you want a little bit of flex room in the TPU. Good Job. Posts: 664 Threads: 121 Likes Received: 24 in 23 posts Likes Given: 490 Joined: Apr 2021 Reputation: 0 29-Nov-2021, 02:46 PM (This post was last modified: 29-Nov-2021, 02:46 PM by Rosssiiii.) (29-Nov-2021, 01:17 PM)iFly4rotors Wrote: Hi Rosssiiii, That looks fine. The washer that you used is big enough. It looks good. I would not worry about the compression nor precisely how tight the bolt is. Just tighten it enough so that there is reasonable compression on the TPU. The TPU acts as a locker and will prevent the nut from coming loose. The bolts look plenty long enough. It will be fine. When bolting TPU like that, the bolt will not become "tight" as it does when bolting solid objects. Besides, you want a little bit of flex room in the TPU. Good Job. Hello thanks for reply to you too i have compressed like that: https://youtu.be/L93ajr4U_D4?list=PLbknh...y6MniQ&t=4 as you can see in this other movie it is alredy tight, it's okay or is it already too much? • Posts: 6,132 Threads: 172 Likes Received: 2,293 in 1,840 posts Likes Given: 4,743 Joined: Feb 2019 Reputation: 103 you cant tighten it too much, therefor the washer. to tight will be if the edge of the washer would cut into the tpu from tightening... looks tight on the image. • Posts: 5,935 Threads: 47 Likes Received: 2,790 in 2,252 posts Likes Given: 7,730 Joined: Jul 2019 Reputation: 97 30-Nov-2021, 12:06 AM (This post was last modified: 30-Nov-2021, 12:07 AM by iFly4rotors.) Hi Rosssiiii, In my opinion, the one on the left in the video is too tight, the one on the right looks about right. You want to still have a little bit of flex even when tightened. With a large washer like you are using, you really only need a little bit of compression. As mentioned, the compression of the TPU will put enough pressure on the bolt that it will not come loose; sort of like a split lock washer. |