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.

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?

(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

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?

(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

i would suggest to get some m3 spacers

(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 

im sorry, liked to say washer

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. 

(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):

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.

(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?

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.

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.