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Futaba-RC . A Main Hobbies . Boca Bearings

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Aerial Photography and Video > Observer camera size
 
 
Angelos
Key Veteran
Location: nr Oxford, OX11, UK

Hello,
If you have an Observer can you please tell me the exact measurements of the camera mount? I need the width of the camera base and the distance of the camera base and the top.

This photo shows which measurements I need:

http://www.model-gadgets.com/tmp/obs.jpg

Many thanks,
Angelos
06-21-2003 09:45 PM
 
 
flyboy
Elite Veteran
Location: California

I don't have mine here.
I will try to get you the measurements tomorrow.
06-22-2003 03:42 AM
 
 
Malorie
Elite Veteran
Location: Paw squared, MI

5 7/8" wide and up to 8 1/2" tall.

You want the CG of the camera on the cross axle which is 4 1/4" from the top of the "U".

Life's a journey, NOT a destination.
06-22-2003 01:35 PM
 
 
Angelos
Key Veteran
Location: nr Oxford, OX11, UK

Thanks for the response. I am designing a very similar mount to go in front of my Raptor 60. I will have to cut away the electronics tray of the Raptor to keep the camera and thus the CoG as close to main shaft as possible. Thus I will have to move RX receiver, battery etc on a plate that I will mount ton the tail boom.

With my current design the U mount is around an inch narrower than the observer. It is just big enough to accommodate a Canon Powershot G3 or a Sony TRV110 camcorder. I guess it is ok as the Raptor is a smaller machine anyway.

The 2mm carbon sheet arrived today so I will cut out the parts tonight. I also have most of the required mechanics including bearings and gears for 5:1 reduction from the servo to the camera pan/tilt axis. I am installing the feedback potentiometer on the pan/tils shafts instead of having it internally in the servo. A trick is to add resistors to the two outside legs of the pot which increases the rotation angle. I have tuned mine for just over 180 degrees rotation. Because of the additional 5:1 gear ratio I measured that it takes around 3 seconds for the camera to move from side to side. I guess this is fine and also helps for smooth position adjustments.

I have plans to fit at least two sets of vibration dumpers (soft and slightly harder ones) at different locations of the fixture. I hope that this will help filter vibrations of both high and low frequencies.

I’ll post some photos as soon as it starts taking shape.

Thanks again,
Angelos
06-26-2003 04:28 PM
 
 
dj_hawaii
Senior Heliman
Location: Formerly Hawaii, now residing in Houston (Katy)TX

My Setup!

This is a home made mount built after seeing pictures of the Observer's mount. I used light weight aluminum and nylon spacers. The gears and servos for the tilting is a setup purchased from www.servocity.com or you can call Bergen and order the servos, pullies and pulley wheel from them. a belt driven setup would pan-n-tilt much smooter than a "geared" setup...hope that helped!!

View my home made mount here: http://www.runryder.com/helicopter/t47516p1/


Bergen Observer | Bergen Gasser | Xcell Gasser & more...
www.RemoteAerialShots.com
06-27-2003 08:01 PM
HOMEPAGE  
 
 
AngelosKey Veteran - Location: nr Oxford, OX11, UK -
Ok, here is the first frame of the camera mount. Designed with CAD software, printed on A4 size sticker which was then applied on the carbon sheet. I removed the areas of the sticker that correspond to unused carbon and then carefully cut out the frame with my hobby drill.








dj_hawaii,
gears are fine as long as they are fine pitch. I have a very nice set from an RC car with virtually no backslash. (95 teetch/19 teeth)

By the way... I am happy to send the CAD files to anyone who wants them. The software to view/print them is free but please wait until I assemble my camera mount to make sure all parts fit together.
06-27-2003 09:56 PM
 
 
AngelosKey Veteran - Location: nr Oxford, OX11, UK -
One more photo!

06-28-2003 12:25 AM
 
 
Twin_squirrel
Senior Heliman
Location: Wiltshire, UK

LOOKS GREAT!!!!


Put me first in line for those CAD files, what a great offer, that's what I love about this hobby, we may not all agree but we are all pretty much on the same wavelength.

Where are you getting that carbon sheet?

Cheers

David
06-28-2003 12:39 AM
HOMEPAGE  
 
 
Angelos
Key Veteran
Location: nr Oxford, OX11, UK

David,

I got a 800mm x 600mm x 2mm panel from Revolution for £150 + £7 postage. It seems a lot of money but a quarter of that (400mm x 300mm) would cost around £40 anyway. Revolution had a few smaller pieces but none of them was large enough.

I was actually thinking to cut the panel to 4 pieces and sell at least two of them for what they cost me but it is a bit of a pain to cut it. Anyway, if you can't find carbon sheet send me a PM.

Cheers,
Angelos
06-28-2003 01:51 AM
 
 
dj_hawaii
Senior Heliman
Location: Formerly Hawaii, now residing in Houston (Katy)TX

Sent me a set also please!!

I like a set of those Cad Drawings also (I'm 2nd in line!)
Jamesfamily@hawaii.rr.com


Bergen Observer | Bergen Gasser | Xcell Gasser & more...
www.RemoteAerialShots.com
06-28-2003 02:20 AM
HOMEPAGE  
 
 
MPA
Elite Veteran
Location: Australia

Angelo, love your work.
Looks better than a bought one.
06-28-2003 07:50 AM
HOMEPAGE  
 
 
Twin_squirrel
Senior Heliman
Location: Wiltshire, UK

WOW, that's a lot of pennies, I hadn't realised it was sooo expensive, worth it though. I bet it will be VERY stiff and pretty light when done.

What bearing blocks are you using?

Loving your work.

d
06-28-2003 09:49 AM
HOMEPAGE  
 
 
Angelos
Key Veteran
Location: nr Oxford, OX11, UK

Twin_squirrel,

The bearing blocks are Hirobo 0402-523 SF Bearing Holder and they are £5 each which is quite expensive considering that I will probably use eight of them in total. To make things worst, the bearings are not included I tried to use of the self parts so that they will be easily available to anyone who wants to make a camera mount. I will post details of all the materials and photos of how all parts fit together.

I calculated that the 2mm think carbon costs exactly £0.20 for every square inch. I must admit that the carbon and parts that I needed cost me much more that I was originally anticipating. I don't intend to start an aerial photography business but I want a high quality mount for my own use. I however hope to do a few jobs to make up for the expensive materials.

-Angelos
06-29-2003 01:47 AM
 
 
AngelosKey Veteran - Location: nr Oxford, OX11, UK -






06-30-2003 09:32 AM
 
 
Twin_squirrel
Senior Heliman
Location: Wiltshire, UK

Beautiful!!
06-30-2003 10:00 AM
HOMEPAGE  
 
 
flyboy
Elite Veteran
Location: California

New hero to add to the ever growing list.

Nice work.
07-02-2003 07:23 PM
 
 
AngelosKey Veteran - Location: nr Oxford, OX11, UK -
Still a lot more to be done but the base of the unit is now ready. Here is a photo. The plate where the camera is mounted is suspended with CSM gyro tape to dump vibrations.

07-04-2003 08:59 PM
 
 
Angelos
Key Veteran
Location: nr Oxford, OX11, UK

Stuart,
I bought an OS70 from Cyberheli to put in my Raptor 60. The TT70 is rubbish. I'm expecting the new engine to arrive any day now. I also got a QUK metal fan. I hope this will solve the vibration problems that I had. The plastic fan was really loose. It probably had 15 degrees play and a few mm vertical between the plastic fan and the aluminium hub. If the Raptor flies well I'll put the camera on this.

-Angelos
07-05-2003 01:07 AM
 
 
dj_hawaii
Senior Heliman
Location: Formerly Hawaii, now residing in Houston (Katy)TX

AWESOME!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Totally AWESOME!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Is it possible that I can get a copy of the schematic (blue print) of the parts and a break-down list of the parts with the cost of each piece and part. I pay for the info if it's a bit too much that I'm asking for. Also would you consider dupilcating another one to sell to me and how much ? Please PM your reply to the last question. Thanks -in-advance


Bergen Observer | Bergen Gasser | Xcell Gasser & more...
www.RemoteAerialShots.com
07-05-2003 05:31 AM
HOMEPAGE  
 
 
AngelosKey Veteran - Location: nr Oxford, OX11, UK -
dj_hawaii,

I will post the CAD files as soon as I finish with my camera mount as I am still making minor changes. For example just last night I changed the coupler the connects the pot shaft on gear. I also need to do the mechanics for pan.

I wouldn't even think of making a second one by hand. The carbon is too messy to work with, the dust flies everywhere in the house and it takes ages to get the frames cut nice. However, I am also building a CNC machine. It would take another 2-3 months until i finish that but then I can cut as many pieces as you like

The most expensive part (after the carbon sheet) is the Hirobo bearing blocks. They cost £5 each and you need 8. Total £40 (around US$60). I hope that when my CNC machine is ready I will be able to cut them for 6mm thick carbon or plastic sheet.

07-05-2003 09:50 AM
 
 
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Aerial Photography and Video > Observer camera size
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