HobbyKing.com New Products Flash Sale
Reply
Thread Tools
Old Oct 02, 2011, 12:22 PM
Registered User
drmgcm's Avatar
Cayman Islands, Grand Cayman, Patricks Island
Joined Nov 2005
624 Posts
Another Video

Hi Guys,

Did another vid yesterday, and the sun was shining for a change. This is very addictive.

All the best

Danny

Scarab, LOS 2, Quad Multicopter, With Paris V4 Board. (3 min 36 sec)
drmgcm is offline Find More Posts by drmgcm
Reply With Quote
Sign up now
to remove ads between posts
Old Oct 02, 2011, 07:30 PM
MultiCopterPilot & Film Maker
crazyj's Avatar
United States, CA, San Ramon
Joined Oct 2002
2,545 Posts
Quote:
Originally Posted by drmgcm View Post
Hi Guys,

Did another vid yesterday, and the sun was shining for a change. This is very addictive.

All the best

Danny

http://youtu.be/qGI7wKf6XmI
Nice going Danny. Looks like the cows don't mind the Scarab flying near their behinds!

What's next?
crazyj is offline Find More Posts by crazyj
Reply With Quote
Old Oct 02, 2011, 07:33 PM
MultiCopterPilot & Film Maker
crazyj's Avatar
United States, CA, San Ramon
Joined Oct 2002
2,545 Posts
OK, before watching this video please understand a few things:

1) I've only been flying multi-rotor copters for maybe 6 months
2) I'm not a heli pilot
3) I'm human
4) Things can fail

Now ENJOY my mistakes and try to count how many times I've had to rebuild my Scarabs. One last thing to note, I've really only needed props and booms. The Scarab is a tough and well designed machine.

MWC Scarab 12 and Carbon Scarab QuadOcta - Bloopers (1 min 50 sec)
crazyj is offline Find More Posts by crazyj
Reply With Quote
Old Oct 02, 2011, 08:20 PM
manual flying apologist
Adidas4275's Avatar
United States, CA, Fresno
Joined Mar 2011
6,944 Posts
Quote:
Originally Posted by crazyj View Post
OK, before watching this video please understand a few things:

1) I've only been flying multi-rotor copters for maybe 6 months
2) I'm not a heli pilot
3) I'm human
4) Things can fail

Now ENJOY my mistakes and try to count how many times I've had to rebuild my Scarabs. One last thing to note, I've really only needed props and booms. The Scarab is a tough and well designed machine.

http://www.youtube.com/watch?v=Lgvz2Uuk8lw&h=1

great to see
Adidas4275 is offline Find More Posts by Adidas4275
Reply With Quote
Old Oct 02, 2011, 11:20 PM
Registered User
drmgcm's Avatar
Cayman Islands, Grand Cayman, Patricks Island
Joined Nov 2005
624 Posts
Quote:
Originally Posted by crazyj View Post
Nice going Danny. Looks like the cows don't mind the Scarab flying near their behinds!

What's next?
Hi Jason,

Thanks man, well i've got a bit of vid of the flying site and the guys from the today, hope to put that up in the next day.

Danny
drmgcm is offline Find More Posts by drmgcm
Reply With Quote
Old Oct 03, 2011, 08:49 AM
Registered User
drmgcm's Avatar
Cayman Islands, Grand Cayman, Patricks Island
Joined Nov 2005
624 Posts
Quote:
Originally Posted by crazyj View Post
OK, before watching this video please understand a few things:

1) I've only been flying multi-rotor copters for maybe 6 months
2) I'm not a heli pilot
3) I'm human
4) Things can fail

Now ENJOY my mistakes and try to count how many times I've had to rebuild my Scarabs. One last thing to note, I've really only needed props and booms. The Scarab is a tough and well designed machine.

http://www.youtube.com/watch?v=Lgvz2Uuk8lw&hd=1
Hi Jason,

this was excellent, it's always great to see all the trials and tribulations it takes, before you get excellent videos like yours.

All the best

Danny
drmgcm is offline Find More Posts by drmgcm
Reply With Quote
Old Oct 04, 2011, 05:22 AM
I failed linkage geometry
salisbug's Avatar
Melbourne, Australia
Joined Jun 2002
4,232 Posts
From a quad beginner:

Scarab #2 (4 min 7 sec)
salisbug is offline Find More Posts by salisbug
Reply With Quote
Old Oct 04, 2011, 11:01 AM
MultiCopterPilot & Film Maker
crazyj's Avatar
United States, CA, San Ramon
Joined Oct 2002
2,545 Posts
Quote:
Originally Posted by salisbug View Post
Looked like a good flight until you landed it, upside down! Still, it seemed to have survived.

crazyj is offline Find More Posts by crazyj
Reply With Quote
Old Oct 04, 2011, 01:38 PM
Registered User
France, IdF, Châtenay-Malabry
Joined Aug 2010
287 Posts
Hello,

I have not posted a video for long but the scarab flies Fpv often.

Since my last video at the Lions mound in Waterloo, Belgium I have been struggling to get rid of that gello. I reversed my motors axis to have these Gaui motors under the motor mounts which reduced the vibrations at max throttle; then I carefully balanced all my props using a magnetic balancer, working on each blades and the central hub. The scarab flies much better, especially in rapis throttle variations where I don't get anymore strong vibrations but... The gello is still there !

I assume, I have to move to dynamic balancing now. Could someone provide guidance or a link to the best posts describing the process? I assume there are different methods, are there any that do not require additional equipment, which is the best?

Thanks

Gregory
glambert is offline Find More Posts by glambert
Reply With Quote
Old Oct 04, 2011, 02:22 PM
Registered User
drmgcm's Avatar
Cayman Islands, Grand Cayman, Patricks Island
Joined Nov 2005
624 Posts
A Flight At The Flying Field

Hi Guys,

This was Sunday just gone at the flying field.

Total fun.

Danny

http://youtu.be/Al25RtzVsIU
drmgcm is offline Find More Posts by drmgcm
Reply With Quote
Old Oct 04, 2011, 02:27 PM
manual flying apologist
Adidas4275's Avatar
United States, CA, Fresno
Joined Mar 2011
6,944 Posts
Quote:
Originally Posted by glambert View Post
Hello,

I have not posted a video for long but the scarab flies Fpv often.

Since my last video at the Lions mound in Waterloo, Belgium I have been struggling to get rid of that gello. I reversed my motors axis to have these Gaui motors under the motor mounts which reduced the vibrations at max throttle; then I carefully balanced all my props using a magnetic balancer, working on each blades and the central hub. The scarab flies much better, especially in rapis throttle variations where I don't get anymore strong vibrations but... The gello is still there !

I assume, I have to move to dynamic balancing now. Could someone provide guidance or a link to the best posts describing the process? I assume there are different methods, are there any that do not require additional equipment, which is the best?

Thanks

Gregory
do you have the camera mounted directly to the frame?

I find the OEM gopro case removes some vibrations.

I have mine mounted on a fiberglass plate which is attached to the frame with rubber isolators.

I am also testing a mount that uses that gel that drummers use to minimize vibrations.

crazyj has his hard mounted with no jello with 3 blade props..... are you using 2 blade props?
Adidas4275 is offline Find More Posts by Adidas4275
Reply With Quote
Old Oct 04, 2011, 03:14 PM
Registered User
France, IdF, Châtenay-Malabry
Joined Aug 2010
287 Posts
Quote:
Originally Posted by Adidas4275 View Post
do you have the camera mounted directly to the frame?

I find the OEM gopro case removes some vibrations.

I have mine mounted on a fiberglass plate which is attached to the frame with rubber isolators.

I am also testing a mount that uses that gel that drummers use to minimize vibrations.

crazyj has his hard mounted with no jello with 3 blade props..... are you using 2 blade props?
Thanks Adidas4275,

I use the OEM Gopro case. I initially used the gopro 3M mounts on the lower plate of the scarab, it is true that I never bothered with prop balancing and had very little gello at this time. Picture at the beginning of this video:
http://www.youtube.com/watch?v=MeGOLu0LsS8

When I switched to the octa frame, I started to use the gopro mount provided by mulitwiicopter which is a hard mount - I think Jason uses this one. Picture at the beginning of this video (I had not done any balancing at this time):
http://www.youtube.com/watch?v=1rvzAXR8Bs4

Regarding the blades, I am on 3S batteries. I use 2 blades, either 10' or 8' props. I think I get more vibrations and gello with the 10' props. I have ordered 3 blades props to do some testing.

Maybe I should go back to the original gopro mount under my frame using the 3M tape that has some kind of foam under and may isolate. Now that my props are well static balanced, maybe the result will be ok.

What about dynamic balancing? Did someone found it useful?

Gregory
glambert is offline Find More Posts by glambert
Reply With Quote
Old Oct 04, 2011, 03:42 PM
manual flying apologist
Adidas4275's Avatar
United States, CA, Fresno
Joined Mar 2011
6,944 Posts
i find the KEDA motors to be in good balance....

i have not used the scarab hard mount, but it seems that it would be easy to get some vibrations to the camera with it....

i know others have made vibration isolating motor mounts that seem like a cool idea as well..

but all the high-end gimbals use vibration isolation or dampening
Adidas4275 is offline Find More Posts by Adidas4275
Reply With Quote
Old Oct 04, 2011, 07:14 PM
Registered User
drmgcm's Avatar
Cayman Islands, Grand Cayman, Patricks Island
Joined Nov 2005
624 Posts
Great flight there till the dumb thumbs, happens to the best of us.

Just a tip, i used to have nerf balls on my gear legs, however i found they added to much weight and created a lot of drag, even if you don't use your Scarab for AP, AV or FPV your quad will thank you for taking the balls off.

All the best

Danny



Quote:
Originally Posted by salisbug View Post
drmgcm is offline Find More Posts by drmgcm
Reply With Quote
Old Oct 04, 2011, 08:51 PM
I failed linkage geometry
salisbug's Avatar
Melbourne, Australia
Joined Jun 2002
4,232 Posts
Just glancing over at the airframe last night I noticed that one of the booms was a bit droopy (I bet we've all been there before).

A closer look revealed 2 bent booms . Well, it did go in at a fair rate of knots. Just as well they sell a crash kit.

May need a few at this rate......
salisbug is offline Find More Posts by salisbug
Reply With Quote
Reply


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Build Log Twisted Hobbys - Telink 43" SU 29 - Build, Fly, Vid hercdriver7777 3D Foamies 632 Yesterday 07:38 PM
Discussion Radical RC Stick 400 Build Thread~~~Now with Video Carnifax Electric Plane Talk 184 Jul 20, 2014 12:34 PM
Question Skywalker 3 Build Advice and Eventual Build Thread! Ecibob FPV Talk 2 May 01, 2011 04:46 PM
Discussion Easyglider Build Thread (Help wanted) worzul Foamies (Kits) 2 Mar 18, 2011 07:45 AM