Lumenier RB2205C-12 2400KV SKITZO Ceramic Bearing Motor
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Old Nov 18, 2013, 02:03 PM
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New Product

Fully Protected Props -- Safeflight Copters SFC4410 Quad Airframe


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UPDATE 4/26/14 -- This air frame kit is not in production any longer, and there are no parts or kits left in stock no matter how nicely or repeatedly you ask . Everything we produced, we sold.

We wish very much we could have stayed in production and brought our other airframes to market. Thanks to all those that took to the skies with us.

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The last half of original thread contains a lot of good information and can be found here for reference. Please note the beloved "Star Trek" model did not make it to production, hence why we're starting this new thread specific to this frame.


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Last edited by sfc; Apr 26, 2014 at 12:35 PM.
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Old Nov 18, 2013, 02:08 PM
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Re-posting on this new thread...

Frame arrived today, well packaged and all in good shape. about what I expected look and feel wise based on pictures and comments to date. Plastic may be a bit lighter than I was expecting. Will have to see how it feels built out and how durable it will be.



https://plus.google.com/u/0/photos/1...74648963819377
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Old Nov 18, 2013, 02:22 PM
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Thanks Flitelab -- Glad it got to you in good shape!

Erik
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Old Nov 18, 2013, 02:30 PM
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In your listed setup on website, I assume this was a 4S configuration correct?
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Old Nov 18, 2013, 03:02 PM
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Quote:
Originally Posted by flitelab View Post
In your listed setup on website, I assume this was a 4S configuration correct?
Yes, 4S is preferred with the low kv motors

Edit: I have updated the site to be a little more clear about that
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Old Nov 18, 2013, 03:49 PM
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4s are essentiel with low kv motors and 10" propellers. 650 KV motors works usually with big slowfly props and 3 cells lipo, to reduce the props diameter you have to up the number of cells. You could optimize the diameter using tjhree blades props (abs or wood, i never found carbon ones), the third reduce the diameter by 1" (three blades 10" are same as 11" props classic), a bit hard to balance than two blades.
Old Nov 18, 2013, 04:38 PM
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Quote:
Originally Posted by maxxhimum View Post
4s are essentiel with low kv motors and 10" propellers. 650 KV motors works usually with big slowfly props and 3 cells lipo, to reduce the props diameter you have to up the number of cells. You could optimize the diameter using tjhree blades props (abs or wood, i never found carbon ones), the third reduce the diameter by 1" (three blades 10" are same as 11" props classic), a bit hard to balance than two blades.
Thanks, I'm well aware, just wanted to verify if they were using 4,5, or 6s on that setup. For 650kv I think 4s is a bit on the low side. I run 12x4 770kv motors on 4s on some hex and octo builds.
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Old Nov 18, 2013, 04:44 PM
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Multirotor Builder!!!!!
Ok I am here. LOL.. also I have the thread I started for my Build and review of the SFC frame.

https://www.rcgroups.com/forums/show....php?t=2037871
Last edited by tc3wins; Nov 19, 2013 at 04:33 AM.
Old Nov 18, 2013, 05:24 PM
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Someone help me


What do you think about this product is it the same as recommended by SFC?
Is just 20a and motors are - RC Timer 4215(3507) 650KV

Maybe could be burned because is just 20a

What do you think?

http://www.hobbyking.com/hobbyking/s...rch=Esc%20quat
Old Nov 18, 2013, 05:40 PM
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Quote:
Originally Posted by kathe View Post
What do you think about this product is it the same as recommended by SFC?
Is just 20a and motors are - RC Timer 4215(3507) 650KV

Maybe could be burned because is just 20a

What do you think?

http://www.hobbyking.com/hobbyking/s...rch=Esc%20quat
Hi kathe -- We've not tried that but the 650kv motors @ 4s using our general setup should not be pulling anywhere near 20 amps (each).

Flitelab -- 4S is as high as we've gone with this quad since we mainly run the Quattro brick. If you run higher please let us know your findings, if you don't mind.


Quote:
Originally Posted by tc3wins View Post
Ok I am here. LOL.. also I have the thread I started for my Build and review of the SFC frame.
Can you edit your post and add the link?

Sorry for moving everyone over here, but it was causing some confusion when new people first see our original thread with James T. Kirk's quad on the front page instead of the current SFC4410 quad.
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Old Nov 18, 2013, 07:07 PM
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4S , 5S, maybe even 6S...


For those who are feeling a little adventurous:
http://www.rc-fans88.com/goods.php?id=1333
It can handle 6 S.
I plan to fly this rig at 5S because I already have a few batteries lying around.
Will try a 6S as well just for kicks.
Should be ready right around Xmas.
Old Nov 19, 2013, 03:21 AM
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Quote:
Originally Posted by flitelab View Post
Thanks, I'm well aware, just wanted to verify if they were using 4,5, or 6s on that setup. For 650kv I think 4s is a bit on the low side. I run 12x4 770kv motors on 4s on some hex and octo builds.

I think so, it was just for those not involved in. 5s or 6s may fit, xcopter calc may give us good information.
Old Nov 19, 2013, 05:33 AM
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xcopter calc confirm possibility to fly 17mn with 5s 4000 mah three blades props and mt3506 650 kv. Hover at 36% throttle that is the better news, it predict good reactivity.
Great idea flitelab, i'm too focus on 4s and you free my mind.
Old Nov 19, 2013, 06:23 AM
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Mmmmmmm!
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Oh ho, my frame just landed in Malmö. I should have it in two days or so. Time to prepare the ESCs and whatnot, they need longer leads.
Old Nov 19, 2013, 01:23 PM
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Got the frame yesterday


Hi,

Frame received yesterday. First impression, I like the very solid feeling carbon fiber tubes. The plastic grills, feel flexible, yet quite solid. Like flitelab said, the plastic seems thin/light in some places, but I assume that it strategic to minimize the overall weight. The core areas seem to be solid and reinforced.

Anxious to get this thing flying! Now if only those motors could arrive soon :P

Q: For the RCTIMER 650kv motors, anyone know what size screws are used to mount to the frame (3mm)? Reason why I ask, is, I took a look at the local discount hardware store and they didn't have any metric screws under 4mm. I might actually have to order the mounting screws.

Cheers,
Eric


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