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Old Nov 03, 2012, 04:05 PM
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Joined Jan 2012
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Hi,

There's so many posts to read, so i'll just ask....

I'm building a z2 now. Will fpv equip it.
I already have the ritewing powerset.

Im wondering if i am to go for 3s or 4s setup.
Im also wondering what prop to use.

I am no speed freak, but i want enough power to launch it without shitting my pants every time.
What i want more than all is long flight times.

I have read something about geared motors for really long flight-times?
I will be happy to buy a new power-system if someone can recomend what to get for long-hauls.

I also appreciate recomendations regarding 3s or 4s on the ritewing motor, and props to go with it.

Thanks,
kevin
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Old Nov 03, 2012, 05:11 PM
Some call me the other guy!
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Milwaukie , Oregon
Joined Feb 2003
4,488 Posts
For a geared setup, I would look at motors in this size!
36 - 40mm 3000 KV for 4S setup maybe a little lower.
Or 3S A KV of 4000KV.
I have run a bunch of geared setup.
Himax has a 36mm motor with 3300-3600kv, that is a beast!
But I am sure you could do it for a lot cheaper!
I think I ran a 11" prop with that motor and a 2.31:1 ratio!
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Old Nov 03, 2012, 07:53 PM
Mum is the word!
Joined Jun 2003
6,791 Posts
My setup is great, it very efficient and reliable.
I have tested numerous geared setups to find no real answer to meet all the requirements.
Gear boxes are not reliable if they are cheap, and they are still questionable even if they are the high dollar versions .
We have seen very low loiter and cruising speed amp draw with my outrunners.
The last thing you want is a worn gearbox failing on you when you are miles from home.
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Last edited by klique; Nov 04, 2012 at 01:31 AM.
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Old Nov 04, 2012, 01:24 AM
never mind the boll⁣⁣⁣ocks
brosius85's Avatar
Australia, NSW
Joined Dec 2010
1,256 Posts
kevin- if you have the ritwing motor and esc then go for 4s and a 10x5, it wil have about 1000w. it will be easy to launch and do about 100mph

you need a seperate RX battery or UBEC if running 4s.

if you want even more thrust with less speed go for 3s and an 11x5, but that makes the prop more likely to cut your hand (because its that much bigger)
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Old Nov 04, 2012, 02:25 AM
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United States, OR, Portland
Joined Aug 2012
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Quote:
Originally Posted by DoctorAudio View Post
Was you In tigard?
Near Cook Park?
There is only 4 substations in this area in an open area!
It is pretty close!
I am not 100 % but Give me a west or east I it can only be one of those!
North West!
Huge sport wear company..., ring any bells?
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Old Nov 04, 2012, 06:25 PM
Some call me the other guy!
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Milwaukie , Oregon
Joined Feb 2003
4,488 Posts
haha i was way off.
I am going flying in 20 mins
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Old Nov 10, 2012, 07:02 AM
LSF - IV
Hostage-46's Avatar
United States, TX, Highland Village
Joined Jan 2003
3,173 Posts
TL 50 Sloper

Hey Guys,

I'm finally getting around to building the two TL 50's Chris cut for me last year.

These will be very light slope/combat ships.

what's a good CG for a slope version TL 50?
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Old Nov 10, 2012, 05:00 PM
never mind the boll⁣⁣⁣ocks
brosius85's Avatar
Australia, NSW
Joined Dec 2010
1,256 Posts
page 1 of this thread indicates 8" from the nose for CG of the 50" cg does not change weather powered or not, unless i am missing something...

your own preference may change how you like the cg
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Old Nov 10, 2012, 06:11 PM
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Canada, BC, Vancouver
Joined Feb 2012
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Quote:
Originally Posted by brosius85 View Post
kevin- if you have the ritwing motor and esc then go for 4s and a 10x5, it wil have about 1000w. it will be easy to launch and do about 100mph

you need a seperate RX battery or UBEC if running 4s.

if you want even more thrust with less speed go for 3s and an 11x5, but that makes the prop more likely to cut your hand (because its that much bigger)
ridiculous lol I cant wait anymore to fly this damn thing.... Cmon denmark post and get my tx in for repair
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Old Nov 10, 2012, 06:29 PM
LSF - IV
Hostage-46's Avatar
United States, TX, Highland Village
Joined Jan 2003
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Quote:
Originally Posted by brosius85 View Post
page 1 of this thread indicates 8" from the nose for CG of the 50" cg does not change weather powered or not, unless i am missing something...

your own preference may change how you like the cg
Thanks, glider guiders typically fly a further aft CG, good place to start....
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Old Nov 11, 2012, 11:47 AM
Mum is the word!
Joined Jun 2003
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Not usually on flying wings.
Quote:
Originally Posted by Hostage-46 View Post
Thanks, glider guiders typically fly a further aft CG, good place to start....
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Old Nov 11, 2012, 01:31 PM
LSF - IV
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United States, TX, Highland Village
Joined Jan 2003
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Thanks guys... good to go
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Old Nov 11, 2012, 04:01 PM
Never trust laughing dolphins
Joined Feb 2011
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Quote:
Originally Posted by brosius85 View Post
page 1 of this thread indicates 8" from the nose for CG of the 50" cg does not change weather powered or not, unless i am missing something...

your own preference may change how you like the cg
I beg to differ, getting the correct CG has extremely little to do with preference.

If you want a plane to have a downward or upward tendency all by itself, for whatever reason, it's clearly much better to just dial in some trims.

But isn't everyone looking for the best and most predictable performance with no tendency to stall, loop or whatever when you're not giving any stick inputs?

Yes, some gliders fly better with some nose weight, but that's mainly to deal with stronger winds and the fact that they should maintain speed when they're not using a motor. In many cases the actual CG does not really change or it will also start to misbehave and do all kinds of unwanted stall moves.

Anyhow, enough of me being a wisecrack about it, but ESPECIALLY with wings, the center of gravity should be spot on exactly where it is designed to be.
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Old Nov 11, 2012, 05:08 PM
never mind the boll⁣⁣⁣ocks
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Australia, NSW
Joined Dec 2010
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i prefer a nose heavy CG. sue me.it may not be "correct", but it flies nicer to my tastes
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Old Nov 12, 2012, 01:53 AM
Never trust laughing dolphins
Joined Feb 2011
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Quote:
Originally Posted by brosius85 View Post
i prefer a nose heavy CG. sue me.it may not be "correct", but it flies nicer to my tastes
I understand, but having a bad CG can make for an inefficient and less controllable plane. I would understand if you'd simply use trims though. Then again in strong wind, nose weight might be preferrable.
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