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Old Mar 02, 2013, 02:40 PM
It's a gremlin, so what.
flypig's Avatar
peterborough
Joined Dec 2007
202 Posts
Quote:
Originally Posted by nofreee View Post
You are experiencing prop stall. With higher pitch props, they don't really "bite" until they get enough air passing through them. Lower pitch will have more static thrust and give you the low end grunt at the expense of top end speed.
Prop stall eh, well if it has a name, I can blame it.

Spectator " why did you crash it, didn't even get it in the air? "

My reply " classic Prop Stall, watcha gonna do? "
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Old Mar 02, 2013, 02:52 PM
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feefo's Avatar
Staffs, UK
Joined Apr 2009
3,603 Posts
Quote:
Originally Posted by flypig View Post
Prop stall eh, well if it has a name, I can blame it.

Spectator " why did you crash it, didn't even get it in the air? "

My reply " classic Prop Stall, watcha gonna do? "
Lol, me and my friends have a 'little book of excuses', it covers a variety of situations. In fact, I've never seen something happen that wasn't covered by that book, amazing TBH.
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Old Mar 02, 2013, 04:04 PM
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MRGTX's Avatar
United States, CT
Joined Aug 2005
1,947 Posts
Quote:
Originally Posted by flypig View Post
there was some instant pucker factor from the sheer mass of it
that's what she said!

Cool looking motor....keep us posted,
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Old Mar 02, 2013, 07:47 PM
This is kid stuff.
Mazzepa1's Avatar
USA, AR, Harrison
Joined Aug 2010
902 Posts
Quote:
Originally Posted by flypig View Post
Prop stall eh, well if it has a name, I can blame it.

Spectator " why did you crash it, didn't even get it in the air? "

My reply " classic Prop Stall, watcha gonna do? "
[QUOTE=MRGTX;24301425] that's what she said!

Not one, but 2 lol's. You guys are in rare form today, glad I tuned in.
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Old Mar 02, 2013, 07:48 PM
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Joined Oct 2007
234 Posts
Sun Launch

I can remember a perfect launch ...everything was just right..the plane shot away into the sky never to be seen again until a thud sounded off a few dozen feet way...thats a SUN Launch
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Old Mar 02, 2013, 08:02 PM
This is kid stuff.
Mazzepa1's Avatar
USA, AR, Harrison
Joined Aug 2010
902 Posts
Quote:
Originally Posted by mr.sand View Post
I can remember a perfect launch ...everything was just right..the plane shot away into the sky never to be seen again until a thud sounded off a few dozen feet way...thats a SUN Launch
Har-de-har-har! You misfortune is our amusement.
I love it, keep 'em coming, boys.
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Old Mar 03, 2013, 03:19 PM
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Joined Sep 2008
85 Posts
Anyone know what kind of plug is attached on the end of my MULTIcont ESC from MPX? its green and alien to me..
And i ask again? Anyone got any experience with prop saver on this one?
Thanx for ur answers!
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Old Mar 03, 2013, 04:00 PM
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feefo's Avatar
Staffs, UK
Joined Apr 2009
3,603 Posts
Looks like a MPX 6 pin connector http://www.electricwingman.com/multi...onnectors.aspx

Personally I'd desolder it and use something else, easiest thing would be to change it to whatever your batteries have on, XT60's etc.
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Old Mar 03, 2013, 06:15 PM
United States, CA, Santa Rosa
Joined Mar 2011
883 Posts
Maidened my dog yesterday but it didn't go as well as I had hoped. Got her launched easy enough then one of my aileron servos developed a random twitch. She would fly nice for a bit then mad wing wobble. Got her down for a safe landing, but I need to replace that servo.
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Old Mar 04, 2013, 02:24 AM
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Joined Sep 2008
85 Posts
Thx Feefo, ive bought new deans connectors for it. Also bought half oz sq yard fibrecloth and some epoxy "finish 20 min" for glassing it. Is wbpu to prefer when glassing?
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Old Mar 04, 2013, 04:03 AM
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United States, NY, Schenectady
Joined Sep 2009
240 Posts
Quote:
Originally Posted by asosestrom View Post
Maidened my dog yesterday but it didn't go as well as I had hoped. Got her launched easy enough then one of my aileron servos developed a random twitch. She would fly nice for a bit then mad wing wobble. Got her down for a safe landing, but I need to replace that servo.
What type of servo?
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Old Mar 04, 2013, 06:58 AM
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Joined Sep 2008
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Read up on glassing and now got both wbpu and epoxy on the way. Tempting to use the epoxy with glassfibercloth for the front fuselage, front of wings and underneath fuselage. Then maybe wbpu for rest if needed.. Any experience on using both on the same plane? I want a sturdy plane, but I will be careful with adding too much weight.

Last time i did a plane i bought silk in a shop and used some RC lacker bought online. i cut the silk in squares and made a patchwork on the plane. Looked really cool like pieces of metal plates. As long as they overlap i think the strength will not be in danger.. and easier than fitting a large piece of cloth?

What u guys think?
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Old Mar 04, 2013, 09:00 AM
United States, CA, Santa Rosa
Joined Mar 2011
883 Posts
Quote:
Originally Posted by Buster1000 View Post
What type of servo?

I use TH DMG65 digital metal gear servos. I get them from Twisted Hobbies and have used them with good success on my TH 3D planes.
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Old Mar 05, 2013, 10:18 AM
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Finlande
Joined Dec 2007
422 Posts
Hey guys.

I thought I could post about my setup which is a bit different from usual .

I am using this NTM 35-36-1800 motor on my Dog with a cheapo 70A ESC:

http://www.hobbyking.com/hobbyking/s...00Kv_875w.html

with a Turnigy 4S-2200-40C on an APC 7x7sport prop, I get as static results

62,2A for 888 W at 14.3V

The plane flys really beautifully and is pretty fast . I don't know the speed but it feels that it could almost compare with my 1100W Funjet , at least during the first passes with full loaded battery .
Motor comes down perfectly cold but it is still freezing a bit outside

I first flew my dog on a 115g -1100KV motor on 4 cells with a 9x7.5 prop .
I thought it was fast and I liked the awesome vertical pull with a 9 inches prop .

For sure I have lost a lot of that thrust with a 7 inches prop and I now need to launch at full throttle , but man, it is really fast . Not sure but if you wanna stay cheap on the motor , this 1800kV motor could be the best one can find .

There is one guy claiming 140mph on a H-King review with same motor on 4 cells and a 7x8 prop .
I think it's a bit exaggerated and shall be more in the 120mph range !

I don't know what you think but I can't say enough good things about thoses NTM motors .
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Old Mar 16, 2013, 11:02 AM
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Joined Oct 2007
234 Posts
motor-plane performance

I have my Turn-3025-1500 on board at the moment. This motor is rated for about 69 amps. The 8x8e was running at 98 amps an 1350 watts...so I backed down to 8x6e and still had mid-90 for amps..the plane is over-proped

So today i tried a 7-5e but i didn't measure it...however the plane was a real no performer in the air...no top end or speed available with topped off 4s 2600amp batt...went back to 8x6e for speed...I need a new prop for this motor any one have a good suggestion...8-4e maybe.....
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