CLUBS: Just our team

Started by bfeist, May 06, 2013, 03:10:01 PM

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Ededge2002

By the time you add the slip of the prop and the drag of the airframe my guess is my plane is near 100mph but we could do a couple timed runs to figure it out.
Yea 400W/lb should about do it.. But wouldn't a nice round 500 be better?

wollins

#16
Correction ... my weights are:

With 1300mah TP 45/90C packs: 16.60ozs
With 1800 Zippy 20c packs: 17.35ozs


Colin
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Three things are certain ... Death, Taxes and CRASHIN'!

Andy Hoffer

Quote from: wollins on May 28, 2013, 09:14:48 AM
Quote from: bfeist on May 27, 2013, 06:13:08 PM
AUW of the Naked Nooner is 517g. But I could put a 1300mah battery in it to reduce it quite a bit (but I'd have to find one and buy one). Using a 2100 20C right now.

Thanks Ben ... my weights are:
With 1300mah TP 45/90C packs: 16.25ozs
With 1800 Zippy 20c packs: 16.90ozs

The plan is to use the TP packs for my "racing" packs and the Zippys for my "sport" packs.   Pcalc
Numbers with my Mega 16/15/3 3000kv and a 4.5x4.5 prop are:
24.3A
30259rpm
128 pitch speed
36.8ozs thrust
270 watts
Might have to prop down some!  ;D   Will check "real" numbers later.
Colin

I smell ESC smoke !! :)

wollins

With 1300mah TP 45/90C packs: 24.89A for 280w with TGS Sport 4.5x4.5E Precision propeller
With 1800 Zippy 20c packs: 17.75A for 190w with TGS Sport 4.5x4.5E Precision propeller

So ... will have to prop down when racing since the TP packs are my "racing" packs. ;)

Colin 


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Three things are certain ... Death, Taxes and CRASHIN'!

Andy Hoffer

Quote from: wollins on June 01, 2013, 12:20:16 PM
With 1300mah TP 45/90C packs: 24.89A for 280w with TGS Sport 4.5x4.5E Precision propeller
With 1800 Zippy 20c packs: 17.75A for 190w with TGS Sport 4.5x4.5E Precision propeller

So ... will have to prop down when racing since the TP packs are my "racing" packs. ;)

Colin

That's quite a difference in output between the two packs with the same prop.  Did you happens to note the voltage under load for each test.

Andy

wollins

Around 11.2V for both

Colin
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Three things are certain ... Death, Taxes and CRASHIN'!

Ededge2002

Reading a few posts it seems I will be the only one racing this weekend. I understand obligations are in the way for Ben and Colin. I believe Andy is not completed his plane. 
Yea 400W/lb should about do it.. But wouldn't a nice round 500 be better?

wollins

Yeah my daughter's b/day party is in the morning so Im hoping to get there for the warbirds portion of the day.
Colin
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Three things are certain ... Death, Taxes and CRASHIN'!

bfeist

My son's baseball tournament is this weekend. If he is eliminated tomorrow I might be able to make it out Sunday. Is Sunday the race day? I can't remember.

Andy Hoffer

Quote from: bfeist on June 07, 2013, 06:17:37 PM
My son's baseball tournament is this weekend. If he is eliminated tomorrow I might be able to make it out Sunday. Is Sunday the race day? I can't remember.

Sunday June 9 is race day.

http://temac.ca/smf/index.php/topic,4056.msg22197.html#msg22197


bfeist

Hi guys. I won't be back in town in time for the races today. Looks like great weather. Go get em Ed!

bfeist

Quote from: wollins on May 28, 2013, 09:14:48 AM
Quote from: bfeist on May 27, 2013, 06:13:08 PM
AUW of the Naked Nooner is 517g. But I could put a 1300mah battery in it to reduce it quite a bit (but I'd have to find one and buy one). Using a 2100 20C right now.

Thanks Ben ... my weights are:
With 1300mah TP 45/90C packs: 16.25ozs
With 1800 Zippy 20c packs: 16.90ozs

The plan is to use the TP packs for my "racing" packs and the Zippys for my "sport" packs.   Pcalc
Numbers with my Mega 16/15/3 3000kv and a 4.5x4.5 prop are:
24.3A
30259rpm
128 pitch speed
36.8ozs thrust
270 watts
Might have to prop down some!  ;D   Will check "real" numbers later.
Colin

I put a 1300mah battery in the Naked Nooner. It's 477g AUW now.

Ededge2002

Great news your batteries arrived. Now we just have to pressure you into flying it lol. I think the next race is in two weeks!
Yea 400W/lb should about do it.. But wouldn't a nice round 500 be better?

bfeist

I'll maiden it at Kingston. I think I read that you're not planning on going. I highly recommend it if you can get away.

Ben

Ededge2002

I've heard good things of Kingston but I will be camping Friday till Wednesday.  Have a good time at the event.
Yea 400W/lb should about do it.. But wouldn't a nice round 500 be better?