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Q80 13XS VS 14XS

Old 05-26-2013, 10:10 PM
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Rune
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Default Q80 13XS VS 14XS



Hi
I have a Spark with a 13XS and Jeti Mezon think it maybe use a bit to much power , everything is in good shape (conectors solderings etc etc).
We had a competition this weekend and I discuss it with some off the other guys but it seems that no one have tried both motors on the same setup(plane esc) .
I use a light weight PT 20x13 wich I think is correct or ok, but on one flight P program I use about 3000 Mah and on a flight off 7 min it use around 4200.
I have flown the plane about 80 flights and everything was new from the beginning and it has been like this from start , a friend has almost the same setup (has the spin instead off Mezon) and experience the same.
I was thinking maybe change the 13 to a 14 and use a 21x14 ...any thoughts guys?

Old 05-27-2013, 05:06 AM
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underdw
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Default RE: Q80 13XS VS 14XS

3000mah doesn't seem unreasonable for a P13 flight. I average about 3200 with a completely different system
Old 05-27-2013, 08:53 AM
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Default RE: Q80 13XS VS 14XS

The 13XS is not designed to throw a 21 X 14 and may overload it. The 14XS can throw a prop this big. 3,000 for P is peanuts. I use 3,200 to 3,600 for the new Masters.
Old 05-27-2013, 09:43 AM
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Rune
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Default RE: Q80 13XS VS 14XS

I dont use a 21x14 on the 13xs, but a 20x13.
Old 05-27-2013, 09:49 AM
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Default RE: Q80 13XS VS 14XS

I understand that, but you said you were thinking of running a 21 X 14. The 13XS is designed for a 20 X 13.
Old 05-27-2013, 10:15 AM
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Default RE: Q80 13XS VS 14XS


ORIGINAL: Portlandflyer

I understand that, but you said you were thinking of running a 21 X 14. The 13XS is designed for a 20 X 13.
Maybe Rune meant changing from 13XS to 14XS............
Old 05-27-2013, 10:19 AM
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Default RE: Q80 13XS VS 14XS

Yeah, that makes sense now that I reread what he wrote.
Old 05-27-2013, 10:44 AM
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Rune
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Default RE: Q80 13XS VS 14XS



thats correct, I'm consider to maybe try a 14xs with a 21x14.
To morrow I will go to a friend and compare some number (amp's) on ground just to see what they maybe tell me ..he has a 14xs and I wil be able to borrow a motor from him for som test in the air if it looks intresting.
I know that just testing on ground will not give the full picture but can give some leads.
I know some here in Norway get flights up to 9 minutes on a 14 xs ( sure he's better with the throtel than me) but if I can get maybe some more.
And I think also it will be better for my batteries.

Old 05-27-2013, 11:01 AM
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Default RE: Q80 13XS VS 14XS

Rune,I don't know if will help to go to a 14, but it's worth a try. I run a 14XS on an Arixtra that probably weighs about what your Spark does. I run a Falcon 21 X 13.5. Like I said I use about 3,200 to 3,600 on the new US Masters that is just about as intensive as schedule P. It takes just a bit under 7 minutes.
Old 05-27-2013, 12:10 PM
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Rune
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Default RE: Q80 13XS VS 14XS

well thanks for the inputs , I will see how it work out tomorrow!
Old 05-28-2013, 08:22 AM
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Rune
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Default RE: Q80 13XS VS 14XS

did some test today!
The 14 XS with a APC 21x14 is pulling 75 A , the 13XS with PT 20x13 is pulling 90 A , how this will influence the amp usage in the air I dont know but I borrowed a motor to try.
.
Old 05-29-2013, 11:40 AM
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Rune
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Default RE: Q80 13XS VS 14XS

raining today , to much to fly but hopfully tomorrow, the 14 xs is in the plane did some more test and got reading on the jetibox , first on the 13XS 92 a and the 13XS 86A both at full speed and full battery. so I hope I see some diffrence in the air ..or maybe I dont!!
Old 05-30-2013, 04:58 AM
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mups53
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Default RE: Q80 13XS VS 14XS

Interesting thread. Thanks Rune for starting it.
From what we have seen the sales of the 14XS far exceed the 13XS. I'm not sure why. Thanks, Mike
Old 05-30-2013, 07:13 AM
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Default RE: Q80 13XS VS 14XS

Mike, I would guess because the 14 can swing a bigger prop.
Old 05-30-2013, 10:55 AM
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Rune
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Default RE: Q80 13XS VS 14XS

Mike, I would guess because the 14 can swing a bigger prop.
Yes the 14 can swing a bigger prop.
One off the reason I chosed the 13 was that it was ment for a smaler prop so that one has had a 20x13 some off the reason was the weight off the prop If I would go with an Apc its a hugh diffrence in a 20" and a 21" , but when the new lightweight props has come this is not an issue any more one other reason was ground clearance as I fly from a gras field.
But to what i experience with this 2 diffrent motors , both is exelent build but the 14 is much more "soft" in the power it has the power as the 13 but the 13 is more like a angry Italian car .
For consuming power it was so equal that I can not jugde I has the timer on 7 minute and the telemetry alarm at 3800Mah and it was the same the timer and alarm started almost at the same time just as one the 13.
I was almost there that I had buyed a new motor , but right now I really dont see a good reason for it.
So I think I close this case!

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