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Old Jul 10, 2015, 10:22 PM
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Burnt out on geared.....direct or possibly outrunner, my X with the outrunner mega was crazy fun....RIP
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Old Jul 10, 2015, 10:35 PM
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Put a Kontronik Pyro on it. With like a 7x10 DUP
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Old Jul 11, 2015, 12:03 AM
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I ran a very similar setup with the 7x10 DUP on my X......mega makes a 600/## that even with the reversed shaft and custom wire termination and 100k bearings is much more reasonably priced... I ordered 2 more with hopes of using on New Xplane and possibly the swist.....we'll see
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Old Jul 11, 2015, 01:17 AM
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ehelibuff,

Thanks for the earlier reply.

5S-2700 packs have narrower cells than 2200, but are longer.
Do you think that can be made to fit? ....or the drive system has to be shorter than yours.

So far your creativity has been outstanding.
Can the space be maximized further by any more re-arranging?

----

2700mAHX(5S/6S)=2250mAH
6S-2250 in split pack would be about as capable as 5S-2700 when KV matched......goal being a very long drive like yours.

Gryph
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Old Jul 11, 2015, 03:09 AM
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Ray, you can fit 3+3s 1800 Gens Ace side by side, you can even fit Gens Ace 8s 1400 for a 2 pass flight haha! Depending on motor weight, you could fit something below the ESC but obviously depends on balance.

Was looking at model yesterday and thought about swapping shafts round to turn an E rotor'd motor into a standard rotor. Possibly using my 45 Delta and 5.25x7 and obviously external mounting. We'll see.

(Will reply to your email over weekend)
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Old Jul 11, 2015, 06:20 AM
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Tomooska,

What about an offset mount?
Can a 16/60/1 variant be pushed out a bit and put the full hurt on max 6S pack possible?

Maybe 1-2 oz near rear of plane to CG would be worth it for 260MPH attempt.
Limit for speed pass would be battery capability. Towards 4KW in a fantasy world.
No calc was done since I don't know the power required while at 200MPH etc.
Healthy prop size could be maintained as needed for extra drag at high speed.

You thought outside of the box with your chopped fuse and custom heat sink.
What do you think of offset mount for those not wanting to chop the fuse short?

Some people want hotlining, some want F5D, some want Sport.......some adventurers want max possible speed with electric motors, some with Turbine.


No hard yanking and banking at 250+MPH.

G.
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Old Jul 12, 2015, 01:07 AM
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Quote:
Originally Posted by VooDoo Child View Post
You have to do a 2X4 pack setup,unless you can find a 6S pack that is the same size as a 2700mah 65C 5S Thunder Power,cause that is the Max size the Swist will take......and yes,I use 5 and 6S with the Pyro,very low heat from that motor.
U can run this battery wise....^
I'm doing the same 2+4 configuration as Voodoo did...but with 2600 Dinogy setup..
What was that drag racing term....can't beat cubes (mah).....
Its really horses for courses...i'm going to 2600 so i get some decent amps/flight time/not thrashing the packs-too much etc..
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Old Jul 12, 2015, 05:47 PM
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Quote:
Originally Posted by GryphonRCU View Post
ehelibuff,

Thanks for the earlier reply.

5S-2700 packs have narrower cells than 2200, but are longer.
Do you think that can be made to fit? ....or the drive system has to be shorter than yours.

So far your creativity has been outstanding.
Can the space be maximized further by any more re-arranging?

----

2700mAHX(5S/6S)=2250mAH
6S-2250 in split pack would be about as capable as 5S-2700 when KV matched......goal being a very long drive like yours.

Gryph
Yes, possibly... You would have to like make the ESC caps go 90 deg. for clearance. Then, I think it could be possible. But it would be such a tight fit in there, if a house fly got in there and farted, the fuse would explode.
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Old Jul 12, 2015, 05:48 PM
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Another set up would be using a YEP 150A with really short leads.
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Old Jul 14, 2015, 03:07 PM
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Gryph, a 16/60 may even work with the standard motor mount position, as a 16/40 has been used with a gearbox (Presume similar sized Neu's have been used as well, not clued up on their lengths) and balance fine. Plus my 16/40 and heatsink weigh quite a bit together so a 16/60 might balance reasonably?

If it wouldn't balance with the standard motor mount position then I wouldnt bother without chopping the nose. A further forward mount could be done, but I can't see it being very easy to do with a standard fuselage, as you couldn't go bigger than 30mm diameter (that means the extended mount could only have a wall thickness of 1mm) and even then you would have to make the mount permanent because the front lip of the fuselage would have to be removed meaning you won't have any meat left to make a two part mount.... Then you run into balancing problems and I doubt it will fly very nice at all as it would be pretty heavy with the 16/60, large 6s pack and possible ballast to help balance it at the back.

Surely a 16/50 could be used to achieve very high speeds and you won't run into balancing problems. My 16/40 got 226mph measured by Mopar and you know well that the 16/40 had more potential than I threw at it.

Maybe a heavy motor isn't the way to go, and ideally use the power from a smaller motor more wisely to get similar results.
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Old Jul 18, 2015, 02:53 PM
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Thanks Tom,

I appreciate your thoughts and comments on the offset mount.

I did a write up to reply to your post, but lost it somehow few days ago.

Given ehelibuff's shared drive specs, 16/60 would fit, even 16/65 with old style shields would fit.
Goal was to see how big 6S pack could also get in there....or a 5S. Which ever could provide max power given their capacity because motor could be KV matched to the battery.

Power comes from the battery. So limited battery would limit power.

Nice thing about bigger motor than otherwise is that given same inefficiency (waste) it would take longer to heat up.
More throttle use could be had, or larger prop for same input watts, or more power, or some combination thereof.....there are multiple ways that a capability of a bigger motor could be put to use.

You mentioned 16/50, I have this 2150KV Delta and it took 170A on 5S during Winter in a FJU.
Maybe it could take 130+A in this airframe given less cooling airflow to motor.

http://static.rcgroups.net/forums/at...CE%203S_6S.jpg


Is there a good over pitch folder that draws similar to APC Pylon 6.5X6.5 ?
Can your 7X10 folder use smaller middle piece to draw similar to above?

______

Also thank you ehelibuff for your last reply.


G.
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