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Gas Powered Thoughts Advice for Gas Helicopter Success from Carey Shurley


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Old 08-11-2016, 04:25 PM   #21 (permalink)
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Hey Doug,

Hope your well mate

Yeah, like the Goblin, Agile and 766, everything to be gained form keeping servo lead runs short and FBL out of any potential Heat Failures.

I think this has been a reliable formula to date.

Joey.
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Old 08-11-2016, 09:14 PM   #22 (permalink)
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Joey, looks fantastic As always, amazing work.
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Old 08-13-2016, 12:43 PM   #23 (permalink)
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Drool...

So glad this came to fruition. Will the gearing have a particular blade length in mind?

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Old 08-13-2016, 06:35 PM   #24 (permalink)
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the usual 690-715 depending on your flying style and blade design in terms of loading

I tend to run 690ish blades on all these things.
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Old 08-15-2016, 06:53 AM   #25 (permalink)
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Originally Posted by carey shurley View Post
the usual 690-715 depending on your flying style and blade design in terms of loading

I tend to run 690ish blades on all these things.
Pardon the newbie questions:

Why wouldn't you run 716 - 806 blades?

As I expect that it will be heavier than electric, wouldn't it make sense to improve the disk loading? (thinking autos, etc.).

Tuned Zenoah motors have more power; wouldn't they handle the larger disk?

Learning all the time from you guys...

Al
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Old 08-15-2016, 09:25 AM   #26 (permalink)
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true the larger blades are great for improving the disk loading but the fact is that just like glow motors its not that hard to overload the engines ability to hold/recover disk rpm

a good example is the goblin nitro, most 700 models use 700ish mm blades. They chose to use 650ish blades to improve overall performance at the expense of better blade loading.

doesn't apply so much with electrics where there is so much power available
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Old 08-16-2016, 04:20 AM   #27 (permalink)
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Quote:
Originally Posted by carey shurley View Post
true the larger blades are great for improving the disk loading but the fact is that just like glow motors its not that hard to overload the engines ability to hold/recover disk rpm

a good example is the goblin nitro, most 700 models use 700ish mm blades. They chose to use 650ish blades to improve overall performance at the expense of better blade loading.

doesn't apply so much with electrics where there is so much power available
Thanks, Carey! If I understand, you think even the newer motors would not be able to hold RPM with the longer 806 blades. So flying style would be seriously affected.

AL
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Old 08-16-2016, 12:43 PM   #28 (permalink)
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sorta depends on your flying style and pitch requirements. If you're just sport flying using a lower head speed with the proper drive ratio you can get away with longer blades

high performance/high headspeed seems to work better with shorter blades
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Old 08-16-2016, 11:04 PM   #29 (permalink)
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Gonna keep my eye on this
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Old 08-17-2016, 08:51 PM   #30 (permalink)
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Looks killer!
Is there an guestimate as to when this will be available?
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Old 08-18-2016, 11:46 AM   #31 (permalink)
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everytime I make a prediction I wind up being wrong but it won't be as long as some of our previous projects. I'd like to have at least one flying this year, time will tell. Its hard to predict how long it takes to have parts made in relatively small qtys and whether or not there are any quality issues when they are made
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Old 08-18-2016, 02:54 PM   #32 (permalink)
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Since the 766 was originally designed to be bigger than 700 size(everything built heavier), will trying to make it into a 700 gasser make it heavy compared to the other gassers out there? Otherwise, I think it is a great looking heli.
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Old 08-18-2016, 05:12 PM   #33 (permalink)
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Well, I'm not sure what the weight of the converted model will be yet so I can't answer that

however there will be multiple drive ratio options to run the various blade lengths
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Old 08-19-2016, 01:09 PM   #34 (permalink)
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I have enough helis!
Hmmm a Synergy Gasser... hmmmmm....
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Old 08-20-2016, 05:01 PM   #35 (permalink)
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Looks great let me know when I can pre order.
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Old 08-21-2016, 08:59 AM   #36 (permalink)
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Default Its going to be big

If you're flying that machine with 816 blades I think the performance is going to be similar to the JR or Airstar/Vario machines, more sport than 3d. In 716 configuration its going to be close to 3D, but it still may be heavier than the rest not sure about that after Carey puts one together it will be interesting to see what it comes up with.

Ideally under 13 lbs will be better but some of the conversions tend to come in closer to 14. Since the synergy is a bigger model, I would expect it to be close to 14 than 13. Of course you can always fly it with the big blades and 3D slowly with it like guys fly it on 1 battery pack at slow head speed. In the gasser configuration it will beat that performance I'm sure.

-=>Raja.
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Old 08-21-2016, 01:37 PM   #37 (permalink)
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Huuummm I don't need another heli but this looks interesting !
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Old 08-21-2016, 02:26 PM   #38 (permalink)
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What will be really interesting, is how the 766 in the 716 format will compare to the Agile performance wise. Carey mentioned the Agile was very responsive converted.
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Old 08-21-2016, 10:36 PM   #39 (permalink)
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Is it just me or is that using a nitro tank? Wouldn't a proper Dubro tank be better?
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Old 08-23-2016, 02:22 PM   #40 (permalink)
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Quote:
Originally Posted by Atomic Skull View Post
Is it just me or is that using a nitro tank? Wouldn't a proper Dubro tank be better?
Most gasser conversions use the tanks from the heli it was originally (nitro), and a lot of the gas conversions I've seen were using Trex 700 tanks.
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