hello!

most (I'd say 60% or 70%) of the noise of an outrunner is made entirely by the prop tips. the falcon hobby 21 x 14 is ver efficient on this matter (i've been using it for like a month now. In our tests, and subsequently, my opinion, the real noise of the motor itself, say q80, q60, AXI, plett 30-10 is nothing compared to the real noise generator: the propeller. if you stand by the side of the propeller while turning and see the tip going back and forth from the propeller plane, that is generating a lot of noise. you do not see this on carbon props since they are much more sturdy.

two other things affect total final noise:

construction of the fuselage: wooden (say japanese or home made) kits are more silent than composite kits, like an integral, a spark or a Xigris. these last fuses work like a drum magnifying the vibrations in a sound box. BH made us realize this issue here in Colombia

how sturdy the firewall is: we've tried from an 1/8" lite ply one side glass laminated firewall, 1/8" lite ply one side glass laminated with a carbon rod firewall on the back, up to the 1/4" carbon fiber laminated plywood. this makes a real difference. you feel these effects specially on the integrated loop in the figure M, on the vertical 8 before the spin, etc.

but for the motor itself, alone: the outrunners are all so silent it makes no difference. even for the chinese (ok these are a little louder but not significant). when you hear an e plane at cruise speed you only hear an aerodynamical noise, just the sound of air.you hardly hear the noise of a bearing or the motor itself.

I remember my father fighting the noise in a Curare and on an Arrow while he had a Webra 61 Long stroke rear exhaust and a tuned pipe. they fought the noise a lot with the propeller selection.

Andrew, I did not mean to hijack the thread sorry...

Can't wait to see the Spark Evo on the air!

Marcelo Velez</p>

Here are the weights of my Evo:

Fuselage: 776 grams
Canopy: 171 grams
Bellypan: 67 grams
Right wing: 378 grans
Left wing: 377 grams
Right stabilizer: 126 grams
Left stabilizer: 124 grams
Landing gear: 122 grams
Wheelpants: 43 grams

Not very light, but ok.
Should be no problem to get it within the 5050 grams limit.
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I think that is very light - lets do some math:
Motor (Q80) = 630 gr
ESC = 70 gr
Prop = 70 gr
Wheels = 15 gr
Servoes = 210 gr
Ext cables. = 70 gr
Pull - Pull = 10 gr
Links inc rods = 30 gr
Battery tray = 20 gr
Glue = 30 gr
Batteri = 1150 gr
Receiver = 25 gr
Receiver battery = 70 gr
Total flying weight = 4584 gr.

I think that is a very very low weight, not easy to get lower.

Glow may be dying but gasoline is live and well... How much in US dollars for the gas version?

It's a little porky. [] Your estimated weights are a little on the low side compared to actual weights.

He's going to need to watch his weights if using the Q80 for sure. Use an Excel spreadsheet to get a better idea of the final weight.

Cheers,
Jason.

Here are the parts I intend to use:

Plettenberg Advance 565 grams
Schulze Future M 32.80+ 70 grams
2x JR DS3328 for elevator 2x 27 grams
2x JR DS8231 for ailerons 2x 49 grams
1x JR DS 8810 for rudder 65 grams
Power box digi switch 16 grams
Weatronic Smart 8 reciever 15 grams
Hyperion CX 4000 mAh 10s lipo 1015 grams
Hyperion 850 mAh 2s rx battery 49 grams
Aileron servo extension leads 8 grams
Self made rudder servo tray 3 grams
PT carbon prop 21x12WE 79 grams
Phillipe Marquette spinner carbon 29 grams


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Total together with the kit 4250 gr

Hi Spark09,

When you get a chance, could you advise the weight of the following components?

Rudder
Wing tube
Stab tube

Thank you,
Kevin

Hello Kevin,

I don't have the wing tube yet because Krill forgot it, they will send it to me.
Tomorrow I will weight the components for you

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They forgot your wing tube? [&:]

How did they assemble it in the photos you posted?

Do you think 4000mAh will be enough battery for the Advance in-runner?

Cheers,
Jason.

Spark09,

Thank you. Looking forward to your information.

Kevin

Used a smaller wingtube just for the photos.
I hope so, but I don't know for sure.
With my C50 with 22x12E prop I can fly the F11 sequence with ease on a 4000mAh pack.
Hope the Advance will use the same amps as the C50..

Rudder: 71 grams
Stabilizer tube 16 grams
When I get my wingube I will post the weight for you..
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Spark09,

Thank you for the information, and appreciate your help.

Looking forward to the wing tube weight when you have it.

Kevin

Hey guys..

Today has arrived ...
First steps in the assembly.
GREY background values are for catalog and / or estimated in this thread.
Rest of actual values obtained in this kit for me

more coming soon

Hi
nice plane
its only4771g
you have 2* stabilizer tube

Ohhh...!!!...most best...-17grs. !!!!..thank you !!!!

I have received my spark Evo as well!! It looks amazing!! The fit and finish is even better than my sparks I have now. I have started working on the wings and stabs. The chin cowl and canopy are mounted. I have decided that I'm going to put a C50-14xl in this model as it's a worlds year I want to use equipment that I have used and know. This was a tough decision to make but its what I felt was best for my situation.
I'm actually driving right now to Yuma az for work so I dropped the evo off to darin peirce a great pattern pilot and builder to finish up. Once I'm back I'll give flight reports!!

Andrew

Andrew,..Looking forward to flight reports and some photos!....Is the new Spark in "your scheme" ?!!
George

Ugh.. Yuma? On Purpose? I spent 13 months there with my father when I was a kid at MCAS Yuma..

Lyka

Can you please provide some details on how you plan to mount the q80. My Evo 1 arrived today and I also am planning to use the q80

thanks

Jon

Jon .....

Simply mount to the front with four screws M4 (on a 2mm carbon backplate) and from behind with a 10 mm dowel inserted into a backplate of 2 mm. This dowel was inserted into the rear bearing motor .
I seems to be no need to hold back, but for security reasons ,I consider it important.
Not be much weight gain.

If you believe another good system will be taken into consideration.

I enjoyed watching the quality of this new design is exceptional.
I feel good feelings.
The removable hinge system at the rudder is a great idea, which will save space in transport boxes, among others things.

cheers.

Andres Girabel. ( the builder)

Andres

Thank you for the speedy response. Although I have not seen a Spark before the quality of this plane seems quite impressive
To be clear you are mounting directly to the nose of the plane with 4mm bolts? Are you placing the 2mm carbon plate between the motor and the spinner ring inside the plane?

Yes the new spark is in my scheme!! I'm very excited to fly this production airplane as I have high expectations for it!!

Doug,

Yea Yuma for some Uav testing! Should be fun.

I'm sure the weather will be better in Yuma than it is in Utah right now.