RunRyder RC Helicopter Topic - How to make a lighter N9 with great power

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Synergy R/C Synergy N9 > How to make a lighter N9 with great power

missle
Senior Heliman
Location: West Chester, Oh

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Ironhide, cool looking ride you got there. I've got one also, but I've not considered the ECF for it (but would make a lot of since cause you have to cut a hole in the front window for cooling flow).

I'm not looking to make her a feather weight, but rather trying to see how much I can drop without loosing stability. I'd also like to try the ECF cause it just seems more effecient in theory (for example look at almost every car produced now). Hell, maybe we can even come up with a "super charged" YS if we could build a pound or two of pressure

WATCH OUT!!!!!!!!

05-15-2009 03:55 AM

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Rymps
Veteran
Location: Indianapolis

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Here is some of the trimming i have been doing. this part is now 5 grams.

05-29-2009 02:10 AM

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baddynergy
Elite Veteran
Location: valencia, ca- usa

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Rymps,

Nicely done..

**Unattended children will be givin a shot of espresso and a puppy**

05-29-2009 02:23 AM

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Rymps
Veteran
Location: Indianapolis

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There is more to come. I will post as soon as i get a chance to finish the rest.

05-29-2009 02:27 AM

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Ironhide
Senior Heliman
Location: dexter mi us

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Rymps , a little thin for me but I will follow your same mod but send it back out for Anodizing .Seems simple but effective . I would just be sure to make a box out of your bracket .

Missle I'm up for anything to make an engine breathe better but I'm not so sure you can force feed a 2 stroke nitro diesel ?

05-29-2009 03:16 AM

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Rymps
Veteran
Location: Indianapolis

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Quote
a little thin for me

The thickness it 1 mm. The original part is 9g and the moded part is 5g. I used a 3/8 and 1/2 end mill to cut the parts. The thickness can be thinner as the front frame provides the backing and strength.

[/quote] I would just be sure to make a box out of your bracket.

Quote
That would make no difference in my case as I did think of that, but I raelizde what this part dose. Its job is just to hold the frames together by acting as a fancy nut plate. The frames and bolts do most of the work. You could mill the center out of the block and have 4 peices the bolt to the heli and it would work just as well, but i thought my way would be user freindly as one peice.

send it back out for Anodizing [quote]I am planning on doing the same, but wanted to show what I have done. And I thought this would show up in a picture better. But i like your thinking on this

Now it is time to work on the tail rotor hub and then the rear tail boom mount.

06-04-2009 03:13 PM

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baddynergy
Elite Veteran
Location: valencia, ca- usa

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rear tail boom clamp.Quick UK for trex, very light..

**Unattended children will be givin a shot of espresso and a puppy**

06-04-2009 03:24 PM

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Rymps
Veteran
Location: Indianapolis

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Quote
rear tail boom clamp.Quick UK for trex, very light..

I like. I will check into it.

06-04-2009 05:05 PM

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Bart B
Key Veteran
Location: A thousand miles from nowhere

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Guys
Any new updates?
What about a smaller fuel tank?Say 4oz. less?

06-30-2009 02:21 PM

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Bernd_K
Heliman
Location: Höchst/Vorarlberg/Au stria

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45g off with a laser sitered fan and fan housing!

Link

Bernd

Bernd Kartnaller Vorarlberg/AUSTRIA

07-01-2009 06:40 AM

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missle
Senior Heliman
Location: West Chester, Oh

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BerndtK, nice job on fan. Are you selling these? Is there a english interp of your mods and tips on your web page?

As for a update on mines, i decided to go with the CF Quick UK frames and i just started putting it together last night. Im going to order the electric fan from the Odin 90 and now ive got decide which motor (OS or YS).

WATCH OUT!!!!!!!!

07-01-2009 12:06 PM

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Ironhide
Senior Heliman
Location: dexter mi us

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I'm in , but is it going to come in black ?

07-01-2009 01:07 PM

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Carl Bonta
Senior Heliman
Location: Elgin, IL USA

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Are you planning on flying with the SLA material? If so let us know if the fan stays together at full RPM.

Where did the wt. savings come from? Is it thinner walled?

Let us know if it cools better or not as well.

Also, pitching the fins will rob HP, will this loss be greater then the gained power being 45g lighter?

07-01-2009 04:57 PM

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Ironhide
Senior Heliman
Location: dexter mi us

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I do like the turn vane inside . I don't know how much flow will stay attached but I could test it for ya . I work at Airflow sciences in MI .

Some of the SLAs now days are pretty strong stuff and some even high temp .

07-01-2009 06:14 PM

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Bernd_K
Heliman
Location: Höchst/Vorarlberg/Au stria

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Hi together!

I’m flying the fan already for more then 20 flights and there are no problems at all.
The material is polyamide 11 and it is stable enough. One of the reasons to make the fan stable is the second cap, which carry the shovel from both sides.
If you take a closer look at the shovels you will see that they are curved with the rotating direction. That’s been used to make the fan quieter. If they are curved against the rotating direction it may bring some more extra airflow, but this time there is no need for, not either on summery air temperature up to 30°C. Maybe the vane helps to cool the engine too!

Yes, the weight saving is a result of thinner material of the fun housing.

It’s also easier to mount the housing by the possibility to screw the housing after the engine is installed.
All in all I’m happy with the new fan.

Today I mounted a new enhanced version, with a housing which covers to the engine closer.

This time there is no plan to sell these parts!

If you have some good ideas in this case, I will look forward to your proposals!

Bernd

Bernd Kartnaller Vorarlberg/AUSTRIA

07-01-2009 08:52 PM

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Bart B
Key Veteran
Location: A thousand miles from nowhere

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Bernd
Nice

Quote
This time there is no plan to sell these parts!

I need only one

07-01-2009 09:34 PM

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Bernd_K
Heliman
Location: Höchst/Vorarlberg/Au stria

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Hi!

Some sreenshots from the new housing and fan.

Bernd

Bernd Kartnaller Vorarlberg/AUSTRIA

07-03-2009 10:41 AM

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HelividD
Senior Heliman
Location: Clarkston, MI, USA

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Sweet looking fan! Very interesting design. I am waiting to switch my frames to the FBH version(frames and bearing blocks) also. I am building one with them and need to switch the other machine over.. I can't wait!

But, pretty fan...

Every time I fly I loose more hair! LOL

07-07-2009 04:57 PM

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missle
Senior Heliman
Location: West Chester, Oh

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Well I finally got my original Synergy back in the air today but not after adding a lil "lightweight" mod to it

To sum it up, I've got the electric fan installed and the best part is the entire setup weights LESS than 1/2 the stock fan setup. For now, I'm running the fan off the rec battery (Fromeco 2S 4800) and motor temps were in the 200-230 range but it's my first run with this motor (OS 91 SZ-pump) and I've got to get here tuned. Power so far is already more than what I was getting out of my YS 91-ST.