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3D Heli Depot . JR-Spektrum . Gyro Hobbies

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Synergy R/C Synergy N9 > Spare tank for Synergy
 
 
Caseyho04
Heliman
Location: Hongkong

Having gone through most of the pictures, no one using spare tank in Synergy.

Just interest to know anyone has installed spare tank in Synergy. it seems that there is no space to install one.
08-17-2006 Over year old.
 
 
j5coat
Veteran
Location: Phoenix

i have seen a header tank on a synergy, but since most people are runnning pumped motors there is no need for a headertank.

Trex 700, Trex 600n
08-17-2006 Over year old.
 
 
harveyhugo
Senior Heliman
Location: Cheshire, UK

There is not an ideal place to fit a header tank on the Synergy.

RockDoc has done it, using a Raptor header tank and a long standout, but he has had to drill a hole in the frames. The header tank will fit between the tank and the carb inlet but the position is not ideal.

I'm not running the pumped OS91SZ-H and so will probably look into fitting the header tank in the future. However I am currently trying out an omi fuel magnet. However I'm concerned as to how long the foam will last due to the gases from the exhaust manifold in the fuel tank. Only time will tell.

I've always had header tanks on all my heli's and currently find it a little disconcerting that it is not there when I'm looking for it during a flight on the Synergy

2 x Trex 600N, 2 x Synergy N9
08-17-2006 Over year old.
HOMEPAGE  
 
 
RockDoc
Senior Heliman
Location: Middlesbrough, England

As mentioned I have fitted a Thunder Tiger header tank between the main tank and the carb. I used a stand-off about 3/4" long attached to the main frame below the engine and mounted the bracket upside down to hold the tank. I am also using an OMI Fuel Magnet in the main tank. I like the added safety of the header tank and it's helpfull as a visual aid when the main tank is getting empty.

You should be able to make it out on my Synergy in the pictures on my Gallery page.

D.

Sponsored by Barclaycard!

www.clevelandheli.co.uk
08-17-2006 Over year old.
HOMEPAGE  
 
 
caseyho
Heliman
Location: Hong Kong

Hi RockDoc,
Just checked your picture, actually I have mounted the headertank similar to you except I just using a cable tie to fix the tank onto the engine mount.

Anyway, tks for your advise.
08-17-2006 Over year old.
 
 
bobj
Veteran
Location: United Kingdom

Hi

There is no real need to run a header tank on the Synergy if using a fuel magnet, the Cline carb set up helps as well (YS should work the same) I can 3D hard until the tank is dry and I mean dry as the magnet sucks up every last drop.
Do make sure to cut the clunk line to the recomended length or close to it as it really does pick up better from the middle of the tank rather than all the way to the back.

Also I did run muffler pressure for a couple of months with no issues with the magnets foam degrading, I know it does happen but it takes a while.

Cheers
Bob J
08-17-2006 Over year old.
HOMEPAGE  
 
 
raptorheli2
Elite Veteran
Location: rip off britain and no changing it

i have just received my fuel magnets to use with mine as i don't want a header and the synergy doesn't lend itself to it really.

realraptors has the magnet and spare foams for anyone wanting them.

cheers


www.waterfoothelis.com
08-17-2006 Over year old.
HOMEPAGE  
 
 
frankg11
Veteran
Location: Bellevue, WA

The fuel magnet at the back of the tank works great. It sucks up every drop of fuel and goes lean only at the very end.

If you are running a pumped motor there is also no reason for muffler pressure. It's not necessary.
08-17-2006 Over year old.
 
 
GWS
Heliman
Location: Hermosa Beach,CA

Who sells the fuel magnet. Not familiar with this gizmo.
08-17-2006 Over year old.
 
 
frankg11
Veteran
Location: Bellevue, WA

Ricks's www.ronlund.com
08-17-2006 Over year old.
 
 
bobj
Veteran
Location: United Kingdom

Hi frankg11

The reason for having the clunk line stop in the middle of the tank is that is fast forward flight once the model has stopped excelerating the fuel will tend to run to the front of the tank because of the models nose down flight.
If you have say less than a third of a tank of fuel then it is possible for the clunk to be completely out of the fuel and even a fuel magnet can't cope with this for more than a very short time.
This is a common problem with all models that have the clunk line coming in the from the front of the tank.
Not a big issue at all but worth avoiding all the same.
Try flying a Raptor V1 with the longer tank with out a header tank and you will find out about this problem quickly enough:-)

Cheers
Bob J
08-17-2006 Over year old.
HOMEPAGE  
 
 
frankg11
Veteran
Location: Bellevue, WA

bob, thanks for the clarification. I have not run into that problem, fingers crossed.

I do know that the specd length of the clunk line always seemed a bit short so I made mine longer but a few MM to get it closer to the back.

I will watch out for the problem.

THanks for the warning. BTW -- this is the first bird I have flow without the header tank.
08-17-2006 Over year old.
 
 
ehn
Senior Heliman
Location: Fairfax Station, VA

"... reason for having the clunk line stop in the middle of the tank...

Bob J, wouldnt't that create a problem on a long stall turn staying vertical when the tank is low?

Long Island Eric
08-18-2006 Over year old.
 
 
raptorheli2
Elite Veteran
Location: rip off britain and no changing it

what about if you do a tail first stall and the fuel is at the front of the tank?

this is why i chose to get a fuel magnet for mine.

cheers


www.waterfoothelis.com
08-18-2006 Over year old.
HOMEPAGE  
 
 
bobj
Veteran
Location: United Kingdom

Hi Eric
-----------------------
Bob J, wouldnt't that create a problem on a long stall turn staying vertical when the tank is low?
-----------------------
As with everything with heli's there is no perfect option only best compromise, forward flight is substainable for a long time, the climb out on a stall turn is not by comparison.
with out a fuel magnet you will get fuel pick up issue at some point when the tank is low on all heli's and that's what header tanks are good for.
The Synergy with a fuel magnet deos not need a header tank, a long clunk line will work but overal a shorter line will work a little better.

Do a long long dive in to a big fast pass even with a fuel magnet and short or long clunk with only 1/2 inch left in the tank and you will defeat the fuel magnet even:-)
However the same set up will allow you to 3D until the tanks empty!

Cheers
Bob J
08-18-2006 Over year old.
HOMEPAGE  
 
 
RockDoc
Senior Heliman
Location: Middlesbrough, England

Well, I think it's all down to personnal preference really as there is no perfect solution just the best compromise.
If you're doing displays and competitions you probably rarely empty the tank completely, but for general practicing and club weekend flying I like to get as long a flight as possible. I just like to see that last bit of fuel in a header tank. The fuel magnet certainly seems to make sure the header tank is always completely topped up with no trapped air which is nice to see.

Maybe when I get my second Synergy i'll run it without a header tank...

Darren.

Sponsored by Barclaycard!

www.clevelandheli.co.uk
08-18-2006 Over year old.
HOMEPAGE  
 
 
RockDoc
Senior Heliman
Location: Middlesbrough, England

Well six flights or so on my Synergy and the OMI fual magnet I fitted filled my tank with mush and bits so back to the header tank and standard clunk for me. Also had two flights with one on my Raptor 50 and after checking that one it is mush too. They are a great idea and work really really well but i'm afraid I don't want a filter full of bit's of foam and have to change them every couple of flights.

D.

Sponsored by Barclaycard!

www.clevelandheli.co.uk
09-03-2006 Over year old.
HOMEPAGE  
 
 
DOKEY
rrProfessor
Location: Northampton UK

Which one are you using, seems like there is two on the market, the foam on one is grey in colour, the other is white?

Are you using muffler presure ?

Check the gallery!
09-03-2006 Over year old.
HOMEPAGE  
 
 
ehn
Senior Heliman
Location: Fairfax Station, VA

"and the OMI fual magnet I fitted filled my tank with mush"

The direction on my fuel magnet (OMI also) said not to leave the foam uncovered with fuel, or it will disintegrate, esp. when using muffle pressure. Did you run the fuel way down and not refuel soon after? I'm very curious because I haven't put mine in yet. I ordered extra foam, but I don't want to change it frequently!

Long Island Eric
09-03-2006 Over year old.
 
 
RockDoc
Senior Heliman
Location: Middlesbrough, England

They are the white ones and I am using muffler pressure with 30% CY Wildcat. I had heard that they didn't last as long with muffler pressure but thought it might be longer than this!

The one in my Synergy was dry after it's last flight. I either ran the tank empty or drained it, but the one in the Raptor was still sat in fuel and it doesn't seem to have made a difference.

I have spares foams but I don't like the idea of them breaking up and clogging up my filter after such a short period so I'm not gonna risk it. I would rather use a clunk and header tank again.

D.

Sponsored by Barclaycard!

www.clevelandheli.co.uk
09-03-2006 Over year old.
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