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Home✈️Aircraft🚁HelicopterVario Sky Fox - Benzin - Evolution - Xtreme › Benzin Trainer model info saught
11-08-2012 09:10 AM  7 years ago
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martinf

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Mold, Wales

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Benzin Trainer model info saught
Hi folks,
I'm a total Vario noob and wonder if anyone has any info on my recently acquired Benzin Trainer i.e. year and what kind of pipe she's got there.
http://www.flickr.com/photos/gillia...57631719589471/

Many thanks, Marty
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11-08-2012 01:51 PM  7 years ago
Bladebuster

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Bayside N.Y.

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Hi Marty
I still have and fly the same one. I think i bought it around 1996. At that time, they had a wooden box, that you had to glue together, to hold the tank, and the electronics.
I had a muffler similar to yours, except the exhaust was pointing straight down.They recommended this muffler for the jet ranger body, which i also have.
Most of the benzins, had the muffler in the rear.
At this time i have 2 benzins and 1 acrobatic. If you like sport flying, or would like to get into scale, then Vario is the way to go. Good luck with yours.
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11-08-2012 02:19 PM  7 years ago
doorman

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Which One...
As Bladbuster said, it is the older version Benzin Trainer.. I still have 3 of the same ones.. I purchased my first one in 2003.. the engine is the older version G-23 (with the red kill button) and I had the same exhaust for mine to fit into the Hughes 500..
Here is a link to them and it looks as if the 8301 would be the newest version of the one in your pic's...

http://www.eastcoastvario.com/index%20splash.html

Great flying heli's and base for several petrol and turbine sized fuselages....

Thanks, and good luck with it... Stan
AMA 2918-Team Spin Blades,,Castle Creations, Unique Aircraft
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11-08-2012 04:22 PM  7 years ago
martinf

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Mold, Wales

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Hi BB,
Many thanks for that info. I've just spotted 12/99 typed on the build manual that came with it. Could it be a 1999 model?

It has the Zenoah 23cc gas engine fitted and I'm still trying to find the sweet spot with the carb set up. The first hover revealed a high head speed 1900rpm.

I've calmed it down with the throttle curves and it's nearer 1600rpm now but if I pop the air filter cover off, I can see the throttle butterfly is only open by about 1/4 at full stick.
Can this be correct? My pitch range is -2,zero at mid stick and + 9* at top wack.

Still tinkering, Marty

PS - Hope you folks are OK after Sandy came through your back yard.
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11-08-2012 04:33 PM  7 years ago
martinf

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Mold, Wales

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Hi Stan,
You've got 3 of them. You must like them and have a big man cave

I've bought it for a big scratch built scale project and I'll electrify it next year. But in the meantime, I'll try and get some stick time on this big bird as I come from small electric helies.

Thanks for the link and info,

Marty
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11-08-2012 07:44 PM  7 years ago
doorman

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Headspped....
Hi martinf,

Yes, I am lucky enough to have my own shop for my heli's.. it makes it very nice to be able to keep them where I work on them...

As for your HS... on the 725mm blades the max HS is 1450, and if you have the long version with 800mm blades the max is 1250..

You are correct in that the carb will only be slightly open to get these HS's but you need to follow the info supplied from Vario...also the gearing could be making a bit harder for you to hit the HS... I like to run the 90/18 gearing... it just makes things work nicer!!!

You will be good to go with the engine you have on it, especially if you do set it up with the longer tail boom, if it is not already there and the 90/18 gear set and 800mm blades...that will let you get the proper HS and let the engine breath a bit more...

If your manual says 1999, it sure can be correct...they have only made some changes in the original kit in the past 3-4 years (approx).. Joe would be able to tell you when the changes began..

I will also throw this info in for you... my original 2003 version is still flying and has not needed ANY parts, bearings or otherwise, and it still flies like the day I test flew it... that should give you a good idea of the quality materials Vario uses..

If you take a look in my gallery you will see some shots of my benzin models... the dark blue and silver Jet Ranger and the Hughes 500 (#1) and then a pod and boom one that I use to check out different heads and set up's to get used to them before installing them in the fuselages... it helps me to get the basic set up first and then the final changes are made once in the fuselage..

Good Luck with yours... Stan
AMA 2918-Team Spin Blades,,Castle Creations, Unique Aircraft
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11-08-2012 10:06 PM  7 years ago
martinf

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Mold, Wales

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Thanks Stan -
great gallery, helies and boy, do get some snow there

Cheers, Marty
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11-12-2012 09:46 PM  7 years ago
Scorpion

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Socal USA

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Marty, Airstar has a very nice muffler for the gasser and i recommend this one.

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11-13-2012 05:54 PM  7 years ago
doorman

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Sherwood, Arkansas

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Get Some Stick Time....
Marty, I think that is a very good idea... not sure what Scorpion was looking at, but the muffler that came with your heli should do just fine for you in pod and boom form..
As far as your pitch curve ?? which I missed earlier should be at about -4 at low, +5 at mid, and +10 to +12 at high...
You are also correct in that the throttle plate will only be open very little at mid and not fully open at high... this will change when you add the weight of a fuselage.. but do give it what it needs to hover at half stick (+5 or so) and then let it open to full at high stick.. idle is barely open at all...
To get the proper pitch, you should set the servos at 90 degrees, along with the bellcranks at half stick, and them make your links from the bellcranks up to the swash the needed length so that the swash is sitting level and off top of the main frames by 16mm.. I made a small u shaped piece of plywood to set the swash on, but now have the 16mm building gig from Vario..you can find this info in the build manual...

Thanks for the compliments on the heli's.... I shot a couple of pics this morning after hanging all the heli's and getting my work benches ready for some building room!!!! I guess it could be called my man cave!!!

Hope this info will help you out.. Thanks, Stan
AMA 2918-Team Spin Blades,,Castle Creations, Unique Aircraft
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11-18-2012 08:44 PM  7 years ago
martinf

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Mold, Wales

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Hi Stan,
I think Scorpian was referring to the 'ex Triumph M/c' pipe on the 'Del Monte' ship there - Thanks Scorp, but I'll be converting to electric next year.

I've got the pitch curve like a Trex at the moment - i.e. -3 at bottom, zero at mid stick and about + 10 at top stick. I'll have a look at you setup as the big bird does sink a bit when I come off the throttle on banked turns .

My build book states 13mm between the swash and the frame at mid but my buddie's Acrobat is 16mm? Mine is 12 years old though.

That's a really nice shop you've got there Stan and your birds look great hanging up in the roof - saves space as well. Nice

Cheers, Marty
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11-18-2012 09:28 PM  7 years ago
munkey nuts

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wales uk

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hi marty, i had a little revo mix. so when turning the rudder i used to have extra or less power on the throttle to compensate for the drop or climb on turns.
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11-18-2012 09:56 PM  7 years ago
doorman

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Sherwood, Arkansas

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3D Set Up..
Thanks Marty, yes, I am pretty proud of my work area!!!! I always wanted it to be detached form the house so that I could paint or use those "smelly materials that we just to build these things!!!

You are correct you are trying to fly with a 3D set up... you will not want that in a scaler...
As for the spacing... I just helped a buddy reset his "NEW" benzin.. his manual called for 12 degrees.. I showed him where mine said 16mm so we redid his set up and made a couple of changes to the HeliCommand unit and got to test hop it Sat morning... by the time I got to the field he had already made two flights and was loving it!!!! He did save the third set of batteries so that I could take a test ride and help him "tweak" the pitch curve... the machine is smooth as silk and he was grinning ear to ear when he was leaving!!!!
Give it a try and I think you will be quite surprised as to how much different it will fly... the entire idea is to get it to the proper pitch and throttle setting for the HS and to hove right on the half stick mark..

Let me know how it works out for you.... Good Luck... Stan
AMA 2918-Team Spin Blades,,Castle Creations, Unique Aircraft
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12-03-2012 09:28 PM  7 years ago
martinf

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Mold, Wales

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Hi Stan,
Just a wee update on the tuning. I've tweaked the pitch curves as suggested and she feels better in the air now.

Watch at YouTube

Also, I'm getting some confidence in the engine now that it's running smoother. Doesn't get too hot and the insulator on the plug is a nice mid brown colour. I'm still chasing the last of the vibes though as you can see in the vid but getting there.

Just got to learn how to fly these big birds now

Many thanks, Marty
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12-04-2012 12:17 AM  7 years ago
doorman

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Sherwood, Arkansas

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Looking Good...
Hello Marty,

It does look like it is flying nicely...I did hear you say at the end of the vid that it is a bit twitchy... you can reduce the travel on the Ail and Elev to about 80% and put a little expo on those two.. maybe 30%...
I usually have my travel on the tail at about 70-75% and you can also raise the gain on your gyro a little... it is all tweaking from where you are now, but the entire flight looked very good and the engine sounds right on...you have done good!!!!
Doesn't look as if it will take you long at all to learn to fly these big guys!!! Very nice and glad I was able to help you along...

Thanks, Stan
AMA 2918-Team Spin Blades,,Castle Creations, Unique Aircraft
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