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HomeAircraftHelicopterGasser Model RC HelicoptersOther › New to me Vario based Gasser
03-25-2017 06:43 PM  20 months agoPost 1
goodhunting

rrVeteran

Slovenia ... somewhere in Europe

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OK... so here is my story.
Been flying electrics only...since 2011... and loving them.
I'm into scale helicopters so electric to me is great... as it is clean.

But about a year ago I got this Vario based gasser in some horse trading...
My first inpulse was to change the motor to electric but after some reading out here... I decided to give it a try...

Now at my local flying field there are only two of us that fly helicopters and both fly electric... the rest of the guys are die hard old school plankers or quad guys...
So I can not get any help there... and I turned to this forum. After I read most all threads I bugged Raja... who was really helpful... so THANKS...

First thing I did was to remove the flybar... I just don't play nice with them so off it went.... Then I swapped out the electronics... old servos for Align's DS610. Say what you like but I like those servos and for the price they are awesome... I usually fly SK720... but as I heard that the governor function on it is... sometimes itchy I used a Vbar... full sized, blue version with pro software and Xtreme loaded...
I used to fly Jr equipment... and used the Jr's sensor for RPM setup.... Then I changed the radio for Jeti... and kept the Jr RPM unit.. plugged in to Vbar... it WORKS like a charm...

Anyhou.... I finally decided to grow some balls today and I maidened my first gasser.... and OH BOY... this is great...
Yes it is loud... yes it smells... but it was awesome in the air...

so here are a few pictures... I know it looks ugly...as it used to be an areal camera platform but... I decided to keep the sideframes as they are...

In simple words.. I love this helicopter and will be flying a lot more of it this season....

Just a quick question though... as this is my first gasser.... is this oil splatter normal or should I be concerned?

gh

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03-25-2017 08:03 PM  20 months agoPost 2
JuanRodriguez

rrProfessor

The Villages, Florida

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The oil splatter is NOT normal... I owned an Xcell gasser and then a Bergen gasser and both ran clean as a whistle....

You can see where the leak is coming from..... the header into the start of the flex tubing....

Perhaps you can install a silicone coupler with a clamp on each side of that joint to stop the leak.....a silicone coupler between the flex tubing and the muffler would not hurt either..... if it's not leaking now, it will probably leak down the road....

Been there, done that and old enough to know better.....

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03-25-2017 10:55 PM  20 months agoPost 3
RM3

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Killeen, Texas - USA

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I would find someone with a TIG welder, take that whole exhaust clean it up and TIG weld that to seal it permanently...

showing a preference will only get you into trouble, 90% of everything is crap...

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03-26-2017 08:05 AM  20 months agoPost 4
goodhunting

rrVeteran

Slovenia ... somewhere in Europe

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Thanks for the replies. So this oli splatter si from the exhaust and not the engine?
That is good news....

Gh

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03-26-2017 08:45 PM  20 months agoPost 5
doorman

rrProfessor

Sherwood, Arkansas

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YEP..
Easy fix.. just need to seal it with a silicone sleeve and clamps.. I would not suggest welding it...

Stan

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

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03-26-2017 08:55 PM  20 months agoPost 6
JuanRodriguez

rrProfessor

The Villages, Florida

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^^
Exactly what I said three posts ago ....

Been there, done that and old enough to know better.....

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03-26-2017 09:53 PM  20 months agoPost 7
goodhunting

rrVeteran

Slovenia ... somewhere in Europe

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OK so this may be a bit noobish.... but where do you guys get your silicone tubing to seal this leak?

gh

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03-26-2017 10:06 PM  20 months agoPost 8
JuanRodriguez

rrProfessor

The Villages, Florida

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Here is one place and I'm sure there are others ...... make sure you measure to get the right size
http://www3.towerhobbies.com/cgi-bi...u%3C%2Fb%3Epler

Been there, done that and old enough to know better.....

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03-26-2017 10:14 PM  20 months agoPost 9
Four Stroker

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Atlanta

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Might also try this type of stuff:

https://www.amazon.com/Permatex-803...s=muffler+patch

Permatex Muffler & Tailpipe Sealer good to 2000F. Silicone rubber hose may melt at that location.

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03-26-2017 11:30 PM  20 months agoPost 10
BeltFedBrowning

rrKey Veteran

Kansas City

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My Mongoose does the same thing. It has done it for the 10 years that I have had it. I dont worry about it. I just wipe it down.

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03-26-2017 11:44 PM  20 months agoPost 11
RM3

rrElite Veteran

Killeen, Texas - USA

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Silicone rubber hose may melt at that location.
Thats a guarantee.... thats why I say weld it if it bothers you to see oil spatters...

otherwise +++1 on the Permatex Muffler & Tailpipe Sealer

showing a preference will only get you into trouble, 90% of everything is crap...

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03-27-2017 12:10 AM  20 months agoPost 12
JuanRodriguez

rrProfessor

The Villages, Florida

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I've used silicone couplers before without issues ..... may need to be replaced from time to time but other than that , works for me .

Welds are likely to crack with vibration .... seen that plenty of times ....

Been there, done that and old enough to know better.....

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03-27-2017 12:40 AM  20 months agoPost 13
main rotor

rrNovice

Pomona NY USA

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I would not weld it , i would buy teflon tube with the same ID as the pipe OD. Remove the metal flex section and replace with the teflon and 2 spring clamps. It will never go bad and completely seals. Check this ebay auction for 16mm tube -http://www.ebay.com/itm/DLE-35-40-Exhaust-Extension-Tube-Teflon-16mm-ID-x-18mm-OD-x-76mm-/112340442192?hash=item1a28031c50:g:VWQAAOSwnQhXo1Cp

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03-27-2017 02:49 AM  20 months agoPost 14
Four Stroker

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Atlanta

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Well now you have four things to try. One of them should work.

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03-27-2017 05:20 AM  20 months agoPost 15
goodhunting

rrVeteran

Slovenia ... somewhere in Europe

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thank you guys...
really appreciate the help

Klem

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03-27-2017 02:18 PM  20 months agoPost 16
doorman

rrProfessor

Sherwood, Arkansas

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Vario Part
Vario pn 115/11
This is what I would advise... like Juan
says, this will take care of the leak, and it will last..

Stan

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

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03-27-2017 02:35 PM  20 months agoPost 17
BeltFedBrowning

rrKey Veteran

Kansas City

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This topic has been hot for a while. Here is some good reading on it.
https://rc.runryder.com/t478223p13/

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03-27-2017 02:57 PM  20 months agoPost 18
Four Stroker

rrElite Veteran

Atlanta

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The above thread sums it up. Old problem with all the same partial solutions. As pointed out in the thread, the pipes under the teflon need to almost touch. A straight run of teflon tube (with nothing inside) will melt and blow out. I would go with teflon tube with a metal tube inside and some clamps first. If that does not work keep trying. People have been trying for decades ! It's a hobby.

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03-27-2017 04:36 PM  20 months agoPost 19
doorman

rrProfessor

Sherwood, Arkansas

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Experience..
No reason to re-invent the wheel...
If you use the Part Number I supplied you for the Vario part, you will be fine.
I have owned 4 Vario Benzin helis and all were equipped with this part to couple the header to the muffler...and all ran clean and lasted a minimum of 5 years, and probably would have gone longer if I hadn't changed over to e-power...
So, I am not guessing at what will work... the suggestion is from hands on experience..

Good Luck with your choice...

Stan

As Four Stroker mentioned there does need to be pipe inside of the tube.. I always used my thumb as a reference for spacing between the two pipes.. so there is only about 1" of open tube, the rest is on the pipes..

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

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03-27-2017 05:07 PM  20 months agoPost 20
Four Stroker

rrElite Veteran

Atlanta

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Well you can't argue with that. Do what Stan says.

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