RunRyder RC Helicopter Topic - nitro to gas

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Beginners Corner > nitro to gas

conntaxman
Senior Heliman
Location: wtn ct usa

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I was wondering if anyone has converted or think it would fit,or would it be too hard to do ,is to convert a nitro engine in a hirbo shuttle Z to a gas engine. here is the engine that I think would fit.
http://www.rcmarket.org/zenoah-g231-puh-heli-pr-92.html
I think that it cost about $400.00 US dollars.
Any one have any idea's or what would be the most critical part of a change over.I know ALL of it, ha ha ha .Fitting the main shaft I guess.I have access to a cnc.
Tks
Johnny

10-18-2009 05:50 AM

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Bob Wales
Senior Heliman
Location: Lebanon CT

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Align is working on this now but they are having problems with vibration.

10-18-2009 01:01 PM

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nivlek
rrProfessor
Location: Norfolk England

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A Shuttle Z would be way to small for that size of engine .

At the end of the day , it gets dark .

10-18-2009 01:23 PM

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conntaxman
Senior Heliman
Location: wtn ct usa

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gasser

nivlek
I emailed the supplier to also see if it would fit and they also said noway.oh well.is that 23cc gas engine about the size as a week wacker? Then I could understand why. ha ha ha .
Have a very nice day.
Johnny
with my start off of a small B/400. hee hee hee

10-18-2009 07:10 PM

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jrockstuart
Elite Veteran
Location: Allen, Texas

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Shuttle Z is a 30 sized, right?

Here are the problems with your idea:

#1. That engine will be really big and heavy. You'll need a .90 sized airframe.

#2. Converting any nitro to gas, you'll need a totally different gear ratio because that engine maxes out at most 12,000rpm. Nitros spin up a lot higher than that.

#3. That engine will make a lot of vibrations. Most gassers have a "modified" G231 or G260. This means that the piston and flywheel have been modified to make less vibrations.

If you want to fly gas, it's probably best to sell your nitro and buy a Miniature Aircraft Spectra-G or a Century Predator. There is also the Bergen Intrepid.

Align is working on a Trex 700 gasser, but it is not available now.

MinAir Spectra-G
Trex 450Pro V-bar /Scorpion /JR
Wally Motors/New England Heli/DL Canopies

10-18-2009 08:58 PM

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chopper_crazy
Elite Veteran
Location: Delphos, Ohio

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I bought my first gas machine earlier this year. I love it. Super cheap to fly and never any issues. It is a Spectra-G. I have pictures in my gallery if you would like to see it.

It's a complex, costly, glow powered anti-gravity machine!

10-23-2009 07:16 PM

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Bob Wales
Senior Heliman
Location: Lebanon CT

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If Align gets the bugs worked out and puts it on the market I will consider getting one.
Very cheap to fly and I'm sure it will be priced nice to.

10-23-2009 08:56 PM

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Bundian
Senior Heliman
Location: Miami, FL USA

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I was thinking on it too, but how is it power wise?
Does it have enough power to do tic tocs and other 3D moves?

Chooper_Crazy what would you say since you have one?

Looking at the Align video I would put that thing in a blade stop with a 4 point tic toc, it seems that it has not enough power.
Would be nice to have 20 minutes flights using cheap fuel....too good to be true

Fly it like you stole it!!!

10-29-2009 02:49 PM

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jrockstuart
Elite Veteran
Location: Allen, Texas

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The Align 700G will probably have more than enough power to do 3D moves like tic-tocs, but just not real fast like you can with an electric or nitro. The gas motors have much more torque than a nitro, so you're not going to get a blade stop but the weight of the heliocopter will give it lots more inertia such that it takes longer for the tic-toc to change direction. Think of 3D in slow motion. But since you can fly for 15-20 minutes, doing the moves slower is OK.

MinAir Spectra-G
Trex 450Pro V-bar /Scorpion /JR
Wally Motors/New England Heli/DL Canopies

10-29-2009 03:20 PM

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Bundian
Senior Heliman
Location: Miami, FL USA

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Thanks jrockstuart, but I guess it's not for me.

I like very fast and twitchy movements (that's why I use negative expos

)

But still the 15-20 minute flying time is bugging me, maybe I will get one to use as a calm day heli...the ZEN heli!!

Fly it like you stole it!!!

10-29-2009 04:42 PM

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VooDooX
Key Veteran
Location: San Francisco Bay Area CA, US (San Mateo)

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i am thinking asbout getting the new Century Radikal gasser looks sweet

99.9999999999999% of an atom is empty space

10-29-2009 06:16 PM

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jrockstuart
Elite Veteran
Location: Allen, Texas

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Quote
But still the 15-20 minute flying time is bugging me, maybe I will get one to use as a calm day heli...the ZEN heli!!

Or maybe you'll want one for a windy day when all of the lighter helicopters are too buffeted by the wind to be much fun?

MinAir Spectra-G
Trex 450Pro V-bar /Scorpion /JR
Wally Motors/New England Heli/DL Canopies

10-29-2009 07:43 PM

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