Nitro 450 heli conversions

[wiley0717]

With the advances in electric technology many are going to ask "Why" so let me answer that right quick "cool factor!"
This thread is dedicated to the "Tinkerers", "Work Shop Engineers", and the rest of us who think out side the box for reasons that escape us!

[wiley0717]

I'm thinking of ways to Nitro power my Trex 450 and would like to hear from others thinking the same or better yet have works in progress!!!! Any 450 for that fact (woo hoo, parts sources!!!)
I'm told that there's a conversion out there that uses a new frame set to convert a Trex 450 but in my opinion a tail boom doesn't define a Heli so......Its no longer a Trex 450 and I want a "Nitro Trex 450"!
The only problem i am having is with a clutch and gear set. I'm thinking belt drive

[RatJr15]

It'll be tough to get a decent power to weight ratio w/ a nitro engine... You may be able to get it to fly, but nothing like an electric 450 would...

[JustinMoore12]

Weight is the biggest factor. Go to helifreak and search. You will find numerous threads and a couple pics of conversions. You cant get the power/weight ratio you can with electric. Not to mention the Huge fuel tank and motor.

[rcsargento]

[/QUOTE]It'll be tough to get a decent power to weight ratio w/ a nitro engine... You may be able to get it to fly, but nothing like an electric 450 would...

A size .12-.18 would have a lot of power, it might be tricky to mod the engine head to keep the temps. I have had the idea to do that for a while but life keeps getting on the way. Maybe over Christmas brake.

[Jirik]

I was planning a nitro- MiniTitan project last year.. Bought a motor too, but I returned it later.
Motor was .15 or .21 or something that scale. Way too big & heavy to fit MiniTitan.

Weight just gets too high -for my taste at least- when count in throttle servo, fuel tank, exhaust, rx battery, fan, clutch etc.

If someone is doing this kind of conversion, I think a Trex 450 is much more suitable as the starting point.

Here´s a challenge.. Can a glow motor be fitted to a gaui hurricane 200 (etc.) micro heli :)

[John 3D]

Can a glow motor be fitted to a gaui hurricane 200 (etc.) micro heli :)

I think that would only work using COX engines. There has been throttle-able .049 engines before but they are bigger because of the throttle mechanism.
So if it could be done then it would only have full throttle as an option and you would have to fly until the fuel runs out. But that's not very long with the COX engines. Another plus is that it wouldn't need a clutch. Well... it would still need a one-way bearing so it can auto rotate.

[Jirik]

Now that I think aboat my plans back then.. First I bought a "piktor miwi" 1/16 nitro buggy just for it´s engine.
Did some research and thought the engine didn´t have enough power to make 325 bladed heli fly.
That small 049 (or 0.5cc) engine was just perfect size to fit inside 325 size helicopter..

http://www.rccartips.com/mini-rc-gas-buggy.htm

Second engine was a lot bigger and more powerful. Too big in fact..

----

That 200 size nitro heli would sure be something special. It propably can´t fly very well.
Don´t know how much those small cox etc. engines weight compared to brushless setup w. 2S 800mAh battery?

Autorotation with overweight hurricane 200.. Sounds difficult.

[nexgen]

there is a 450 gasser i guess:
http://helihobby.com/commonImages/partsLarge/DH-H208GP_1.jpg

I posted a thread in the heli lounge about this same subject
http://www.crackroll.com/forums/showthread.php?t=686

[JustinMoore12]

Nitro is the proper term. Gasser refers to something completely different.

[nexgen]

I suppose it does, I just seem to refer to them all as gassers as they take some sort of combustible fluid to make em go.

[John 3D]

Yes but "gas" directly refers to (and is just short for) Gasoline as in the fuel made from refined petroleum.

In the UK they call gasoline "petrol" (short for petroleum) So you could say that glow-fuel is a petrol product. And that means a nitro heli is a "petroler" :clap:

[aaronredbaron]

I wrote a review of the Protech Zoom 450 nitro (basically the same as the Blackhawk...) for RC Heli magazine. http://www.protech.be/html/t0522450icpro.html it flew surprisingly well, and was reliable, although it was really heavy. It ran 350mm blades instead of 325's, and I was able to coax it through any maneuver I wanted, although it was noticeably heavy and slow. The engine was a little .12 which did not seem too hot (power or temp for that matter). In my opinion, the TREX 500 is perfect for this size range. I have also flown the Esky GSmart which has an .18 and uses 500mm blades. The GSmart is way too much heli for the motor to expect much in terms of power, but it flies fine. I think the 425 blade size is perfect for a hot little .18, and the weight would be manageable. Try holding a .18 next to a 500 'rex... it looks like if belongs right at home in the stock frame :rolleyes:

[aaronredbaron]

oh- forgot to mention...ever heard of a LMH 110, 116 or 117? their electric 120 Corona was pretty popular, but its seems like people have all but forgotten about their little nitro wonders. I learned to fly helis on one myself. The 110 had a Cox engine, and the 116 and 117 had a Norvel. They used an exhaust restricter to control the throttle, they were fixed pitch and more durable than ANYTHING I have ever owned (including airplanes!!!) They still have their website up but they are no longer available. I highly recommend one if you can get your hands on one! http://litemachines.com/hobby.html
I even toured their factory when I was in Indiana one time!

[CSpaced]

The LMH110 was my first chopper :D It was the toughest little heli I've ever seen! How about that mechanical gyro on the tail? - worked great!

http://www.crackroll.com/forums/attachment.php?attachmentid=750&d=1219242522
http://www.crackroll.com/forums/attachment.php?attachmentid=2798&d=1235139221

[86camaro]

what about some of the hot .061 engines that have rc style carbs i have a little wasp .061 that i think would probably push a 450 maybe ill try that in one of those hk450s

[actionplus]

I was thinking of using the WASP too. Has anyone tried it yet?

[3D-Seth]

A friend of mine put glow in a T-Rex 500. I'm thinking he used a little OS 27? 32 maybe? Not quite sure. He said it flew darn good too. Power of a 90 in a 500 class heli. Looked like it flew well too...

[John 3D]

Converting a 450 or a 500 to glow is just something to do for show or personal preference. My 500 with the Scorpion motor fly's like its a 90 class heli.