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HelicopterScale Model RC Helicopters › Which engine for Funkey Airwolf 50?
03-22-2009 09:49 PM  8 years agoPost 1
Craig1903

rrNovice

Aberdeen, Scotland

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Hi,

I am going to upgrade my TT Raptor 30 up to a 50 size for fitting into a Funkey Airwolf 50.

I am interested in your thoughts of the best engine to fit? Should I go for a high power engine like a OS 50 Hyper or TT Redline 53 or something more standard like the TT 50?

I can see that the extra power would be good to help compensate for the extra weight of the fuse, but I am concerned about the extra heat being generated by these engines.

What does everyone think?

Thanks,
Craig

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03-23-2009 12:34 AM  8 years agoPost 2
payne1967

rrElite Veteran

uk

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os37 with the 50 boom is the cheapest way

if you want a 50 i would put an os50 in it

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03-23-2009 12:28 PM  8 years agoPost 3
Crewdogg998

rrApprentice

Michigan

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You will get 50 different opinions for a question like this! I'd go with a Thunder Tiger 50. You don't need Hyper/ redline power for a scale job so why pay for it? Also, the TT doesn't have bering issues like the Hyper. I don't want to pull the mechanics out of my fuse every 3 or 4 gallons to replace berings.
Good luck with your project, Crewdogg

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03-23-2009 01:31 PM  8 years agoPost 4
payne1967

rrElite Veteran

uk

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with the os50 running on the rich side and not reving it flat out the bearings last a lot longer than 3 to 4 gallons
so far i've changed my first os50 rear bearing after 4 1/2 years use
using it 2 days a week every week

a for the tt50 they have had carb problems with inconsistant fueling/tuning
ias said you don't need the power of the red line
the better os50 would be the 50sx if you could find one or fitting the 40e carb off the sx on the hyper
or set the throttle/pitch curves not to use the full power of the hyper

but at the end of the day it's what engine you want and prefer that counts

don't worry about the heat in the airwolf just make the bottom vent hole large enough to allow the air out around the cylinder head and crankcase
and fit a high flow cooling fan

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03-23-2009 04:20 PM  8 years agoPost 5
Copter Doctor

rrProfessor

Enterprise/ft.rucker​,al- home of army​aviation

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i am using the older non hyper 50 in my airwolf and getting to mach 2 with all the scale crap i have on her has yet to be a problem also cooling hasnt been an issue either and thats running my usual cool power 15% nitro. this engine has beenin my fleet family for about 3 yrs and never had a bearing issue.

drive a rotary, fly a rotorcraft

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03-23-2009 06:53 PM  8 years agoPost 6
BarracudaHockey

rrMaster

Jacksonville FL

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I'd get an OS and run it rich. TT engines are just too tempermental for me to trust a scaler with it.

Andy
AMA 77227
http://www.jaxrc.com

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03-23-2009 07:53 PM  8 years agoPost 7
Copter Doctor

rrProfessor

Enterprise/ft.rucker​,al- home of army​aviation

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i have to agree with cuda. though the tt 50 i had ran great, if i thought i needed to richen or lean it, and go a click or two either way, instead of running with symtoms of what i did, i tlikes to just quit. not in my scaler it aint!!! the os in my airwolf, if i go a bit too rich, it runs like crap too rich. if i lean it a click or two too lean, it runs like crap too lean but it stays running. much more user friendly for those who want to see which way to go to get the right setting. at least in my experience.

drive a rotary, fly a rotorcraft

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03-23-2009 09:01 PM  8 years agoPost 8
Craig1903

rrNovice

Aberdeen, Scotland

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Thanks guys for all your input. My initial though was to go for the standard (non-Hyper) OS 50 SX-H, but it appears that OS no longer make this engine. So I guess the weapon of choice will be the OS 50 Hyper and just run it easy.

I am going to upgrade the 30 to a 50 and run it in pod-and-boom format first to make sure I am happy with it before getting the fuse.

Cheers,
Craig

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03-24-2009 01:16 AM  8 years agoPost 9
payne1967

rrElite Veteran

uk

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if you look on ebay uk there is a new os50sx-h non hyper for sale
item no 260378936878 and its in the uk
buy it now of £119.99
start bid £99.99 and no bids on it

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04-08-2009 01:55 PM  8 years agoPost 10
Craig1903

rrNovice

Aberdeen, Scotland

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Thanks for all the advice. I got the non-Hyper OS 50 from eBay, so am happy with that.

I have also bought all the bits to upgrade my Raptor 30 to a 50 and will get it all running well before getting the fuse.

One last question, is there enough room to fit a Zimmerman exhaust inside the fuse or will I need a Century Scale Exhaust?

Thanks again,
Craig

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04-08-2009 06:19 PM  8 years agoPost 11
BarracudaHockey

rrMaster

Jacksonville FL

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A buddy at our field has one in a Raptor, I'm 99 % sure he's running an standard muffler, I dont think you need a scale muffler, maybe Coptor Doctor probably knows for certian though.

Andy
AMA 77227
http://www.jaxrc.com

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04-09-2009 12:33 AM  8 years agoPost 12
Copter Doctor

rrProfessor

Enterprise/ft.rucker​,al- home of army​aviation

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for the fuselages, the long length mufflers arent the best in some cases. i have beenusing the std muffler that comes with the sceadu and raptor in a lot of my fuses. the scale muffler is okay, but that sucker is loud and is the only reason i dont like using it.

drive a rotary, fly a rotorcraft

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