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HelicopterEngines Plugs Mufflers Fuel › OS50Hyper vs TT50?
01-24-2007 04:22 AM  10 years agoPost 1
fishbat

rrNovice

Edmonton, Alberta Canada

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I am researching the purchase of my next helicopter (a .50 size) and I have some issues with engines.

I have searched RR and usually come up with unrelated items - (my search prowess is probably lacking!)- I am trying to find the differences between the O.S. 50 Hyper and the TT .50 engine.

After seeing all the posts about bearing life for the O.S. Hyper!(O.S. Hyper - not so good!)

-How does the TT50 compare relative to the O.S. 50 Hyper for:

-power?
-longevity?
-maintenance?
-etc.

Thanks for any input,

Kent

Century Hawk Pro
TT E325
Blade CP
picoo z

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01-24-2007 05:18 AM  10 years agoPost 2
StillTryin

rrApprentice

Perth, Western Australia

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This subject has just about been "done to death" and is the cause of considerable argument, some of which is reasonable but much of which is no more than Ford vs GM - you know: "I'm a Ford man cos they rock" etc.

I have flown both and here are my experiences:
OS Hyper:
More expensive
15% more powerful
Thirstier if extra power used
Relatively easy to tune
May have a rear bearing problem in some engines(there is much debate on this)

TT50:
Less expensive
15% less powerful
More economical
Not so easy to tune initially.
Longevity at least equal to OS

Both are well made engines and do the job, it just depends on what you want and can afford.

Expect many varied responses but in the end, either will do unless you need the most power you can get; if so,then it's the Hyper.

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01-24-2007 05:37 AM  10 years agoPost 3
fishbat

rrNovice

Edmonton, Alberta Canada

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Thanks for that StillTryin!

I would be OK with less power if the longevity was there!

and I would be happy with more tuning (I have been a planker for a while and am used to tuning!)

-Maybe the TT is the engine for me!?

-Kent

Century Hawk Pro
TT E325
Blade CP
picoo z

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01-24-2007 08:18 AM  10 years agoPost 4
Gadgets

rrApprentice

South Africa

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If you go with the needle mod.

D?o a search





I see plank flyers!!!

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01-24-2007 08:31 AM  10 years agoPost 5
firefox

rrApprentice

Thailand

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Well, I originally had a TT50 pro (came with the Titan). It was good, performed well enough, wasn't that hard to tune. What I really loved about it was the 15-20 minute flight times on 15% nitro. I did the needle mod and it was going strong at around 50+ flights. I was progressing to 3D and didn't have good collective management, so I needed something more powerful.

I sold the TT50 and got a new 50 Hyper. After only a few flights (still running in the thing) it had bearing problems (using the same *very good quality* fuel that I used on the TT50). Had to replace both front and rear bearings. Tuning isn't as dead easy as people would like you to believe... I don't see much difference from the TT50. Power is there, but now I'm getting only 8-9 minutes on the same fuel (this is the norm here). More power, less time to enjoy it.

The way I calculate it, since I pay only half as much for fuel for the TT50, I was able to recoup the cost of the engine in only a few dozen flights vs the Hyper. It was a good choice, and I'm really feeling the pain of my current fuel expenditure. The way I see it, if you're new to this, get the TT50 and do the mild hovering and circuits on it. When you actually need the power, go to the Hyper.

I've seen good pilots do tick-tocks (slow ones) on the TT50, so 3D is possible, just not stick-banging or super-powerful moves.

Raptor Technique says that their TT50 lasted for 500 flights, so that's a darn good track record.

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01-24-2007 10:03 AM  10 years agoPost 6
baby_zyklon

rrElite Veteran

Singapore

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Go to search and type in "tt50 hyper" and you will get a good search result.

I have used both in a r50. I didn't observe a BIG power increase moving from tt50 to hyper on the stock muffler, partly also because I was running the hyper rich at that time. Changing to a hatori 522 with tuning of the needle brought the hyper to life. However, like what others have also found out, the tt50 can run 50% longer than the hyper on the same amount of fuel. It was worth it though.

I have had bearing problem with the hyper. Me and a few other local flyers have also had trouble with the stock NTN taiwan bearings. I guess it could partly be due to me not running the engine dry after each session. After the bearing disintegrated at around 70flights taking the ring with it, I replaced it with NTN japan bearings. So far it has had another 50flight on the heli and over 10hours in plank spinning a 12.25x3.75, still on the same set of NTN japan bearing.

My tt50 with the needle mod was as easy to tune as the hyper. Before that IT WAS A BITCH.

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01-24-2007 03:58 PM  10 years agoPost 7
SC Raptorman

rrVeteran

South Carolina

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I have 4 Raptor 50`s 2 with Hyper and 2 with the TT50 , The Hyper is alittle more powerful than the TT50 and is less thirsty than the Hyper 50 . They both run great to me and if you tune the TT50 just right it will perform just fine .Plus the price is right when you buy the combo Heli kit with motor .

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HelicopterEngines Plugs Mufflers Fuel › OS50Hyper vs TT50?
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