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Heli Wholesaler . 3D Heli Depot . JR-Spektrum

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Main Discussion > TTengines, what is your opinion?
 
 
JEraptor
Senior Heliman
Location: Kankakee IL

TT46/50

200SE,
You have pretty much confirmed my suspicions about the TT50.
I have a TT46 in my raptor, and it's characteristics sound very much like what you are describing.
I feel that my 46 HAS been a RELIABLE engine, it has never quite on me in flight. One time, I had the throttle linkage come loose in flight, and all I could do was bang it around in the sky to keep it from overspeeding BUT it did not quite untill the tank was dry.
It has been reliable about running, just because it runs does not mean it runs RIGHT.
The midrange has never seemed right regardless of the time I spent swapping those 3 low speed needles, adjusting them, using a pump, or the hole I drilled in the carb. There have been a few times it has run well in the midrange but at the expense of a slobbery rich idle. Pinch the fuel line while carrying it to the flightline, pinch it till it almost dies when you set it down then jump back and spool it up quickely before it chokes on its own life blood.
It HAS ALWAYS had the WOT power I thought it should, but NEVER the manners.

SKYOCHIN,
I believe you are right about the airplane theory, If I need another airplane engine, I would not hesitate to get another TT.
I have two 46PRO's in my airplanes, and I have never had a moment of trouble with them, and they put out great power for the price of OS's not so great 40LA.
If I had only seen OS40LA's run, I would SLAM OS and NEVER buy another, but I have seen other good running OS's and it looks like they just dropped tha ball with that one. I was hopeing that TT had just dropped the ball on the 46H, and that is why I posted this to see what the opinion is of the 50H. Based on this feedback it is beggining to look like TT dropped the ball on the WHOLE heli engine market.

I also realize that there are some people that will never get any engine to run right, just as there are those who could tune a rock to run well in their helis.

I will not be ordering a new engine today, but untill I hear or see for myself some more good info on the TT50H I am afraid I am stuck spending an extra $70.00 to get the OS name, and the smooth running characteristics that come with that price tag.

Keep the info coming guys, it is all appreciated and I will not stop reading.
Jerry
01-12-2002 Over year old.
 
 
Boomstrike
Heliman
Location: Brownstown, Michigan

Gee Steve Campbell your taking this a little personal arent' you? Nobody posted anything reguarding anything you said. I seen your post reguarding the Heli Proz V.S Ron Lund post on the other site. You can be quite the Flame thrower your self. You lost my respect.

Steve
01-12-2002 Over year old.
 
 
JEraptor
Senior Heliman
Location: Kankakee IL

OS50

Well, I saw an OS50 run today.
I will admit that very little time has been spent with it as of yet, and it does show promise but I have also seen that in a Raptor even the OS50 must be set very rich in order to prevent the wah wahs in the midrange and on descent.
It did seem to run pretty smooth and of course it had power but it is not a miracle cure for whatever problem the overstresses airframe has that causes the wah wahs.
It still seems to be a tossup for me as to get an OS or TT50.

For the record this engine was equipped with the Hatori muffler that was designed for the OS50. The raptor also has the 8.6 gear ratio, 600MM MS blades and the constant drive tail from Ronlund.

What I need now is to spend some quality time with a TT50H equipped raptor.
01-12-2002 Over year old.
 
 
Steve Campbell
Elite Veteran
Location: Baton Rouge, LA

Yes, boomstrike, I did take it personal. If you didn't get the inference in sykochin(?)'s post that magazine writers are not to be believed, you didn't read it very closely. That, on top of the fact that he STILL hasn't given us his experiences with TT engines to back up his opinions, did torque me a bit.

As far as "flaming" in the other thread, I can only guess that what you're referring to is my statement that HeliProz was taking shots at Rick's long before Ron aired that infamous list. That is documented fact; make of it what you will. Or perhaps my repeating the HeliProz statements about less-than-quality gray market products, the so-called QC problem with 401 gyros, was it. Those are, again, documented facts which are easily verified; and are total BS.

Whatever. I've lost your respect? That's your choice to make.

Steve
01-12-2002 Over year old.
 
 
steve9534
Key Veteran
Location: yakima, wa.

Steve C

Sometimes you can't win no matter what you do or say, but I wouldn't worry about it much, if I were you. It's pretty clear within a few posts who knows what they're talking about, and who the keyboard fliers are. The ones who know give reasons and facts, and the ones who don't resort to insults and personal attacks. Steve.
01-13-2002 Over year old.
 
 
Nige
Senior Heliman
Location: Hull, UK

TT50

I have just replaced my old OS46 in my Raptor with a TT50. With the 46 I ran the long boom and the standard 9.5:1 gear ratio and a 60 size Weston pipe with 600mm V blades. When I fitted the TT50 I changed to the 8.5:1 ratio and used the same 60 size Weston pipe (powermaster 15% fuel).
So far the TT50 carb has performed far better than the TT36 I had in the machine (better than the OS46 carb as well!). There is no sign of the poor transition that the 36 displayed, The idle is a little on the rich side to acheive a good mid range setting but acceptable (head speed at approx 1850). Power is a little down on the OS50 that's in my Ergo, but much better than the OS46.
I have only done mild 3d with it so far so as not to load up the new engine too much.... half a gallon through it so far..but the engine looks promising
01-13-2002 Over year old.
HOMEPAGE  
 
 
Boomstrike
Heliman
Location: Brownstown, Michigan

Update

Most magazine writers do not have credibility, except for Steve Cambells columns, they are all a bunch of bunk.


Boom
01-13-2002 Over year old.
 
 
sykochin
Senior Heliman
Location: GoWest

Ouch......

Dude.... Take it easy... It's only a F....... Toy!!!. You can not even make a living from flying heli. Unless you are Curtis.
When I wrote my comment, I did not even know that you are a Rep.

One thing to remember:
IF It was not true, you don't have to get excited!. Besides I only said "Never say any negative comments". Did I say lying........ etc.??????????
Boy... you really getting out of control!
We have an old saying here in Dutch. It translates like this:
"When you pour a lemon juice to you arm, you won't feel anything unless there's a wound!"
Since you brought it up and getting too personal. This is getting interesting!
Just curious. Why are you a TT Rep.?
Dude…. There must be a motive!. ...I don’t believe you are an angel trying to help the world with TT Engine!
Regarding the MHT never flourished! The are so many reason, Not what you’ve said. It sucks from the business point of view. It is not attractive at all. Small audience and his(you know who I'm talking about) attitude never impress those big companies. It never gets any free products for review, because no company wanted to. Those companies know they will not get the benefits out of it, they rather give or advertise it in RCM , MAN, AMA…. Step aside for a moment and look at from the business point of view.
I remember when MHT just started. I think 95-96 in Chicago show. We all looked at each other and laughed, because it looked like toilet paper. Then when Curtis stopped writing for MHT, it became smaller and smaller.

Now about me! I’m not in this hobby as long as you do.
I remember my first R/C in 1971 with the rubber band, my first heli was Clark w/os 25, Kavan Alouette in 1976, then Heliboy, Helistar in 1985, GMP Cobra, Kalt Baron. I still remember when I got my Kyosho Concept ARF with OS 28, Kalt enforcer, my Xcell, Xcell pro, Xcell graphite, TSK, Hirobo Condor, Eagle, Shuttle, Century Ninja, Hirobo GPH(which is a copy of Century Ninja design by the way), Vario, Raptors…….etc
I still remember when OS came out with their first three needle carburetor. it suck, everyone was using super tiger carburetor instead….. …..
I remember when my friend was helping Mr. Lai (Steve. You better memorize this guy’s name, he is your big boss. The owner of TT). My friend helped to bring TT into the US. You guys did not even know TT then, the only thing you know was the hobbyshack engine. Then it finally came to the US(Texas), then took over ACE.
I remember when Mr. Lai finally managed to pursue the OS Chief Engineer to work for him in the early 90’s, Get him a house in Taiwan then started re-designing all TT engines. That’s the reason why TT engine look similar to OS.
I still remember when only two Raptor in the US sent to my good friend in the east coast in a plastic bag. He managed to build without any instruction and tested it. He loved it so much and called me. I managed to get my hand on those machines, but we’re running OS engine then. Then he managed to finish the raptor instruction book in a short time.
Anyway I love to sell TT engine, because the margin was big. I managed to make 100% profits. But when the time came to set up my customer’s machines, Boy… what a headache, we spent so much time to make it work right. Most of those people finally bought OS. (GOOD FOR ECONOMY!) Then here came the 46, got the same problem then the 50. The 50 still has the same problem, but it’s not as bad as the 46 and 36.
After seeing all of this. I’m not using this engine, when I go flying. I want to fly not bending down and start playing with the engine.

It is very funny in this hobby. When someone starts putting the company logo on their ships, field box, hat…etc. Then he walks differently. I wonder why?????
When someone won class I, II or III. He thinks the whole world is under his belt! Start looking for sponsorship or became a field rep. Hmmmmmmmm
I’ve deal with these people for such a long time!

Happy flying. Spend your time in the air. Not at the ground!
ps.
By the way I still have my free raptor from Mike Stork of ACE. He used to be the head of the Heli division. But I put the TT engine on ebay. Got $70.00 out of it. Not bad...
01-13-2002 Over year old.
 
 
miataguy
Veteran
Location: Santa Barbara, CA

Well I just got my TT50 running yesterday. Didn't take too long to start it up but I think I have a problem. It's running REALLY hot (250+) on CP15, Enya3, gr8lakes muffler. The high needle is out 4 turns and the idle out 3. I had to advance the throttle to 1/4 or more to get it started. I'm suspecting an air leak in the fuel system somewhere is leaning it out. Anyone else have any suggestions?

Official RunRyder Googlewhacker!
01-13-2002 Over year old.
HOMEPAGE  
 
 
Steve Campbell
Elite Veteran
Location: Baton Rouge, LA

steve9534,

Thanks; I know exactly what you're talking about.

sykochin,

That long, amusing post proved me right about one thing; you're NOT paying attention. I am not, and never have been, a manufacturer rep of any sort.

Some days you get chicken; some days you get feathers...

Steve
01-13-2002 Over year old.
 
 
sykochin
Senior Heliman
Location: GoWest

Steve;
So Stop Crying..... you big baby.
01-13-2002 Over year old.
 
 
steve9534
Key Veteran
Location: yakima, wa.

sykochin


I rest my case. Steve.
01-13-2002 Over year old.
 
 
sykochin
Senior Heliman
Location: GoWest

steve9534;
Sorry dude...
That was for Steve Campbell.
01-13-2002 Over year old.
 
 
2000se
Senior Heliman
Location: Charlotte, NC

TT50 Miataguy

So what do you guys recommend we do about the rough mid range in this engine....I love the high end....I am working to get the best of both worlds here ( maybe a lost cause but trying )...

I too have to advance the throttle stick ~1/4 up to get the engine to start..but mine has never ran hot.....I would say to he!! with what the recommended needle settings are and work with it untill you get it to run the way you want.....that is what I am gonna do...if I can get it to run like I want then all I have wasted is a few hours of my life..big deal..but if those couple hours turn out to getting this engine running right, I have gained some more engine tuning knowledge and saved ~ $70 .....but if the hours turn into days and weeks(not) then I will accept defeat and buy an OS .. I guess I really don't know now what I think ....dang...that would like $120(for the TT50) + $180(for the OS 50)...fart..that's like $300....ok .. i am gonna stop talking now... I WILL GET THIS ENGINE RUNNING !!!
01-14-2002 Over year old.
 
 
miataguy
Veteran
Location: Santa Barbara, CA

OK found out the problem. The head was loose. I tightened it down and will take it up again soon. Turning the fan, I noticed a DEFINITE improvement in compression. This all makes sense. Next problem: the clutch bell spins fine when the bolts holding the engine to the mount are loose. When I tighten them up, the engine becomes misaligned and the clutch begins to rub and eventually locks down against the bell. Should I enlarge the frame holes to adjust the position or add some shims or redo the liner or what?
-Peter

Official RunRyder Googlewhacker!
01-14-2002 Over year old.
HOMEPAGE  
 
 
2000se
Senior Heliman
Location: Charlotte, NC

shims

pete,
did you use the shims provide w/ the mount to align the engine with the motor mount? Read: Is the motor bolted in the center of the motor mount?.....

Also, Yes..you will need to tighten ALL the bolts, When I got mine everything was loose, the back plate, the head, and also lock-tight the throttle barrel screw!!!
any other Q's just ask....
01-14-2002 Over year old.
 
 
woody
Senior Heliman
Location: Nothwest Pa.

muscle pipe?

can I use a muscle pipe for an os 61 wc and on a tt 50 as well? I have both engines, and want to try it out on both choppers, leaving it on the one it benefits most.
Woody
01-14-2002 Over year old.
 
 
miataguy
Veteran
Location: Santa Barbara, CA

Yes I used the shims to mount the engine, but maybe I didn't do it right. It looks like they fit into the little space between the engine and the mount. I tightened them down and then they slid right out. Seems like it would've centered ok without them.

Official RunRyder Googlewhacker!
01-15-2002 Over year old.
HOMEPAGE  
 
 
Furyextremester
Senior Heliman
Location: Va beach

Thunder Tiger 90 H

Well Im gona be the guine pig on this engine! I have not read any articles on this engine yet so i decided to try it out, Besides for the Price ($190) you cant beat that for a 90 sized engine! Ill post something when i find out about it
03-15-2002 Over year old.
 
 
Michigan PI
Senior Heliman
Location: St Clair Shores, MI

Muscle Pipe

The MP works VERY good with the TT50. One word of caution, if you are running it in a Raptor with the 8.5:1 gearing, you need to start out with about 10mm gap between the header and the pipe then fine tune the length to match your target headspeed. The TT50 likes alot of needle, for initial start and break in go with 4 turns on both needles. I have about a gallon through mine and have dropped it down to around 3.5 on both.
The TT90 'should' be about the same, 4 turns out on both needles.
The new line of TT engines seem to be very torquey and like a rich mixture. Don't lean them out too much to try to peak your power as they are not extremely tolerant of running lean. Tighten/check tight ALL bolts on these engines. I have found the engine bolts to consistantly be loose from the factory.
03-15-2002 Over year old.
HOMEPAGE  
 
 
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