jeffie8696

Anybody? Just Me? Mine runs great. [8D]

carrellh

My brother and I have had experience with four TT engines.

GP-42 - one of the easiest starting, most reliable, engines I've ever seen. It has decent power on a 5 pound model and is a great trainer engine.

46PRO - another great engine. Powerful, easy to tune, absolutely no complaints.

36PRO - not sure what happened with this one. The thrust washer dug into the front of the case and it chewed itself up.

61PRO - I have mixed feelings about this one. It was originally hard to start, poor transition, poor midrange, and deadsticked fairly often. "Everyone" said it was too rich on low end and was 'loading up.' Leaning it made it worse. Eventually richened the low end A LOT and it improved quite a bit. It became easy to start and ran pretty good but it was never as smooth and easy to deal with as the 42 and 46.

I'd recommend the GP-42 to anyone who needs a lightweight inexpensive engine. The 46PRO is a fantastic choice if you need more power (and can handle a little extra weight) at a decent price.

jeffie8696

Port and polish that GP 42 and see what happens!

microsprint9

Love my TT .46PRO, starts first flick with a chicken stick ( if i prime it properly ), tons of power for my Hanger 9 Twist. The TT .36PRO i have had some problems with, sent it back to be fixed, they put on a new crankcase, piston, liner and front bearing, got it back and did the exact same thing, close the throttle all the way, engine still runs for 15-30 seconds, while it's not the worst problem to have, i still like being able to kill the engine on demand, other than that it starts good, makes great power and files my Avistar around at 1/2 throttle no problem. Almost forgot, i also have a TT .07GP, it's still on the break in stand and only has about 6oz thru it, while not very powerful for it's weight i still think it will be a good engine for the right plane, i'm looking to get a SIG nitro rascal to mount it on. So overall i'm happy with TT and i will definetly buy another TT in the near future.

XJet

I have: 42GP, 46Pro, 61GP, 91FS and they all represent about the best value for money in their respective classes.

The 42GP has been powering our club trainer for nearly five years and despite numerous dirt-naps, it's still running very strong and 100% reliable.

I have about five 46Pro engines and there must be nearly two dozen of them in our small club. Not one has every been problematic and even those guys who used to use OS46's have "converted" after seeing what a TT46Pro with a Tower muffler and some decent fuel will do.

My 61GP gave nearly two years of faithful service until it finally exploded in spectacular form. I was planning to buy another but am about to try an MDS 61 FIRE instead. If that's no good, I'll go back to the TT61GP.

My 91FS hauls a 60-sized P51 mustang around at almost exactly the same speed as an ST90 2-stroke. Although the TT 4-stroke is fussier than my Saitos and weighs a ton, it is quite a power-house.

Next on my "must haves" is a TT75FS. These little beauties are *light* and look like the perfect engine to replace a .40-50 sized 2-stroke on most planes. They're also *much* cheaper than the equivalent OS or Saito.

jeffie8696

So how would you rate the power of the GP 42? Mine has some mods and I would like to know what the norm is to see if mine is any better than it was stock since I did not get any "dyno" numbers off it before I went crazy. (Forrest Gump voice , Again)[sm=lol.gif][sm=bananahead.gif]

carrellh

My brother's stock GP-42 turns a 10x6 at about 13k using 10% nitro and a 11x5 about 10900 using 15% nitro. Both figures are slightly rich for flying, not peaked.

jeffie8696

Great numbers. I managed 11700 with a MA 11X6 on 5% . I still think I need to work on the compression ratio. The head gasket is missing.
Other Great News. My Vintage TT .15 came today! Can't tell it has ever been run but there some evidence of castor inside. Wonder if the factory might have given it a test run? Cute little cuss.

foresterxt

My Feedback: (35)

[quote]ORIGINAL: jeffie8696

Great numbers. I managed 11700 with a MA 11X6 on 5% . I still think I need to work on the compression ratio. The head gasket is missing.
Other Great News. My Vintage TT .15 came today! Can't tell it has ever been run but there some evidence of castor inside. Wonder if the factory might have given it a test run? Cute little cuss.
[/qu

Jeff,

I recently sold a vintage TT .15 here on RCU a while back. The needle valve is really close to the prop and somehow I got careless and got my finger caught in the prop while making some adjustments. I was using an APC prop and the results were not pretty, 19 stitches in the end of my finger which basically got flayed like an onion, but I digress. I sold it because it had bad karma, but the little guy had some power. I think I was spinning close to 15,000 on a APC 8x4, but damn is the muffler loud...ear piercing. Makes my Tower .75 sound quiet.

My input on TT so far. I've got a 42 and it's an amazing engine. Dead reliable and makes great power. I've also got a 1.20 pro which I really like. You can find them for cheap and they're reliable with excellent power (on par with an AX 1.20).

Dave

rcdude7

My Feedback: (264)

The mail carrier just dropped off a NIB TT.46 that I purchased from a seller at the RCU classifieds.

This is my first TT.46

jeffie8696

I think the finger slicing is a rite of passage. Just last year I cut the heck out of 3 of mine with an APC meat slicer prop(with a remote needle engine lo less). Recently Probrojoe cut himself in similar fashion on an 049 engine spinning a Torpedo prop. I have decided that all my props need rounded edges!! [sm=red_smile.gif] Now I will not run one without taking some sandpaper to it. By the way that Band-Aid super glue stuff works well, if you don't have health insurance.

JohnMcGowan

My Feedback: (15)

I have the GP42, this thing is sitting idle for now but has run great for the 8 years Ive had it. Also I cant say enough about the 46 pro- Ive had 3 or 4 of them and my most current one just had a set of bearings replaced after 14 years of GREAT service that were installed by my good flying buddy and engine man Frankie Comer, and its still going. I have the 46 mounted on a Jerry's Litttleboy, and I have unlimited vertical with a APC funfly 12.25x3.75 prop. I also have the 61 pro which I love as well.
Great engines !!!!
John

jeffie8696

So why hasn't "Club Super Tiger" existed before now?

carrellh

Because no one started the thread.

XJet

And maybe because TT owners are busy flying rather than cussing about their engines on the internet? :-)

jeffie8696

It is entirely too cold outside to fly.

w8ye

My Feedback: (16)

We've had a blizzard most of the day and it is supposed to last all day tomorrow also.

The temperature is around 20 F and wind gusts to 30 mph out of the North. Cannot tell how much snow there actually is because of the drifting.

Sort of a snow hurricane but there is a continuous trough rather than pressure waves and the wind pretty much stays from the same direction for a longer term.

jeffie8696

Yea the Alberta Clipper cuts across Iowa before it gets to you.[&:]

w8ye

My Feedback: (16)

We are getting your Alberta Clipper Sunday night after this low pressure trough gets done Saturday night.

jeffie8696

Tried out the TT "Little Kitty" . My vintage 15. Broke it in on my custom blend 9.8% nitro with lots of castor then today I thought about it and went ahead and filled the tank with my favorite 1/2A blend 20% nitro 21% castor. It responded nicely. Gave me 600 more rpms , and the needle setting wasn't so sensitive. I have yet to try an 8X4 prop to see if it likes using torque to make it's thrust instead of rpms. One thing, I did switch to a slightly colder plug (an OS #8) , might try an even colder one to see if it has an effect. The carb seems to have a very small barrel hole, so I wonder it it is limiting it on the high end. I will compare it to my Fox 15 tomorrow. I really think this engine was aimed at the /2A crowd so that is why it likes the high nitro.
UPDATE The TT carb barrel is about 3/64" smaller in diameter. Probably will like the bigger prop given the intake restriction in comparison to my Fox. Didn't get it tried out today due to time restrictions.

jeffie8696

My little kitty is a Bobcat.[sm=48_48.gif] Tried the MA 8X4 with a tank of custom high castor 20% nitro and was astounded. I got 14800 right away and after it tuned in and warmed up a little it even went into the 15000 range. According to my thrust calculator that is good for 2.5 lbs of thrust with a flying needle setting of 14800. I think I like it. If anyone can suggest somthing to install it in I am open to suggestions. I would love to see it in a nice combat plane but with the high wing loading I don't think my skills are up to it. Does anyone make a combat plane in the .15 to .25 range that perhaps has an optional wing for training? Certainly would be nice to be able to bolt on high lift wing to my airframe then as I graduate to real combat skill just change the wing to accomidate. Much like I have seen done on the Evolution training system. Great Planes offers a nice line but the wing loading is very high.

jeffie8696

So how many weeks does it take to normally get a gasket set out of Thunder Tiger? I went through my LHS!!

bigedmustafa

My Feedback: (2)

Your local hobby shop is likely sitting on your order until they can meet the minimum order amount with Ace Hobby to get free shipping. I quit trying to buy Ace/Thunder Tiger items through my local HobbyTown USA because I got tired of waiting for special order items to appear that never got ordered by my lhs.

jeffie8696

How much could it cost to pack and ship a gasket set?[sm=confused.gif] Hell you put it in an envelope with a 41 cent stamp on it! It's these places that want to charge $6.95 shipping for a $5.00 part that kills me. it I could have just gotten it through Tower (like I can all their engines) then I could have added it to my last order easy as pie! Sorry, I like my Tigers but the parts thing is just making me a little upset. Today is a perfect flying day!!!! And I have been waiting for weeks for a $5.00 gasket set !! My LHS swears he called them and ordered the part. yes he may be lying to me that is a possibility but I tend to give people the benefit of the doubt.

wcmorrison

My Feedback: (2)

Got one Super Tigre - Italian made. Like it.

Cheers,

Chip