View Full Version : TT Pro .46 or Gms .47 ????
09-18-2003, 09:05 PM
I need to purchase an engine for my trainer aircraft and I have narrowed it down to these 2 engines, Thunder Tiger Pro .46 or GMS .47, (mainly because of cost). I would like to get some opinions on wich of the 2 you feel is a more reliable, tuneable, longer life engine. Thanks for your time.
09-18-2003, 09:17 PM
Have seen some first hand experience with the TT 46 Pro (my flying buddy) and they seem as good as the OS FX 46. Good power and easy to run.
I cant comment on the GMS but I wouldnt hesitate to buy the TT.
09-18-2003, 09:18 PM
Haven't had the GMS but I do have 3 TT 46's takes a while to break them in but once "broken :wink: " they run great.
Jim Moss :)
09-18-2003, 09:30 PM
I also have several TT46 Pro engines and all of them run absolutely great! These engines are very tough and reliable. Easy to start and keep tuned up and lots and lots of power for any 40 size airplane. And you can't beat the price and quality!
09-18-2003, 10:20 PM
TT 46 is a great motor. I've heard a lot of gripes about the GMS. I've got one and consider it to be a great motor (especially for the price). Good strong runner, reliable, we'll see about life expectancy in another year or so. But it is picky. Not troublsome, just has a few querks. Once it is broken in and tuned properly it's great (IMHO) but if this is you're first motor I would recomend the TT. Much easier to operate, excellent power and not a bad price either. I'd buy another GMS tomorrow but only because I have experience with it and know exactly how to get it running the way I want it to. If I was a just staring out though I'd spend the few extra bucks on a TT (or an OS).
09-19-2003, 02:45 AM
i've had a half dozen of the tt46's.in a word..EXCELLENT! :D
09-19-2003, 07:25 AM
No personal experience with the GMS but 2 of our club members have them and they are very strong and run very well. I don't think it will make any difference which way you go.
09-19-2003, 08:09 AM
I have 2 GMS 47. I am new to the hobby last spring.
started out with them and found them easy to deal with. Mine both hand start no problem and I have used them on everything from a trainer to a kavalier on floats(8.5lbs) and some spads.
I am very impressed with the ease of use and tuning . Very powerful!
Excellent motors so far. Time will tell for longevity.
09-19-2003, 09:56 AM
I'm for the TT 46 although I hear the gms r great as well. I have a TT I bought in january that has over 120 flights on it with no signs of wear. Run's great and hauls my ultrastick great. It will hover and even c.imbout slowly. Thats on a apc 11x4. I'm planing on trying a 12x4 soon.
09-19-2003, 10:06 AM
I put a 12.25x3.75 on my spazzler with the GMS 47 and it has awesome vertical.
You'll like it(12x4)
09-19-2003, 04:40 PM
My very first engine was the TT .46 and it is a great engine, it is now on my extra 300. I also have 2 gms .47's which are also great runners, so either way, you will be happy. The one thing about most gms engines is that they dont like to shut off, even when the carb is completly closed.
09-19-2003, 09:55 PM
go with the tt 46 pro ... much better machining /reliability/longevity.
09-19-2003, 10:00 PM
The T T is a much better choice. Heard of several probs with the GMS.
09-21-2003, 02:09 PM
First motor was a GMS 47 usually starts 1 st flip. Never needs more than 2.
I think it has as much or more power than my os 46. Can't go wrong with the GMS. I have never flown a TT so have no opinion on them.
09-21-2003, 04:54 PM
I'd say go with the TT 46-Pro (ball bearing). I have 2, and they are a great engine.
09-21-2003, 11:47 PM
I've owned and ran both.... I like them both......will buy either again.
09-29-2003, 10:39 AM
A bunch of guys at the Brampton club have the GMS's they seem to like them, very powerful and good price. One thing odd though, no 2 engines seem to set up the same. One will have the mixture screw at 2 1/2 turns another will be at 3 another being 4, just to get them to run well.
I had a TT46 Pro, I'd buy another in a heartbeat, great little engine!!!!
09-29-2003, 10:51 AM
I've owned a couple TT46pros, great engine, both are still running in the planes I sold them in.
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