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Old 12-18-2007, 09:17 PM   #1
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Exclamation o.s. .12 tg vs. stock motor that comes with gt2

i there a big difference between those to
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Old 12-18-2007, 11:52 PM   #2
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I dont own a Gt2 but i say yes a rtr always has a low spec motor.
Os are pretty good and have herd the TG is a ripper..
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Old 12-19-2007, 12:35 AM   #3
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I have used the tg in my mugen mtx 4 onroad for a year now, they dont take long to run in 3 to 5 tanks then let em rip, on the down side the power starts to fade after around 5 to 6 litres of fuel under race conditions. Then i retire them to the stadium truck with a tz short crank. The power comes in very even so not producing wheel spin if you give it a finger full out of a dusty corner.
please note when the motors flame out from being run to lean they are a bugger to restart
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Old 12-19-2007, 06:45 AM   #4
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does the gt2 need a long crank or a short crank????

Is the O.S. .12 TZ (P)-T 3-Port Turbo Rear Exhaust Engine over kill

how much does a new rotary carb cost???

or can i just tell my hobby shop to order me one with i rotary carb?


thanks peter
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Old 12-19-2007, 12:24 PM   #5
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Quote:
Originally Posted by playboy View Post
does the gt2 need a long crank or a short crank????

Is the O.S. .12 TZ (P)-T 3-Port Turbo Rear Exhaust Engine over kill

how much does a new rotary carb cost???

or can i just tell my hobby shop to order me one with i rotary carb?


thanks peter
i dont own a gt2 so i couldnt say
madracer do you know

depending on your track the tz has a lot more power than the tg but trying to get that extra power into grip is that black art we call car setup.

tower hobbies stock very reasonable priced os motors and spares
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Old 12-19-2007, 12:31 PM   #6
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The AE .15 engine wont last near as long as a high quality .12 engine. You need an engine with the SG Crank and a rotary carb. If you buy an engine like the TZ and it has a slide carb, it'll be like a light switch and your truck will be very hard to drive. That's why I suggested the OS TG. If you buy the OS TG with rotary carb and SG crank, you don't need to buy any extra hardware. The FT Kit comes with the SG clutch nut adapter.

They used to make OS TZ with rotary carbs. You could always get the OS TZ and ask them to order you the rotary carb for the TZ. Do some homework on Tower Hobbies website to figure out the carb part number.

I would suggest you get the OS TG. You will be very happy with that engine in the long run. You will also get excellent fuel mileage.

If you're running your truck up and down the road, by all means get the OS TZ.
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Old 12-19-2007, 01:18 PM   #7
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i ran a OS 12TG in a CRT.5, and i must say for such a small engine it really ripped...i still have it, and it runs great, but i just doent have any use for it, so it sits as a back up until someone buys it...
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Old 12-19-2007, 07:47 PM   #8
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Quote:
Originally Posted by Bosh View Post
i dont own a gt2 so i couldnt say
madracer do you know

depending on your track the tz has a lot more power than the tg but trying to get that extra power into grip is that black art we call car setup.

tower hobbies stock very reasonable priced os motors and spares

Im pretty sure the GT 2 takes either but the carby becomes a problem with the standard crank. I may be wrong as i havent owned a GT2..I really feel that all trucks should be able to use a Sg crank as they are so many more choices..
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Old 12-20-2007, 01:54 AM   #9
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I'm not sure how the carb would be a problem with either crankshaft.

The GT2 can be set up to use a slide or rotary carb. Like most will tell you, try to use a rotary carb. Easier to control. Using a slide carb will be very frustrating to drive, but it will burn tires very fast if you're into that. The .12 engines have awesome power, as does the TT .15 engine in the RTR. So you will no be lacking power with either choice. If you have any intention of racing get a .12 with rotary carb if you can.

Using the SG (pilot) crank is easiest to setup in the GT2. I've seen some people use the threaded crank, but you need adapters, shims (a lot), patience. I have no idea how to mount a threaded crank. But the SG crank is a breeze to install.
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Old 12-20-2007, 03:21 AM   #10
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Playboy

Their is a new engine from Novarossi N12ST built for stadium trucks specifically the GT2, it is based on the old Mt12, has a rotary carb and a SG crank. my engine has 2 ltrs on it so far including a 30min final on the weekend, motor will still not turn over by hand. Clutch assembly their are no issues, only need the shims that come with the kit.
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