RunRyder RC
 5  Topic Subscribe
WATCH
 1 page 573 views POST REPLY
HomeAircraftHelicopterEngines Plugs Mufflers Fuel › Reviews or experiences please
03-04-2008 07:45 PM  10 years agoPost 1
gipper6

rrApprentice

Mckinney, Texas

My Posts: All  Forum  Topic

TT 70 engine - boom or bust?

The best way to make a small fortune in RC Helis is to start out with a large one. Debt from above!

PM  EMAIL  Attn:RR  Quote
03-04-2008 07:52 PM  10 years agoPost 2
Buzzin Brian

rrProfessor

College Station, Texas

My Posts: All  Forum  Topic

Bust!

Build it, fly it, crash it. Repeat as often as needed.

PM  EMAIL  GALLERY  Attn:RR  Quote
03-04-2008 07:54 PM  10 years agoPost 3
Mark C

rrKey Veteran

Houston, TX - USA

My Posts: All  Forum  Topic

Second that... Bust!

PM  EMAIL  GALLERY  Attn:RR  Quote
03-04-2008 07:58 PM  10 years agoPost 4
Mark C

rrKey Veteran

Houston, TX - USA

My Posts: All  Forum  Topic

To further reiterate. My friend and I had identical Freyas. The only difference was he had a YS61 and I had an OS70. His ran beautifully. Smooth and powerful for a 60 sized heli. Mine was a DOG. Ran rough. Never seemed to tune worth a squat. I later sold my Freya to him and he ditched the OS70 out of it and pushed his YS61 into it and it flew beautifully. I swore off the OS70 for good after that.

PM  EMAIL  GALLERY  Attn:RR  Quote
03-04-2008 08:00 PM  10 years agoPost 5
3D Heli Ireland

rrVeteran

Ireland

My Posts: All  Forum  Topic

Tried to dial in a fan on a brand new never run TT70 for a friend once and it is the first and only time an engine/fan combo has ever beaten me, it just would not dial into anywhere near an acceptable tolerance. I tried three fans and collets, and finally showed the guy how bad the engine was by lifting his fan and collets and putting it onto an old old old YS91 I had and it dialled in at 0.02mm first time out no adjustment!

The slack in the front bearing on that TT70 was out of this world and from my experiences should be avoided, a definate bust!

Skookum Robotics,Sav�x, Motors and Servos,Optipower,SwitchGlo,CML st

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
03-05-2008 12:22 AM  10 years agoPost 6
dkshema

rrMaster

Cedar Rapids, IA

My Posts: All  Forum  Topic

To further reiterate. My friend and I had identical Freyas. The only difference was he had a YS61 and I had an OS70. His ran beautifully. Smooth and powerful for a 60 sized heli. Mine was a DOG. Ran rough. Never seemed to tune worth a squat. I later sold my Freya to him and he ditched the OS70 out of it and pushed his YS61 into it and it flew beautifully. I swore off the OS70 for good after that.
Nice story, but the question was about the Thunder Tiger 70, not the OS.

-----

BTW -- My Freya has an OS 70 with a Hatori SB-70 muffler. It's not a dog, flies well, has so for the past four or five seasons. From the description of your problem -- "ran rough, never seemed to tune worth a squat", it appears that the problem you were experiencing was not the motor, but the person tuning it.

Mine neither runs rough, and tuned easily, I've not had to dink with the needles for most of the past four or five seasons. The worst thing that has happened to the OS is that last fall, it finally ate its rear bearing. Up until that time, it was a little noisy, but never gave me a problem. A new bearing, a new ring, I fired up the 70 and within a couple of tanks of fuel, it was once again running as well as it always had. Nice motor.

-----
Dave

* Making the World Better -- One Helicopter at a time! *

Team Heliproz

PM  EMAIL  GALLERY  Attn:RR  Quote
03-05-2008 01:01 AM  10 years agoPost 7
Mark C

rrKey Veteran

Houston, TX - USA

My Posts: All  Forum  Topic

Nice story, but the question was about the Thunder Tiger 70, not the OS.
Well to this I can only say ... DOH!!

PM  EMAIL  GALLERY  Attn:RR  Quote
03-08-2008 06:40 PM  10 years agoPost 8
robhurlin

rrKey Veteran

Pretoria, South Africa

My Posts: All  Forum  Topic

My TT90 was a POS. Tried everything. The only thing that worked was an OS91 SZH - then I had a real heli!

Rob.

PM  EMAIL  GALLERY  Attn:RR  Quote
03-08-2008 07:05 PM  10 years agoPost 9
Eury

rrProfessor

Dover NH

My Posts: All  Forum  Topic

I've had all the TT engines, including the new 53 Redline. They were all more difficult to tune than the OS and YS competition, but once tuned in ran well. None of them made the same power as the YS or OS, or lasted anywhere near as long. The exception is the 53, I haven't had it very long, but it is a much higher quality engine than the previous ones. Tunes easy, is well made, and makes great power. Hopefully it'll last, and we'll see a whole series of Redlines.

Nick Crego

Citizen #0168

PM  EMAIL  GALLERY  Attn:RR  Quote
WATCH
 1 page 573 views POST REPLY
HomeAircraftHelicopterEngines Plugs Mufflers Fuel › Reviews or experiences please
 Print TOPIC  Make Suggestion 

 5  Topic Subscribe

Monday, June 25 - 6:59 pm - Copyright © 2000-2018 RunRyder   EMAILEnable Cookies

Login Here
 New Subscriptions 
 Buddies Online