RunRyder RC
 5  Topic Subscribe
WATCH
 1 page 629 views POST REPLY
HelicopterEngines Plugs Mufflers Fuel › OS 70 -VS- TT 70 .People that have used both,advice please
10-23-2009 02:05 PM  8 years agoPost 1
LonR

rrElite Veteran

Macomb,Mi

My Posts: All  Forum  Topic

Does the TT 70 hold and make good power like the OS 70 does?Which motor would you go with if you were looking and why?

600LE,OS55,OS PowerBoost pipe,Align 610's,Spartan

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
10-23-2009 02:12 PM  8 years agoPost 2
BONO1

rrApprentice

AR

My Posts: All  Forum  Topic

I've had both and the OS seems to make a little more power on the same muffler. I never had problems with the TT but the machining is not OS quality. I ran both on the rich side and they still made more power than the OS 61 that I had. If I could have a choice I would go with the OS but do not run the 70 lean. Hope this helps.
Sam

blow smoke

PM  EMAIL  GALLERY  Attn:RR  Quote
10-24-2009 02:03 AM  8 years agoPost 3
LonR

rrElite Veteran

Macomb,Mi

My Posts: All  Forum  Topic

Yes,helped alot and thank you for the reply .

600LE,OS55,OS PowerBoost pipe,Align 610's,Spartan

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
10-24-2009 11:48 PM  8 years agoPost 4
30636086

rrKey Veteran

Tacoma, WA

My Posts: All  Forum  Topic

Only one person has or have use them???

I dont suffer from mental iIlness, I actually enjoy mine!

PM  EMAIL  GALLERY  Attn:RR  Quote
10-25-2009 02:32 AM  8 years agoPost 5
LonR

rrElite Veteran

Macomb,Mi

My Posts: All  Forum  Topic

Anyone ealse?

600LE,OS55,OS PowerBoost pipe,Align 610's,Spartan

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
10-26-2009 01:38 AM  8 years agoPost 6
30636086

rrKey Veteran

Tacoma, WA

My Posts: All  Forum  Topic

...

I dont suffer from mental iIlness, I actually enjoy mine!

PM  EMAIL  GALLERY  Attn:RR  Quote
10-26-2009 05:47 AM  8 years agoPost 7
brcg123

rrKey Veteran

Wagoner OK USA

My Posts: All  Forum  Topic

I've only ran the OS70, and its a power house for sure. I have one in my Rappy60 and it flys great.








Trex700N, Trex600N, Raptor70, RaptorTitan, GMPCrickett, Visa

PM  EMAIL  GALLERY  Attn:RR  Quote
11-04-2009 02:51 AM  8 years agoPost 8
30636086

rrKey Veteran

Tacoma, WA

My Posts: All  Forum  Topic

So only 2 person have run .70's????????????????????????????

I dont suffer from mental iIlness, I actually enjoy mine!

PM  EMAIL  GALLERY  Attn:RR  Quote
11-04-2009 03:03 PM  8 years agoPost 9
MickeyMoo

rrApprentice

Ohio

My Posts: All  Forum  Topic

I have the os 70 in my Raptor 60. Works great only complaint is that it has so much compression its hard to start. My starter has more than enough torque. I have even damaged the bearings in the clutch once. Now I just loosen the plug a little to start it. It should loosen up when I get more time on it. Once started its great with lots of power. Easy to tune with 3 needles. I had a used but very low time TT 70 once but it had been damaged and I was never able to make it perform well. It was going to cost too much to have it serviced so I bought the os. I went with the os because I thought it would perform better and be more reliable. I like the 3 needle carb and I think OS has better customer Service.

PM  EMAIL  GALLERY  Attn:RR  Quote
11-04-2009 06:24 PM  8 years agoPost 10
pkfrizzlefry

rrApprentice

Newington, CT (Central Connecticut)

My Posts: All  Forum  Topic

Yup
much compression its hard to start
i had this same exact issue...I opted for the Align starter since mine is 12 years old ziptied with 2 old NIMH batts...i got sick of the zipties diggiing into my cold hands trying to start the 70..BWT the align starter turns it with ease...

It ran great..except last Sunday my clutch shoe and Piston went..but i hear the piston has been beefed up in the newer os.70 since mine was bought... Waiting for piston and ring

https://rc.runryder.com/helicopter/t550794p1/

i think you wont be disappointed

Fly, Fly then Fly some more!!

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
11-06-2009 01:21 PM  8 years agoPost 11
ava#

rrNovice

wa

My Posts: All  Forum  Topic

I am flying a TT70, but I couldn't make the carb work. I put on an OS 2 needle carb and it works great!
Any OS carb with a .590 throat OD is better than the TT carb.

PM  EMAIL  GALLERY  Attn:RR  Quote
WATCH
 1 page 629 views POST REPLY
HelicopterEngines Plugs Mufflers Fuel › OS 70 -VS- TT 70 .People that have used both,advice please
 Print TOPIC  Make Suggestion 

 5  Topic Subscribe

Wednesday, April 25 - 11:54 am - Copyright © 2000-2018 RunRyder   EMAILEnable Cookies

Login Here
 New Subscriptions 
 Buddies Online