Go Back  R/C Tech Forums > General Forums > Nitro On-Road
OS TZ12 Spec II & 2607 Pipe >

OS TZ12 Spec II & 2607 Pipe

OS TZ12 Spec II & 2607 Pipe

Reply

Old 03-08-2008, 09:33 AM
  #16  
Tech Adept
 
bboy's Avatar
 
Join Date: Feb 2008
Location: CA
Posts: 218
Default

Other than price, how would you compare this with the OS.12TZ 5port? I am thinking of getting this one but came across the Spec II...

What is the difference?

Thanks.

bboy is offline  
Reply With Quote
Old 03-11-2008, 12:38 PM
  #17  
Tech Addict
 
RevMaxx's Avatar
 
Join Date: Jun 2006
Location: Cebu
Posts: 687
Default

Originally Posted by bboy View Post
Other than price, how would you compare this with the OS.12TZ 5port? I am thinking of getting this one but came across the Spec II...

What is the difference?

Thanks.

os .12tz 5port = 1.62hp @ 34,400rpm
os .12tz specII = 1.70hp @ 35,000rpm
RevMaxx is offline  
Reply With Quote
Old 06-10-2008, 06:02 AM
  #18  
Tech Rookie
Thread Starter
 
Join Date: Feb 2008
Posts: 5
Default OS TZ Spec II & T1040 pipe

I recently ran at a national using the T1040 Pipe on the Spec II. I couldn't get the engine to rev through, and at about 100 degrees C it ran as if it was still very rich. I even Geared the shortest gear ratio possible (MTX 4) I ran 16T/21T Pinion with 60T/54T spurs, and about 61mm tyres. It only seemed to perform at temps over 100 degrees which I was concerned about. The engine is still new.

Is this caused by the incorrect pipe for the track. We also run 16% nitro.
rascal_2 is offline  
Reply With Quote
Old 06-10-2008, 07:52 AM
  #19  
Tech Elite
iTrader: (9)
 
Rick Vessell's Avatar
 
Join Date: Jan 2002
Location: Mars
Posts: 2,327
Trader Rating: 9 (100%+)
Default

rascal,

110-115 C is fine, you will not hurt the engine. If it is still very new, it's very tight and won't want to rev. I have one that's coming up on two gallons now and it still sticks at TDC when it's cold! The 1040 pipe is what I use for most tracks with good power and runtime. What plug are you using? 16% fuel is fine, I run 20% in mine everywhere with a P7 plug unless it's very hot weather.
Rick Vessell is offline  
Reply With Quote
Old 06-11-2008, 03:48 AM
  #20  
Tech Rookie
Thread Starter
 
Join Date: Feb 2008
Posts: 5
Default

I'm also using the P7. What gearing do you run.
rascal_2 is offline  
Reply With Quote
Old 06-11-2008, 07:37 AM
  #21  
Tech Elite
iTrader: (9)
 
Rick Vessell's Avatar
 
Join Date: Jan 2002
Location: Mars
Posts: 2,327
Trader Rating: 9 (100%+)
Default

rascal,

17/24 pinion, 59/53 spurs, 60mm rear tire. Adjust accordingly for larger tires to maintain the same rollout.

Good luck!
Socko
Rick Vessell is offline  
Reply With Quote
Old 08-25-2008, 07:00 AM
  #22  
Tech Adept
iTrader: (1)
 
Mazda614's Avatar
 
Join Date: Jun 2006
Location: Sydney
Posts: 218
Trader Rating: 1 (100%+)
Default OS Max .12 Spec 2 Tuned pipe

Give the Nova 2601 a go with a 7 fin header, great bottom end, works very well with the Spec II, good power, run time and runs cool.
Mazda614 is offline  
Reply With Quote
Old 08-25-2008, 04:30 PM
  #23  
Tech Master
iTrader: (14)
 
freestyles's Avatar
 
Join Date: Jun 2008
Location: Sydney
Posts: 1,118
Trader Rating: 14 (100%+)
Default

Could you please elaborate what '7 fin header' means and how do i recognise how many fins my headers have????
I've never heard it before
Originally Posted by Mazda614 View Post
Give the Nova 2601 a go with a 7 fin header, great bottom end, works very well with the Spec II, good power, run time and runs cool.
freestyles is offline  
Reply With Quote
Old 12-13-2008, 02:53 AM
  #24  
Tech Adept
 
bboy's Avatar
 
Join Date: Feb 2008
Location: CA
Posts: 218
Default

Originally Posted by RevMaxx View Post
os .12tz 5port = 1.62hp @ 34,400rpm
os .12tz specII = 1.70hp @ 35,000rpm

This sounds like a small difference. Is that correct, or am I missing sometihng?
bboy is offline  
Reply With Quote
Old 12-13-2008, 04:58 AM
  #25  
Tech Fanatic
iTrader: (7)
 
NiTrO BoOsTeR's Avatar
 
Join Date: Dec 2007
Location: Toowoomba
Posts: 947
Trader Rating: 7 (100%+)
Default

os .12tz 5port = 1.62hp @ 34,400rpm
os .12tz specII = 1.70hp @ 35,000rpm

as u can see,

the os .12 TZ 5 port has 5 ports,
the .12 TZ specII has 3 ports.

some clubs and national events have rules about the number of ports, a Tz spec II will out perform any .12tz 5 port
NiTrO BoOsTeR is offline  
Reply With Quote
Old 12-13-2008, 09:44 AM
  #26  
Tech Adept
 
bboy's Avatar
 
Join Date: Feb 2008
Location: CA
Posts: 218
Default

Is the difference really that noticeable? The comparison looks small for an extra $100+...
bboy is offline  
Reply With Quote
Old 12-13-2008, 06:35 PM
  #27  
Tech Master
iTrader: (14)
 
freestyles's Avatar
 
Join Date: Jun 2008
Location: Sydney
Posts: 1,118
Trader Rating: 14 (100%+)
Default

skyline vr12+ is a good pipe aswell
freestyles is offline  
Reply With Quote
Old 12-14-2008, 06:42 AM
  #28  
Tech Regular
 
s10dude's Avatar
 
Join Date: Apr 2007
Location: Sacramento , Calif.
Posts: 481
Default

Originally Posted by freestyles View Post
skyline vr12+ is a good pipe aswell

yup ! i use it on mine....
s10dude is offline  
Reply With Quote
Old 12-14-2008, 06:46 AM
  #29  
Tech Regular
 
s10dude's Avatar
 
Join Date: Apr 2007
Location: Sacramento , Calif.
Posts: 481
Default

Originally Posted by bboy View Post
Is the difference really that noticeable? The comparison looks small for an extra $100+...
3 port ...on road legal (ROAR )

5 port ..on road NOT (ROAR )
s10dude is offline  
Reply With Quote

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off


Thread Tools
Search this Thread

Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service