R/C Tech Forums

Go Back   R/C Tech Forums > General Forums > Nitro Off-Road

Reply
 
Thread Tools Search this Thread
Old 08-06-2008, 09:36 AM   #1
Tech Adept
 
Join Date: Nov 2005
Location: Saskatoon, Sask. Canada
Posts: 188
Trader Rating: 10 (100%+)
Default GRP tuned 21 vs OS speed 21

I am undecied on what mill to try next I currently run a rb motors and want to try something else for my jammin buggy I have narrowed it down between the GRP tuned 21 and the OS speed 21 but I can't make a decision I heard good and bad stories about both the price doesn't effect anything some say that the os is a 2-3 gallon motor and the grp is 10-12 gallon motor your opinions would help thank you

Last edited by big_klemo; 08-06-2008 at 10:53 AM.
big_klemo is offline   Reply With Quote
Old 08-06-2008, 11:32 AM   #2
Tech Adept
 
sonyb's Avatar
 
Join Date: Jan 2007
Posts: 138
Trader Rating: 1 (100%+)
Default Which engine???

I own both engines, talking about lifespan of engine its all up to you.....
If you take good care of your engine...cleaning and maintenance and you dont overrun it, you will a got more gallon on it....

for overall performance OS speed..

the GRP motors need improvement in bottom punch...in mid and high its awesome....

www.MyRCspace.net my personal website:
sonyb is offline   Reply With Quote
Old 08-06-2008, 01:08 PM   #3
Tech Fanatic
 
GH Racing's Avatar
 
Join Date: Jan 2008
Location: Vancouver, Canada
Posts: 795
Trader Rating: 3 (100%+)
Default

I would suggest the OS speed 21
__________________
GH Racing by Golden Horizons. Buy Direct At: WWW.GHHOBBY.COM
FOLLOW US ON TWITTER NOW: twitter.com/GH_Racing
High Quality Machined Aluminum Parts and Accessories. Vancouver, Canada.
GH Racing is offline   Reply With Quote
Old 08-06-2008, 01:16 PM   #4
Tech Addict
 
Steve Walters's Avatar
 
Join Date: Oct 2006
Posts: 662
Trader Rating: 1 (100%+)
Default

OS Speed....

BTW they last longer then 2-3 gallons..
__________________
"CVR" Central Valley Raceway (Madera, CA)
Team "WTF" Racing member
TEAM BCE (Product/Field Tester)

X-Ray 808 (Active Diff)
BCE 8X8 Pro Chassis
OS Speed (XCustoms Head Mod)
Hitec 5995TG (S&T)
M11 & Spectrum.
Steve Walters is offline   Reply With Quote
Old 08-06-2008, 06:44 PM   #5
Tech Adept
 
Join Date: May 2008
Location: Kelowna, BC
Posts: 163
Default

Im not really familiar with the GRP.

I run a OS Speed, and thats what i recommend.
1RC_ROOKIE is offline   Reply With Quote
Old 08-06-2008, 09:53 PM   #6
Tech Master
 
jpz_67's Avatar
 
Join Date: Jul 2006
Location: Texas.
Posts: 1,787
Trader Rating: 56 (100%+)
Default

If price is not an issue then hands down choose the speed. Very powerful but smooth engine. I am not impressed by what I have seen in my region from the grp engines.
__________________
Agama A215, Futaba, Nitro Pro Fuel, Proline tires, Triton Engines, Savox.
jpz_67 is offline   Reply With Quote
Old 08-07-2008, 01:16 AM   #7
Tech Adept
 
TRArena's Avatar
 
Join Date: Mar 2008
Posts: 155
Default

i've used both and if there wasn't such a killer deal on the tuned grp with pipe then i'd prob recommend the OS Speed.... i've seen the tuned grp with pipe package for $310 odd + freight which, unless price is not an issue at all, makes it pretty tough not to go with the grp... and regardless of what has transpired with Mr Maifield the GRP seems a quality mill... if you decide to go that way just remember to keep your tuning adjustments aimed more at the LSN than the HSN and run a P3 plug.
TRArena is offline   Reply With Quote
Old 08-07-2008, 08:19 AM   #8
Tech Adept
 
Join Date: May 2008
Location: Kelowna, BC
Posts: 163
Default

If you decide to go that way just remember to keep your tuning adjustments aimed more at the LSN than the HSN and run a P3 plug.

I just got a OS Speed still in the box, its my first turbo plug motor.Why would it be more important to tune more with the LSN instead of the HSN?? does that aplly to most all the turbo plug engines or just the GRP??
1RC_ROOKIE is offline   Reply With Quote
Old 08-07-2008, 01:30 PM   #9
F-1
Tech Regular
 
Join Date: Jun 2008
Location: Russia
Posts: 260
Default

GRP!
F-1 is offline   Reply With Quote
Old 08-11-2008, 03:01 PM   #10
Tech Adept
 
Join Date: Nov 2005
Location: Saskatoon, Sask. Canada
Posts: 188
Trader Rating: 10 (100%+)
Default

Thanks for your opinions I got the os speed, i got just about a half of gallon on it and it rips, lots of bottom end power and the top seems good too, I was running the os2060 pipe and I switched to a dymanite086 pipe it seemed to help with the top end
big_klemo is offline   Reply With Quote
Old 08-11-2008, 07:50 PM   #11
Tech Regular
 
lowey79's Avatar
 
Join Date: Dec 2007
Posts: 356
Default

I thought the 2060 was a top end pipe anyway?.... i could be wrong?
lowey79 is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
O.S. .12 TZ(P)-T3 Speed Tuned madnitro Onroad Nitro Engine Zone 368 04-07-2013 11:17 PM
OS Speed 12TZ (P) T3 Speed Tuned Engine SpeedyDad R/C Items: For Sale/Trade 6 03-02-2009 03:49 PM
O.S. .12 TZ(P)-T3 Speed Tuned NIB!! occ Australia For Sale/Trade 2 10-14-2006 10:21 PM



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search

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



All times are GMT -7. It is currently 12:14 AM.


Powered By: vBulletin v3.9.2.1
Privacy Policy | Terms of Use | Advertise Content © 2001-2011 RCTech.net