R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 07-26-2009, 12:41 PM   #1
Tech Rookie
 
Join Date: Jul 2009
Posts: 19
Trader Rating: 1 (100%+)
Default os speed and speed II?

what is the difference between the 2 besides the head? thanks 4 the help
Billy172 is offline   Reply With Quote
Old 07-26-2009, 01:34 PM   #2
Tech Elite
 
PTP Racing's Avatar
 
Join Date: May 2003
Posts: 2,699
Trader Rating: 2 (100%+)
Default

I think the only other difference is a smaller carb restrictor.
__________________
Paycheck to Paycheck Racing
Jason Miller
PTP Racing is offline   Reply With Quote
Old 07-26-2009, 02:06 PM   #3
Tech Lord
 
Frank L's Avatar
 
Join Date: Dec 2008
Location: NorCal
Posts: 12,500
Trader Rating: 148 (100%+)
Default

Just the head and the restrictors thats is, and the head just has holes drilled in it. Its pretty much the same engine. I love it.
__________________
- X-Ray/ RC America Team Driver - MKS -
- XB8 - XB8T - XB8 E - OS Spec III - B2102 - 4PXR -
~ SSC ~ Godfather ~ Ironman ~ ButterySmooth ~
Frank L is offline   Reply With Quote
Old 07-26-2009, 06:35 PM   #4
Tech Regular
 
Join Date: Nov 2008
Posts: 341
Trader Rating: 26 (100%+)
Default

Hey Frank L I'm Putting a V-SPEC PRO-MOD in my 8ight-t 2.0. What carb in sert are you using?
bphil49 is offline   Reply With Quote
Old 07-27-2009, 02:04 AM   #5
Tech Addict
 
Join Date: Mar 2009
Posts: 725
Trader Rating: 12 (100%+)
Default

Aren't the carbs slightly different?
__________________
HB D8T with BCE Chassis, ACE Shock towers and motor mounts, M2C Rear Suspension system, KH front steering plate and chassis braces, Lunsford Ti-turnbuckles & hinge pins, OS Speed motor, Hitec 5995TG steering, Futaba 9351 throttle/brake, OS 2060 pipe, and J concepts Punisher Body.
HB D8: CEO Mods Novarossi P5K with JP4 tuned pipe, JR 9000T steering, JR 8800T throttle.
gotspeed_2000 is offline   Reply With Quote
Old 07-27-2009, 07:03 AM   #6
Tech Regular
 
markr04's Avatar
 
Join Date: Jan 2009
Location: TX
Posts: 421
Trader Rating: 1 (100%+)
Default

Quote:
Originally Posted by gotspeed_2000 View Post
Aren't the carbs slightly different?
You may be right. My Speed came with the 21H carb, but my Speed is two years old. More recent V-Specs and Speeds come with the 21J carb. I suppose it depends on how old the "regular" Speed is. Retailers may have some old stock.

I happen to be working on a document that includes info on the differences between the 21H (from my 2-year-old Speed) and 21J (from my V-Spec). Again, this is only applicable if the retailer has Speeds that have the old carb.

__________________
Xray 808 2010 Spec - O.S. V-Spec Speed - Airtronics M11-DSSS
Losi 8ight-T 2.0 - RB Killer 9 - Airtronics M11-FHSS-2
Losi XXX-CR - Tekin RS / Novak Ballistic 13.5 - Airtronics M11-FHSS-2
markr04 is offline   Reply With Quote
Old 08-21-2009, 04:49 AM   #7
Tech Master
 
GRANPA 67's Avatar
 
Join Date: May 2009
Location: south oz...
Posts: 1,408
Trader Rating: 32 (100%+)
Send a message via Yahoo to GRANPA 67
Cool OS V-SPEC SPEED

Rather than start another thread, I thought I would ask this question on this thread..I have the alloy head speed, which I purchased on 18/1/08, how many litres of fuel thru this type of mota before replacing
bearings,conrod? I had mota appart recently and found, that the bottom bushing on the rod,was slightly eliptical(Replace?),also the piston/liner look fine,compression is good, So since purchasing till now, approx 17 litres of fuel
have passed thru this mota, so at a guess I will replace rod/bearings...
Any input would be greatly appreciated...cheers...
__________________
ASSOCIATED RC8B3 , NINJA B02 , HITEC, SANWA, AKA , DHAWK RACING
ASSOCIATED RC8T, NINJA B01A , HITEC, SANWA, AKA, PROLINE , AVID
LOSI 5IVE, ZENOAH 29cc, HITEC, SANWA, DDM, TEAM GONADS, TURTLE RACING

SHUT THE GATE ON THIS ONE , IT`S THE DUCK`S GUTS , IT SUCK`S NITRO..........
GRANPA 67 is offline   Reply With Quote
Old 08-21-2009, 05:03 AM   #8
Tech Regular
 
CHogle's Avatar
 
Join Date: Oct 2007
Location: Dayton, Ohio
Posts: 323
Trader Rating: 7 (100%+)
Send a message via MSN to CHogle
Default

i got mine in early december of 08. i have 12 gallons in mine. i just pinched the engine(rematched piston and sleeve,p/sl are back to factory compression), i have also had the bearings replaced once at 7 gallons. i will be replacing the conrod after the engine is broken in again

i would say 10 gallons is a good estiment for the engine, it all depends on how well you keep the tune, clutch, ect.

im guilty of running my engines a bit too lean on the bottom end, this is why im having to replace bearings, recompress p/sl. ect. This is also why im having some one else check out and tune my engine now
__________________
C.HOGLE
Serpent America, Novarossi, O'Donnnell fuel, PT Racing Oils, SMC, H-bomb Designs, Stick it 1 racing, Motor Savor Filters, Fastraxx Hobbies
CHogle is offline   Reply With Quote
Old 08-21-2009, 11:36 AM   #9
Tech Addict
 
Join Date: Mar 2009
Posts: 725
Trader Rating: 12 (100%+)
Default

Quote:
Originally Posted by GRANPA 67 View Post
Rather than start another thread, I thought I would ask this question on this thread..I have the alloy head speed, which I purchased on 18/1/08, how many litres of fuel thru this type of mota before replacing
bearings,conrod? I had mota appart recently and found, that the bottom bushing on the rod,was slightly eliptical(Replace?),also the piston/liner look fine,compression is good, So since purchasing till now, approx 17 litres of fuel
have passed thru this mota, so at a guess I will replace rod/bearings...
Any input would be greatly appreciated...cheers...
I'd say replace the rod and the bearings like you are planning. The reason for the rod is so that you lessen the wear on the crank pin due to the bushing being worn. The bearing is preventive maintenance, especially if the stock bearing has a little slop in it.
__________________
HB D8T with BCE Chassis, ACE Shock towers and motor mounts, M2C Rear Suspension system, KH front steering plate and chassis braces, Lunsford Ti-turnbuckles & hinge pins, OS Speed motor, Hitec 5995TG steering, Futaba 9351 throttle/brake, OS 2060 pipe, and J concepts Punisher Body.
HB D8: CEO Mods Novarossi P5K with JP4 tuned pipe, JR 9000T steering, JR 8800T throttle.
gotspeed_2000 is offline   Reply With Quote
Old 08-22-2009, 02:38 AM   #10
Tech Master
 
GRANPA 67's Avatar
 
Join Date: May 2009
Location: south oz...
Posts: 1,408
Trader Rating: 32 (100%+)
Send a message via Yahoo to GRANPA 67
Cool

Quote:
Originally Posted by CHogle View Post
i got mine in early december of 08. i have 12 gallons in mine. i just pinched the engine(rematched piston and sleeve,p/sl are back to factory compression), i have also had the bearings replaced once at 7 gallons. i will be replacing the conrod after the engine is broken in again

i would say 10 gallons is a good estiment for the engine, it all depends on how well you keep the tune, clutch, ect.

im guilty of running my engines a bit too lean on the bottom end, this is why im having to replace bearings, recompress p/sl. ect. This is also why im having some one else check out and tune my engine now
Thanx for your input,my mota has a bit of life left in it then? As I stated
it has had approx 17litres(4.5gallons)of fuel thru it, so I will do rod/bearings
just to be on the safe side...thanx again guys...
__________________
ASSOCIATED RC8B3 , NINJA B02 , HITEC, SANWA, AKA , DHAWK RACING
ASSOCIATED RC8T, NINJA B01A , HITEC, SANWA, AKA, PROLINE , AVID
LOSI 5IVE, ZENOAH 29cc, HITEC, SANWA, DDM, TEAM GONADS, TURTLE RACING

SHUT THE GATE ON THIS ONE , IT`S THE DUCK`S GUTS , IT SUCK`S NITRO..........
GRANPA 67 is offline   Reply With Quote
Old 08-22-2009, 05:58 AM   #11
Tech Regular
 
FactoryRacing23's Avatar
 
Join Date: Jun 2009
Posts: 254
Trader Rating: 2 (75%+)
Default

Quote:
Originally Posted by GRANPA 67 View Post
Thanx for your input,my mota has a bit of life left in it then? As I stated
it has had approx 17litres(4.5gallons)of fuel thru it, so I will do rod/bearings
just to be on the safe side...thanx again guys...
Thats about what I have threw mine, I am getting ready to take it apart and do the bearings and possibly the rod if it needs it. I will probably replace the rod with the O.S Speed rod as its suposed to be stronger.

Nick
__________________
Nick Groves
FactoryRacing23 is offline   Reply With Quote
Old 08-22-2009, 06:13 AM   #12
Tech Champion
 
JAMMINKRAZY's Avatar
 
Join Date: Jun 2007
Location: Pittsburgh PA
Posts: 6,575
Trader Rating: 17 (100%+)
Default

Quote:
Originally Posted by markr04 View Post
You may be right. My Speed came with the 21H carb, but my Speed is two years old. More recent V-Specs and Speeds come with the 21J carb. I suppose it depends on how old the "regular" Speed is. Retailers may have some old stock.

I happen to be working on a document that includes info on the differences between the 21H (from my 2-year-old Speed) and 21J (from my V-Spec). Again, this is only applicable if the retailer has Speeds that have the old carb.

+1

All of the newer speed 1's came with the 21JS carb. The updated version is part number 13897(old one is 13894).
__________________
-Koby Kubrin-
Thanks to my Sponsors:
Serpent America | Team Novarossi | Desoto Racing | Race AKA | Ridgeway Bodies
JAMMINKRAZY is offline   Reply With Quote
Old 08-22-2009, 08:21 AM   #13
Tech Master
 
GRANPA 67's Avatar
 
Join Date: May 2009
Location: south oz...
Posts: 1,408
Trader Rating: 32 (100%+)
Send a message via Yahoo to GRANPA 67
Cool

Quote:
Originally Posted by FactoryRacing23 View Post
Thats about what I have threw mine, I am getting ready to take it apart and do the bearings and possibly the rod if it needs it. I will probably replace the rod with the O.S Speed rod as its suposed to be stronger.

Nick
Thanx for your input Nick, I have the Speed, I gather you have the normal
v-spec(blue head)? If so, I would look at other threads regarding putting a
Speed rod into it, coz as far as I know you have to put the crank in also,
As the speed rod has oil hole in it, where as the normal v-spec doesn`t..
Ask around for more info if ur not sure,Better to be safe,than sorry....
__________________
ASSOCIATED RC8B3 , NINJA B02 , HITEC, SANWA, AKA , DHAWK RACING
ASSOCIATED RC8T, NINJA B01A , HITEC, SANWA, AKA, PROLINE , AVID
LOSI 5IVE, ZENOAH 29cc, HITEC, SANWA, DDM, TEAM GONADS, TURTLE RACING

SHUT THE GATE ON THIS ONE , IT`S THE DUCK`S GUTS , IT SUCK`S NITRO..........
GRANPA 67 is offline   Reply With Quote
Old 08-22-2009, 12:55 PM   #14
Tech Addict
 
Join Date: Mar 2009
Posts: 725
Trader Rating: 12 (100%+)
Default

Quote:
Originally Posted by GRANPA 67 View Post
Thanx for your input Nick, I have the Speed, I gather you have the normal
v-spec(blue head)? If so, I would look at other threads regarding putting a
Speed rod into it, coz as far as I know you have to put the crank in also,
As the speed rod has oil hole in it, where as the normal v-spec doesn`t..
Ask around for more info if ur not sure,Better to be safe,than sorry....
You can put the speed rod in no problem in a standard VZB, it's when you the speed crank with a standard rod is where you'll run into problems. The standard crank has a oil hole in the crank pin, and the speed does not. However, in the speed, the rod has a oil hole near the lower bushing. The stock VZB rod does not have a oil hole drilled into the rod. The addition of the extra oil hole in the speed rod should not pose a problem, it would add more lubrication to the bushing if anything.
__________________
HB D8T with BCE Chassis, ACE Shock towers and motor mounts, M2C Rear Suspension system, KH front steering plate and chassis braces, Lunsford Ti-turnbuckles & hinge pins, OS Speed motor, Hitec 5995TG steering, Futaba 9351 throttle/brake, OS 2060 pipe, and J concepts Punisher Body.
HB D8: CEO Mods Novarossi P5K with JP4 tuned pipe, JR 9000T steering, JR 8800T throttle.

Last edited by gotspeed_2000; 08-22-2009 at 12:57 PM. Reason: additional info
gotspeed_2000 is offline   Reply With Quote
Old 08-22-2009, 09:45 PM   #15
Tech Master
 
GRANPA 67's Avatar
 
Join Date: May 2009
Location: south oz...
Posts: 1,408
Trader Rating: 32 (100%+)
Send a message via Yahoo to GRANPA 67
Cool

Quote:
Originally Posted by gotspeed_2000 View Post
You can put the speed rod in no problem in a standard VZB, it's when you the speed crank with a standard rod is where you'll run into problems. The standard crank has a oil hole in the crank pin, and the speed does not. However, in the speed, the rod has a oil hole near the lower bushing. The stock VZB rod does not have a oil hole drilled into the rod. The addition of the extra oil hole in the speed rod should not pose a problem, it would add more lubrication to the bushing if anything.
Thanx for that info gotspeed2000, I wasn`t 100% sure, I may have to look into doin that myself, as I have a standard v-spec that needs a rebuild,
but my speed will get new rod first,as I am currently running this mota...
__________________
ASSOCIATED RC8B3 , NINJA B02 , HITEC, SANWA, AKA , DHAWK RACING
ASSOCIATED RC8T, NINJA B01A , HITEC, SANWA, AKA, PROLINE , AVID
LOSI 5IVE, ZENOAH 29cc, HITEC, SANWA, DDM, TEAM GONADS, TURTLE RACING

SHUT THE GATE ON THIS ONE , IT`S THE DUCK`S GUTS , IT SUCK`S NITRO..........
GRANPA 67 is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Team Orion CRF Wasp Rev X-Dyno results Nano Onroad Nitro Engine Zone 1531 11-07-2010 01:43 AM
O.S. Speed owner speak up NitroNewbie Nitro Off-Road 97 03-07-2010 12:37 PM
OS V-Spec II World Edition or Mugen Ninja JX21??? In3g_z33 Nitro Off-Road 64 08-09-2009 08:17 PM
Gangsa Melaka GP 1/8 & 1/10 and EP M-Chassis Fun Race - 23 Nov 08 zali_sh Malaysian R/C Racers 671 11-26-2008 02:26 AM
iRacingWerkz Nitro Fest II @ Turf City(GP Offroad race registration, 21st Oct 2007) iRacingWerkz Singapore R/C Racers 42 10-18-2007 03:52 AM
iRacingWerkz Nitro Fest II @ Turf City(GP Offroad race registration, 26th Aug 2007) iRacingWerkz Singapore R/C Racers 110 08-29-2007 05:58 PM
iRacingWerkz Nitro Fest II @ Turf City(GP Offroad race registration, 10th June 2007) iRacingWerkz Singapore R/C Racers 83 06-11-2007 06:03 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 10:55 AM.


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