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Old 07-17-2007, 01:37 PM   #46
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Hi,

I look at the engine and saw On the combasion camber (underhead) is a notch/scoop . But I am not sure that is in right way installed. Should the notch look to the exhaust port or to the near the carbroteur. I can not remember how was it??

thnx
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Old 07-17-2007, 06:19 PM   #47
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It is direction carburetor.

Thanks.
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Old 08-11-2007, 01:05 AM   #48
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Default REX RT12S5CH Ver.Team Modified

Technical Data

Displacement : 2.09㎤

Maximum Power : More Than 1.67hp

Bore : 16.26mm

Stroke : 16.80mm

Ports Nr : 5

Piston Type : CNC

Crankshaft : 11mm

Crankshaft Type : Turbo SG

Glow Plug Type : Turbo

*Crankshaft Hard Coated + Full Ceramic Bearing(GS5 Class)







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Old 08-11-2007, 07:29 PM   #49
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Quote:
Originally Posted by handpiece View Post
Other engines and comparison test result output are thought

that it is over 1.75ps.

So, Think that is fine life-time.
Hey handpiece. I read you post and it is ammesing number you pull out from engine-1.75 ps (I guess ps is stand for HP) . The only thing is bothering me how did you determinate there was over 1.75 ps if you don't run on Dyno? What was createria to get that number? Lap time? Sound level? ... Marketing?
Are you fooling people around?

Edward
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Old 08-13-2007, 06:41 PM   #50
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Quote:
Originally Posted by EdwardN View Post
Hey handpiece. I read you post and it is ammesing number you pull out from engine-1.75 ps (I guess ps is stand for HP) . The only thing is bothering me how did you determinate there was over 1.75 ps if you don't run on Dyno? What was createria to get that number? Lap time? Sound level? ... Marketing?
Are you fooling people around?

Edward
I 2nd that......
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Old 08-14-2007, 01:53 AM   #51
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Originally Posted by EdwardN View Post
Hey handpiece. I read you post and it is ammesing number you pull out from engine-1.75 ps (I guess ps is stand for HP) . The only thing is bothering me how did you determinate there was over 1.75 ps if you don't run on Dyno? What was createria to get that number? Lap time? Sound level? ... Marketing?
Are you fooling people around?

Edward
Hi Edward,

I thing, I can agree handpiece spec's. I have the Gr racing OZ TZ team version . And I have a OZ speed spec II. too. The Gr racing Oz Tz is a litte bit faster than the spec II. I tested both engine with %16 fuel and ospeed 1040 pipe. Same car gearing etc...
If the ozspeed engine specs on the website is right( 1.7 hp) I can say that the Gr racing engine is about 1,75 hp. I have with the Gr racing engine about 0,1-0,2 better lap times . Our local track is large european style track!
But this not a dyno test. But for me is the best test on the track.
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Old 08-14-2007, 07:56 AM   #52
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Hi Edward,

I thing, I can agree handpiece spec's. I have the Gr racing OZ TZ team version . And I have a OZ speed spec II. too. The Gr racing Oz Tz is a litte bit faster than the spec II. I tested both engine with %16 fuel and ospeed 1040 pipe. Same car gearing etc...
If the ozspeed engine specs on the website is right( 1.7 hp) I can say that the Gr racing engine is about 1,75 hp. I have with the Gr racing engine about 0,1-0,2 better lap times . Our local track is large european style track!
But this not a dyno test. But for me is the best test on the track.
Hi CIMRI.

If I got your idea right that 0.1-0.2 secomd on laptime is equal 0.5 HP? Is that right?
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Old 08-14-2007, 11:32 AM   #53
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Hi CIMRI.

If I got your idea right that 0.1-0.2 secomd on laptime is equal 0.5 HP? Is that right?
of course not! I can only say (this is only my experience) it is faster than spec II . The specs from osspeed is for me only a start point for a comparison. maybe ,the gr engine is 1.80 hp or 1.71 hp???
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Old 08-14-2007, 12:48 PM   #54
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of course not! I can only say (this is only my experience) it is faster than spec II . The specs from osspeed is for me only a start point for a comparison. maybe ,the gr engine is 1.80 hp or 1.71 hp???
yes! you are right!!!

maybe it's power will be 1.8~1.9...
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Old 08-21-2007, 09:42 AM   #55
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Hi Handpiece

How often did you guys change the conroad? The conroad is a little thin than the original because of the modification. thatswhy I am worry about my conroad life. Pls let me now

ps. You have a pm

thnx
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Old 08-21-2007, 09:51 AM   #56
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Hi Handpiece

How often did you guys change the conroad? The conroad is a little thin than the original because of the modification. thatswhy I am worry about my conroad life. Pls let me now

ps. You have a pm

thnx
os conrod is rather more weak than novarossi

so i changed OS conrod Per 1 gallon(4 liters)
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Old 08-21-2007, 09:54 AM   #57
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os conrod is rather more weak than novarossi

so i changed OS conrod Per 1 gallon(4 liters)

Did you guys changed right after break-in ?
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Old 08-21-2007, 09:57 AM   #58
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Did you guys changed right after break-in ?
no!!! only per 1 gallon
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Old 08-21-2007, 10:05 AM   #59
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no!!! only per 1 gallon
thnx for promt answer.
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Old 09-12-2007, 07:25 PM   #60
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Hey, guys. I have the 3 port. It holds it's tune, makes a lot of power and runs through it's powerband smoothly! I'm very pleased with it's performance! I'd like to get a another engine as a back up.
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