The promo kit i got from the UK comes with a plain aluminium 3009 pipe, not the coated one.

yea well if it works run it. it also has to do with the fact that its new. when your ninja .21 came out you did the same thing went wow thats the new better shit i wanna get that. just because drake Is a complete G and also happens to be like the fastest guy ever doesnt mean thats y were buying it. and mybe he was wearing a pink G-string that just means you just got your @ss handed to you buy a guy in a G-string im getting my losi 8ight in a couple of months and plan on throwin a GRP in it,

GRP NINJA
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Hi guys,

i'm intending to get the GRP tuned .21
currently i've the Ninja 2053 FLS pipe.
would it work as well with the GRP engine?

the Ninja and GRP pipes are the same right?
(except for the titanium coating on the Ninja)

and where's the cheapest online to get the GRP engine?
thanks in advance!

lastly, not to stir s*@t here, but how wld you compare the GRP tuned to the OSspeed and the new Ninja JX21?
any comments appreciated!
i'm deciding btw these 3 engines at the moment, but leaning towards the GRP cos of the orange head..:D

Chepest I have seen is teh promo kit for $389 at www.fullthrottlehobbies.com

Well I went back to my LHS after work last night and pulled the trigger on the GRP .28 promo kit. After I saw it in person on my lunch hour, it ate at me for the rest of the day. I know there has been a lot of debate regarding the .21 vs. .28 in Truggys. I myself have never used a .28, I'm a big Picco fan and have been running the JPX .21 for a while now.
My own reasoning for jumping on the .28 bandwagon came down to (2) things.

1. I have been noticing that certain drivers at the track are finally learning how to harness the power that these .28's are capable of, and it's quite impressive. I think it's like anything new, there is always a learning curve to overcome. The curve exists for the drivers and the manufactures. Drivers are learning to handle the power while manufactures are learning to deliver a more "drivable" powerband while increasing runtimes.

2. When any industry starts to make a shift one way or another its a slow process. I'm sure this comparison has been made a thousand times, but Motocross's Two stroke to four stroke evolution is a classic example. Many riders held out riding their two stroke 250cc as long as possible, but eventually they made the switch. The industry had already shifted and the riders had to adapt. I believe this is the sort of change we will see with the .28 in the Truggy class. More manufactures will start to market their .28s as "Truggy Motors" sponsored drivers will begin run these motors and eventually the .28 will become a standard in the Truggy class.

Once again, this is just my own reasoning, who knows maybe I'll be back to my JPX.21 in a few weeks, maybe this is my own cockamamie excuse to help me feel better about forking out $450 for a new mill, but for now I'm looking forward to breaking in and learning to drive the GRP .28. Just my 255 cents.

The differences between the Ninja bo1a and MRT was the MRT was 'tuned' had a filled and counterweighted crank and ceramic bearings with a Magnesium head. The Bo1a I had was good but the MRT was awesome. A friend had the the MRT so I didn't have first hand experience comparing it back to back against the the Bo1a but did have a comparison running the Bo1a aganst the speed and V-Spec. What i can tell you is the throttle response and power of the MRT was much better then the Bo1a. However, the MRT was very finicky tuning. Much more so then the speed. Not including the MRT my engine choices would be #1 Speed, close #2 Boa1, farther behind #3 V-spec. I've got a couple of axe Cobra X1's this year so when I start runing them in a month or so i can add it to the comparison. I'd also like to get my hands on an OS Ninja engine.

From pictures on a european website it apears the crank on the GRP tuned .21 has a filled crank but is not counterweighted. The engine may still be balanced by having a lightweight piston and conrod? Too bad I'd have like to compare the MRT against the speed. I still may have a chance my LHS still has a new MRT in the show case. The only thing is parts are non-existent for the MRT and if I do find them they'll cost as much as the the whole engine and the engine alone costs $600.

the tuned crank is not weighted with a insert...

Some pics....

Some more pics...

Some More..

Last ones....

I've got 4 tanks though mine so far and no problems at all. ALOT of power even with really rich settings, can't wait to lean it out and see what it can do:D

yeah real funny when the motor actually comes off at 180. i was pitting for truhe at a rev club race and his motor was only 180 at the end of a 20 min main, and it was faster than chad's speed.

Running too cold can be just as bad as running too lean.

do t buy that running to cold is bad. I have an ops with over 15 gallons on it that has never seen 200. In fact the instructions tell you never to go over 200