the lsn could be rich or your clutch can be on the soft side,
like i said before the settings on this motor are very sensitive and clutch setup is key.

When I first got mine, I thought the same thing. It ran ok at 240, but I had same problem as you. Then I leaned it some more, more than I thought I should, and at 270, it became ballistic.

Also, try a different glow plug. Mine seems picky about which plug I use.

I'll have to play with it some more. If not, I'll pass it along for $200 with pipe.
Hek, I'll probably just get rid of it anyway.

your new to nitro, no?
i'm only 16 and i know what to do, lol.


like m7h said
"Drivers should not look at the engine temperature to much.
Humidity, airtemp, fuel type are all factors which have influence on the temp."

how many tanks have you run on it?

Exergen does not make engines.

i have 2.5L through mine and i still have such a pinch from hell
gona be getting the tuned one soon,the one with the mag head,looks really cool.
and i got the new pipe ,the one that you just twist the header on the pipe.
# mr15005.

I'd say, play with your clutch settings!

What is the coldest plug that you can get for the Ninja? I am running #7 plugs know.

A #8 AFAIK, but... wonder why you would run such cold plug? no matter if you use a .12 or a .21, #6 and #7 should suffice you for all the conditions you can face.

In regards to my RO1T:

Big problem!!!

We have figured out why it ran like a dog..nothing to do with tune.. The bearings are r00ted..the crank has sideways movement..is that cr@p or what! very dissapointed that the bearings were stuffed considering this has happened from new..I'm guessing manufacture defect. As a result of this the back of the conrod on the bottom has some nicks on it from moving around due to the ill bearings.

Has anyone ever approached Ninja on warranty? is it possible (I would like to know as it's a brand spankin new engine? only care about warranty, as for a $650us engine, I was expecting better..this is garbage! I'm hoping it's a one off...if not, I'd be checking your bearings boys..

Cheers boys

Ryan

Ryan I have a little advice. I am pritty shore the tuned 21 ninja has ceramic bearings in the rear. With all engine's but more so with ones with ceramic bearings during the barke-in procdure from first start you must be very carefull not to give fast excelaration you have to have very smooth throttal movements and alway's at a ritch setting. Ceramic Bearing have a bad habbet of skidding the balls inside the outer and inner races during the very early stages of brake-in. When that happens it damages the bearings very very early on befor the bearings and all moving parts have time to set there clearences. I am no expert but I have a feeling that may be part of your prob now. I know i have done it my self many times. I am much more carefull now to make shore i do very smooth throttal inputs on a fresh engine or even after replacing parts like bearings and conrod's. I hope you get it running agen soon. I knew the engine was not running like it should and i think once you get it sorted it should be quite good just don't give up yet. Best Regards Jeremy.

and with these motors i really believe that you need a bench to do the break in properly. and the nitro% low and the oil high.

Hey, yeh, Chris ran it in with me..we let is lube right up for a tank at idle..then very cautiously drove it..and didn't give it rapid or hard throttle outings.. only started to really get on the throttle after about 6 or 7 tanks..

I emailed ninja, so hopefully they reply.

Whilst we had it apart.. we compared it to Chris's JP R03..and the porting on the Ninja has nothing on the JP...the JP looks much more impressive! If Ninja don't come to the party...I think I will have an Eagle on the way!

Cheers, Ryan

I have a R01 and the con rod went bust in less than 1 gallon of fuel.Emailed them to ask about the con rod and they haven't reply yet.Its been almost 2 weeks now.

I was very lucky the con rod gave way during idling,internally nothing much damage.What I worry most is the new con rod whether it will last.

I will be honast i have no exprence running ninja engines but i agree with you every manufacture is difrent. I would never run a novarossi engine in like i use to do with a sirio. Sirio engines did not cope well with a long brake-in probaly because of the difrent materials used in the piston itself. Novarossi is difrent agen. From what i see with the ninja people constantly over tune the engine to try to get bottom end power. Were as from my view they should look at gearing and clutch rather then leaning hard on an engine trying to find somthing that will never come with out the clutch and gearing suiteing the engines powerband. I made my orignal post because i know ryan and have seen the engine run. Best Regards Jeremy.