This engine won't work with a red shirt. :confused: :lol: Just Kidding William.

What about the .28? Im running the .21 and its pretty friggen quick, so the .28 should be that plus some. I see a few websites have them, but are listed out of stock (the .28) is it because they sold out or because they are waiting on the first shipment?
Yeah, Ive tried contacting the online shops, no replys though.
Thanks for info.

What restrictor is in the Ninja .21 on-road engine? Do they make smaller sized ones for this engine? I am just wondering if I can't make time with this engine again when I go out next year, I maybe better off putting a restrictor in for the qualifiers and switching back in the mains.

I think that it might be better to just make time in the qualifiers and be alittle bit slower then coming in for a splash. Or would it be better to switch to 20% fuel? Any thoughts???

The On-Road .21 comes with a 8.5mm restrictor.

Yep, they make a 9mm (the max permitted) and a 8mm, 7.5mm (Stock on the Off-Road) and 7mm (AFAIK).

Don't stress yourself with this, the 8.5mm makes a lot of runtime (in fact, all the people I've seen makes easily 6minutes with the 8.5mm). Some time ago tried a 8mm restrictor and the carb adjustment was somewhat difficult, because the LSN was too rich and you had very little margin of adjustment going from too rich to too lean. On those moments missed to have a third needle to get more control on the LSN. :(

Planning to test the 9mm another time, last tests I did hurt the runtime without so much additional power. Maybe it needs further adjustment.

Better to not mess with different fuels for qualifiers and mains, stick to a fuel and work with it to suit your needs. Go with a 25 or 30% nitro and you will not be dissapointed.

What kind of pipe you plan to use? If you don't have one, get the ninja pipe and the short manifold.

BTW: Check your combustion chamber height before starting the engine!!! Look on the previous posts what happened to someone who didn't checked it.

I have the JP EFRA pipe not sure of the number. I checked the top of the piston and it looks good. I put the extra shim in just to be safe.

We have a big flowing track. What is the better length pipe short or long?

The JP Pipe is fine get a pair of manifolds (short and medium) and see what suits better to the engine.

Regarding adding shims. I use it with a 25% Nitro and needed to add 0.2mm of shims to get the correct combustion chamber, maybe and depending you run and the fuel you use with only one shim, you're going short on chamber height (seemed to read here that guys going to 30% Nitro added 0.3mm.

Where can I get the other manifolds? thanks

Bruckner Hobbies
 

Whats up Doc??? You can get the manifolds from Bruckner Hobbies. We have a couple of the Novarossi ones, and the actual Ninja manifolds. I am running a Ninja, and I use the Novarossi manifolds. The Ninja are good, I already had the other ones, and did not see a need to change.

Bruckner Hobbies
(718) 863-3434 Ask for Danny/Paul (Me)/Chester
www.brucknerhobbies.com

It would be nice if one or more of the guys that ran the .12 at the IFMAR Worlds would share their experience with the engine - especially clutch settings, gearing and powerband. How does it compare to some of the other engines you guys have been running?

Thanks! :)

Mike you want the medium manifold,thats what Swauger is he best and he used it when he was here, and yes we have them.

Taurean, this is Pooh give me a holla.

Thanks Chris, I will get one from you sometime this winter. I am going to try running 25% to get the better milage next year.

MR12 T01
 

So its officially the beginning of November. Any word on the arrival of this engine?

I just got a b01a today, anyone know the difference from a b01? its suspose to be the latest version but i dont know, also i want to run 30% should i use both shims that came extra with the motor? thanks paul

Does anybody is running with R01-21? Want to share experience? :smile:
durability, performance, issues
:sweat:

Good Stuff
 

the motor is great. no problems to report. it is a lil soft coming out of corner, but the way it rev's, the mid-range to top is sick. I must admit though, I am running a Murnan Mod Ninja.

With the a spec they revised/refined the coating, hardening and materials list. Supposedly no change in performance, just an increased reliability.

I've had 2 MR r-01 21. The first the block leaks and it's got a high diet of plugs and bearing. The second is an absolute dream to tune, has plenty of power, and is a top motor. Just go figure.

I wonder if your the only one? The tcs ring,(plastic ring around the carb neck) is it cracked? :confused:

If your referring to No.1 engine MugenDrew. Your assumpation is correct. Yes the TCS ring is cracked. I've had guys with decades of experience have a look at it and the bottom line is it leaks around the block near where the burn room goes. So be it then. I'm not that worried about it. :lol: No. 2 engine so far it's as good and reliable as any Nova I've had. :)

How do you know if you have a new ninja.

If your referring to the A spec; On the head printing there will be an A at the end MR21-01A, same on the label that's visible through the box.

Ninja's just finnished one and two in the RC Pro series national championship for onroad! They ran strong, right their with everyone else! Very good engines!

anybody know whats the size of the front and rear bearing of the RO1?

I guess the T01 is not coming out til next year. I swore someone said they heard from the source it was goin to be late October early November.

That person was me. I was talking to one of the Gandini Bros and Mike Swauger at the worlds and his exact words were "end of october to early/mid november", maybe they have had some issues with production. But that was what he told me.

Any one got any update?

Yes Slo-MTX-4, I was not trying to flame you at all, I'm more upset at them for getting our hopes up. I've been looking for a good back-up motor for my 12-3CT. I just hope the ninja will be available when the MTX-4 WC comes out

hopefully Mugen will make a combo WC MTX-4 with the Ninja now that would be mouth watering

Dear Santa,

Instead of bringing me a Christmas gift this year, please give the guys at GRP the help they need to finally put the engine on the street! We have been waiting forever! :sneaky:

Thanks! :) :)

Seriously! What's the problem?? Was the design that far off? Yes, I know the engine is probably going to be even better - and yes, I would rather have the engine delayed than flawed, but really now! :sneaky: :D :D

End of Feburary 2007. :)

They are waiting to long. A lot of guys will be ordering engines before then for the up coming season. :(

The BOSS .12 version is already on sale in Italy, who ever is interested it getting hold of some let me know. I will post a pic later on today. ;)

can you please post a link to any site that sells that engine on italy!
Perhapos production is building the boss, then the falcon and lastly the ninja
we'll see

happy racing

Here are the pics I promised. Regarding a place to buy them from PM me and will let you know.

I have a question.. Now that Ninja has released a new version of the .21 onroad engine, how do I know It's the new or old version by looking at the box? What exactly should I look for on the label or engine? I'm thining of buying one but would hate to get suckered into buying the older version because I heard it major problems with the connecting rod.

Thanks.. :)

It's Laser etched in the top of the cooling head. For example MR21 R-01A is for the newer motors. :)

Great.. Thanks :)

Nice rubbers for the shaft :sneaky:
Is that a common thing these days? (ie. For manufacturers to protect the crankshaft like that?)

Has any brother tried using NovaRossi's and O'donnell's spark plug on Ninja's?