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-   -   RB Concept Engine Thread.. (https://www.rctech.net/forum/offroad-nitro-engine-forum/251409-rb-concept-engine-thread.html)

sprattz 05-18-2013 07:01 PM

I have a rb fire 12 in my mugen buggy. It's way way way too much power pretty much skate the car the whole way round the track. Very on/off delivery. Would this be any good in the rc8tce or same thing-too much. Thinking with the extra grip and weight it should tone the fire down a bit.
It's only just nearly broken in still creeping up on race tune. If it's gonna be too much I'd prefer to not install it at all and sell it off whilst it's still fresh. Is the a way to tone it down a bit without running it blubbering rich at all?
Truggy is in the mail will be here tomorrow, currently has a works b7 pro installed. How do these 2 engines compare? Trying to work on the slow is fast principle and the fire doesn't condone this style at least not in a buggy.

hambone 05-18-2013 07:09 PM

I really liked the Fire in my truggy. Mine was CRE modded and it was really nice with 2058 pipe. Sadly a part of the wrist pin clip broke off and scored the p/s.

emacrimes 05-18-2013 08:23 PM

Are they the same engine?
Why is it more expensive without the pipe?

http://www.absolutehobbyz.com/produc...ducts_id=10587

http://www.absolutehobbyz.com/produc...ducts_id=10584

RCmayor 05-20-2013 11:25 AM

Interesting observation on tearing down the Blast V12. The crank rotor is full round instead of the usual more triangle shape toward the crank pin. Hmm.

mklemp92 05-22-2013 11:47 AM


Originally Posted by Herrsavage (Post 12154375)
Kills it how? Can you be more specific about what you like about it?


(Damn!! Should have waited for the V11 instead of getting the V9...... :( )


The bottom end is unreal! Just so much power and it idles like a champ and is pretty easy to tune

Herrsavage 05-22-2013 11:56 AM

Sounds good... I've tried to sell my V9 a few times, with no luck.., so I guess I'll be stuck with it. See how it goes.. Just have to find the time - and for one of my other engines to die.. I have more engines than I have time to run them these days unfortunately.. And the weather has been awful too(even by German standards..) :rolleyes:

Grinder 05-22-2013 12:23 PM

Murnan Modified RBM5 .21
 
1 Attachment(s)
We are happy to release the Murnan Modified RBM5 .21 Offroad Engine.

The RBM5 was designed for today's most demanding drivers who want exceptional power, and fuel mileage together. The RBM5 delivers both. The RBM5 is a great engine to use for Buggy racing. The engine parts are all made in Italy, and are of the finest quality. The engine is hand tuned by Murnan

The engine design allows for smooth controllable bottom end with a high top speed. The engine has a very linear powerband, which is easy to drive. Fuel mileage is exceptional.

-5 port sleeve with 2 by bypass ports and 3 Port Exhaust System
-CNC machined piston for super long life
-14mm Lightened, Bi-turbo crankshaft
-Competition conrod
-Turbo combustion chamber
-14mm main steel bearing
-Front dust protection double rubber sealed steel bearing
-Low Center of Gravity & lightweight cooling head
-Lightweight but strong crankcase
-Composite slide carburettor 7mm insert
-Hand Tuned

Specifications: 3.49cc
Bore: 16.22mm Stroke: 16.80mm
Porting Intake: 5 intake + 2 bypass Porting
Exhaust: 3 port Exhaust System
Crankshaft: 14mm Lightened, Biturbo
Carburetor: Nylon 9mm
Weight: 348g
Plug: Turbo
R.P.M. (max power): 36,000
RPM Practical range: 6,000-40,000 R.P.M. Fuel 25%-30%

Smooth Setup: Novarossi 9901 Exhaust, with Novarossi 41021 manifold / 7mm restrictor, Novarossi C6TGC/C7TGC Glowplug

Aggressive bottom end Setup: Novarossi 9853 Exhaust, with Novarossi 41021 manifold / 8mm restrictor, Novarossi C6TGC Glowplug

More Compatible Exhaust System: Werks 2058 / Novarossi 2096 / Novarossi 9886 / RB2097 There are more Exhaust systems that work great, these are just a few.

rick oxley 05-22-2013 12:44 PM

sprattz

the rb fire is powerful but not too much for buggy
you just need to work on your setup try carbon clutch shoes
and ligter centre diff oil my setup is 3carbon rmv shoes 1st shoe drill 1x2.5mm
hole 2nd shoe 2 holes and 3rd shoe 3 holes useing mugen 1.1mm springs
hope this helps.

aznitronut 05-22-2013 06:57 PM


Originally Posted by FisherKing (Post 12159913)
Hey guys.. I have a RB B10 I bought a couple of years ago. The engine gave me 13 gallons and still had compression. I sent it to get resized and the PSC got lost in the mail. Well... after a Nova 21-4, Odonnell POS, Dynamite V2, and a Gotech GT5, I decided to get a new psc for the B10. Nothing compares to good reliability for me. I lost the 2045 pipe and manifold though and I'm wondering if a dynamite 053 tuned pipe will work well with an RB B10? I don't really want to buy another 2045...

If you use the 053 pipe, it may give you too much bottom, if you get a Losi pipe, the 'RE12, it's a copy of the nova 9901/41021, or go with the nova rossi 2096 pipe, it's the same as the RB 2045, with the nova 41021, will work great on the B10 .

fun hawg 1 05-28-2013 01:19 PM

v12
 
I was looking at the v12. How do these motors run? The price is very good. I would like to try a rb engine every one that has one sure like them.

Jaz240 05-28-2013 02:34 PM

Looking for some help please. Ordered a few of the RB limited edition 5 ports (Blast V12) for stock and would like to know best pipe choices and headers for buggy and Truggy please as well as best glow plug choice? Thank you.

Maximo 05-28-2013 03:03 PM


Originally Posted by Jaz240 (Post 12199585)
Looking for some help please. Ordered a few of the RB limited edition 5 ports (Blast V12) for stock and would like to know best pipe choices and headers for buggy and Truggy please as well as best glow plug choice? Thank you.

I like the 2058 on those......

RCmayor 05-29-2013 03:39 PM

If it is the same as the C5/C6 of yesteryear and I think they are. The 9886 was incredible on that engine. Probably the fastest and smoothest engine I have ever ran.

BMenard17 05-30-2013 12:12 PM


Originally Posted by Grinder (Post 12179470)
We are happy to release the Murnan Modified RBM5 .21 Offroad Engine.

The RBM5 was designed for today's most demanding drivers who want exceptional power, and fuel mileage together. The RBM5 delivers both. The RBM5 is a great engine to use for Buggy racing. The engine parts are all made in Italy, and are of the finest quality. The engine is hand tuned by Murnan

The engine design allows for smooth controllable bottom end with a high top speed. The engine has a very linear powerband, which is easy to drive. Fuel mileage is exceptional.

-5 port sleeve with 2 by bypass ports and 3 Port Exhaust System
-CNC machined piston for super long life
-14mm Lightened, Bi-turbo crankshaft
-Competition conrod
-Turbo combustion chamber
-14mm main steel bearing
-Front dust protection double rubber sealed steel bearing
-Low Center of Gravity & lightweight cooling head
-Lightweight but strong crankcase
-Composite slide carburettor 7mm insert
-Hand Tuned

Specifications: 3.49cc
Bore: 16.22mm Stroke: 16.80mm
Porting Intake: 5 intake + 2 bypass Porting
Exhaust: 3 port Exhaust System
Crankshaft: 14mm Lightened, Biturbo
Carburetor: Nylon 9mm
Weight: 348g
Plug: Turbo
R.P.M. (max power): 36,000
RPM Practical range: 6,000-40,000 R.P.M. Fuel 25%-30%

Smooth Setup: Novarossi 9901 Exhaust, with Novarossi 41021 manifold / 7mm restrictor, Novarossi C6TGC/C7TGC Glowplug

Aggressive bottom end Setup: Novarossi 9853 Exhaust, with Novarossi 41021 manifold / 8mm restrictor, Novarossi C6TGC Glowplug

More Compatible Exhaust System: Werks 2058 / Novarossi 2096 / Novarossi 9886 / RB2097 There are more Exhaust systems that work great, these are just a few.

O yea I got me one of these in the mail and I can't wait to run it!

RCmayor 05-31-2013 08:45 PM

So saw a Blast V13 on a news site. Whats the difference between that and the V12? The internals look the same in the pictures.


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