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

buggydad 05-27-2009 08:35 PM

:nod:

Originally Posted by aaron joy (Post 5867123)
I totally agree they are some of the best engines out there. I believe Brian is trying to do the best job that he can do. He is a straight up guy and a pleasure to deal with. I think the problem was the lack of product to distribute, it took quite a while for the engines to arrive from France but once they did Brian got the engines out to the hobbyshop I work at the same day. Give him a chance, I can only imagine the work that is involved being the sole importer of RB engines to the states.

My comments were by no means an attack on brain.Thats who i got my usa spec from very nice guy and i got my engine lighting fast.I just dont think they release enough of product.There downfalls is by no meens brians fault.Just would like to get these more on a whime thats all.If something breaks most people buy what they can get fast in a pinch.Me ill get these motors even if i need to get them shipped from france LOL my c6 lasted 8 gal before i rebuilt it and another 2 before i sold it with my old buggy.Worth while :nod:

aaron joy 05-27-2009 08:51 PM

Thats not what I was trying to say my friend. I am just trying to let everybody know they just came in and in time they should be more readily available. I myself am a big fan and pleaded with my boss to get RB's in. I now push them on and off the track. It's hard and expensive to stock all the parts and engines so we are going to try to keep maybe one or two of the lower cost engines on hand. You are definetly seeing more RB's than before.

JUD 05-28-2009 03:49 PM

JUST RAN MY RB FOR 4 TANKS!!!! :tire: NO FLAMEOUTS!!!!:tire::tire: IM LOVING THIS HOBBY 9!!!!:nod::nod:

Chris__RC 05-28-2009 04:32 PM

I tried to emial Rb but I got a failure notice...I was wondering what the difference was between the Hobby 9 and the Rally 9? The Rally 9 is turbo, for buggy, and is a "competation" engine. The Hobby 9 is standard, for buggy, and considered a sport engine-yet the Rally 9 is $5 cheaper. Why is this?

jag5508 05-31-2009 03:46 PM

Was wondering if anyone knows how many head shims I should use on an S5 using 20 % it's an older one took it apart to clean it and noticed there was 2 ? I just started running nitro again and pulled out of my Mugen . It's going in a losi truggy.

putterx 05-31-2009 04:05 PM

If they are the stock shims you should be good to go. The stock shims are .01 and .02 for a total of .03. .03 is good up to 25% nitro.

jag5508 05-31-2009 04:17 PM


Originally Posted by putterx (Post 5880538)
If they are the stock shims you should be good to go. The stock shims are .01 and .02 for a total of .03. .03 is good up to 25% nitro.

Thanks it has an O'donell head on it and when I took apart I didn't remember it having the 2 shims I put the head on it about 4 years ago . I was going to use a dynamite platinum .28 xp but it is too nuts so I'm going back to old reliable . It's going to be RB or nothing for me never had a prob with any of my RB's I don't know what the hell I was thinking .:lol::lol::lol:

Pete Martinez 05-31-2009 04:56 PM


Originally Posted by aaron joy (Post 5866523)
You're welcome Jud, glad I could help. Well worth the wait. I got about 8 minutes in my 8ight 2.0 Mild tune, the engine is still tight. I only have a little over a half of gallon on it.

thanks aaron.

aaron joy 05-31-2009 07:02 PM

I did a confirmed 8 minute pitstop today on my "Hobby 9" on a lot larger high speed track. I was able to run a RB#6 plug for the first time with some luck, I usually run McCoy #59 in my non-turbo RB' with 25% nitro. She is really starting to wake up after about a gallon thru her. The engine is more than enough for a buggy, for me anyway.:lol: I think I need to get a
"Junior 9" 3 port and relearn how to drive a 1/8th buggy.

buggydad 06-03-2009 05:45 PM

I have noticed that around my front bearing on the case there is dirt collecting. is this an indication that i may need to change the front bearing?
And what bearings are recomended
Thanks guys

omarwashington 06-03-2009 06:15 PM

what happened with the S line of rb engines?(s3, s5 etc) I assume they have been discontinued and replaced with the 9 series?

aaron joy 06-03-2009 09:04 PM

Yes, they have been replaced with the junior (S3) and hobby (S5). Basically the same except for the lighter cooling heads and aluminum orange carb pinch bolt assembly.

leapinglizard 06-03-2009 09:39 PM

Help with C5
 

Originally Posted by what_stanger? (Post 5670327)
Add 0.1mm shim to the engine.

Just make sure you know, shims aren't all 0.1mm.
Stock the engine should have two shims;

1) 0.2mm
1) 0.1mm

that gets you a total of 0.3, you need one more 0.1 for 30 percent(0.4mm). You could also use two 0.2mm shims if you wanted, to only have to bother with a total of 2 shims.

EDIT: if you want to run 20 percent, use 0.3mm in shims total (probably the two the engine came with....although i'd still check)
if you want to run 30 percent, use 0.4mm in shims total

A buddy let me borrow his C5 that has just been pinched and had new bearings installed. I'm running a 053 pipe. I'm new to RB Motors, noticed that the new lineup of engines are way different than what my buddy lent me. I was wondering what a basic starting point for tuning would be and what would be a good engine to purchase for a small to medium track?

justag3 06-08-2009 06:33 PM

Have a S7 motor(Have no complaints, just compliments) running the 2045 pipe with it and the 192 header,combo deal that i got. Don't like the way it fits in my MBX6(pipe is to long for me, it sticks out past the mud guard,,,,,,,,is there another pipe that would work well with this motor???? thanks for the help!

Midnight 06-08-2009 07:21 PM


Originally Posted by justag3 (Post 5913471)
Have a S7 motor(Have no complaints, just compliments) running the 2045 pipe with it and the 192 header,combo deal that i got. Don't like the way it fits in my MBX6(pipe is to long for me, it sticks out past the mud guard,,,,,,,,is there another pipe that would work well with this motor???? thanks for the help!

Im running a ofna 086 on my s5 and I love it. I ran it in my truggy this past weekend and I had spectators coming up to me asking what I was running. Not only does it have a pissed off sound, it has a ton of bottom, which I really wasnt looking for, I can break the rear loose on demand. I ordered another pipe, the dynamite 086 to try on a new motor, the reason I like the dynamite is b/c they come hard coated.


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