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Old 08-31-2006, 02:55 PM   #1
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Default Which Buggy Engine??????

I was looking at getting a O.S .21VZ-B but after reading the forum that said that it only lasted 2 gallons I thought to try another engine.
How realiable are these two engines?

* Nova Rossi RX21P5TX
* RB S7

Has anyone heard of any problems with them?


Last edited by Inferno; 08-31-2006 at 03:09 PM.
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Old 08-31-2006, 03:33 PM   #2
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here is the answer to your question

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Old 08-31-2006, 03:44 PM   #3
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We have an Rb S72 We have had it for 1 1/2 years, I just finally took it apart last week for the first time to replace the rod. It has approx 3 gallons through it, it ran away wide open so I'm replacing the rod early for extra insurance. We have raced agianst the C6 and the Ws73, in my opinion you dont need to spend the extra cash and the more modded motors may be harder to tune.
My son uses the S72 in his Jammin 1/8 scale, in his Jammin truggy we are running a Novarossi (Top) T21nb, Awesome motor for the $175.00 (www.amainhobbies.com) He hasn't lost a race yet except for breakage, he loves this motor for the money, says it has almost as much as the Rb.
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Old 08-31-2006, 04:00 PM   #4
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my friend purchased the jp modified version of the v spec and he loves it way to much power and it holds a tune well just my two cents
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Old 08-31-2006, 05:16 PM   #5
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An RB S7 is a great engine, but its worth the extra money for the WS7. Even when the weather changes 20 degrees you only have to turn the needle like 1/8. It holds a tune great and has the perfect amount of power for a buggy. The only thing is they take a while to break in if you do it right. I started mine with a heat gun until it lost all metal to metal pinch and it came to life after about 3 gallons. Great Engine!
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Old 08-31-2006, 06:28 PM   #6
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Old 08-31-2006, 06:31 PM   #7
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OPS Speedster
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Old 09-04-2006, 03:03 AM   #8
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thunder tiger pro21bxr.....totally insane engine and best bang for ur buck ...u mod that thing and itll rip up anything and everything......i got it in my savage and it wheelies a 9kg truck all over the place!
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