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Old 07-13-2010, 08:29 PM   #1
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Default OLDER RB QUESTIONS

I bought an older or old kyosho mp 777 with a RB concepts motor, now I have an air leak and can I fix it or do I drop the cash on a new one. I just dont know what motor I got.

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Old 07-13-2010, 09:16 PM   #2
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it depends how much compression is left ? if not than get a rb hobby 9 5 port (s5) its a good engine its easy, to tune once you break it... in im not a great tuner and got it to start and run.
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Old 07-13-2010, 09:20 PM   #3
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Dont know how much compression it has but is really fast. Is that RB your talking about a comp motor?
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Old 07-13-2010, 09:29 PM   #4
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Dont know how much compression it has but is really fast. Is that RB your talking about a comp motor?

it would say its a club engine/comp engine, but they can be somewhat of a pain to break in .
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Old 07-14-2010, 08:02 AM   #5
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RB engines are very hard to break in. They are super tight. The RB hobby9 is a sport engine.
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Old 07-14-2010, 10:46 AM   #6
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If you can get the serial number off the side of the engine we might be able to figure out what engine you have.
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Old 07-14-2010, 11:47 AM   #7
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RB engines are very hard to break in. They are super tight. The RB hobby9 is a sport engine.


the hobby 9 5 port isnt a joke though in club racing, +1 yes rb are hard to break in if you use a heat gun though its... not so bad i think i would be easier to break in if they dint tune them, so rich from the factory and than haveing to lean both needles out .


yea i wouldnt remmend it to beginners. and im still new to itatian engines
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Old 07-14-2010, 01:01 PM   #8
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i was told the RB Junior 9 is a good motor but im not sure i know were i can get one for $141.99 but i dont know if thats a good deal
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Old 07-14-2010, 01:27 PM   #9
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i was told the RB Junior 9 is a good motor but im not sure i know were i can get one for $141.99 but i dont know if thats a good deal


$141 dollars you must be looking, at the hobby 9 sport 3 port if so yea thats a good deal its new right ?

if you want the hobby 9 5 port its, about $209 thats the best price and its a
allsome engine.
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Old 07-14-2010, 01:52 PM   #10
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You could just send the ole RB engine out to
be serviced. Contact Rex (22Racer), he can look
the engine over for you and let you know if it's
worth repairing. He offers complete nitro engine
service and for a decent price too. Here is a link
to his thread,
http://www.rctech.net/forum/nitro-of...ebuilding.html
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Old 07-14-2010, 05:17 PM   #11
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Its A RB SH and the # 0210344
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Old 07-15-2010, 06:47 AM   #12
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Quote:
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Its A RB SH and the # 0210344

That engine is the old S3, that is a sport/entry level engine, this is the same as the current Junior 9 which is a 3 port engine. The Hobby9 is a 5 port engine that is the same as the old S5 engines, these are great engines to start off with in the hobby as they aren't overpowering and will help you keep the car under control.

If it is for sure the Hobby9 that you can get for $141 that is a good price as that's probably what the hobby shop paid for it. Plus it will be more powerful than the engine currently in your car.
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Old 07-15-2010, 07:13 AM   #13
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Quote:
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That engine is the old S3, that is a sport/entry level engine, this is the same as the current Junior 9 which is a 3 port engine. The Hobby9 is a 5 port engine that is the same as the old S5 engines, these are great engines to start off with in the hobby as they aren't overpowering and will help you keep the car under control.

If it is for sure the Hobby9 that you can get for $141 that is a good price as that's probably what the hobby shop paid for it. Plus it will be more powerful than the engine currently in your car.



shoot the s5 is plenty fast enough, for me compared to a nova 3 port i used to run .
i run my in my truggy. is the rb s5 a mid ridge, engine top end, or bottom end engine ?
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Old 07-15-2010, 09:57 PM   #14
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thanks for the info. Crap I can't control the car as it is and I was going to buy a high dollar motor. One more question can I still get parts for it like piston and sleeve?
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Old 07-15-2010, 10:01 PM   #15
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Oh by the way I am running about 220 to 260 heat range and if I richin it up runs like shit.
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