Nova Rossi factory break in procedure.

Discussion in 'General RC Boating Forum' started by Terry Keeley, Nov 23, 2019.

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  1. Nov 23, 2019 #1

    Terry Keeley

    Terry Keeley

    Terry Keeley

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    Rod put me on tho this. 39+K at 320F for 10 mins! Then another gallon in the car until it's at it's peak.

     
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  2. Nov 23, 2019 #2

    Glenn Quarles

    Glenn Quarles

    Glenn Quarles

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    It’s even more impressive in person!!! When I was at the factory a few years ago I hung out with them as they broke in a factory driver’s motors. It was much longer than that ( about an hour total over 3 runs) and I was remembering more rpm. When it was done, they put to driver’s pipe of choice on it and checked to make sure it got to a minimum rpm before they decided if it was good enough. Basically it was ready for the first heat when the driver took it out of the box!

    GQ
     
  3. Nov 24, 2019 #3

    Geraghty

    Geraghty

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    There is an absolute ton of rpm in these motors.....all we RC boaters have to do is figure out how to turn it loose......lololol
    To all you guys that modify and Dremel a motor to death......just listen to this video.....
    If modifying the motor was a good idea ...all Nova would have to do is leave it in the CNC an extra 5 minutes....
    Think about it.....Novarossi knows how to build a motor.....
     
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  4. Nov 24, 2019 #4

    Terry Keeley

    Terry Keeley

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    That's what I'm hoping to do with the new run in stand I'm building this winter. Any idea what fuel mix they use during break in? To set the needle do they shoot for a certain head temp? Peak it out and back off 1000 revs? Any idea?

    Bet you're heading in the right direction with your new project!
     
  5. Nov 24, 2019 #5

    Glenn Quarles

    Glenn Quarles

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    Hey a Terry, I think they were using something like 20% nitro, 20% oil (castor of course!). Yes the set the needle with head temp.
     
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  6. Nov 24, 2019 #6

    Geraghty

    Geraghty

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    Bet you're heading in the right direction with your new project![/QUOTE]


    Time will tell.....
     
  7. Nov 24, 2019 #7

    Mark Anderson

    Mark Anderson

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    What do they use for load propellers?
     
  8. Nov 24, 2019 #8

    Geraghty

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    Just something to think about....Nitro-methane as RC boat fuel has a shelf life on this earth....
    I believe nitro is never going to go away totally but environmental pressure from the "save the planet" players is totally out of control....
    I can remember when you could buy a gallon of 50% for less than $15.00 at your local hobby shop....
    I realize that was a while ago and those days are gone forever , but , You can't even "ship" a gallon of 50% for $15.00 today....
    Norway has a national law that no mixture of anything can contain more than 25% nitro in its formulation...
    I probably will not live to see it but nitro is really on the endangered species list on this earth....
    It would really benefit "nitro" RC boating in North America to learn how to go fast with lower nitro content fuels.....
    Europe has done this and have been very successful doing this.....
    This is just something to think about....
     
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  9. Nov 24, 2019 #9

    Geraghty

    Geraghty

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    Mark....give me a call..... 1-715-926-6096
     
  10. Nov 24, 2019 #10

    Terry Keeley

    Terry Keeley

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    At about 19:34 you can see the setup with the shroud moved, they're using a heavily cut down airplane prop (maybe wood?). I learned this the hard way years ago testing an OPS 67 to about 25K when the prop I was using let go at the hub. Put about an inch deep gouge in the pavement.

    I'm gonna use Byron fans in my new run in stand, they have their own shield. :)

    Wonder how they ended up at the 39.5K number?
     
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  11. Nov 24, 2019 #11

    RaceMechaniX

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  12. Nov 24, 2019 #12

    Geraghty

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    That is a photo tach the tech is pointing through the shroud.....
     
  13. Nov 25, 2019 #13

    dwilfong

    dwilfong

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    No load low nitro ......So how dose this relate to are boats?????????
     
  14. Nov 25, 2019 #14

    Carl Van Houten

    Carl Van Houten

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    I know ya'll are talking about the small engines but we switched to 25% nitro about three years ago in our heat racing 7.5cc Nova Rossi engines and when we told what nitro content we were running none of them believed us. I have never put anything but 25% in mine. Mike went up to 30% but the only reason he did is because he couldn't match my lap times. LOL
    Its works! I will NEVER put high nitro in my 46 outboard. I have been running the same plug for about 2 gallons of fuel too.
     
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  15. Nov 25, 2019 #15

    Jeff Lutz

    Jeff Lutz

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    I don’t think I’ll be taking your advice anytime soon.... I run a couple of Nova 46’s and it took some work to get them launching a rigger in all weather conditions and radar 10-15 mph faster than stock form. I do most of the work on my lathe and mill , but, a little bit with a dremel too.
     
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  16. Nov 25, 2019 #16

    David Murany

    David Murany

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    The load is created from the pusher fan. We bought a 12 broke in this way and the piston was black on top and the fit was really good.
     
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  17. Nov 25, 2019 #17

    John Beardslee

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    John Ackerman had a break in stand that used some kind of special prop that Kavan out of Germany made. His stand used flex shafts that drove the prop and were at 90 degrees so you could run a pipe on the engine. I
     
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  18. Nov 25, 2019 #18

    John Beardslee

    John Beardslee

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    Dave, like a ducted fan model airplane fan?
    Thanks John
     
  19. Nov 25, 2019 #19

    Kris Flynn

    Kris Flynn

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    I would argue that Novarossi really know how to get HP using the least amount of fuel possible (efficiency)...While these days a lot of new motors run great out of the box, a few tweaks really wakes them up...mainly Head volume and head clearance to suit 50% + nitro.

    Is this stock motors and no mods? Maybe just head clearance set/lowered? If so, that makes a lot of sense from what I understand about the head volumes and timings on that motor.

    be careful, you will get slaughtered for talking about them like that lol
     
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  20. Nov 25, 2019 #20

    Geraghty

    Geraghty

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    Do whatever you like .......I am happy for you that you have been successful with your approach to RC nitro boating....
    All I said is there is RPM in a "stock" motor we have never touched.....
    I am sure Novarossi loves your approach to motor and set-up tuning.....they make new parts every day....
     

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