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670 with 3/1 C box and IVO 3 blade UL?

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Posted

I am wondering what experience 670 drivers have had with this combination?

I recently put a 670 in my KF mod 1. I have been told it is not enough prop for this engine. I have only flown it once but had an exhaust concern. Have not tried it yet since having a new exhaust built (618 style).

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Posted

What were your RPM and EGT looking like?  They run the IVO UL prop on the 912..

:BC:

 

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Posted

What diameter prop?

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Posted

Did not have the egt working that's why I have not flown it again. It has a 72" diameter. Don't remember the static but it would rev up to say 6500 then gradually drop while still at full throttle but that was with the modified 582 pipe. So Mike Hair built a 618 version he was providing for Rotax Rick but I have not flown it yet.

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Posted

If you have enough pitch to be able to keep the RPM and EGT in check then I don't see why it wont work.  I love my IVO, runs very smooth but with the talk about the kool prop I am close to pulling the trigger on that one.  I have heard from multiple people that the warp pulls harder than the IVO but the IVO runs smoother.  At this point I want the most pull I can get.

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