Scoubidou
Posts: 1566
Joined: 7/7/2003
From: Boisbriand,
QC, CANADA
Status: offline
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I do not have experience with the regular ZDZ-80 but i like so much the super ZDZ-80 RV-J that i bought another one!! It does not shake more than a 100CC twin. You may expect 6500-6600 RPM warm with supersonic muffler on Mejzlik 26x10
This engine use Tilotson carb and it's so smoooooooooooth. Remember that ZDZ have 80CC engines for many many years and they improved the design slowly every year. The super ZDZ-80 is bigger and heavier than RV. It might explain how they keep vibrations low.
Dont' forget to balance the blades and prop hub 
I though the fun would begin with 50CC gassers with Tom's planes but after flying his 33% on super ZDZ-80, i sold my 28% Edge and DA-50. Now, I think the PARTY begins at 33% scale 
My Extra weight 24 lbs, hovers at 1/4-1/3 throttle and i need no more than 50% throttle to do the intermadiate IMAC sequence (power needed only for 45 degree snap roll).
I would not hesitate to put that engine into 35% plane 25 lbs with a tuned pipe.
If you can afford the BME 110-115, go for it, it's a great engine but double price and not required for that plane.
Daniel
_____________________________
Seneca Engineering
http://www.seneca.ca/
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ZDZ-80 RVJ with 33% 260 - 
