Thanks for the info., I wasn't expecting the 4 stroke to produce more power,
just to be different and quieter! I have had quite a few 4 stroke engines in
planks (in a previous incarnation :) ) and enjoyed the way they ran.
My Nex already has quite a few parts from the VR, basically because I
destroyed my VR a few weeks ago in a dramatic backwards inverted crash! I
have a new VR built and waiting for the gyro to return from its medical
examination at CSM!
The VR certainly has more zip, too much, in that it kept making do silly
things (see above!) but it was so much fun that the replacement was ordered
as soon as the first was determined to be beyond economic repair.
If the conversion kit is so expensive, then I doubt that I'll bother.
Dave Smith, Kuusankoski, Finland
> Hi David,
> The general consensus I've heard from Legato owners is that it is not
> your time. The OS52 4-stroke has about the same Maximum power as the
> OS32SX. However, being a 4-stroke, it has more power and torque in the
> to mid-range and less at high RPMs.
> Unless you are extremely familiar with 4-stroke engines and really love
> them, I would recommend not doing this conversion. The price Kyosho asks
> for the conversion is horribly expensive. You are correct in your
> assumption that the substantial difference is the engine mount, pinion
> and fan. The flapping head part comes from the fact that the Legato kit
> built on the Nexus Deluxe.
> If you're looking for power, then the OS46 conversion is a better
> However, this is not without issues as the 46FX is really too powerful for
> the 30-size Nexus, so you might need to do some tricks like installing a
> longer tail boom and larger main blades. If you want something with more
> zip than the Nexus, I would recommend looking into the Concept 32VR. Even
> with the OS32 engine, the VR is quite a bit faster and more maneuverable.
> It also shares a large amount of common parts with the Nexus, so it is a
> logical upgrade path.
> > Hi gang,
> > I came across the Nexus Legato during a post-flight catalogue browse
> > night, set me wondering whether it is practical to convert my standard
> > to four stroke?
> > Does anyone have the part numbers for what is required? I realise that
> > Legato uses the VR flapping head, but I assume that it will fly on the
> > standard Nex head, mine already has various VR parts, including pitch
> > slider, swash plate, washout, etc. What else would need to be changed -
> > it just engine mount, gears & fan? Is anyone out there flying one and
> > is it like?
> > This is very hard to type as I keep having to dash outside, a Robinson
> > is making very low circuits over our house. An hour ago I was flying my
> > and had a Hughes 500 fly over very low, even though I was flying in the
> > centre of town!
> > Cheers,
> > --
> > Dave Smith, Kuusankoski, Finland