ORIGINAL: maxun
do not gamble, this airplanes need a 100cc no less do not use a DA85 the vibration is big, lots of power with big price tag but lots of vibrations. The ticket with this lanier 33% is a 100CC ZDZ, DA or DL you can go wrong. You will be the king of the field.
This is an old quote, but no one responded.
There were two similar series of airplanes from Lanier, one was a 50-80cc and the other was a 100cc, which was the 33% version. The one this thread deals with is the 87" version, (about 30% scale). For the 30% version, an 85cc engine would be a very powerful combination and I would probably recommend it. A 50cc can do great things here as well. It was a versatile airframe in that respect.
The DA 85 and 3W 85 are not really that big on vibration. Some of it depends on the condition of the engine, the prop and spinner, etc. My 3W85 started to shake quite a bit and I sent it in for service. It turns out there was a lot of carbon build-up inside the cylinder which made it a lot less smooth than it used to be.
-Pat