RCU Forums - View Single Post - Engine & prop performance variation with temp
Old 05-04-2013 | 06:39 AM
  #13  
ameyam
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From: Mumbai, INDIA
Default RE: Engine & prop performance variation with temp

Yes. Just for the record I have a GW MX2 30cc, Funtana 125, AW Extra 300 30 cc and AW Yak 90-120 all waiting for me to get my own vehicle. The Reactor Bipe was in the meantime

That wooden prop I chipped was JXF 15x4 on my FS91. Thats not even inverted. I didnt even flick, just moved it to compression, it backfired and chipped. The 110 has so much compression, it throws the model to the left when trying to flick it. It actually cutoff the rubber cover on a friend's stick. My chicken stick has a silicone sleeve. But even with the APC, when I flick, it starts reverse no matter what way I flick. I end up using the starter every time. I tried leaning, it struggles in transition, so was back to my original setting. There is a lot of dropoff in idle once the driver is removed, so ifs quite rich on LSN

I flew the Bipe today. I had removed the baffle for more power last week, so the engine tuning changed. Whatever we set wasnt rich enough and it deadsticked. There was another model running next to me so I realised too late. Bounced and nosed over. I didnt notice the damage and flew another flight that way. It hovered in high alpha with the 16x6 couldnt get it vertical. Still several mistakes high. When I landed, covering on the wingtip was hanging. The balsa had compressed and the top wing brace cracked. Not major damage, fixable but it cut prop testing short. Engine has power, by the way, needs to be setup with a tach coz I cant hear the difference in the last half turn of HSN

Ameyam