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HomeAircraftHelicopterGasser Model RC HelicoptersOther News  26.3 cc on a Quickdraw Pipe...
04-08-2014 02:42 AM  4 years agoPost 1
Doug Darby

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Dallas, Texas

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Toxic Al has been working on a new configuration and displacement engine that can be bought as a complete unit but also can be bought as an upgrade kit for any of his VX 270TT motors.
We have been testing a production version of this for about 4 months that is performing quite well in numerous configurations. By that I mean we have tested it with a conventional RJX muffler and it performs great with a head speed of 1950 (13,450 RPM). I have a nice video of it with the RJX that I will post soon but for now I will post the video I have of the same engine with the Quickdraw Pipe and a 6" silencer. In this configuration it is running at 2150 HS in a hover and pulls down to about 2100 under full collective (14,500 RPM) In this video Mitch has it set at 12.5 degrees of pitch running Cyclone 695 blades. As for engine cc the stock 270 is 25.4cc and this configuration is 26.3cc. ( A stock 231 is 22.5cc for reference)
We have tested everything from the stock 22.5 a 29.5cc configuration and after flying the poop out of this particular engine this weekend Mitch said it has more power than any of our other test configurations.

More importantly than the power Al has spent many hours balancing this configuration to minimize vibrations. To quantitatively measure whether the vibrations are better, I have downloaded vibration logs from the Vbar on multiple flights from all the engine configurations and nothing comes close to the smoothness of this particular configuration.

Here is the video of one of our flights from last Saturday... You be the judge...

Watch at YouTube

doug

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04-08-2014 07:33 AM  4 years agoPost 2
Toddc72

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weed,ca-usa

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Looking good Doug. You guys keep it up.

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