NunavutPA-12
FRIEND
67.8N,115.1W CYCO Canada
I'm on wheel-skis right now so I'll be using our gravel runway.
Gary, maybe he could download that accelerator app you had... that looks pretty cool to me!!
John
Here's what we discussed on the Taylorcraft Forum. It's a potential means to capture and analyze acceleration data obtained with either Android or I-Phones that have imbedded G-sensors. They use that for sensing phone position and other diagnostic and display stuff. It may have potential for testing props and other power alterations. JimC mentioned it and I looked it up but am no expert...but interested.
"Briefly my wife consented to download an acceleration app from Apple to her I-Phone. Three axis X-Y-Z planes with + and - G values ref to phone position. Start run and stop run plots a stream of 3-axis data. Others offer plotting software to export and plot the results. Will cost me a dinner for two her choice.
https://itunes.apple.com/us/app/acce...499629589?mt=8
https://developer.apple.com/documentation/coremotion/getting_raw_accelerometer_events
JimC have you experimented with this tech? It's like ...why is this news? I would have thought the builders and modders would have figured a way to apply this to their alterations by now and discussed it.
Gary"
not that i have time or extra brainpower at the moment.... but I write IOS apps, what would the ideal app look like & track?? doubt there's a big enough market to make it worth writing..(or for apple to approve it after I spend time writing it!!)
Hang in there olde boy, its worth waiting for. Bet you really appreaciate it as soon as you try it!If anyone is curious: My new Catto 84/36 was delayed in shipping from California due, I suppose, to a backlog of orders at the factory. When it was finally shipped by Fed Ex it ended up being delayed at Customs in Ottawa (on the other side of the country!) since I had neglected to designate a customs broker. I believe it's now on the way to me and hopefully it arrives in the next week. Looking forward to seeing and testing it.
Nice problem to have Larry! Looks great! Wait till you see how it will sustain in the climb out. Regardless of what you see static, as soon as you get up and level out push the throttle wide open and see what it will turn it holding your altitude flat. If your engine will spool it up to Redline or just over: You got it all![emoji106] Good Luck160.
Sorry to disappoint, Perry, but I've already swapped propellers. The weather has been warm enough to work in my un-heated hangar, but the light is too flat to go flying, so I changed it over today. So any results I might provide will be strictly subjective, seat-of-the-pants stuff. I did have good intentions, but …..
View attachment 42451
Before: Borer 82/42
View attachment 42452
After: Catto 84/36
My only complaint is that the shiny, new Catto makes the rest of the 'plane look a little shabby!
Larry,I finally got a chance to fly the new Catto prop this afternoon!
1) At idle, it was pulling harder. On the very slight uphill grade from my hangar, at about 800 rpm, I had to stand on the brakes to prevent it from creeping ahead.
2) It is definitely smoother than the old Borer.
3) At full throttle I could only get to about 2600 rpm (indicated - my tach has not been checked for a while).
My oil cooler is about two-thirds covered and yet, at minus 15C (+5F), the oil temperature barely got off the peg (130F more or less). The oil pressure was up around 95 PSI. I imagine there was some power loss there.
I thought I'd try flying it without removing the six pounds of lead in the tail. I couldn't get enough nose-down trim, so the weight is coming out tomorrow.
Landed off airport on the snow of the arctic ocean. Conditions here are almost ideal. I just need a bit more tension in the bungees, another job for tomorrow.
So with the other adjustments that need to be made I wasn't able, yet, to give that prop a thorough test.
I hope to be ski-flying for about another month, while the rest of your are getting your floats on!
Sorry about that, you are correct. I dug out the prop log and it is the W80CM-44 for the 0-360