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Re: Sonex 1517 first flight
Awesome! So much fun to watch another homebuilt plane take flight! Again, congrats! Can't wait to see it at OSH next year!
- Mon Oct 12, 2015 9:28 pm
- Forum: First Flights!
- Topic: Sonex 1517 first flight
- Replies: 29
- Views: 15387
Re: AeroVee RPM on first flight
I have 125 hours on my AeroVee and have never seen 3,200 rpm. Climbout generally never exceeds 2,900 rpm. I have the Sensenich ground adjustable prop and it's on its finest setting, so I can't get any more RPMs out of this particular prop. Some other AeroVees easily get 3,200-3,400 rpm. I can someti...
- Sat Oct 10, 2015 4:22 pm
- Forum: Aerovee
- Topic: AeroVee RPM on first flight
- Replies: 19
- Views: 7377
Re: runs hot
One cylinder didnt have any compression, the exhaust valve was too tight , removed the head to see if the valve was burned and it wasent I lap the valve and the seat but on installing the rocket hold down bolt snapped before it got to the 14 ' lbs, so i ordered it form sonex When you say the valve ...
Re: Compression Ratio Calcs
SonexN76ET wrote:Mike,
While you have your engine apart calculating your compression ratio, you may also want to lap your valves in an effort to improve performance.
I recently had new valves put in, and that was part of the process :-)
- Fri Oct 09, 2015 12:49 am
- Forum: Aerovee
- Topic: Compression Ratio Calcs
- Replies: 10
- Views: 3639
Re: Special Airworthiness Certificate issued!
Sonex1517 wrote:After 4 1/2 years of building, Sonex 1517 became N1517S today.
Woo, hoo! Congratulations! Now the building withdrawals begin, as do the flight anxieties ;) You're going to have a blast!
- Fri Oct 09, 2015 12:48 am
- Forum: General Discussion
- Topic: Special Airworthiness Certificate issued!
- Replies: 28
- Views: 7222
Re: Compression Ratio Calcs
Mike, I double checked your math and it seems correct, but I'm pretty sure you are aiming for the wrong compression ratio. Should be 8.0:1. Seems like your original settings were pretty close to correct. Why is your deck height so far outside Sonex's table now? Are you using different pistons? Yes ...
- Thu Oct 08, 2015 9:20 pm
- Forum: Aerovee
- Topic: Compression Ratio Calcs
- Replies: 10
- Views: 3639
Compression Ratio Calcs
I'm rebuilding my AV 2.1. This time I decided to measured the actual CC's of the heads, and so have been calculating the barrel shims necessary to get the 8.5:1 ratio for av gas. When I built the engine the first time I had 2 shims on each barrel: a .045 and a .060 (that's what they measure with a m...
- Thu Oct 08, 2015 1:03 am
- Forum: Aerovee
- Topic: Compression Ratio Calcs
- Replies: 10
- Views: 3639
Re: Insurance
I needed 5 hours of dual, and another 15 hours in a tail dragger. Just over $1,600/year for $35K of hull + liability.
- Wed Oct 07, 2015 1:30 am
- Forum: General Discussion
- Topic: Insurance
- Replies: 8
- Views: 2451
Re: Strike two :(
4 - torque it I would suggest you not torque the plugs. Just seat them firmly. I used the torque values at first and found them way too high for these heads AND for the plugs themselves. I actually snapped the head off a plug (so the threaded end was left in the engine head) before I got to the pro...
- Wed Oct 07, 2015 1:28 am
- Forum: Aerovee
- Topic: Strike two :(
- Replies: 23
- Views: 7368
Re: Brake bleeder upside down?
I retrofitted the brakes onto my Sonex, and the bleeder is at the top. It's worked fine with no problems.
- Sat Oct 03, 2015 11:13 pm
- Forum: Onex
- Topic: Brake bleeder upside down?
- Replies: 9
- Views: 2947
