OK, slightly embarrassed to show pics of anything of mine next to DanH's but I should get a B- for effort (It started feeling like work and I got in the get-er-done mode).
Piccolo tubes made as specified, mounted close to specs +/- 3/8 inch for various mounting issues.
I forgot to get a photo but I routed the tubes through the heater inlet on the firewall and zip-tied the tubes to a meter stick in the cockpit. Here's my measurements of the homemade manometer all in inches while flying and removing shoulder harness to try to read meter stick correctly:
Static: Upper tubes-11/78 Lower tubes-12 1/2
Idle RPM: Upper tubes-12 Lower tubes-12 1/2
130 IAS: Upper tubes 17 1/2 Lower tubes-15 1/4
160 IAS: Upper tubes 20 Lower tubes-14 1/2
Not sure the 160 IAS lower tube measurement is accurate, I recorded it as such but it doesn't fit the trend. Any feedback on my pressure differentials is greatly appreciated.
Full tanks and me yielded a gross weight of 1505 lbs and C.G. of 81.93 in my RV7. The airport weather system reported 30.17 inHg and 59*F, my aircraft altimeter set to field elevation yielded 30.17 inHg and OAT of 64*F. Winds aloft at 6000 in my vicinity were forecast at 4*C (I forgot to record direction), at 6000 MSL my OAT indicated 46*F. Perhaps my aircraft OAT reads 3-5*F high, it's mounted between the 2 and 3rd access bay under the right wing. For the speed test I used 5700 pressure altitude, my best guess at 6000 density altitude. I leaned to approximately 80-100*F ROP on my leanest cylinder (#4) which peaks at 1450*F. I performed 4 runs, heading 360 followed by a right turn to heading 240 followed by a right turn to 120 in an attempt to stay in the same air-mass. I also did a random run a heading 180, I wasn't sure I consistent results were possible with my piloting skill (or lack of) but here goes:
Hdg 360: 160 IAS/ 175 TAS/ 183 GS/ 359 TK
Hdg 240: 160 IAS/ 175 TAS/ 171 GS/ 240 TK
Hdg 120: 160 IAS/ 176 TAS/ 179 GS/ 120 TK
Hdg 180: 160 IAS/ 175 TAS/ 175 GS/ 178 TK
I hope to have Excel on my computer in the next couple days, if someone else could enter my info in the spreadsheet that would be great. The rough avg speed is 177 knt TAS with an IAS of 160 so calibrated air speed should be close to +1 knt at this airspeed I believe.
For my purposes the primary purpose of adding the ramp/bump was for CHT cooling, here's some screen shots of my EFIS during the above test. All screen shots here were without the ramp/bump under the above described conditions.
This shot is after a 3 minute taxi and engine runup after a cold start, CHT's all around 300.
At level off after takeoff and climb at 130 IAS from 960-6000 MSL.
Screen shot after all full power runs.
Screen shot after landing and 3 minute taxi back to the hangar.
I've re-installed the ramp/bump and hope to get a test flight done in the morning.