Recent content by pfarber

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  1. pfarber

    Do airboat gear drives really work?

    Air Trikes PSRU is good up to 400HP with the SP-5 unit. Less than 30lbs. Only issue is you will need to get a bellhousing of some sort. They don't seem to have anything more than a few few Subaru motor housings. Also less costly.
  2. pfarber

    what can be logged toward repairman cert or A & P?

    FAR 65 Part Sub D is the law. whatever 8900.1 seems to be something you randomly googled. Stop randomly googling stuff. Also, 65.77 clearly states: At least 30 months of practical experience concurrently performing the duties appropriate to both the airframe and powerplant ratings. 65.80...
  3. pfarber

    what can be logged toward repairman cert or A & P?

    How do you show time (18/30 months) with a logbook? A day has a set definition. The time requirements are pretty (or should be) ironclad. The logbook will show knowledge, but not time like a (wait for it) time card will. The FAA never said that you have to be paid, but good luck working for...
  4. pfarber

    what can be logged toward repairman cert or A & P?

    THis is a BAD idea. Unless you personally built that unique aircraft, you simply don't have the knowledge of the inner workings to do a proper condition inspection (Part 43 Appendix D is a joke). Can you spot all the forms of corrosion? Know what a proper rivet looks like? Have the tools to...
  5. pfarber

    what can be logged toward repairman cert or A & P?

    The time requirement for A&P is strict. 1900 hours in Part 147 or 18 months under the supervision of an A&P for each airframe OR powerplant, or 30 months total for both. You must prove this. TIme cards/paystubs are usually ironclad. A logbook? Not so sure. That only gets you the the...
  6. pfarber

    Thickness of 6061-T6 Wing Ribs

    I meant Northrop, not Norton... I was thing Horton but somehow butchered Northrop and Horton... He's back in class so I'll try and see if he can bring in something from the family archives.
  7. pfarber

    MOGAS/E85 etc.?

    Wait, wut???? At 130mph * 50 = 6500 miles
  8. pfarber

    Another affordable avionic - iLevil AP

    You really shouldn't get on your knees for Garmin. Some of their gear is hot garbage and stopping the 430 to 430W upgrades was a pure money grab. Also, the NTSB has quite a few IFR incidents with G5s rebooting or giving an AHRS alignment error... in actual IMC. So yeah, tell Garmin to fix...
  9. pfarber

    MOGAS/E85 etc.?

    E/AB. Build or buy. The GA fleet of Piper PA28s and 152/172 is hot garbage. Once the old guard of pilots who solo'd in Piper Cubs finally dies off, we'll have people who understand modern electronics and practices. I hate to make car to AC comparisons, but when they work: A modern car...
  10. pfarber

    Air conditioning electrical power question

    Many racing circuits use peltier coolers.
  11. pfarber

    Air conditioning electrical power question

    Im still waiting for the laymans explination thats better than mine. Buehler? Buehler? There is a huge difference in being a good engineer and being a good teacher. Saying 'any firsy year thermodynamics student' would understand reeks of condisention. And yes, gas law. Pressure and temp...
  12. pfarber

    Air conditioning electrical power question

    Complex? Lol no. Poorly explained, yes. How can anyone thats ever used shop air not understand my explaination? you blow compressed air out if the nozzle and its cold. Or simply wave a hand and say hur dur im an engineer thermodynamics!! Parent may be an engineer, but not a great teacher...
  13. pfarber

    Air conditioning electrical power question

    I didn't say it was incorrect, just that it was long winded and not informative. To wave your hand and say 'thermodynamics' is helpful how? And again the base principal is not thermodynamics, but gas law. You reduce the pressure of a gas and it gets cold. The air to air ac cycle stays at...
  14. pfarber

    Transport Canada report of Garmin GI275 Failure in IMC

    For the cost of ONE GI275 you can install DUAL uAvionics AV30s and have the same information with a backup.
  15. pfarber

    Air conditioning electrical power question

    Long winded and not really informative. In laymans terms: When you let compressed air expand, it cools the surrounding area. Imagine pointing an air nozzle at a piece of metal. Pull the trigger and the moving air cools the metal. Now if you use the cold piece of metal to cool cabin air, you...
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