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Chris Walterson Q Tour - 2.5L Subaru - almost finished 

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30 окт 2024

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Комментарии : 8   
@FlyMeAirplane
@FlyMeAirplane 3 года назад
I have 1400+ hours on the Q200 that I built. Please, I'm trying not to be critical but trying to point out stuff I've learned over the 35 years that I've been flying my Q200. The tiny tail wheel. Be careful rolling over a hangar door entrance. The tail pivot bolt can catch on a hangar rail and rip off the wheel. I put my pivot bolt in upside down due to that. I went to a larger, softer wheel because the little hard one made so much noise! Be careful using a lead acid battery over the metal cables to the rudder. Obviously an unsealed battery can leak acid and eventually the cable will break. I built a battery box to seal the cables from the battery. Speed: 2 place I come over the fence at 90 mph but flare and touch down at 64mph. Single place I come over the fence at 85 mph. Oh, I use 28lbs in the tires. I found if you run really high pressures you bounce much more on landing! O2 sensors are generally incompatible with leaded fuels. The big hole under the center arm rest does reduce the stiffness of the fuel tank, from a structural standpoint I'm not a fan of that. Along that line, the big opening behind your head is supposed to have a vertical member to Stiffen the top of the fuselage and transfer the load from the main wing, I'm not a fan of the big hole. Your white interior paint... I've found that it reflects a ton of light onto the canopy and is really annoying. I've gone to all dark grey or black because of that. Your gear adds a lot of weight. Not sure what your engine and cooling system weighs. My Q200 is 640lbs empty so yours being over 110lbs heavier will increase your stall speed. Flutter: I tested to 250 mph with everything built to the plans. Man, I hate to be a real Debbie Downer but the Subaru 2.5L has not shown itself to be a reliable car engine. The design of that engine puts the cylinders too close together and the head gasket doesn't have enough area to seal. This has resulted in many engine failures with no way to see it coming. Also makes it hard to cool the cyls evenly. LINK www.cashcarsbuyer.com/subaru-engine-problems/ or www.wheels.ca/top-ten/seven-engines-to-avoid-like-the-plague/ Maybe yours isn't one of the problem years? I really hope it all works out for you!
@grandenauto3214
@grandenauto3214 3 года назад
The Subaru head gasket is only a problem if not dealt with, once fixed it isn’t a real issue, and I’ve never seen a catastrophic problem… you see it coming for awhile.
@FlyMeAirplane
@FlyMeAirplane 3 года назад
@@grandenauto3214 But your info might be related to a car where the average power is 15%. Planes are 75% or so, especially if he's going to use boost. There is probably very little info on that. It just exceeds my caution margin!
@grandenauto3214
@grandenauto3214 3 года назад
@@FlyMeAirplane True, but if it is repaired before he puts it in there won’t be a problem and depending on what engine was used it won’t be a problem… the turbo models didn’t have a head gasket issue. Saying that the engine isn’t a reliable car engine is not really accurate as it is totally reliable if the issue is addressed and in cars it is reliable but you have to know what you’re looking for…. On the plus side, fuel injection, no carb heat, no thermal shocking, ease of maintenance, better mileage, better power, cheaper gas, there are lots of owners who fly the Subaru without any issues at all. You need to understand what you have and how to get the best out of it.
@FlyMeAirplane
@FlyMeAirplane 3 года назад
@@grandenauto3214 Ya, 35 years ago I installed the Cont 0-200A thinking that any day there would be a better engine and I'd switch... I'm still looking! The 0-200A is a dinosaur but it's pretty bullet proof. Heck, I even pulled off the electronic ignition and went back to two mags due to engine start issues!
@mercedescherokee6853
@mercedescherokee6853 3 года назад
256ibs on the engine wow! I'm looking at building a q2 using a yamaha apex engine
@MartinSage
@MartinSage 2 года назад
I am a little cautious of guys who think they are smarter than Burt Rutan😁
@codac493
@codac493 3 года назад
I'm sad I was working during this. I wanted to ask questions with the camera on the plane.
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