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About Turbo

  • Rank
    Advanced Member
  • Birthday 05/07/1945

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  • ICQ rthrpwll@gmail.com

Profile Information

  • Gender Male
  • Location Columbia Gorge, WA
  • Interests Avid model C, windsurfing, hunting

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Turbo's Activity

  1. Turbo added a post in a topic Bush gear topic reopened   

    Top of seat truss - big compression forces!  Potential for column failure.  Need to maybe reinforce in two dimensions?
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  2. Turbo added a post in a topic HOw to bend the gear   

    W-W-Wait a minute!  A hard landing should extend the spring, not compress it.  So I don't understand it unless the extension is limited by a metal-to-metal hard stop.  I'm sure that's what you meant.
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  3. Turbo added a post in a topic The value of streamlining   

    Forward-facing flats are aerodynamic sin!
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  4. Turbo added a post in a topic Another engine out from an oil injection failure   

    Gotta love those oils rated both tc-1 and tc-w3.  They are good in either application!  Thanks to Chris B. for that informational tidbit!  Incidentally, I was at a shop that services snowmachines, and the mechanic there said he had seen evidence of scuffing with Amsoil at 100:1.  Maybe the particular case was one in which the cooling wasn't as good as we typically get with our application.  Don't know enough detail here.  
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  5. Turbo added a post in a topic Another engine out from an oil injection failure   

    Hey, all technical progress is made by us nerds!
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  6. Turbo added a post in a topic How do you tall guys do it?   

    At least your headset will provide some protection!  I take it you're still (re)building, and have not sat in the slingseat for two hours straight flying - yet.  It's right about at 2 hrs that my lower legs cramp up!  UGGH!  That's right about time to land and re-fuel anyway.
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  7. Turbo added a post in a topic How do you tall guys do it?   

    With the stock setup, I can hold the plane stopped to about 4000 rpm, enough, I think, for a decent mag check.  Following Fred and RFPhntmfxr's thoughts, I am inclined to remove the toe brakes entirely, actuate a single master cylinder remotely with a bicycle's Bowden cable and brake lever on a highly curved stick, which would move the top of the stick back towards me, so I could still swing my leg over it for entry & exit.  Then I would cut the two rudder interconnect tubes and re-weld them together with the pilot's side pedals (minus brakes) clocked forward to give the same firewall clearance on both sides.  Will that buy me enough footroom?  I don't know.  Will the lost ability to use differential braking for sharp turns on the ground be a problem?  Also don't know.  Will that lost capability deprive me of a way to escape an impending groundloop?  I doubt it.  There's quite a discussion going on in another thread, but I know that some of the guys are not shorties, so thought I'd ping y'all for ideas.
    P.S. that looks like a good idea.  How about headroom?  New slingseat with less padding?
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  8. Turbo added a topic in Avid Model C   

    How do you tall guys do it?
    I am 5'11", and have a hard time squeezing myself into the Avid C's confined cockpit.  It seems my legs are too long, as my knees are inches from the top of the stick, and the rudder pedals with toebrakes contort my feet to the point where my lower legs cramp up.  This is disconcerting to say the least, especially when contemplating an imminent landing!  My slingseat is all the way back.  So, you guys that are as tall as me or taller:  how do you do it?  Is the Mark-4 cockpit any bigger?  My bird doesn't seem to want to fly well with feet off of the rudder pedals.
    So you 6'-plus guys:  how do you deal with this limitation?  Or is this airplane only for shorties?
    • 5 replies
  9. Turbo added a post in a topic Bush gear topic reopened   

    I have often wondered why nobody has criss-crossed the space below the fuselage with slightly longitudinally offset gear legs, then use the kind of vertical spring-shock arrangement above the wheels.  The Just Aircraft SuperStol gear pivots about the centerline keel.  Criss-crossing the lower fuselage give even better geometry, with shallower angles, and hence even less squat as the gear compresses.  It puts more stuff out in the propwash, though.  Still, this concentrates virtually all the gear's force at the shock/spring attachment.
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  10. Turbo added a post in a topic Done getting bit in the ASS by toe brakes   

    "Rimless" shoes make a huge difference, as they don't get stuck under the "V" bar in the middle.  I can't imagine how someone with large feet (size 11 and up) can safely operate the Avid with the stock setup.
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  11. Turbo added a post in a topic Done getting bit in the ASS by toe brakes   

    Re-reading paragraph 5 of Ken Kelso's blog brings a significant issue to light.  This may well be why using differential braking to stop a groundloop with our stock toe-brake setup is so difficult.  The toe brakes exacerbate the problem instead of helping.  
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  12. Turbo added a post in a topic GPL Starter For 582   

    While I was using premix, my plugs needed to be pulled then shaken & blown out prior to flying, or the engine wouldn't start.  Even going to the extended tip plugs didn't solve the problem.  After putting the oil injection system back in play this problem has totally disappeared.  I have the pull-start.  It saves weight, not only from the starter itself, but the battery as well.  I don't consider a restart while flying as feasible, however.
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  13. Turbo added a post in a topic Dash redo and organize   

    Drag is a myth!
    Seriously, though, how about two flat screens: one is an efis with flt parameters and engine info, second is gps.  The second can be as simple as a tablet, as many have the gps chip built-in.
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  14. Turbo added a post in a topic Done getting bit in the ASS by toe brakes   

    I'm not sure I have the skill to pull that off.  For this old man, things seem to happen faster.   I always land without braking, then try to apply them equally to slow the airplane down.  A single master cylinder would cure the issue of uneven braking and its negative effects under normal circumstances.  If the runway is sufficiently wide, one might consider landing diagonally on it to lessen the crossflow component.
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  15. Turbo added a post in a topic Conumdrum..............   

    I heard that the swept fin and rudder on the C-150 loses authority at high AoA, and that the TD mod really only works well on the older straight tail versions.  This loss of authority makes it hard to control on landing.
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