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  1. B

    Crankshaft hub bolt spacing dimensions 0360 Lycoming

    Any one have these by chance? Thanks Ken
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    Fuel flow GPM/PSI on gravity fed system?

    How is this calculated? Two tanks, t'd together into one supply line using 3/8 fuel line. Thanks Ken
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    Don Hillberg.... have a few questions.

    You had mentioned a while back that on a Helicom COM II you had soft mounted the main gear box on an aluminum plate. Can/will you detail just how you did that a little, they definitely need it, also what did you do with the Mast support block and struts? Ken
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    Welding question

    Can regular steels be structurally welded to Titanium. specifically 4130 to 3al-2.5v
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    Input on the cause of Rotax 912 engine's serious shaking.

    Starts right up, no kick back, no sputtering or coughing, no missing, idles but goes from bad to worse on the engine shaking as RPM is increased, no difference when mags are tested, shakes at an idle and so badly at 2500 rpm that kept there or higher I've no doubt would shake itself right out of...
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    Marvel-Schebler MA-4-5AA question.

    Any one by chance know the CFM flow rate of this carburator? Ken
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    Wiring information on Rotax 503

    Friend of mine is putting a single carb 503 on his Challenger II which currently has a dual carb 503. Problem is, the engine wiring connectors on the single carb is different then what is on the aircraft, also wiring colors differ. Any one have an idea where one might get some wiring...
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    Baby Bell/Safari helicopter crash, pilot walked away.

    These so unfortunate accidents can be very helpful to those building similar ships, which i am so am hoping more detail is forth coming. Pilot walks away from helicopter crash | Local News - KCCI Home Ken
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    Strength of material question.

    I apologize about the vague title but not real sure how to ask this question. As an example, using a thread having a breaking strength of say 100 pounds and you wrap a single strand in repeatable loops would the resulting loops breaking strength be linear with each additional loop? Thanks Ken
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    Walking Beam

    I've been around helicopters since 1970, having built one and owned another and now building yet one more and for the life of me I've no idea what a Walking beam is with regards to helicopters. I see it mentioned from time to time but still there is no clear picture what it is. Anyone?, better...
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    Gear thrust direction.

    In the picture you can see the set up as it would be installed (Well approximately :D) Looking down from top the pinion turns CW. Am wanting to adapt tapered roller bearings in the gear box case with an orientation that best accepts the gear thrust. Question is, which way would the thrust...
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    Lost Log books

    What kind of hassle can a friend of mine expect on duplicating a lost airframe log book? He has the up to date engine log book. Aircraft: Challenger II Ken
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    6A 250vac switch question

    What would this be equivalant too used with DC?
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    Discount Code for Aircraft Spruce

    Appears to be 7.5%. not sure if it's on everything but worth a look see if you are needing something, good through 01/05/15. ACSNY5
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    Year almost gone

    Can't belive it is all but over for 2014, seems almost like it never was, just a blurr, this year has gone faster then ever. Anyone else experience that ? Even worse, got squat done from my 2013 plans for 2014 :(
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    Any Heli builders on HBA?

    Have owned 4 Airplanes and two Helicopters and enjoyed both but.....my heart is in flying Helicopters. Don't see a single person in the current process of building a helicopter here and it's hard to believe that I'm the only one. Any others in the actual process of building a helicopter? Ken
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    Control cable stretch specifications.

    I had it and thought it was saved but can no longer find it. Any one know what % of the minimum breaking strength cable is stretched at to be called Pre-Stretched? It's not the mil-spec 60% and 1.5 stretch length limits that I'm after. Thanks Ken If I find I'll post that figure.
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    Weight of component question.

    LOL, I know this is simple but just cannot get my mind going tonight. Aluminum weighs .09750 LB/CI The component volume is 1.049 CI Trying to figure what it would weigh in ounces. Let me know how :) Thanks
  19. B

    Component Part Number suggestions.

    Having to make several hundred components in my helicopter build and I would like to create a part number system for it, looking for suggestion/ideas that would bring some logic to those numbers rather then just random numbers and letters. Having modeled and machined a number of these components...
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