Simon's Ultimate 10-200 project

Discussion in 'Ultimate' started by Snap, Jul 18, 2016.

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  1. Jun 5, 2018 #181

    cwilliamrose

    cwilliamrose

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    I'll bet the tool makers on this forum could educate all of us on producing tight tolerance threads.......... I've never had to do it.
     
  2. Jun 5, 2018 #182

    Jean-luc

    Jean-luc

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  3. Jun 5, 2018 #183

    Jean-luc

    Jean-luc

    Jean-luc

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    Simon
    As you can see,this arrangment is done for the Firebolt.I don't know if that's safe or strong enough for serious Ultimate aerobatic.As you are an engineer,may be you can do some calculations,or ask advice to some people like Kevin Kimball.
     
  4. Jun 5, 2018 #184

    Snap

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    Just got back to the hotel and took a paper and pencil. Unfortunately the skybolt method won't work since the AN665-34 fork ends themselves are already too long to work properly. In the latest version with the cut down flat latches you can see in the privious posts (the white ones) the fork end already ran till the bushing on the AN8-bolt, so I would only gain about 2-4 mm which is not enought.

    I should look for a better possibility to get those 1/4-28 threats in the bushings as good as possible. In the metric world I know lots of people and shops, but working with that american stuff is difficult in middle Europa, haha.

    Any ideas?!
     
  5. Jun 5, 2018 #185

    Jean-luc

    Jean-luc

    Jean-luc

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    ernstfokker likes this.
  6. Jun 6, 2018 #186

    Jean-luc

    Jean-luc

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    Or may be,build around 6 cms longer forks for the fuselage and cabane side.Do not use forks and lugs for the spars side,but the Pitts S1 style installation,if you can remove the AN 8 bolt.I am sure AeroGraphic in England could build them,or Bruntons
     
  7. Jun 6, 2018 #187

    cwilliamrose

    cwilliamrose

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    At some point it will make more sense to just buy new wires and be done with it.
     
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  8. Jun 6, 2018 #188

    Jean-luc

    Jean-luc

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    Bill.I am agreed with you.That makes more sense.I think,this is only about the cost.
     
  9. Jun 7, 2018 #189

    Snap

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    It's more about the time frame than about the cost - I'd like to do the stress test of the airframe before august - otherwise I'd have to postpone it till fall.

    Just inquired Russ Ward from vintageaero.com - the fitting flying wires with 71.5 inches are inly 195 USD each - shipping from NZ to Germany is around 120 USD. Has anybody experience with those wires? Sounds almost too good to be true.

    Just shot Bruntons another mail, maybe the reply this time. Unfortunately the phone number won't work from my mobile phone, will try again as soon as I'm back home.

    On the other band I ordered another 1/4-28 tap with class 3 thread. I'm going to try this one and try different core holes and decide how too go on.

    We'll see - baddest thing that could happen is the delay till fall.
     
  10. Jun 7, 2018 #190

    Jean-luc

    Jean-luc

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    I don't know about VintageAero wires quality,but it's a very good price.
     
  11. Jun 7, 2018 #191

    DragonflyDH90

    DragonflyDH90

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    Several people on the forum have wires from Russ, someone will likely reply shortly. Do a search for flying wire discussions and more info will come up.
     

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