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Bungee or springs?

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M.Grass(at)comcast.net
Guest

Posted: Mon Aug 14, 2006 5:31 pm Post subject: Bungee or springs?

All Mono driver can relax now.

  

 I have a question to all Tri Gear Europa pilots. I  opted first not to go the spring route for the reason of lighter weight and a  more distributed load around the load caring tubes versus a centralized  stress point caused by the small diameter of the spring wire where it touches  the load caring tubes

  

 Now I am not so sure anymore. The manual for the  Bungee installation states to stretch the Bungee to about 175% of its original  length or about 1 inch between the marks. My bungee has the marks exactly a 1/2  inch apart. I stretched all Bungee runs to exactly 1 inch or with other words to  200% of its original length. Then I did my load test. The manual  states that about 150kg is needed to get the leg of its bump stop. My  installation will give away at about 170kg load sitting on the shelves (1 human  and 1 builder) but no engine or instrument module and glass installed. No I  start to have doubts if that is even enough. Thinking that I will install a 914  with a CS prop I wonder if this is enough pretension or should I upgrade to the  springs.

  

 I seek now the advise from bungee flyers and the  experienced bungee converted to spring flyer. 

  

  

 Thanks

  

 Michael Grass

 A266 TriGear Detroit Michigan

  

   [quote][b]

- The Matronics Europa-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

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riddon(at)sent.com
Guest

Posted: Mon Aug 14, 2006 11:20 pm Post subject: Bungee or springs?

Michael  

   

The bungee is lighter and, when new and tensioned correctly works well.  Over time it becomes slacker and periodically requires tightening which is a proverbial pain in the ****  once the aircraft is finished.  It is easier if you use the ‘rubber band’ technique with up to 6 separate loops but even those still need tightening from time to time.  The springs are indeed heavier but make the front end firmer and (hopefully!) require nil maintenance.  When I ordered my springs from the factory they told me they had orders for about 40 pairs. That should tell you something about the unpopularity of the job of re-tensioning the bungees.   

   

Cheers.  

   

Richard Iddon G-RIXS  

   

-----Original Message-----

 From: owner-europa-list-server(at)matronics.com [mailto:owner-europa-list-server(at)matronics.com] On Behalf Of Michael Grass

 Sent: 15 August 2006 02:30

 To: europa-list(at)matronics.com

 Subject: Bungee or springs?  

     

All Mono driver can relax now.  

    

   

    

I have a question to all Tri Gear Europa pilots. I opted first not to go the spring route for the reason of lighter weight and a more distributed load around the load caring tubes versus a centralized stress point caused by the small diameter of the spring wire where it touches the load caring tubes  

    

   

    

Now I am not so sure anymore. The manual for the Bungee installation states to stretch the Bungee to about 175% of its original length or about 1 inch between the marks. My bungee has the marks exactly a 1/2 inch apart. I stretched all Bungee runs to exactly 1 inch or with other words to 200% of its original length. Then I did my load test. The manual states that about 150kg is needed to get the leg of its bump stop. My installation will give away at about 170kg load sitting on the shelves (1 human and 1 builder) but no engine or instrument module and glass installed. No I start to have doubts if that is even enough. Thinking that I will install a 914 with a CS prop I wonder if this is enough pretension or should I upgrade to the springs.  

    

   

    

I seek now the advise from bungee flyers and the experienced bungee converted to spring flyer.   

    

   

    

   

    

Thanks  

    

   

    

Michael Grass  

    

A266 TriGear Detroit Michigan  

    

   

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--

 No virus found in this incoming message.

 11/08/2006

  

  

--

 11/08/2006

     [quote][b]

- The Matronics Europa-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Europa-List

peter(at)us-eurolink.co.u
Guest

Posted: Tue Aug 15, 2006 12:59 am Post subject: Bungee or springs?

- The Matronics Europa-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Europa-List

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