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composite gear

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John Bolding

Joined: 23 May 2006
Posts: 281

Posted: Sat Jul 29, 2006 6:23 am Post subject: composite gear

Glass gear is not a new deal.

 I think all the Rutan designs use glass legs . My  glasair is over 20 yrs old (my how time flies when you're having fun) and  no sagging (yet) but there were a few that did due to incomplete cure at  manufacture. The fix was pretty painless, few more layers of glass and put it in  the sun with black plastic on the legs for a few hrs.

  As everyone on this list is aware, an  airplane is a wheelbarrow full of compromises swimming along in tight formation.  

 Something not mentioned yet is the MUCH worse  corrosion properties of 7075t6 used on the aftermarket gear .

  

 My 701 is going on floats to be used in saltwater  and Chris OKed  6061 instead of 2024 as speced in the early style gear  which is used for float operation.

  

 LOW&SLOW   John

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Malcolm.HUNT(at)networkra
Guest

Posted: Thu Aug 03, 2006 12:07 am Post subject: Composite Gear

Threat Friends  

   

On Monday I had all the steel components welded up and can now take stock of the landing gear weights.  

   

I have weighed the components, the two composite legs (supplied by CZAW but look the same as the ACS) weighed total of 5.13 kg with the steel gear chambers (6B11-5CZ) and the fuselage mounts (6B11-14CZ) weighing a further 2.72kg.  

   

So the grand total is 7.85kg or 17.31lb.  

   

The CZAW plans show purpose made steel axles similar to the Grove 5012, I would prefer to use the Grove Wheels set up but this would mean cutting away the composite which I’m not keen on doing, so will probably go with the purpose made CZAW axle units.  The two axles would come out at about 2kg or 4.4lb total.  

   

There is some deepening of the gear channel 6B5-5 and its thickness goes from .032” to .040” but this would not give much extra weight.  Sundry nuts bolts and washers not included in above as they will be very similar to aluminium gear fittings.  

   

Hope this of interest.  

   

Malcolm Hunt  

CH601XL Plans builder in England  

   

   

   

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The content of this email (and any attachment) is confidential. It may also be legally privileged or otherwise protected from disclosure. 

 

  

This email should not be used by anyone who is not an original intended recipient, nor may it be copied or disclosed to anyone who is  

not an original intended recipient. If you have received this email by mistake please notify us by emailing the sender, and then  

delete the email and any copies from your system. 

 

  

Liability cannot be accepted for statements made which are clearly the senders own and not made on behalf of Network Rail. 

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Malcolm.HUNT(at)networkra
Guest

Posted: Thu Aug 03, 2006 12:47 am Post subject: Composite Gear

David Wright has corrected me; I meant the salutation to read Thread Friends.  No reflection on inner thoughts!!!  

   

Best wishes  

   

Malcolm  

         

  

From: owner-zenith-list-server(at)matronics.com [mailto:owner-zenith-list-server(at)matronics.com] On Behalf Of Hunt Malcolm

 Sent: 03 August 2006 09:03

 To: zenith-list(at)matronics.com

 Subject: Composite Gear  

  

   

Threat Friends  

   

On Monday I had all the steel components welded up and can now take stock of the landing gear weights.  

   

I have weighed the components, the two composite legs (supplied by CZAW but look the same as the ACS) weighed total of 5.13 kg with the steel gear chambers (6B11-5CZ) and the fuselage mounts (6B11-14CZ) weighing a further 2.72kg.  

   

So the grand total is 7.85kg or 17.31lb.  

   

The CZAW plans show purpose made steel axles similar to the Grove 5012, I would prefer to use the Grove Wheels set up but this would mean cutting away the composite which I’m not keen on doing, so will probably go with the purpose made CZAW axle units.  The two axles would come out at about 2kg or 4.4lb total.  

   

There is some deepening of the gear channel 6B5-5 and its thickness goes from .032” to .040” but this would not give much extra weight.  Sundry nuts bolts and washers not included in above as they will be very similar to aluminium gear fittings.  

   

Hope this of interest.  

   

Malcolm Hunt  

CH601XL Plans builder in England  

   

   

***************************************************************************************************************  

The content of this email (and any attachment) is confidential. It may also be legally privileged or otherwise protected from disclosure.  

   

This email should not be used by anyone who is not an original intended recipient, nor may it be copied or disclosed to anyone who is   

not an original intended recipient. If you have received this email by mistake please notify us by emailing the sender, and then   

delete the email and any copies from your system.  

   

Liability cannot be accepted for statements made which are clearly the senders own and not made on behalf of Network Rail.  

***************************************************************************************************************  

   

Your attention is drawn to the fact that this email originated from a source external to Network Rail.   

   

*************************************************************************************************************** 

The content of this email (and any attachment) is confidential. It may also be legally privileged or otherwise protected from disclosure. 

 

  

This email should not be used by anyone who is not an original intended recipient, nor may it be copied or disclosed to anyone who is  

not an original intended recipient. If you have received this email by mistake please notify us by emailing the sender, and then  

delete the email and any copies from your system. 

 

  

Liability cannot be accepted for statements made which are clearly the senders own and not made on behalf of Network Rail. 

***************************************************************************************************************

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