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A real request not a test

 
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martin.board1950(at)googl
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PostPosted: Tue Jan 04, 2011 3:34 am    Post subject: A real request not a test Reply with quote

Do any of my UK owner/builder friends have any small amounts of composite sheet I could buy? I have bought a new Jabiru engine for my Pulsar and it is proving a little difficult to retrofit into my Jabiru bed mount - my old engine was very early and there are now numerous changes to be made. I need the composite to build a box behind the firewall to take in a new air intake system that is yet to be invented! I expect the box will be 4ins wide by 2ins deep and 10 ins long and will be coverered by a similar stainless box in the firewall itself. I know I can make some composite but with all of the other changes it is just a job too far.
 
The engine arrived just before Xmas and I have been worried about all the changes to be made - largely because of a changed induction system and larger carb.. The induction system fouls the subframe and the carb is now very close to the firewall. I have read lots about have tight bends near to the carb inlet and that is the reason for going back into the plane. It looks like my carb heat system will have to go in favour of an electic heater - I think that will simplify some of the plumbing anyhow.
I am taking the plane less wings to the welder on Thursday and I hope I will not have to cut too much away of the front cowl for access for welding - I am well away from the bearers so it will be a largely cosmetic issue to sort out when glassing bits back in. The exhaust header pipes all have to be modified as Jabiru have changed their design but luckily they have gone for stainless  this time which may mean the current pipes can be mated to the new.
The most involved issue is removing the firewall, wiring etc etc and in a cold damp hanger its a bit of a drag. I hope if I do it in small stages with lots of photos to remind me where everything goes back, everything will eventually fall into place.
 
Wish me luck
 
Martin
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lancegoddard(at)me.com
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PostPosted: Tue Jan 04, 2011 8:38 am    Post subject: A real request not a test Reply with quote

In case you should want it, a non-European source for composite materials is ACP in Livermore, CA.Composite panels, tubes, and rods for a variety of industries including medical and aerospace: ACP Composites
[url=http://www.acpsales.com/][/url]Good luck, Martin.
Lance Goddard
On Jan 4, 2011, at 3:31 AM, martin board wrote:
Quote:
Do any of my UK owner/builder friends have any small amounts of composite sheet I could buy? I have bought a new Jabiru engine for my Pulsar and it is proving a little difficult to retrofit into my Jabiru bed mount - my old engine was very early and there are now numerous changes to be made. I need the composite to build a box behind the firewall to take in a new air intake system that is yet to be invented! I expect the box will be 4ins wide by 2ins deep and 10 ins long and will be coverered by a similar stainless box in the firewall itself. I know I can make some composite but with all of the other changes it is just a job too far.

The engine arrived just before Xmas and I have been worried about all the changes to be made - largely because of a changed induction system and larger carb.. The induction system fouls the subframe and the carb is now very close to the firewall. I have read lots about have tight bends near to the carb inlet and that is the reason for going back into the plane. It looks like my carb heat system will have to go in favour of an electic heater - I think that will simplify some of the plumbing anyhow.
I am taking the plane less wings to the welder on Thursday and I hope I will not have to cut too much away of the front cowl for access for welding - I am well away from the bearers so it will be a largely cosmetic issue to sort out when glassing bits back in. The exhaust header pipes all have to be modified as Jabiru have changed their design but luckily they have gone for stainless this time which may mean the current pipes can be mated to the new.
The most involved issue is removing the firewall, wiring etc etc and in a cold damp hanger its a bit of a drag. I hope if I do it in small stages with lots of photos to remind me where everything goes back, everything will eventually fall into place.

Wish me luck

Martin
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briana(at)xtra.co.nz
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PostPosted: Tue Jan 04, 2011 10:49 am    Post subject: A real request not a test Reply with quote

Martin,

I've just made an air intake, and an electric carb heat system for the Jabiru 220o that is going in my Flitzer. Wondering if these might help. There are photos on the Jabiru Engines Yahoo group, but maybe you are not signed in there. The issue of being close to the firewall sounds similar, so there is not much room for an air intake box. The electric carb heat system, I'm hoping, will be OK for NZ conditions, especially for flying an open single seat biplane. UK conditions might require more attention to carb heat, although it is probably pretty warm under the Pulsar cowling.

I've attached a couple of photos. Can send more details if you are interested.

Brian


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martin.board1950(at)googl
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PostPosted: Fri Jan 07, 2011 7:51 am    Post subject: A real request not a test Reply with quote

Brian,
 
Sorry for the delay in coming back, Your intake looks very interesting and a similar sort of concept to what  I had fitted on my old Jab engine. It worked really well with no performance or engine o/heating issues. My new engine is much more of a problem and very close to the firewall. I have a number of ideas and the favourite - I think - is to penetrate the firewall with a stainless tube ( belled out cobra style) and to then come back out into the engine bay. By eliminating my current hot air system with the electric heater I gain some more space for an improved filter system,
 
Regards
 
Martin

On 4 January 2011 18:45, Brian Anderson <briana(at)xtra.co.nz (briana(at)xtra.co.nz)> wrote:
[quote]Martin,

I've just made an air intake, and an electric carb heat system for the Jabiru 220o that is going in my Flitzer. Wondering if these might help. There are photos on the Jabiru Engines Yahoo group, but maybe you are not signed in there.  The issue of being close to the firewall sounds similar, so there is not much room for an air intake box. The electric carb heat system, I'm hoping, will be OK for NZ conditions, especially for flying an open single seat biplane. UK conditions might require more attention to carb heat, although it is probably pretty warm under the Pulsar cowling.

I've attached a couple of photos. Can send more details if you are interested.

Brian


[b]


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