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2 for one - Carden 40% Extra 300 Build

Old 01-09-2008, 09:05 PM
  #251  
DrDeath
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Default RE: 2 for one - Carden 40% Extra 300 Build

Do like I did. I placed the rubber matting down. It comes in 2x2 interlocking sections. I really need to get back in my shop soon. The sad part is that you will have finished two Cardens and I still have my Spacewalker in bones []
Old 01-10-2008, 10:45 PM
  #252  
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Default RE: 2 for one - Carden 40% Extra 300 Build

Second plane is up to speed....
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Old 01-11-2008, 01:13 PM
  #253  
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Default RE: 2 for one - Carden 40% Extra 300 Build

Looking great, Kelly!
Old 01-12-2008, 09:21 PM
  #254  
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Default RE: 2 for one - Carden 40% Extra 300 Build

Thanks Neil!

I had time to work on the engine install today. I used the left over 1"x1" hard point
mounts from the kit and milled them to 2.5 degree angle. I mounted the engine and
tack glued the ply blocks in place.

I have temporary aluminum spacers installed for the fitting. Once I have everything
checked out I plan on turning permanent aluminum spacers.

I will be using 5mm mounting bolts with locking nuts for the engine mount.

I have the cans swapped, left for right in the picture... Just an idea I had for a second.

ORIGINAL: flyme2dmoon
Looking great, Kelly!
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Old 01-12-2008, 11:06 PM
  #255  
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Default RE: 2 for one - Carden 40% Extra 300 Build

Question....

I have never set up cans before and I want to know if this looks OK
(red arrow in the last picture) or do you think I need to add extensions
to the header so it pushes the cans deeper into the pipe tunnel?

This looks great to me... No spacer blocks on the header, and no pipe
extensions!

To me it fits like a glove and I'm not talking OJ here!
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Old 01-14-2008, 10:05 PM
  #256  
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Default RE: 2 for one - Carden 40% Extra 300 Build

OK so I am going with that setup....

Here is what I cam up with for a rear mount. It is pretty tight up
front so I am thinking of supporting the front of the cans right behind
the coupler on the neck.

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Old 01-14-2008, 10:27 PM
  #257  
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Default RE: 2 for one - Carden 40% Extra 300 Build

Cans look good, Kelly.
Old 01-16-2008, 09:44 PM
  #258  
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Default RE: 2 for one - Carden 40% Extra 300 Build

After some advice about the rear can mount I made new
donuts for the can mount. These have more surface area
so the plywood won't dig into the silicone mounts.

I also framed up and built the pipe floor and front bulkhead.
The pipe floor is in 2 sections. one is removable in case I need
access to the pipe mount.

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Old 01-18-2008, 08:15 PM
  #259  
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Default RE: 2 for one - Carden 40% Extra 300 Build

This is the second night messing with the split cowl...

I glued in the 5 ply blocks for the blind nuts on one side of the cowl.

I also have scrap balsa taped around the fuse to help line up the cowl
for fitting.

I modified the lower attachment points of the cowl. It is hard to explain
but basically the lower half is screwed into blind nuts that are located inside
the fuse. Access to the lower bolts is from the bottom cutouts for the pipes.
I will be adding alignment pins each side of the lower cowl mounts.

In the last 2 pictures it looks like I will have to make a new upper cowl
support, part C1. The one supplied with the kit has a different radius and
is about 1/4 inch small on both sides.
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Old 01-18-2008, 09:02 PM
  #260  
as722
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Default RE: 2 for one - Carden 40% Extra 300 Build

Kelly,

I had the same issues with my top cowl ring. All I did was to cut the the corners flat and added a piece of balsa and cut the ring to the correct shape. I traced the front of the hatch and then cut the ring using the inside of the line to allow for the thicknes of the cowl.

Albert
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Old 01-19-2008, 09:06 PM
  #261  
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Default RE: 2 for one - Carden 40% Extra 300 Build

Thanks Albert...
Mine was so far off is was easier to just cut a new one.
I have done that and spent many hours fitting this thing again
today.

I am going down and epoxy it on tonight.
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Old 01-20-2008, 08:17 AM
  #262  
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Default RE: 2 for one - Carden 40% Extra 300 Build


Great Build Kelly, very impressive work.
Old 01-20-2008, 09:08 AM
  #263  
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Default RE: 2 for one - Carden 40% Extra 300 Build

Might be too late, but I brought my top ring all the way back to F1 and attached it with 6-32's through F1 and blind nuts in the top ring. The ring needs to be sanded slightly to get it to fit this way anyway since it is further back. The disadvantage is I have to take the top hatch off to get the cowl off.
Old 01-20-2008, 08:39 PM
  #264  
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Default RE: 2 for one - Carden 40% Extra 300 Build

RobT, yes, to late but that sounds like a simple solution that would eliminate
the L bracket.

OK so this plane is as far as I can take it without finishing and painting the inside
of the canopy area. Next thing to do is repeat the last weeks worth of work on
the other plane!

One issue I am having is the epoxy doesn't seem to want to stick to the fiberglass
real well. I have tried 2 different epoxies, both were sanded and cleaned with
alcohol before I applied the glue. I have had 2 of the plywwod pads for the cowl screw
pop off.

Right now I am planning on doing the fillets for the cowl rings with fiberglass unless
you guys have a better idea?
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Old 01-21-2008, 08:25 AM
  #265  
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Default RE: 2 for one - Carden 40% Extra 300 Build

Kelly,

I used Goop on the cowl ring and it has held up fine for the full flying season.

Are you going to cut an additional cooling exit in the cowl? You'll want one on the bottom of the cowl for the engine in addition to the one further back in the fuse for the cannisters. Here's a couple of suggestions- one red, one blue:

Dave
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Old 01-21-2008, 08:39 AM
  #266  
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Default RE: 2 for one - Carden 40% Extra 300 Build

Another vote for goop.
Old 01-22-2008, 06:15 PM
  #267  
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Default RE: 2 for one - Carden 40% Extra 300 Build

Try the aero-poxy from Bob Violet Jets. The stuff will stick to anything. You don't apply it between the parts being glued. You lay a fillet of glue along the seam. It takes about 24 hours to cure but the stuff is bullet proof. They also use it in the composit airplanes. You won't find anything better!


http://www.bvmjets.com/Pages/Catalog/aeropoxy.htm

Brent
Old 01-22-2008, 08:38 PM
  #268  
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Default RE: 2 for one - Carden 40% Extra 300 Build

Aeropoxy, $80.00 for a kit. I have some scrap fiberglass and plan on
testing fiberglass resin, goop, and some other epoxy.

It is amazing how fast it goes the second time around.
I am ready to fit the cowl next.

I also made a spot for the 40 on the rack.
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Old 01-22-2008, 08:49 PM
  #269  
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Default RE: 2 for one - Carden 40% Extra 300 Build

aeropoxy - $80.00 and you have to mail order it
Goop - $4.00 and you can buy it anywhere

Goop wins!

I've tried everything and always go back to goop, the same goes for the canopy. Maybe I'll go down for the maiden, we'll have a 300 party !. LOL

Albert
Old 01-23-2008, 12:35 PM
  #270  
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Default RE: 2 for one - Carden 40% Extra 300 Build

albert, then you can come out here for my 300 maiden!
Old 01-23-2008, 09:57 PM
  #271  
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Default RE: 2 for one - Carden 40% Extra 300 Build

Hey Bob- you got a scale scheme in mind yet?
Old 01-24-2008, 12:25 PM
  #272  
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Default RE: 2 for one - Carden 40% Extra 300 Build

i,ve bogged down now, airframe is finished.needs final sanding, but i can't make up my mind. rob said no more flags. i,ve done all the sceams i like at least once.i keep going back to a john klatt airshows air national guard extra that i,ve seen here on the east coast a few times. lots of monokote cutting again tho
Old 01-25-2008, 08:10 PM
  #273  
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Default RE: 2 for one - Carden 40% Extra 300 Build

Second cowl being glued...
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Old 01-25-2008, 08:13 PM
  #274  
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Default RE: 2 for one - Carden 40% Extra 300 Build

Sounds good to me, let's do it!

ORIGINAL: as722

Maybe I'll go down for the maiden, we'll have a 300 party !. LOL

Albert
Old 01-26-2008, 10:17 PM
  #275  
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Default RE: 2 for one - Carden 40% Extra 300 Build

I had a chance to clear the bench and let the twins do a little bonding!

I spend this evening working out the throttle and choke linkage location
and then made servo mount trays.

Maybe we should make a center wing section and build a twin 300 like the
P51 twin Mustang!

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