Cox Engines Forum
You are not logged in! Please login or register.

Logged in members see NO ADVERTISEMENTS!


Sig Akromaster build. - Page 3 Cox_ba12




Sig Akromaster build. - Page 3 Pixel

Log in

I forgot my password

Search
 
 

Display results as :
 


Rechercher Advanced Search

Latest topics
» K&B Sea Fury outboard engine, casting and box repair
by Gab Today at 6:15 pm

» Cox NaBOO - Just in time for Halloween
by rsv1cox Today at 6:09 pm

» My N-1R build log
by roddie Today at 5:47 pm

» COX .020 POWERED SPEEDSTER
by TD ABUSER Today at 1:33 pm

» The Three Stooges
by 1975 control line guy Today at 9:54 am

» Cox extra 300s
by 1975 control line guy Today at 8:26 am

» The Wood Shovel
by getback Today at 5:27 am

» music vids.. some of your favorites
by crankbndr Yesterday at 7:08 pm

» Light Bulb Ban Suspended For Another Year!
by 1975 control line guy Yesterday at 6:30 pm

» OK Cub .049
by rdw777 Yesterday at 9:06 am

» Throttle control for Cox .010 "Viking" engine.
by Gordinir8 Yesterday at 7:50 am

» The Beaver chainsaw, Cox's most interesting product
by GallopingGhostler Tue Oct 29, 2024 4:50 pm

Cox Engine of The Month
October-2024
MauricioB's

"Cox .049 Circa 1975, custom."



PAST WINNERS
CEF Traveling Engine

Win This Engine!
Gallery


Sig Akromaster build. - Page 3 Empty
Live on Patrol


Sig Akromaster build.

Page 3 of 6 Previous  1, 2, 3, 4, 5, 6  Next

Go down

Sig Akromaster build. - Page 3 Empty Re: Sig Akromaster build.

Post  RknRusty Wed Jan 15, 2014 8:46 am

Hey, you got a new club emblem, cool.

I can still see places the sandpaper doesn't hit on my project. I was thinking of weight and hoping the primer fills all of it. You've convinced me to add one more coat. I do want it glassy. I'm now remembering how much weight I saved by making a new fuse. One more coat it is. Thanks for allowing my hijackish post.

Rusty

_________________
Don't Panic!
...and never Ever think about how good you are at something...
while you're doing it!


My Hot Rock & Blues Playlist
RknRusty
RknRusty
Rest In Peace
Rest In Peace

Posts : 10869
Join date : 2011-08-10
Age : 68
Location : South Carolina, USA

Back to top Go down

Sig Akromaster build. - Page 3 Empty Re: Sig Akromaster build.

Post  JPvelo Wed Jan 15, 2014 9:06 am

Not a hijack at all. I used poly on my sons mouser and my speed planes. The third coat seems to be the "magic coat" that seals things up.

Jim
JPvelo
JPvelo
Diamond Member
Diamond Member

Posts : 1972
Join date : 2011-12-02
Age : 56
Location : Colorado

Back to top Go down

Sig Akromaster build. - Page 3 Empty Re: Sig Akromaster build.

Post  JPvelo Mon Jan 20, 2014 11:12 pm

Big progress made today. Wing epoxied into fuse and fixed flaps installed:
Sig Akromaster build. - Page 3 7WoqOeP

Somewhat sloppy but effective adjustable leadouts:
Sig Akromaster build. - Page 3 ZLOPlYN

And my high class Macanudo adjustable tip weight tube:
Sig Akromaster build. - Page 3 H3D99Bv

I'm going to fill most of the tube with foam and then use lead fishing sinkers for the actual weight.
I wish Arturo Fuente made an adjustable tip weight tube so I could use it in the Twister that is next in the build que.

Anyway, got the silkspan/poly on the tail feathers so those should have three coats by tomorrow afternoon. Hopefully cover the wing Thursday and start paint next Monday.
I need to get some fuel and break in that Fox .15.

Jim
JPvelo
JPvelo
Diamond Member
Diamond Member

Posts : 1972
Join date : 2011-12-02
Age : 56
Location : Colorado

Back to top Go down

Sig Akromaster build. - Page 3 Empty Re: Sig Akromaster build.

Post  RknRusty Tue Jan 21, 2014 12:39 am

Looks good, Jim. Are the leadouts adjustable? Looks like you can reposition them by pulling an eyelet out and plugging it into another hole. Do the rib cutouts allow for any adjustment?

I need to smoke a few cigars. Lots of cool things you can do with the tubes. Smoking 

Rusty

_________________
Don't Panic!
...and never Ever think about how good you are at something...
while you're doing it!


My Hot Rock & Blues Playlist
RknRusty
RknRusty
Rest In Peace
Rest In Peace

Posts : 10869
Join date : 2011-08-10
Age : 68
Location : South Carolina, USA

Back to top Go down

Sig Akromaster build. - Page 3 Empty Re: Sig Akromaster build.

Post  JPvelo Tue Jan 21, 2014 1:01 am

RknRusty wrote:Looks good, Jim. Are the leadouts adjustable? Looks like you can reposition them by pulling an eyelet out and plugging it into another hole. Do the rib cutouts allow for any adjustment?

I need to smoke a few cigars. Lots of cool things you can do with the tubes. Smoking 

Rusty
Yes, adjustable leadouts and the ribs allow for quite a bit of adjustment.

Jim
JPvelo
JPvelo
Diamond Member
Diamond Member

Posts : 1972
Join date : 2011-12-02
Age : 56
Location : Colorado

Back to top Go down

Sig Akromaster build. - Page 3 Empty Re: Sig Akromaster build.

Post  duke.johnson Tue Jan 21, 2014 8:42 am

You're progress looks great. I've told my boys to many times, I would like to build an Akromaster and a Twister and use the same paint scheme. I think that would be cool.
duke.johnson
duke.johnson
Diamond Member
Diamond Member

Posts : 1734
Join date : 2012-11-05
Age : 53
Location : Rochester, Washington

Back to top Go down

Sig Akromaster build. - Page 3 Empty Fox 15 in this plane

Post  706jim Tue Jan 21, 2014 10:40 am

Reading through this thread, I noticed mention of the Fox 15 as a powerplant. It was advertised as "having the same power as the motor of a washing machine" (1/4hp) which is about what it would put out. The only engine that I know that did less was the Medallion 15 at 0.17hp according some some review or other.
I bought my Fox 15 when I was 14, which means that I've had it for 50 years as of this summer. While not perfect at least it had more power than the Fox 0.09, although the 0.09 was easier to get started for a rank beginner.
Now that I think about it, the engine was pretty rugged. It survived a total faceplant when my Circus Prince augered into the ground from a wingover due to failed elevator hinges. The gas tank actually punched a through when it slid into the Fox.
Are my comments relevant to this thread? I dunno, but its fun to reminisce!
706jim
706jim
Gold Member
Gold Member

Posts : 469
Join date : 2013-11-29

Back to top Go down

Sig Akromaster build. - Page 3 Empty Re: Sig Akromaster build.

Post  JPvelo Sat Jan 25, 2014 12:00 am

Wing covered, epoxy and micro ballon fillets done. First time doing fillets so we'll see how it goes. Got this thing in the home stretch. Hobby shop ordered me some 10/24 all castor power master so I can start breaking in the fox.
Sig Akromaster build. - Page 3 VOItvBu

Jim
JPvelo
JPvelo
Diamond Member
Diamond Member

Posts : 1972
Join date : 2011-12-02
Age : 56
Location : Colorado

Back to top Go down

Sig Akromaster build. - Page 3 Empty Re: Sig Akromaster build.

Post  duke.johnson Sat Jan 25, 2014 12:44 am

JPvelo wrote:Wing covered, epoxy and micro ballon fillets done. First time doing fillets so we'll see how it goes. Got this thing in the home stretch. Hobby shop ordered me some 10/24 all castor power master so I can start breaking in the fox.
Sig Akromaster build. - Page 3 VOItvBu

Jim

Looks great Jim!
duke.johnson
duke.johnson
Diamond Member
Diamond Member

Posts : 1734
Join date : 2012-11-05
Age : 53
Location : Rochester, Washington

Back to top Go down

Sig Akromaster build. - Page 3 Empty Re: Sig Akromaster build.

Post  ian1954 Sat Jan 25, 2014 5:09 am

I like red model aeroplanes - mine would all be red if I didn't hold some discipline. My favourite (favorite) is the transparent red.

I like the transparent finish on wings and this is no exception. It shows the detail and work that went into the build.

If you've got it, flaunt it!
ian1954
ian1954
Diamond Member
Diamond Member

Posts : 2688
Join date : 2011-11-16
Age : 70
Location : England

Back to top Go down

Sig Akromaster build. - Page 3 Empty Re: Sig Akromaster build.

Post  statorvane Sat Jan 25, 2014 5:50 am

That is a really cool aircraft model. Imagine making a plane jane AG aircraft look cool. Maybe they are I just didn't know it. Anyway, really nice effort - wing looks great.

ian1954 wrote:mine would all be red if I didn't hold some discipline

I know exactly what you mean. I feel the same way. When I ordered dope for my Stuntman project I purposely avioded red to try something diferent. It's killing me....
statorvane
statorvane
Moderate Poster
Moderate Poster

Posts : 22
Join date : 2013-11-10
Location : Upstate New York

Back to top Go down

Sig Akromaster build. - Page 3 Empty Re: Sig Akromaster build.

Post  ian1954 Sat Jan 25, 2014 7:24 am

Better - I can see the ribs more clearly.

Sig Akromaster build. - Page 3 Sig_ak10
ian1954
ian1954
Diamond Member
Diamond Member

Posts : 2688
Join date : 2011-11-16
Age : 70
Location : England

Back to top Go down

Sig Akromaster build. - Page 3 Empty Re: Sig Akromaster build.

Post  JPvelo Sun Jan 26, 2014 4:36 pm

After hearing about the Akronasters tendency to be nose heavy i added a blind nut and 1/32 ply reinforcement to secure washers with a 4-40 Allen bolt.
Sig Akromaster build. - Page 3 EwwO8MC
Sig Akromaster build. - Page 3 I5cI3Zb
Plan on assembling tail feathers and spraying primer tomorrow.

Jim
JPvelo
JPvelo
Diamond Member
Diamond Member

Posts : 1972
Join date : 2011-12-02
Age : 56
Location : Colorado

Back to top Go down

Sig Akromaster build. - Page 3 Empty Re: Sig Akromaster build.

Post  RknRusty Sun Jan 26, 2014 4:58 pm

I did the same on the Shoestring and drilled a hole through the center of a stack of 7g lead weights. I ended up using 17g and it didn't make much difference. I was afraid to put more. Remember the more weight back there, the more leverage it has to snap that fuse behind the wing.
Rusty

_________________
Don't Panic!
...and never Ever think about how good you are at something...
while you're doing it!


My Hot Rock & Blues Playlist
RknRusty
RknRusty
Rest In Peace
Rest In Peace

Posts : 10869
Join date : 2011-08-10
Age : 68
Location : South Carolina, USA

Back to top Go down

Sig Akromaster build. - Page 3 Empty Re: Sig Akromaster build.

Post  JPvelo Fri Feb 07, 2014 12:10 pm

Down to final assembly on this one:
Sig Akromaster build. - Page 3 AewMIIC

Hopefully I will have my all castor fuel Monday and I can start breaking in the fox while the paint cures.
I plan to have it assembled for show and tell at the Central Arizona Control Line Club meeting Tuesday nite.

Jim
JPvelo
JPvelo
Diamond Member
Diamond Member

Posts : 1972
Join date : 2011-12-02
Age : 56
Location : Colorado

Back to top Go down

Sig Akromaster build. - Page 3 Empty Re: Sig Akromaster build.

Post  Cribbs74 Fri Feb 07, 2014 12:21 pm

Jim it looks terrific!

Hope we can see some video of it flying around.
Cribbs74
Cribbs74
Moderator

2022 Supporter

2023 Supporter

2024 Supporter

Posts : 11907
Join date : 2011-10-24
Age : 50
Location : Tuttle, OK

Back to top Go down

Sig Akromaster build. - Page 3 Empty Re: Sig Akromaster build.

Post  RknRusty Fri Feb 07, 2014 10:10 pm

I've always liked the clear red covering. If I ever build one with pretty enough bones I'll do that.
Rusty

_________________
Don't Panic!
...and never Ever think about how good you are at something...
while you're doing it!


My Hot Rock & Blues Playlist
RknRusty
RknRusty
Rest In Peace
Rest In Peace

Posts : 10869
Join date : 2011-08-10
Age : 68
Location : South Carolina, USA

Back to top Go down

Sig Akromaster build. - Page 3 Empty Re: Sig Akromaster build.

Post  JPvelo Sat Feb 15, 2014 5:49 pm

Sig Akromaster build. - Page 3 DDT4Ep8
Sig Akromaster build. - Page 3 Maq3o4a
Sig Akromaster build. - Page 3 JWTSHmH
All done except leadouts, engine thrust shims, and she's a tad bit nose heavy. Tank is a 2oz Sullivan klunk plumbed for uniflow. Followed  break in routine posted by Phil K on stunt hanger. Engine has had over a quart of power master 10/22 with extra castor run through it. Doing 11,300 just starting to break into a 2 cycle with an apc 8x5, runs about 4 1/2 minutes with 2 oz of fuel. Plan to fly next Saturday.


Jim
JPvelo
JPvelo
Diamond Member
Diamond Member

Posts : 1972
Join date : 2011-12-02
Age : 56
Location : Colorado

Back to top Go down

Sig Akromaster build. - Page 3 Empty Re: Sig Akromaster build.

Post  Cribbs74 Sat Feb 15, 2014 6:02 pm

Looks absolutely fantastic Jim!

That particular muffler is not all that heavy, but if you took it off it may even things out. If you can get away without a muffler that is.

Hope to hear about the flight report soon. With video if possible!

Ron
Cribbs74
Cribbs74
Moderator

2022 Supporter

2023 Supporter

2024 Supporter

Posts : 11907
Join date : 2011-10-24
Age : 50
Location : Tuttle, OK

Back to top Go down

Sig Akromaster build. - Page 3 Empty Re: Sig Akromaster build.

Post  RknRusty Sat Feb 15, 2014 8:19 pm

If you leave the muffler on, I highly recommend a pressure line to the tank. I put a clip on it to keep it from siphoning before I crank it. It helps keep dry grass bits out of the tank in the winter too. a problem where I fly. I like the consistency of my engine runs with exhaust pressure. I've grown very fond of those plastic clunk tanks.
Rusty

_________________
Don't Panic!
...and never Ever think about how good you are at something...
while you're doing it!


My Hot Rock & Blues Playlist
RknRusty
RknRusty
Rest In Peace
Rest In Peace

Posts : 10869
Join date : 2011-08-10
Age : 68
Location : South Carolina, USA

Back to top Go down

Sig Akromaster build. - Page 3 Empty Re: Sig Akromaster build.

Post  JPvelo Sat Feb 15, 2014 9:20 pm

Ron,
Thank you. I plan on leaving the muffler on. My club field requires mufflers on anything over a .35 but we fly in a mall parking lot so I want to try and be as best an ambassador of the hobby as possible.

Rusty,
Can I run muffler pressure with a uniflow setup?

Jim
JPvelo
JPvelo
Diamond Member
Diamond Member

Posts : 1972
Join date : 2011-12-02
Age : 56
Location : Colorado

Back to top Go down

Sig Akromaster build. - Page 3 Empty Re: Sig Akromaster build.

Post  Cribbs74 Sat Feb 15, 2014 9:35 pm

I know you asked Rusty, but I think you can. Just run pressure to the uniflow line. Better wait until Rusty comments though. I am the king of standard vent.
Cribbs74
Cribbs74
Moderator

2022 Supporter

2023 Supporter

2024 Supporter

Posts : 11907
Join date : 2011-10-24
Age : 50
Location : Tuttle, OK

Back to top Go down

Sig Akromaster build. - Page 3 Empty Re: Sig Akromaster build.

Post  RknRusty Sat Feb 15, 2014 11:07 pm

Absolutely, that's what I do. The uni pipe inside the tank ends an inch or less short of the rear outboard corner where it won't get in the way of the clunk. I put a 1" piece of plugged tube on the vent pipe that sticks straight up, and tie a string to it so you don't lose it. Remove the vent  when you fill the tank, unplug the pressure line from the muffler and fill through that. Re-cap the vent and replug the muffler line. You can route that line so it won't siphon, but I prefer to just put a clip on it. Anddon't forget to unclip it before you crank.

On the Yak  plan to use a 3 ounce oval wedge uniflow tank with the same plumbing, just not a clunk. The new Skyray will have the plastic clunk uniflow. The runs are dead steady, I launch my OS rich, not steady 2 stroking and it will switch fast and slow in the air giving 5+ second laps and 2 stroke climbs and overheads, When it's a lap or two from running dry, it will start pulling harder and I get ready to land. There is no fuel in the tank when it cuts off. Every time. I think you'll really like it. Once you get your needle set it doesn't seem to vary as much, but remember I'm also a noob at this too. Do not use a check valve in the uni line.
Rusty

_________________
Don't Panic!
...and never Ever think about how good you are at something...
while you're doing it!


My Hot Rock & Blues Playlist
RknRusty
RknRusty
Rest In Peace
Rest In Peace

Posts : 10869
Join date : 2011-08-10
Age : 68
Location : South Carolina, USA

Back to top Go down

Sig Akromaster build. - Page 3 Empty Re: Sig Akromaster build.

Post  JPvelo Sun Feb 16, 2014 12:01 am

Thanks guys,

I will post video next Saturday.
JPvelo
JPvelo
Diamond Member
Diamond Member

Posts : 1972
Join date : 2011-12-02
Age : 56
Location : Colorado

Back to top Go down

Sig Akromaster build. - Page 3 Empty Re: Sig Akromaster build.

Post  OVERLORD Sun Feb 16, 2014 1:45 am

Good looking plane, Jim. It should fly well. The lead out guides, do they just plug in into the slot-with-holes?
OVERLORD
OVERLORD
Diamond Member
Diamond Member

Posts : 1799
Join date : 2013-03-19
Age : 58
Location : Normandy, France

Back to top Go down

Sig Akromaster build. - Page 3 Empty Re: Sig Akromaster build.

Post  Sponsored content


Sponsored content


Back to top Go down

Page 3 of 6 Previous  1, 2, 3, 4, 5, 6  Next

Back to top

- Similar topics

 
Permissions in this forum:
You cannot reply to topics in this forum