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

Logged in members see NO ADVERTISEMENTS!


S1 Ringmaster - Page 4 Cox_ba12




S1 Ringmaster - Page 4 Pixel

Log in

I forgot my password

Search
 
 

Display results as :
 


Rechercher Advanced Search

Latest topics
» ebay Beechcraft Staggerwing project arrives today
by GallopingGhostler Today at 10:53 pm

» Testers Sprite engine swap
by Mark Boesen Today at 8:14 pm

» Super Bee 049
by Mark Boesen Today at 8:06 pm

» Like potato chips, you can't stop at just one.......or a dozen or two.
by rsv1cox Today at 7:13 pm

» A song by Roddie
by akjgardner Today at 6:36 pm

» Atlantikwall buildings
by rsv1cox Today at 5:12 pm

» À cool mini v twin Harley-Davidson Knucklehead
by davidll1984 Today at 2:49 pm

» What can you tell me about these models?
by GallopingGhostler Today at 12:20 pm

» Cox planes CG
by GallopingGhostler Today at 12:15 pm

» Unusual Wen Mac model - "Rare" yada yada
by Mark Boesen Yesterday at 10:42 pm

» a cheap sport muffler
by roddie Yesterday at 7:48 pm

» Scientific F-51 Mustang
by stuntflyr Yesterday at 6:33 pm

Cox Engine of The Month
February-2024
1/2A Nut's

"RC Speed Boat Power Drive TD .020"

More info on this engine!




PAST WINNERS
CEF Traveling Engine

Win This Engine!
Gallery


S1 Ringmaster - Page 4 Empty
Live on Patrol


S1 Ringmaster

Page 4 of 4 Previous  1, 2, 3, 4

Go down

S1 Ringmaster - Page 4 Empty Re: S1 Ringmaster

Post  Onelife Fri Oct 13, 2023 8:55 pm

I am waiting on hinges I have the strong paper ones but they always come back to flat when tension is gone so I will use the plastic Dubro ones.
Thanks Ken no wooden horn.
Onelife
Onelife
Gold Member
Gold Member

Posts : 153
Join date : 2022-09-20

Back to top Go down

S1 Ringmaster - Page 4 Empty Re: S1 Ringmaster

Post  Ken Cook Sun Oct 15, 2023 7:10 am

Just a heads up when one uses pin hinges such as Dubro's offerings. You must individually check each hinge by moving it and insure that there's no clicking. Flash forms on the barrel which causes the hinge to momentarily bind for a second. One needs to trim all flash off of both side of the hinge barrels with a sharp #11 blade. Once that part is done, I use a carbide file and I totally rough up the entire hinge leaf on all four sides. The rougher the better. I even go as far to drill additional holes in the leafs. At this point, I use a fairly viscous oil which I apply with a Q-tip. It usually wicks immediately into the barrel. It does however get onto the barrels and leafs. I then use acetone and a acid brush to clean the leafs thoroughly and put them aside until use. The oil will remain in the barrels thus not allowing the epoxy to get into them and hinder there movement.

Once the hinge slots are cut and test fitted, insure that all leafs are parallel and inline. I made a tool with a dowel and 1/64" ply which looks like a tiny spatula. This fits the hinge slots perfectly. I mix up 30 min epoxy and apply the epoxy into the slots with the spatula tool. DON"T glue the hinge and slide it in, this will force epoxy into the barrels. Once the epoxy is in the slots, take a heat gun and heat the epoxy aiming it at the elevator slots. This will thin the epoxy which will soak into the wood further. Apply a bit more epoxy with the spatula and clean any residual epoxy off of the outside of the elevator. Don't install the elevator to the stab or vice versa. DO ONE SIDE at a time. You can take a straight edge on the bench and lay all the hinge leafs flat and insure all of them are at right angles and are sticking out the same amount. This is critical to a bind free installation. I've gone as far as to remove the pin and use a long piece of music wire slipped through all of them to align properly. I do this with flaps usually. Once dry, insure movement is okay and proceed to installing into the other side.
Ken Cook
Ken Cook
Top Poster
Top Poster

Posts : 5381
Join date : 2012-03-27
Location : pennsylvania

Back to top Go down

S1 Ringmaster - Page 4 Empty Re: S1 Ringmaster

Post  Onelife Sun Oct 15, 2023 8:42 am

Thanks for the tips. I always have problems with installing them. I use a thicker balsa for the tail sections I usually glue a piece of 1/16 to the balsa that the kit came with. I never invested in the tool Dubro has for making slits
Onelife
Onelife
Gold Member
Gold Member

Posts : 153
Join date : 2022-09-20

Back to top Go down

S1 Ringmaster - Page 4 Empty Re: S1 Ringmaster

Post  Onelife Thu Oct 19, 2023 2:59 pm

S1 Ringmaster - Page 4 42879c10
S1 Ringmaster - Page 4 0d304310
S1 Ringmaster - Page 4 A1c39e10
Onelife
Onelife
Gold Member
Gold Member

Posts : 153
Join date : 2022-09-20

Back to top Go down

S1 Ringmaster - Page 4 Empty Re: S1 Ringmaster

Post  Onelife Thu Oct 19, 2023 3:01 pm

S1 Ringmaster - Page 4 3a333c10
S1 Ringmaster - Page 4 8b666010

I also extended the motor mounts

Nothing a few coats of dope won’t fix
Onelife
Onelife
Gold Member
Gold Member

Posts : 153
Join date : 2022-09-20

Back to top Go down

S1 Ringmaster - Page 4 Empty Re: S1 Ringmaster

Post  Ken Cook Sun Oct 22, 2023 6:43 am

Is your intent to leave that Perfect bellcrank in there with stranded wire? That can lead to a  immediate failure. Having the infill between the center ribs though is extremely important and it's good to see that practice being put to place. In addition, I would highly recommend a additional ply platform up on top to support the bellcrank bolt. I'm well aware of the fact that thousands were built like this.  Single bellcrank platforms are somewhat discouraged. In time, this can fail pull testing and it really is just a matter of when it decides to let go. It only takes the plane once to get loose across the circle while your holding the handle. The jerk will debone the entire inboard wing panel if it lets go. You just don't see enough Buster's. They're actually in my opinion the best of the bunch. Most choose the others for racing due to the sleeker wing. I found the Buster to be equally as fast. My flying partner had a Brodak POS version which flew well but it wasn't the same. It met it's demise when flying three up one day and he didn't pass the other flyer properly and got into a line tangle. The new design obliterated itself at 5' off of the ground. It doesn't say much for the durability of the new design. A original Goldberg kit is pretty much like a tank.
Ken Cook
Ken Cook
Top Poster
Top Poster

Posts : 5381
Join date : 2012-03-27
Location : pennsylvania

Back to top Go down

S1 Ringmaster - Page 4 Empty Re: S1 Ringmaster

Post  Onelife Sun Oct 22, 2023 9:33 am

S1 Ringmaster - Page 4 Image35
I don’t like the ideal of the wire rubbing on the bellcrank either or should I say sawing but I don’t have another, but I will look for one on eBay thanks. And as far as another platform above it are you suggesting a floating bellcrank?
I think the buster is so much like the shoestring
Can you refer me to a good bellcrank please?
I added some bracing between the spars
Onelife
Onelife
Gold Member
Gold Member

Posts : 153
Join date : 2022-09-20

Back to top Go down

S1 Ringmaster - Page 4 Empty Re: S1 Ringmaster

Post  Onelife Sun Oct 22, 2023 9:42 am

S1 Ringmaster - Page 4 Image36

The plans show a 1/4 square scrap brace to help secure bellcrank

I do not care for the new kits by brodak.
Never seen using a kite spar for a leading edge
Onelife
Onelife
Gold Member
Gold Member

Posts : 153
Join date : 2022-09-20

Back to top Go down

S1 Ringmaster - Page 4 Empty Re: S1 Ringmaster

Post  Onelife Sun Oct 22, 2023 11:41 am

Brodak has the nylon ones but I don’t feel like spending shipping fees. I have some eyelets maybe I could use as a bushing
Onelife
Onelife
Gold Member
Gold Member

Posts : 153
Join date : 2022-09-20

Back to top Go down

S1 Ringmaster - Page 4 Empty Re: S1 Ringmaster

Post  Ken Cook Mon Oct 23, 2023 3:14 pm

Sig and Brodak are what I prefer for stranded lines. For strength, I use the old Fox aluminum bellcranks. I can't use the nylon on some of my planes because they flex too much. Sig bellcranks used to be 100% bulletproof. The last few I've been using flex quite badly when I've pull tested them. My Nemesis for example was going to get one of my Fox MK Combat Specials, that was until I did a pull test on it. I used a .Fox .36X because I didn't want to run into problems. I have Sig bellcranks from the 80's which are noticeably stronger then the current versions I have. Sig bellcranks are good but large and can take up a bit more room over the Brodak. Both Sig and Brodak offer terrific results though.
Ken Cook
Ken Cook
Top Poster
Top Poster

Posts : 5381
Join date : 2012-03-27
Location : pennsylvania

Back to top Go down

S1 Ringmaster - Page 4 Empty Re: S1 Ringmaster

Post  Onelife Mon Oct 23, 2023 3:53 pm

https://brodak.com/027-x-6-ft-2-line-125-leadout-wire-kit.html
https://brodak.com/brodak-3.html
Sig is out of a lot of things so I will bit the bullet and pay shipping will these work ?
Onelife
Onelife
Gold Member
Gold Member

Posts : 153
Join date : 2022-09-20

Back to top Go down

S1 Ringmaster - Page 4 Empty Re: S1 Ringmaster

Post  Ken Cook Mon Oct 23, 2023 5:03 pm

MBS Model Supply offers a lot more wire for a lot less.  Melvin is a stand up guy and you can buy a lot of eyelets, crimps and large spools of wire for a lot less then Brodak. Brodak also sells Sig bellcranks and Sig still shows them in stock. I don't know how you purchase from Brodak. Generally the shipping on the website is more compared to calling them and placing a order.

https://mbsmodelsupply.com/ MBS has control horns and bellcranks as well in bulk
Ken Cook
Ken Cook
Top Poster
Top Poster

Posts : 5381
Join date : 2012-03-27
Location : pennsylvania

Back to top Go down

S1 Ringmaster - Page 4 Empty Re: S1 Ringmaster

Post  rsv1cox Mon Oct 23, 2023 6:38 pm

For drill rod and music wire I buy these assortments.

https://www.ebay.com/itm/165030431017

S1 Ringmaster - Page 4 Drill_10

Handy sizes for lead-out wire and landing gear. Price has increased since my last purchase. But, I miss my local hobby shops. I used to go in and buy the diameter that I needed in 3 foot lengths without having to buy some I would never use.
rsv1cox
rsv1cox
Top Poster
Top Poster

2022 Supporter

2023 Supporter

Posts : 10328
Join date : 2014-08-18
Location : West Virginia

Back to top Go down

S1 Ringmaster - Page 4 Empty Re: S1 Ringmaster

Post  Onelife Sat Oct 28, 2023 10:56 am

S1 Ringmaster - Page 4 A1c04b10

I stole from Peter to pay paul

S1 Ringmaster - Page 4 828b4a10

This BC came with a kit from vintage Proformance
I am pleased with his kits. He goes 100% to make sure your satisfied. Don’t get me wrong I only bought 2 kits from VP but I am please with both
Onelife
Onelife
Gold Member
Gold Member

Posts : 153
Join date : 2022-09-20

Back to top Go down

S1 Ringmaster - Page 4 Empty Re: S1 Ringmaster

Post  Onelife Thu Feb 08, 2024 1:33 pm

S1 Ringmaster - Page 4 Image38
S1 Ringmaster - Page 4 Image38
S1 Ringmaster - Page 4 6d38cb10
S1 Ringmaster - Page 4 08d2bc10
S1 Ringmaster - Page 4 80692710
S1 Ringmaster - Page 4 A2d9d010
S1 Ringmaster - Page 4 20316110

Moving kind of slow. Now the fun part. I plan on using a fiber rod ( broke arrow) bolt with head cut off and the pushrod from wing to attach elevator. I want to reinforce elevator with fiberglass and epoxy but have no fiberglass. I have silk I might try in its place.
Onelife
Onelife
Gold Member
Gold Member

Posts : 153
Join date : 2022-09-20

Back to top Go down

S1 Ringmaster - Page 4 Empty Re: S1 Ringmaster

Post  Sponsored content


Sponsored content


Back to top Go down

Page 4 of 4 Previous  1, 2, 3, 4

Back to top

- Similar topics

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