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

Logged in members see NO ADVERTISEMENTS!


Engine mount Cox_ba12




Engine mount Pixel

Log in

I forgot my password

Search
 
 

Display results as :
 


Rechercher Advanced Search

Latest topics
» Tired of it all…
by Ken Cook Today at 8:04 am

» PT-19 Mayhem at Buder Park...a Decade Ago!!!!
by Kim Today at 7:41 am

» Project Cox .049 r/c & Citabrian Champion
by getback Today at 6:46 am

» Roddie's flat-bottomed boat..
by getback Today at 6:17 am

» Three -- sold out (making two more) Cox .010 Carburetors with wrench
by balogh Today at 12:34 am

» Joe Wagners Sioux
by GallopingGhostler Yesterday at 9:03 pm

» Happy Anzac Day!
by GallopingGhostler Yesterday at 4:16 pm

» Jim Walkers FireBee - This is going to be fun
by rsv1cox Yesterday at 12:27 pm

» Revivng Some Childhood Classics
by getback Yesterday at 7:31 am

» Fox .35 Modifications
by Ken Cook Yesterday at 3:16 am

» Introducing our Cox .049 TD Engines
by getback Fri Apr 26, 2024 6:20 am

» Cox powered jet-pump for model Sprint Boat
by roddie Thu Apr 25, 2024 10:25 pm

Cox Engine of The Month
April-2024
OVERLORD's

"Kress ducted fan with new Cox Conquest 15 RC"



PAST WINNERS
CEF Traveling Engine

Win This Engine!
Gallery


Engine mount Empty
Live on Patrol


Engine mount

Go down

Engine mount Empty Engine mount

Post  OhBee Thu Dec 17, 2020 12:09 pm

That was close!....gonna be Ok?...Engine mount 20201213
OhBee
OhBee
Platinum Member
Platinum Member

Posts : 698
Join date : 2016-03-23
Age : 73
Location : Minnesota

Back to top Go down

Engine mount Empty Re: Engine mount

Post  balogh Thu Dec 17, 2020 12:31 pm

If the crankcase fits well in its bed then the lateral forces acting on the mounting beam will not be critical even if there is only little meat left between the bolt and the bed, IMHO
balogh
balogh
Top Poster
Top Poster

2022 Supporter

2023 Supporter

Posts : 4747
Join date : 2011-11-06
Age : 65
Location : Budapest Hungary

Back to top Go down

Engine mount Empty Re: Engine mount

Post  OhBee Thu Dec 17, 2020 12:54 pm

There is some space between the engine and the beams. Was thinking about a couple of thin hardwood strips epoxied in to take up the space?Engine mount 20201214
OhBee
OhBee
Platinum Member
Platinum Member

Posts : 698
Join date : 2016-03-23
Age : 73
Location : Minnesota

Back to top Go down

Engine mount Empty Re: Engine mount

Post  balogh Thu Dec 17, 2020 1:43 pm

That would definitely help relieve the lateral load on the bolts..
balogh
balogh
Top Poster
Top Poster

2022 Supporter

2023 Supporter

Posts : 4747
Join date : 2011-11-06
Age : 65
Location : Budapest Hungary

Back to top Go down

Engine mount Empty Re: Engine mount

Post  Ken Cook Thu Dec 17, 2020 2:45 pm

You have sufficient material to hold the bolts. I would use blind nuts opposed to using nuts. Rough em up and epoxy them into the nose. The holes are drilled. Anything after those holes is meaningless. In fact I've found engines that are fit tight into the opening have a tendency to cause unwanted vibrations requiring the bearers and doublers needing to be cut back. Due to the fact that your mounting a TD profile, adding a 3/32" or 1/8" shim of aluminum under your engine lug would also offer a larger footprint not too mention it will assist in making your tank work correctly.
Ken Cook
Ken Cook
Top Poster
Top Poster

Posts : 5455
Join date : 2012-03-27
Location : pennsylvania

Back to top Go down

Engine mount Empty Re: Engine mount

Post  OhBee Thu Dec 17, 2020 2:55 pm

There's really not enough meat there for blind nuts!.....ya ..the fuel tank is another conundrum. 3/8 oz big enough for 2-3 mn. with a TD?...Its all I got.


Last edited by OhBee on Thu Dec 17, 2020 3:03 pm; edited 1 time in total
OhBee
OhBee
Platinum Member
Platinum Member

Posts : 698
Join date : 2016-03-23
Age : 73
Location : Minnesota

Back to top Go down

Engine mount Empty Re: Engine mount

Post  dirk gently Thu Dec 17, 2020 2:57 pm

OhBee wrote:There is some space between the engine and the beams. Was thinking about a couple of thin hardwood strips epoxied in to take up the space

I would do it, if only to just not have to think about it.
dirk gently
dirk gently
Gold Member
Gold Member

Posts : 429
Join date : 2012-02-03
Age : 41
Location : Poznań

Back to top Go down

Engine mount Empty Re: Engine mount

Post  OhBee Thu Dec 17, 2020 3:05 pm

I see "wallhanger" in it's future!
OhBee
OhBee
Platinum Member
Platinum Member

Posts : 698
Join date : 2016-03-23
Age : 73
Location : Minnesota

Back to top Go down

Engine mount Empty Re: Engine mount

Post  balogh Thu Dec 17, 2020 3:07 pm

C'mon OB I want to see this fly..you do not hang a crispy TeeDee049 on the wall.. Very Happy
balogh
balogh
Top Poster
Top Poster

2022 Supporter

2023 Supporter

Posts : 4747
Join date : 2011-11-06
Age : 65
Location : Budapest Hungary

Back to top Go down

Engine mount Empty ?

Post  OhBee Thu Dec 17, 2020 3:09 pm

Engine mount 20201215
OhBee
OhBee
Platinum Member
Platinum Member

Posts : 698
Join date : 2016-03-23
Age : 73
Location : Minnesota

Back to top Go down

Engine mount Empty Re: Engine mount

Post  OhBee Thu Dec 17, 2020 3:14 pm

[quote="balogh"]C'mon OB I want to see this fly..you do not hang a crispy TeeDee049 on the wall.. Very Happy [/quote
 Well,thats better than in a box  ! ...Isn't it?    For a "simple" kit,  this whole thing has been a pain!  Making do with what I can scrounge is getting tiresome. Not to mention the long lost skill set.
OhBee
OhBee
Platinum Member
Platinum Member

Posts : 698
Join date : 2016-03-23
Age : 73
Location : Minnesota

Back to top Go down

Engine mount Empty Re: Engine mount

Post  rsv1cox Thu Dec 17, 2020 5:15 pm

Shim it a little large both sides, sand/file down carefully to fit. Epoxy in. Touch up with your paint which looks very good. What is it?

Good luck.

Bob
rsv1cox
rsv1cox
Top Poster
Top Poster

2022 Supporter

2023 Supporter

2024 Supporter

Posts : 10557
Join date : 2014-08-18
Location : West Virginia

Back to top Go down

Engine mount Empty Re: Engine mount

Post  OhBee Thu Dec 17, 2020 5:37 pm

Bob...the paint is Rustoleum ultracover...Key Lime. Over a white primer..topped wth 2 coats of Krylon satin polyurethane. At least this time everything was compatible! Unlike the fiasco I had painting the Wido Satan.

OhBee
OhBee
Platinum Member
Platinum Member

Posts : 698
Join date : 2016-03-23
Age : 73
Location : Minnesota

Back to top Go down

Engine mount Empty Re: Engine mount

Post  fredvon4 Fri Dec 18, 2020 10:03 am

re read Ken Cooks advice then re read it again....

There is plenty of meat for the small nut plates...more than 80% will be backed to wood...the dinky part in open air can be ignored or filed flush

The opening NOT touching the sides of the crankcase under the mounting lugs is irrelevant and preferable so you can float the engine while establishing up or down thrust

Use two steel, aluminum, or plastic 3/32" or 1/8" shim plates under each lug. This will move the engine out board a bit to better be in line with fuel tank center....these shims can be flat or slight angle to give in/out thrust...home made or Brodak/ Lee Machine shop

fredvon4
fredvon4
Top Poster
Top Poster

2022 Supporter

Posts : 4001
Join date : 2011-08-26
Age : 68
Location : Lampasas Texas

Back to top Go down

Engine mount Empty Re: Engine mount

Post  OhBee Fri Dec 18, 2020 6:35 pm

Hey Fred!...thanks for the tips!.....recognize that engine?
OhBee
OhBee
Platinum Member
Platinum Member

Posts : 698
Join date : 2016-03-23
Age : 73
Location : Minnesota

Back to top Go down

Engine mount Empty Re: Engine mount

Post  getback Sat Dec 19, 2020 7:07 am

What Fred said ^^ Christmas Tree
getback
getback
Top Poster
Top Poster

2022 Supporter

2023 Supporter

Posts : 10119
Join date : 2013-01-18
Age : 66
Location : julian , NC

Back to top Go down

Engine mount Empty Re: Engine mount

Post  fredvon4 Sat Dec 19, 2020 10:47 am

Yes I do...sort of looks like the bottom of one of the many TeeDee engines I sent around the world to folks

I too want to see this plane twist you around until you wonder if it is EVER gonna run out of fuel

The giggle and grin is worth the pain of making it AND flying it
fredvon4
fredvon4
Top Poster
Top Poster

2022 Supporter

Posts : 4001
Join date : 2011-08-26
Age : 68
Location : Lampasas Texas

Back to top Go down

Engine mount Empty Re: Engine mount

Post  OhBee Sat Dec 19, 2020 11:18 am

Fred...what size fuel tank will run this 2-3 min?...I doubt I could spin around much longer than that!
OhBee
OhBee
Platinum Member
Platinum Member

Posts : 698
Join date : 2016-03-23
Age : 73
Location : Minnesota

Back to top Go down

Engine mount Empty Re: Engine mount

Post  Sponsored content


Sponsored content


Back to top Go down

Back to top

- Similar topics

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