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

Logged in members see NO ADVERTISEMENTS!


Screws For Engines Cox_ba12




Screws For Engines Pixel

Log in

I forgot my password

Search
 
 

Display results as :
 


Rechercher Advanced Search

Latest topics
» A couple more new to me.
by batjac Today at 12:00 am

» ebay Beechcraft Staggerwing project arrives today
by GallopingGhostler Yesterday at 10:53 pm

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

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

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

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

» Atlantikwall buildings
by rsv1cox Yesterday at 5:12 pm

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

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

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

» Unusual Wen Mac model - "Rare" yada yada
by Mark Boesen Thu Feb 22, 2024 10:42 pm

» a cheap sport muffler
by roddie Thu Feb 22, 2024 7:48 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


Screws For Engines Empty
Live on Patrol


Screws For Engines

Go down

Screws For Engines Empty Screws For Engines

Post  Iceberg Wed Nov 20, 2019 7:41 pm

I have a few of the extended tank Kavan ones as seen in the picture. I know they are only average. They do work and get 10CC of fuel in the tank and they work ok. But I am looking for the screws. Some of the screws I have are too short a bit and vibrate loose unless I use lock tight. Sorry for my ignorance. What is the thread size of these old sewing machine screws? Where are the longer ones available to suit this motor adaptation? They are longer than the 8CC Silver Bee tank screws by about 3/8 +- an inch? I am not saying this is a great setup just trying to make my set sparkle with correct screws.

Thanks Much!
Ice




Screws For Engines Kavan_10
Iceberg
Iceberg
Gold Member
Gold Member

Posts : 381
Join date : 2018-11-03
Location : Suva Fiji Islands

Back to top Go down

Screws For Engines Empty Re: Screws For Engines

Post  NEW222 Wed Nov 20, 2019 7:49 pm

Screw pitch is 2-56. That much I do know. Howerer, I am sorry I cannot help you with the length.
NEW222
NEW222
Top Poster
Top Poster

Posts : 3881
Join date : 2011-08-13
Age : 45
Location : oakbank, mb

Back to top Go down

Screws For Engines Empty Screws for engine

Post  ffkiwi Thu Nov 21, 2019 3:17 pm

About your only option is microfasteners.com.....who do list 2-56 in 1-1/4 and 1-1/2 lengths......one or other of which should allow suitable trimming to the size you need. The catch (there's always a catch!) is they don't have these in filister head format...so you would have to buy socket head and perhaps deepen the backplate recesses where the screw heads go----or buy flat heads and reduce the head diameter on a lathe or using a Dremel.

ChrisM
'ffkiwi'
ffkiwi
ffkiwi
Gold Member
Gold Member

Posts : 344
Join date : 2018-07-10
Location : Wellington, NZ

Back to top Go down

Screws For Engines Empty Re: Screws For Engines

Post  Levent Suberk Thu Nov 21, 2019 3:45 pm

avatar
Levent Suberk
Diamond Member
Diamond Member

Posts : 2191
Join date : 2017-12-24
Location : Türkiye

Back to top Go down

Screws For Engines Empty Re: Screws For Engines

Post  dckrsn Thu Nov 21, 2019 4:51 pm

McMaster Carr has a large inventory of 2-56 socket head screws in
lengths up to 2 1/2", and the socket heads DO fit cox backplates.
The screws that came from Kaven are pretty poor, quality-wise, but
the McMaster Carr ones are high quality. I have bought both stainless
and black oxide. Shipping is a little steep, but having them eases the
pain.
Bob
dckrsn
dckrsn
Diamond Member
Diamond Member

Posts : 2750
Join date : 2010-10-21
Age : 71
Location : Long Island, New York

Back to top Go down

Screws For Engines Empty Re: Screws For Engines

Post  Iceberg Thu Nov 21, 2019 10:24 pm

Thanks very much Levent

Excellent link has the exact bolts needed!

Iceberg
Iceberg
Iceberg
Gold Member
Gold Member

Posts : 381
Join date : 2018-11-03
Location : Suva Fiji Islands

Back to top Go down

Screws For Engines Empty Re: Screws For Engines

Post  Iceberg Thu Nov 21, 2019 10:39 pm

One last question. Please bear with me. Is there a metric screw that can be used to fasten the tanks and not use the original 2-56 screws? Anybody know?

Thanks
Ice
Iceberg
Iceberg
Gold Member
Gold Member

Posts : 381
Join date : 2018-11-03
Location : Suva Fiji Islands

Back to top Go down

Screws For Engines Empty Re: Screws For Engines

Post  ffkiwi Thu Nov 21, 2019 11:04 pm

Not really-M2.5 x 0.45 has a virtually identical thread pitch-but is noticeably larger diameter....there are obscure metric threads such as 2.2 and 2.3 [see www.tracytools.com]....but you will scour the world trying to find screws in those sizes (M2.2x 0.45 would be a very close match to 2-56!)
You won't find any of the commonly used metric sizes M2, M2.5 M2.6 that will fit in this particular situation unless you're prepared to retap the holes to match-in which case M2.5 is an option

ChrisM
'ffkiwi'
ffkiwi
ffkiwi
Gold Member
Gold Member

Posts : 344
Join date : 2018-07-10
Location : Wellington, NZ

Back to top Go down

Screws For Engines Empty Re: Screws For Engines

Post  Iceberg Sun Nov 24, 2019 7:12 pm

Thanks Chris
Appreciate the excellent and accurate comment on the 2.2 mm screws. I guess sticking with the original size has merit.

Thank you!
Ice
Iceberg
Iceberg
Gold Member
Gold Member

Posts : 381
Join date : 2018-11-03
Location : Suva Fiji Islands

Back to top Go down

Screws For Engines Empty Re: Screws For Engines

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