Cox Engines Forum
You are not logged in! Please login or register! Guests are limited to posting in the "General Questions (Guest Posting Allowed)" section only. Becoming a member is fast, easy and FREE!


Interior Broken Tank Lug  Babe_b10
Log in

I forgot my password

Search
 
 

Display results as :
 


Rechercher Advanced Search

Latest topics
» Happy Birthday Marleysky!
by Kim Today at 7:51 am

» DONE !!! [strike]Want to buy: A "barrel-throttle" Medallion .049[/strike]
by Kim Today at 6:45 am

» 5 x 3 propellers
by 1/2A Nut Today at 5:08 am

» Vapor Trails of days gone by!!!
by Dave P. Yesterday at 9:59 pm

» 1/2a Stealth Sport RC Plane
by NEW222 Yesterday at 9:45 pm

» 3D printed beam mount .049 backplate
by 1/2A Nut Yesterday at 9:24 pm

» Wanted 2 good front rims for my shrike
by David S Yesterday at 4:16 pm

» Prop hub nut
by jbanes1961 Mon Nov 11, 2019 10:16 pm

» Medallion 049/09 needle thread
by 944_Jim Mon Nov 11, 2019 8:33 pm

» More Engine Assembling/Testing. The second Tee Dee tank/mount arrives.
by 1/2A Nut Mon Nov 11, 2019 7:17 pm

Cox Engine of The Month
November-2019
jmcalata's

"Pee Wee .020 throttled combinated"



PAST WINNERS
CEF Traveling Engine

Win This Engine!
The Traveling Prop
Gallery


Interior Broken Tank Lug  Empty
World of Aviation

Interior Broken Tank Lug

Go down

Interior Broken Tank Lug  Empty Interior Broken Tank Lug

Post  Iceberg on Fri Jul 05, 2019 1:01 am

I got a backplate from an auction that had a cracked interior tank lug. I was trying to come up with something that might repair it. I lathed some brass inserts and opened the cracked lug to 6mm. Please see attached pictures. I hope this might work ok. I will uses numerous small washers to ensure the lug doesn't stick out proud from the backplate and have the ears break off or something silly like that.

Do others have suggestions for other methods of doing this kind of repair?

Thanks
Iceberg

Interior Broken Tank Lug  Broken14
Interior Broken Tank Lug  Broken13
Interior Broken Tank Lug  Broken12Interior Broken Tank Lug  Broken15
Iceberg
Iceberg
Gold Member
Gold Member

Posts : 142
Join date : 2018-11-03
Location : Bangkapi Thailand

Back to top Go down

Interior Broken Tank Lug  Empty Re: Interior Broken Tank Lug

Post  aspeed on Fri Jul 05, 2019 8:16 am

I have one like that too.  I was thinking along the lines of making a big 1/8" aluminum washer the same shape as the backplate and drillingout the good holes, and countersinking the bad one and doing what you did.  I have enough parts engines anyway so it doesn't need to happen any time soon.
aspeed
aspeed
Gold Member
Gold Member

Posts : 343
Join date : 2013-01-18
Location : Leamington Ont. Can.

Back to top Go down

Interior Broken Tank Lug  Empty Re: Interior Broken Tank Lug

Post  ticomareado on Fri Jul 05, 2019 8:30 am

I'd say the busted back plate would have been a good candidate for a tank drill out and plumbing for external tank. That's a lot of work you did there, but if it keeps you out of the GI hootchie cootchie dives I guess that's OK.
ticomareado
ticomareado
Platinum Member
Platinum Member

Posts : 866
Join date : 2013-10-03
Location : NC

Back to top Go down

Interior Broken Tank Lug  Empty Re: Interior Broken Tank Lug

Post  Cribbs74 on Fri Jul 05, 2019 12:27 pm

That’s a good repair, only thing I could suggest is to use some sort of sealer, JB, silicone etc. A backplate leak will never allow an engine to run right.
Cribbs74
Cribbs74
Moderator

2019 Supporter

Trusted Seller
Posts : 10554
Join date : 2011-10-24
Age : 45
Location : Tuttle, OK

Back to top Go down

Interior Broken Tank Lug  Empty Re: Interior Broken Tank Lug

Post  Admin on Fri Jul 05, 2019 12:34 pm

Nice repair! Those non-vented stunt tank backplates are not the easiest to come across these days.

_________________
-Jacob


Admin
Admin
Administrator

Posts : 5059
Join date : 2010-07-27
Location : Roseville, Minnesota

http://sites.google.com/site/coxenginecollection/

Back to top Go down

Interior Broken Tank Lug  Empty Re: Interior Broken Tank Lug

Post  Levent Suberk on Fri Jul 05, 2019 4:51 pm

A lathe is a need for modelers. Good idea.
Levent Suberk
Levent Suberk
Gold Member
Gold Member

Posts : 467
Join date : 2017-12-24
Location : Turkey

Back to top Go down

Interior Broken Tank Lug  Empty Re: Interior Broken Tank Lug

Post  KariFS on Sat Jul 06, 2019 4:49 am

Yes, a lathe would be nice to have. And a mill Smile They would have to be quite high precision to be useful for modeling.

I think one of our European members (Pegin maybe?) repaired a backplate in a way that aspeed described. Looked pretty nice and functional for a runner.
KariFS
KariFS
Diamond Member
Diamond Member

Posts : 1569
Join date : 2014-10-10
Age : 48

Back to top Go down

Interior Broken Tank Lug  Empty Re: Interior Broken Tank Lug

Post  aspeed on Sat Jul 06, 2019 1:09 pm

When I was a kid, there was a guy around my age that ran a mouse racer with a backplate mount of some sort. He clipped the ears off the backplate. Never could figure out how he mounted it. I would have tried it because we had a lathe at school. I have a couple lathes now and a Bridgeport mill copy. Life would be a bich without them. Wishing for a digital readout though.
aspeed
aspeed
Gold Member
Gold Member

Posts : 343
Join date : 2013-01-18
Location : Leamington Ont. Can.

Back to top Go down

Interior Broken Tank Lug  Empty Re: Interior Broken Tank Lug

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