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!


Log in

I forgot my password

Search
 
 

Display results as :
 


Rechercher Advanced Search

Cox Engine of The Month
September-2017
Kim's

"Cox Conquest gets a Run-Up."



PAST WINNERS
CEF Traveling Engine

Tach Race 2017 Updates
Ready for Tach Race 2017?
Profile Scale Reed Speed
Gallery


Win This Engine!
The Traveling Prop
World of Aviation

PeeWee .020 Repair Tips Needed

View previous topic View next topic Go down

PeeWee .020 Repair Tips Needed

Post  NEW222 on Sat Dec 10, 2016 12:08 am

Hi all. I have come into posession of a very well used and abused PeeWee .020. She was ridden very hard, and put away very wet. Anyways, I would like to ask if anybody here would happen to know of a way to repair the backplate to usable condition. Three mounting holes are completely missing and the fourth is there but cracked. Anyways, if you may have any ideas, I would love to hear them. The best I have come up with so far, is gluing it to whatever I mounted it to. BUT, I would also like to find something so I can bench run it. I can't wait to hear this little thing run. Thank you.


avatar
NEW222
Platinum Member
Platinum Member

Posts : 1049
Join date : 2011-08-13
Age : 39
Location : oakbank, mb

View user profile

Back to top Go down

Re: PeeWee .020 Repair Tips Needed

Post  NEW222 on Sat Dec 10, 2016 12:10 am

I forgot to add that it looks like the previous owner had mounted it somehow, or attempted to, as it appears that whatever used had been scraped away. Visible on picture 1.
avatar
NEW222
Platinum Member
Platinum Member

Posts : 1049
Join date : 2011-08-13
Age : 39
Location : oakbank, mb

View user profile

Back to top Go down

Re: PeeWee .020 Repair Tips Needed

Post  chevyiron420 on Sat Dec 10, 2016 12:17 am

Maybe you could bolt a piece of metal to the back with longer tank screws and then drill with what ever pattern you want on the plate.
avatar
chevyiron420
Gold Member
Gold Member

Posts : 133
Join date : 2015-01-28
Age : 59
Location : Barney Georgia

View user profile

Back to top Go down

Re: PeeWee .020 Repair Tips Needed

Post  1/2A Nut on Sat Dec 10, 2016 3:52 am

Yes that the best fix method. Small Cox Logo

avatar
1/2A Nut
Platinum Member
Platinum Member

Posts : 1126
Join date : 2013-10-20
Age : 54
Location : Texas

View user profile

Back to top Go down

Re: PeeWee .020 Repair Tips Needed

Post  MauricioB on Sat Dec 10, 2016 8:21 am

NEW222 wrote:Hi all. I have come into posession of a very well used and abused PeeWee .020. She was ridden very hard, and put away very wet. Anyways, I would like to ask if anybody here would happen to know of a way to repair the backplate to usable condition. Three mounting holes are completely missing and the fourth is there but cracked. Anyways, if you may have any ideas, I would love to hear them. The best I have come up with so far, is gluing it to whatever I mounted it to. BUT, I would also like to find something so I can bench run it. I can't wait to hear this little thing run. Thank you.




Hi, how are you ?! Look, I give you an idea that works.
Take a tower of a servant, here we call it cam or servant star, control the one that best suits your engine.
With the 4 own screws of the motor, you will hold the star, you have to keep in mind that the screws necessarily have to be longer, just add the thickness of the star.
Between the tank cover and the star, for each screw you have to match an o-ring, in order to avoid the fuel escaping, or you can drill the tank and place a hose with an additional tank of the latter Shape You do not need to place the O'ring. Do you get me?







avatar
MauricioB
Platinum Member
Platinum Member

Posts : 836
Join date : 2016-02-16
Age : 46

View user profile

Back to top Go down

Re: PeeWee .020 Repair Tips Needed

Post  NEW222 on Sat Dec 10, 2016 8:28 am

Awesome. Thank you for the tips.
And MauricioB, yes it is clear. I am glad you mentioned it about the o-rings as I did not think of fuel loss. The hole in the tank would also work, just that I have been looking for one of these for a long time and want to TRY to keep it as original as possible. Thank you.
avatar
NEW222
Platinum Member
Platinum Member

Posts : 1049
Join date : 2011-08-13
Age : 39
Location : oakbank, mb

View user profile

Back to top Go down

Re: PeeWee .020 Repair Tips Needed

Post  KariFS on Sat Dec 10, 2016 8:29 am

Mauricio, you are a Genius Hand Shake

Very nice and easy way to fix the situation.
avatar
KariFS
Platinum Member
Platinum Member

Posts : 1096
Join date : 2014-10-10
Age : 45
Location : Finland

View user profile

Back to top Go down

Re: PeeWee .020 Repair Tips Needed

Post  MauricioB on Sat Dec 10, 2016 8:35 am

NEW222 wrote:Awesome. Thank you for the tips.
And MauricioB, yes it is clear. I am glad you mentioned it about the o-rings as I did not think of fuel loss. The hole in the tank would also work, just that I have been looking for one of these for a long time and want to TRY to keep it as original as possible. Thank you.

I'm glad the idea is useful. Keep in mind that it is important that you do not lose fuel, for that reason it is necessary and priority that the whole assembly be well sealed. Also, the connection between the engine housing and the tank, if it is not properly sealed, can draw in additional air and the engine will not operate properly.
I will be attentive to your advances with this engine, a cordial greetings! Thumbs Up
avatar
MauricioB
Platinum Member
Platinum Member

Posts : 836
Join date : 2016-02-16
Age : 46

View user profile

Back to top Go down

Re: PeeWee .020 Repair Tips Needed

Post  MauricioB on Sat Dec 10, 2016 8:38 am

KariFS wrote:Mauricio, you are a Genius Hand Shake

Very nice and easy way to fix the situation.

Thanks Kari, it's a pleasure for me to share ideas with all of you! Beer Cheers
avatar
MauricioB
Platinum Member
Platinum Member

Posts : 836
Join date : 2016-02-16
Age : 46

View user profile

Back to top Go down

Re: PeeWee .020 Repair Tips Needed

Post  fredvon4 on Sat Dec 10, 2016 10:19 am

I think one obvious answer is to find one or more parts lots on E-bay that include one or more peeWee 20s (hopefully) with good metal back plates

Decades ago, on the island of Formosa (Taiwan) anything from the States was 6 to 12 weeks away

I crashed my .049 Cox model and broke off two of the 4 ears

My Dad traced the outline of the Back plate on a small piece of Teak and carefully carved out the shape a tad oversized

He made 4 ears for the screw holes out of steel wire

WE filed off (no Dremel then) all the cast ears and cleaned up the perimeter from the filler- NVA- vent tube all around the metal back plate

He then set each of the steel wire new ears in the MOLD with small screws loosely

Then we cleaned the back plate with moms nail polish remover...mostly acetone

The Back plate was set in the MOLD and the wire formed ears were jiggered into position

Dad had the two part J&B weld tubes and mixed up a batch

The rest should be obvious

Teak is oily wood so it all came out 24 hours later looking sort of funky.... if you do this in some other hard wood a slathering of car wax will work as MOLD release

He set me to work with small jewelers files and once done it looked very much like original albeit a tad larger outside dimension

I flew and crashed that .049 a lot and never broke off another mounting ear




avatar
fredvon4
Diamond Member
Diamond Member

Trusted Seller
Posts : 2092
Join date : 2011-08-26
Age : 62
Location : Lampasas Texas

View user profile

Back to top Go down

Re: PeeWee .020 Repair Tips Needed

Post  NEW222 on Sat Dec 10, 2016 10:54 am

I was wondering on using JB Weld to make 'ears'. That was the first thing I was going to try, but the tip of fabricating a thin metal backplate came to play. I will be attempting a repair of some kind this coming week. I will post pictures as I go along with it. Thank you as well for the tip, as it would appear to be stronger with a wire insert than just JB Weld alone.
avatar
NEW222
Platinum Member
Platinum Member

Posts : 1049
Join date : 2011-08-13
Age : 39
Location : oakbank, mb

View user profile

Back to top Go down

Re: PeeWee .020 Repair Tips Needed

Post  roddie on Sat Dec 10, 2016 3:22 pm

You might try tracing the back-plate onto a sheet of the butyl rubber used for tire inner-tubes (bicycle-type) as a gasket/seal between a mounting-plate.

This is a Bee backplate that I used for an example. I used an awl through the backplate over a pinewood-block to pierce the four holes in the rubber. A small nail would also work.



Naturally, the screws would pass-through the retro-fit mount-plate first.. and then through the rubber gasket.




What do you think? It took 10 min. to make. A mounting-plate would best be made of .060"/.080" thick aluminum.. and could be around the size/footprint of a Bee backplate. You could use a Bee backplate as a template to mark the outer-holes.. and the Pee Wee backplate for the inner ones. You'd then have a Pee Wee that you could mount on a model with its' firewall drilled for a Bee. Might bee useful if you've got a small airplane that's nose-heavy or over-powered with a Bee. Just swap-in the Pee Wee.. and use a shorter set of lines!
avatar
roddie
Top Poster
Top Poster

Posts : 5151
Join date : 2013-07-17
Age : 57
Location : N. Smithfield, Rhode Island

View user profile http://www.stilburnin.com

Back to top Go down

Re: PeeWee .020 Repair Tips Needed

Post  Sponsored content


Sponsored content


Back to top Go down

View previous topic View next topic Back to top

- Similar topics

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