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

Logged in members see NO ADVERTISEMENTS!


Cox Mercedes tech Cox_ba12




Cox Mercedes tech Pixel

Log in

I forgot my password

Search
 
 

Display results as :
 


Rechercher Advanced Search

Latest topics
» K&B Torp Jr 035 glow plug(s)
by Oldenginerod Today at 1:55 am

» Scientific Gulfhawk
by duaneh Today at 1:21 am

» Sold out Cox .049 silencers for sale
by 1/2A Nut Yesterday at 7:24 pm

» Roddie tears-down his recent bench-run engine
by davidll1984 Yesterday at 7:11 pm

» Nostalgia alert, my 1959 Corvette revisited
by rsv1cox Yesterday at 6:19 pm

» Does this book interest anyone?
by GallopingGhostler Yesterday at 6:13 pm

» Cox Ryan ST 2.0
by GallopingGhostler Yesterday at 3:47 pm

» Gut instinct
by Onelife Tue May 21, 2024 5:39 pm

» My Cox .049 reedy with a Galbreath head and Nelson plug
by F4D Phantom II Tue May 21, 2024 11:03 am

» audio-tach anyone?
by roddie Mon May 20, 2024 9:09 pm

» Jim Walkers FireBee - This is going to be fun
by rsv1cox Mon May 20, 2024 8:16 pm

» Prayers for my Wife Please
by fit90 Mon May 20, 2024 7:34 am

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

"Cox Tee Dee .051 RC Marine"



PAST WINNERS
CEF Traveling Engine

Win This Engine!
Gallery


Cox Mercedes tech Empty
Live on Patrol


Cox Mercedes tech

Go down

Cox Mercedes tech Empty Cox Mercedes tech

Post  rsv1cox Sun Jun 27, 2021 10:46 am

Low tech.

This one got by me.  Checking it yesterday I found the engine locked up.  Totally locked!

Removed the motor, applied a little heat.  Nothing, More heat, more nothing.  Dropped a little Rem oil in the open port and around the prop drive, more heat and got it to move.  Carefully rotated the flywheel back and forth until it loosed.  Took it apart.  Didn't look bad until I removed the reed after a Simple Green soak.  Haven't seen this level of green gunk under the ears in a long time.  Had to chip it out with a tooth pick.  

Cox Mercedes tech P1011113
Cox Mercedes tech P1011114
Cox Mercedes tech P1011112
Cox Mercedes tech P1011115

Now for the low tech part.

There are many ways that you can reassemble this engine, most of them wrong.  I have done it many times and still need a reference.  

You see there is this little hole in the bottom of the pan (toothpicks) it has to align with the overflow tube on the fuel tank, easy, but the top and bottom tubes are off-set.  You have to ensure the correct tube is aligned with the hole or you will get a pan full of fuel when you gas it up.  How do I know Embarassed , you can install the fuel tank either way.  That, and the needle has to be in the correct position.  Four chances to get it right.

Cox Mercedes tech P1011116
Cox Mercedes tech P1011117
Cox Mercedes tech P1011118
Cox Mercedes tech P1011119
Cox Mercedes tech P1011120
Cox Mercedes tech P1011121


Of all the Cox Products, the Mercedes is far and away the most complicated and to me the most interesting, fragile, frustrating, worthless piece of kit that Cox ever put out.  As a tether car it disappoints.  Getting it started by cranking the rear wheel feels like your destroying it before you even set it on the ground.  Leaning out - the thing is screaming, set it down and you must ensure that it is pointed in the right direction or it will yank the tether wire sending  the car in towards the base.  I literarily destroyed old number 2 in the process.  That part was fun.  Smile Sorta staged.

Cox Mercedes tech P7290026


But, to take apart, especially the differential it's a joy.  Everything is well thought out, Pull the steering wheel back unlocks the hood and the hinge keeps it open.  The steering wheel assembly is nicely done and works well, the fit and finish are first rate.

As eye candy and a collector piece for me it's a keeper.  But as a tether car forget-about-it.
rsv1cox
rsv1cox
Top Poster
Top Poster

2022 Supporter

2023 Supporter

2024 Supporter

Posts : 10666
Join date : 2014-08-18
Location : West Virginia

Back to top Go down

Cox Mercedes tech Empty Re: Cox Mercedes tech

Post  crankbndr Sun Jun 27, 2021 12:11 pm

I assembled one from a parts lot on eBay. All NIB parts. The lot had every part but had the wrong muffler, the muffler was the newer base. Bob sent me the correct muffler. Thanks Bob!! I found the clear plastic part that holds the engine in place very delicate and had to use caution screwing it down. It has to be the most complex model Cox made. Active suspension, gear box, driveshaft and hood release are a few I can think of. The engine is unique.


Cox Mercedes tech 1eef9b10


I scanned the stickers if anyone needs. Each mark on the line is 1" for sizing.


Cox Mercedes tech Fd7e8410
crankbndr
crankbndr
Top Poster
Top Poster

Posts : 3075
Join date : 2011-12-10
Location : Homestead FL

Back to top Go down

Cox Mercedes tech Empty Re: Cox Mercedes tech

Post  dckrsn Sun Jun 27, 2021 2:57 pm

Thumbs Up
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

Cox Mercedes tech Empty Re: Cox Mercedes tech

Post  rsv1cox Sun Jun 27, 2021 4:24 pm

I remember that CB, thought it was neat building one from parts, and - why didn't I think of that.

and..

thanks Bob. I didn't get that reed as clean as I should have, but they are so fragile I'm letting fresh fuel do the rest. The important parts, those four ears are in good shape. I think the relief in the crank shaft was probably pretty gooey too adding to the lock-up. I just heated it and ran light oil down through the crank while rotating flushing out the majority of it. I don't like pulling the drive washer unless necessary.

TOB
rsv1cox
rsv1cox
Top Poster
Top Poster

2022 Supporter

2023 Supporter

2024 Supporter

Posts : 10666
Join date : 2014-08-18
Location : West Virginia

Back to top Go down

Cox Mercedes tech Empty Re: Cox Mercedes tech

Post  crankbndr Sun Jun 27, 2021 5:21 pm

I don’t like pulling the drive plate either, a little Hoppes 9 down the bore free em right up. Followed with Rem oil. Rem oil is gone and have yet to find a good replacement.
crankbndr
crankbndr
Top Poster
Top Poster

Posts : 3075
Join date : 2011-12-10
Location : Homestead FL

Back to top Go down

Cox Mercedes tech Empty Re: Cox Mercedes tech

Post  rsv1cox Mon Jun 28, 2021 7:42 am


Or Walmart.

Last aerosol can I bought there was about $7,95.
rsv1cox
rsv1cox
Top Poster
Top Poster

2022 Supporter

2023 Supporter

2024 Supporter

Posts : 10666
Join date : 2014-08-18
Location : West Virginia

Back to top Go down

Cox Mercedes tech Empty Re: Cox Mercedes tech

Post  crankbndr Mon Jun 28, 2021 10:44 am

crankbndr
crankbndr
Top Poster
Top Poster

Posts : 3075
Join date : 2011-12-10
Location : Homestead FL

Back to top Go down

Cox Mercedes tech Empty Re: Cox Mercedes tech

Post  crankbndr Mon Jun 28, 2021 10:45 am

rsv1cox wrote:

Or Walmart.  

Last aerosol can I bought there was about $7,95.  

Its gone from my Wallyworld.
crankbndr
crankbndr
Top Poster
Top Poster

Posts : 3075
Join date : 2011-12-10
Location : Homestead FL

Back to top Go down

Cox Mercedes tech Empty Re: Cox Mercedes tech

Post  rsv1cox Mon Jun 28, 2021 11:06 am

Going there tomorrow, will check it.

Once again I'm all excited about these.  Got into my nearly destroyed #2.  Front suspension is shot, not springy.  Sits on the nose.  Simple fix from my spring inventory. But it works, withstood the bounce test. 

Cox Mercedes tech P1011122

Much more sophisticated solution here from a previous owner:

Cox Mercedes tech Cox_m190


Only problem is, it doesn't work.  No spring travel at all because the springs are too stiff.  Going to replace them with softer springs.  For Kicks i painted it silver and replaced the missing mirrors with ones cut from wire nuts.  Remember, i bought nearly all the junk cars from that period.  Fixing them is my enjoyment.

Cox Mercedes tech P1011124
Cox Mercedes tech P1011123
Cox Mercedes tech P1011125

Old #2 came with a non-standard Babe Bee thin wall.

Cox Mercedes tech P1011126

Going to dig out the tether base and run it again.  

Miserable thing that it is............
rsv1cox
rsv1cox
Top Poster
Top Poster

2022 Supporter

2023 Supporter

2024 Supporter

Posts : 10666
Join date : 2014-08-18
Location : West Virginia

Back to top Go down

Cox Mercedes tech Empty Re: Cox Mercedes tech

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