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first cox .049 motor in 50 years
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first cox .049 motor in 50 years
Well,don't feel so bad about posting here now. I now own a Cox motor at least. hehe
It's stuck . Anything I need to know or do before atempting to free engine up?
MMT
It's stuck . Anything I need to know or do before atempting to free engine up?
MMT
MMT- Bronze Member
- Posts : 58
Join date : 2012-02-10
Location : Tennessee, U.S.A.
Re: first cox .049 motor in 50 years
Yes, throw it away QUICK before you end up like the rest of us AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAArgh
John Goddard- Diamond Member
- Posts : 2447
Join date : 2011-11-24
Age : 59
Location : Leyton North East London
Re: first cox .049 motor in 50 years
Just soak it in fuel before forcing it to turn over make sure it is free.
Re: first cox .049 motor in 50 years
MMT wrote:Well,don't feel so bad about posting here now. I now own a Cox motor at least. hehe
It's stuck . Anything I need to know or do before atempting to free engine up?
MMT
Seriously though, apart from a good over night soak in plus Gas, WD40 etc.
DO NOT attempt to dismantle it without 2 cox wrenches.
The chances of doing so without harming it or even wrecking it are V slim.
In my (limited) experience it'll probably be the crankshaft thats stuck.
Once you've got the head, cylinder off, have soaked over night or longer screw the prop
bolt in and give it a light tap. All but the most mangled will free up.
Good luck
J
John Goddard- Diamond Member
- Posts : 2447
Join date : 2011-11-24
Age : 59
Location : Leyton North East London
Re: first cox .049 motor in 50 years
If it is still stuck after a day or two soaking, heat it up with a hairdryer. It is the castor that has stiffend (most probally)
Regards
Thomas Pedersen
Regards
Thomas Pedersen
altidsulten- Gold Member
- Posts : 179
Join date : 2011-12-03
Location : Hjørring, Denmark
Re: first cox .049 motor in 50 years
Remove the backplate. If you can remove the tank, then do so, but take care that you don't tear the tank/crankcase gasket. If you can get the tank to budge a little, adding fuel or denatured alcohol to the gasket area may help free this up. Ideally, you'll be able to fill the crankcase area with whatever solvent you're using and let that soak for a while. Do the same with the piston/cylinder area --- remove the glowhead if possible, but again take care and don't force. After a good soaking, heat the entire unit --- a blow dryer will get it pretty warm. Heat is your friend since it tends to soften congealed castor oil. If it remains stuck, don't apply too much pressure, just continue to soak, re-heat and try again.
andrew
andrew
stuck .049 Cox engine
Thanks to all for the advice. John Goddard's first peice of advice is the probabily the best
but it appears that I'm not smart enough to take it. Will now proceed to try and help the little guy. Now, where did I put my second engine wench?
but it appears that I'm not smart enough to take it. Will now proceed to try and help the little guy. Now, where did I put my second engine wench?
MMT- Bronze Member
- Posts : 58
Join date : 2012-02-10
Location : Tennessee, U.S.A.
Re: first cox .049 motor in 50 years
MMT wrote:Thanks to all for the advice. John Goddard's first peice of advice is the probabily the best
but it appears that I'm not smart enough to take it. Will now proceed to try and help the little guy. Now, where did I put my second engine wench?
DO NOT try to unscrew the cylinder unless you are ABSOLUTELY sure the piston is free, otherwise you WILL break the codrod. (I speak from bitter experience!)
Ivanhoe- Diamond Member
- Posts : 1752
Join date : 2011-09-30
Location : Northern Ireland
Re: first cox .049 motor in 50 years
Put some heat on it with a hairdryer before dissassembly,,nice and warm.
PV Pilot- High Tech Balsa Basher
- Posts : 1854
Join date : 2011-08-11
Age : 57
Location : The ragged end of the Universe.
Re: first cox .049 motor in 50 years
Ivanhoe wrote:MMT wrote:Thanks to all for the advice. John Goddard's first peice of advice is the probabily the best
but it appears that I'm not smart enough to take it. Will now proceed to try and help the little guy. Now, where did I put my second engine wench?
DO NOT try to unscrew the cylinder unless you are ABSOLUTELY sure the piston is free, otherwise you WILL break the codrod. (I speak from bitter experience!)
Or give the piston a whopping amount of play. I have done that before.
Re: first cox .049 motor in 50 years
,,or bend the rod trying to spin over a seized/gummed motor.
PV Pilot- High Tech Balsa Basher
- Posts : 1854
Join date : 2011-08-11
Age : 57
Location : The ragged end of the Universe.
Re: first cox .049 motor in 50 years
MMT:
Try this for information:
http://coxengines.ca/TSC.pdf
Most of your questions have been asked here many times previously. The forum helped Bernie design this guide. This will give you a printable reference for your guidance.
There are other Cox guides on this site too.
Try this for information:
http://coxengines.ca/TSC.pdf
Most of your questions have been asked here many times previously. The forum helped Bernie design this guide. This will give you a printable reference for your guidance.
There are other Cox guides on this site too.
SuperDave- Rest In Peace
- Posts : 3552
Join date : 2011-08-13
Location : Washington (state)
Re: first cox .049 motor in 50 years
Ivanhoe wrote:MMT wrote:Thanks to all for the advice. John Goddard's first peice of advice is the probabily the best
but it appears that I'm not smart enough to take it. Will now proceed to try and help the little guy. Now, where did I put my second engine wench?
DO NOT try to unscrew the cylinder unless you are ABSOLUTELY sure the piston is free, otherwise you WILL break the codrod. (I speak from bitter experience!)
with my first golden bee, it was stuck and i tried turning it over and the pin that is on the crankshaft that connects to the connecting rod snapped
mitchg95- Diamond Member
- Posts : 2103
Join date : 2011-12-19
Age : 28
Location : Geneva, mn, USA
Re: first cox .049 motor in 50 years
MMT wrote:Thanks to all for the advice. John Goddard's first peice of advice is the probabily the best
but it appears that I'm not smart enough to take it. Will now proceed to try and help the little guy. Now, where did I put my second engine wench?
i've got a second pair of .049 wrenches, pm me if you want them mmt
mitchg95- Diamond Member
- Posts : 2103
Join date : 2011-12-19
Age : 28
Location : Geneva, mn, USA
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