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by rsv1cox Yesterday at 8:40 am
Castor oil for Cox
Page 1 of 1
Castor oil for Cox
I was under the impression that Cox engines need 100% or nearly 100% castor oil in the fuel mix.
Tower Hobbies shows that the Cox brand 1/2a fuel contains: This is the quart (946ml) Bottle of Super Power 1/2A Fuel from Cox.
FEATURES: Premium blend 25% nitro formula is ideal for model airplane, car, or
boat use
Special 18% oil package consists of 90% synthetic, and 10% castor
lubricant blend
What's the deal?
Tower Hobbies shows that the Cox brand 1/2a fuel contains: This is the quart (946ml) Bottle of Super Power 1/2A Fuel from Cox.
FEATURES: Premium blend 25% nitro formula is ideal for model airplane, car, or
boat use
Special 18% oil package consists of 90% synthetic, and 10% castor
lubricant blend
What's the deal?
Matt1967- Moderate Poster
- Posts : 14
Join date : 2012-08-18
Re: Castor oil for Cox
I just looked at the tech notes on that.
http://www3.towerhobbies.com/cgi-bin/WTI0001P?I=LXDBNH&P=8#otheritems
Cox engines are long known, dating back to Leroy Cox to need more castor than that. I've never been sure exactly how much oil, some say 17% and others say 20%, but always at least half of that must be castor. There's never been any disputing that among Cox employed engineers or just plain Cox expert users. I thought I remembered reading the Tower Cox notes before and seeing a reasonable mix, but maybe I was mistaken. I sure wouldn't run that stuff in my Cox engines. Or any brand of small 1/2A size engines. They spin too fast and hot not to have a good supply of castor.
http://www3.towerhobbies.com/cgi-bin/WTI0001P?I=LXDBNH&P=8#otheritems
Cox engines are long known, dating back to Leroy Cox to need more castor than that. I've never been sure exactly how much oil, some say 17% and others say 20%, but always at least half of that must be castor. There's never been any disputing that among Cox employed engineers or just plain Cox expert users. I thought I remembered reading the Tower Cox notes before and seeing a reasonable mix, but maybe I was mistaken. I sure wouldn't run that stuff in my Cox engines. Or any brand of small 1/2A size engines. They spin too fast and hot not to have a good supply of castor.
_________________
Don't Panic!
...and never Ever think about how good you are at something...
while you're doing it!
My Hot Rock & Blues Playlist
...and never Ever think about how good you are at something...
while you're doing it!
My Hot Rock & Blues Playlist
RknRusty- Rest In Peace
- Posts : 10869
Join date : 2011-08-10
Age : 68
Location : South Carolina, USA
Re: Castor oil for Cox
The Tower hobbies HCAP2900 I bought a while back (in pints only) is not offered any more
May be what you remember Rusty:
Search of the product has this tech note
"This is a 1/2 pint of Hobbico Super 1/2A 25% Nitro Fuel.
FEATURES: Designed for 1/2A category of model airplane engines, and Cox model
airplane engines, as well as boat and car engines
Special Klotz oil formulation helps lubricate and cool engine
components
25% nitro offers benefits such as more RPM, better throttle response,
smoother idle, and reduced needle valve sensitivity compared to
15% nitro fuel
18% lubrication content"
Because it was %18 lube I add a wee bit of Sig Castor...no formula..I just add an oz or three...
I had assumed the Klotz was mostly if not all Castor blend because they reference Cox model engines
May be what you remember Rusty:
Search of the product has this tech note
"This is a 1/2 pint of Hobbico Super 1/2A 25% Nitro Fuel.
FEATURES: Designed for 1/2A category of model airplane engines, and Cox model
airplane engines, as well as boat and car engines
Special Klotz oil formulation helps lubricate and cool engine
components
25% nitro offers benefits such as more RPM, better throttle response,
smoother idle, and reduced needle valve sensitivity compared to
15% nitro fuel
18% lubrication content"
Because it was %18 lube I add a wee bit of Sig Castor...no formula..I just add an oz or three...
I had assumed the Klotz was mostly if not all Castor blend because they reference Cox model engines
fredvon4- Top Poster
-
Posts : 4000
Join date : 2011-08-26
Age : 68
Location : Lampasas Texas
Re: Castor oil for Cox
If you want it to last- castor is king. It isn't just the ball and socket at the piston; except in a few cases the case itself is the main bearing material and a steel shaft turning several thousand RPMs without an adequate cushion effect wears REAL fast.
If you like your motor- keep the castor and a generous level as well.
JK
If you like your motor- keep the castor and a generous level as well.
JK
JKinTX- New Member
- Posts : 3
Join date : 2013-05-28
Re: Castor oil for Cox
Well put JK.
Also welcome to the forum.
Bob
Also welcome to the forum.
Bob
dckrsn- Diamond Member
- Posts : 2750
Join date : 2010-10-21
Age : 71
Location : Long Island, New York
Re: Castor oil for Cox
Welcome to the forum JK!
Like they say, never Assume.
This subject was brought up last month on the .049 Collectors site.
Hobbico owns the rights to the name 'Cox' and can put it on a can of Bull Sh*t if they think it will sell. The fuel formula is basically R/C car fuel. Apparently the 1/2a market is too small to mix up a big batch of fuel, yet potentially profitable to whip up some labels.
If you want you engines to last you need about 20% oil with 17-20% being caster, to run more your performance will suffer, to run less the engine will.
Like they say, never Assume.
This subject was brought up last month on the .049 Collectors site.
Hobbico owns the rights to the name 'Cox' and can put it on a can of Bull Sh*t if they think it will sell. The fuel formula is basically R/C car fuel. Apparently the 1/2a market is too small to mix up a big batch of fuel, yet potentially profitable to whip up some labels.
If you want you engines to last you need about 20% oil with 17-20% being caster, to run more your performance will suffer, to run less the engine will.
Re: Castor oil for Cox
JKinTX wrote:If you want it to last- castor is king. It isn't just the ball and socket at the piston; except in a few cases the case itself is the main bearing material and a steel shaft turning several thousand RPMs without an adequate cushion effect wears REAL fast.
If you like your motor- keep the castor and a generous level as well.
JK
I guess this is a good point too. My cox does not run on full speed every time because it is build in a rc car. In the 90ies rc car fuel was based with some castor but not enough. I didn't had the problem with the ball and socket due to limited rpm's but the engine case was worn out very quickly (much fuel leaked out between prop-plate and casing).
I didn't thought about this point yet btw: i am using the correct ammount of castor since i have signed in here (Thank you Forum).
The manual of my Kyosho car says only : use Car Fuel with minimum 16% Nitro.
For the next winter I will spend this destructed engine case a ball bearing for the crankshaft.
coxaddicted- Gold Member
- Posts : 492
Join date : 2012-07-11
Age : 44
Location : North-Rhine Westphalia, Germany
Re: Castor oil for Cox
I mix my own:
25% nitro
12% Klotz castor oil
8% Klotz synthetic oil
The remainder methanol
My engines go forever - one at least has been well used (abused) for 15 years, and that's nearly forever
25% nitro
12% Klotz castor oil
8% Klotz synthetic oil
The remainder methanol
My engines go forever - one at least has been well used (abused) for 15 years, and that's nearly forever
dinsdale- Account Deactivated by Owner
- Posts : 317
Join date : 2012-02-22
Re: Castor oil for Cox
That sounds like a good healthy blend, Dins.
_________________
Don't Panic!
...and never Ever think about how good you are at something...
while you're doing it!
My Hot Rock & Blues Playlist
...and never Ever think about how good you are at something...
while you're doing it!
My Hot Rock & Blues Playlist
RknRusty- Rest In Peace
- Posts : 10869
Join date : 2011-08-10
Age : 68
Location : South Carolina, USA
Re: Castor oil for Cox
coxaddicted wrote:JKinTX wrote:If you want it to last- castor is king. It isn't just the ball and socket at the piston; except in a few cases the case itself is the main bearing material and a steel shaft turning several thousand RPMs without an adequate cushion effect wears REAL fast.
If you like your motor- keep the castor and a generous level as well.
JK
I guess this is a good point too. My cox does not run on full speed every time because it is build in a rc car. In the 90ies rc car fuel was based with some castor but not enough. I didn't had the problem with the ball and socket due to limited rpm's but the engine case was worn out very quickly (much fuel leaked out between prop-plate and casing).
I didn't thought about this point yet btw: i am using the correct ammount of castor since i have signed in here (Thank you Forum).
The manual of my Kyosho car says only : use Car Fuel with minimum 16% Nitro.
For the next winter I will spend this destructed engine case a ball bearing for the crankshaft.
Your English is better than my German is- and half my family hails from there, and some of the extended family specimens still are there.
JK
JKinTX- New Member
- Posts : 3
Join date : 2013-05-28
Re: Castor oil for Cox
Your English is better than my German is- and half my family hails from there, and some of the extended family specimens still are there.
JK[/quote]
Thank you ! I do my best. I had english in school over a decade ago. Beside my interest in cox engines, this forum is a ,,training'' to become not rusty in this language.
JK[/quote]
Thank you ! I do my best. I had english in school over a decade ago. Beside my interest in cox engines, this forum is a ,,training'' to become not rusty in this language.
coxaddicted- Gold Member
- Posts : 492
Join date : 2012-07-11
Age : 44
Location : North-Rhine Westphalia, Germany
Re: Castor oil for Cox
I took the plunge and ordered a gallon of Nitro and a gallon of methanol from E-bat Torco yesterday
High priced but free shipping
My search locally (no close racing or speed shops) found some technical Nitro but at a horribly high price for a 5 gallon can ..$327.99
Is there a compelling reason to order up some Klotz?
...I have a few quarts of Sig 100% Castor Oil
Planning to formulate for 15% 25% and 35% in quarts, all with 20%~22% oil
Wish I could find Pint or Quart Metal Cans with opening in end instead of center
Moisture and light are the killers and metal cans are the preferable storage for me
High priced but free shipping
My search locally (no close racing or speed shops) found some technical Nitro but at a horribly high price for a 5 gallon can ..$327.99
Is there a compelling reason to order up some Klotz?
...I have a few quarts of Sig 100% Castor Oil
Planning to formulate for 15% 25% and 35% in quarts, all with 20%~22% oil
Wish I could find Pint or Quart Metal Cans with opening in end instead of center
Moisture and light are the killers and metal cans are the preferable storage for me
fredvon4- Top Poster
-
Posts : 4000
Join date : 2011-08-26
Age : 68
Location : Lampasas Texas
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