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Fuel for Cox .049 in Europe
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Fuel for Cox .049 in Europe
Trying to find appropiate fuel here in the Netherlands for the .049 .
I have 15% Nitro with Synthetic oil , I can get 25% with a bit of trouble , also Synthetic oil .
Would that work if I added Castor Oil at what percentage .
Ted
I have 15% Nitro with Synthetic oil , I can get 25% with a bit of trouble , also Synthetic oil .
Would that work if I added Castor Oil at what percentage .
Ted
GpBear- Moderate Poster
- Posts : 24
Join date : 2020-07-27
Re: Fuel for Cox .049 in Europe
buy merlin fuel
it should be 50/50 between synethic and natual
I run most of my coxes on it and they have not failed
it should be 50/50 between synethic and natual
I run most of my coxes on it and they have not failed
robot797- Platinum Member
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Age : 34
Re: Fuel for Cox .049 in Europe
Can you get hold of Model Technics (UK) fuel there? I use the GN25 - 25% nitro, 20% castor.
=Adrian=
=Adrian=
Ada99- Moderate Poster
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Join date : 2018-07-18
Re: Fuel for Cox .049 in Europe
I do not think so , no one wants to ship it from the UK .
Possibly I may have found some from a small private Serpent shop here in the North of the Netherlands , waiting for a call . Keep my fingers crossed .
Possibly I may have found some from a small private Serpent shop here in the North of the Netherlands , waiting for a call . Keep my fingers crossed .
GpBear- Moderate Poster
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Re: Fuel for Cox .049 in Europe
GpBear wrote:Trying to find appropiate fuel here in the Netherlands for the .049 .
I have 15% Nitro with Synthetic oil , I can get 25% with a bit of trouble , also Synthetic oil .
Would that work if I added Castor Oil at what percentage .
Ted
What is the oil percentage?
Levent Suberk- Diamond Member
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Location : Türkiye
Re: Fuel for Cox .049 in Europe
Pelikan of Czech Republic sells FAI fuel in some European countries which is 80/20 methanol/castor. You need to cocktail it up with nitro if you can find somewhere.
There is a Dutch member here, you can screen him in Memberlist by country, he may also advise you.
I blend my fuels at home. Methanol and castor are sold in chemicals' shops and I stocked up from nitro back when it was sold in hobby shops.
It is an ancient and recurring discussion topic here if all castor or castor and synthetic mix are best for COX. I prefer all castor and most of my COX engines will outlive me.![Very Happy](https://2img.net/i/fa/i/smiles/icon_biggrin.png)
There is a Dutch member here, you can screen him in Memberlist by country, he may also advise you.
I blend my fuels at home. Methanol and castor are sold in chemicals' shops and I stocked up from nitro back when it was sold in hobby shops.
It is an ancient and recurring discussion topic here if all castor or castor and synthetic mix are best for COX. I prefer all castor and most of my COX engines will outlive me.
![Very Happy](https://2img.net/i/fa/i/smiles/icon_biggrin.png)
balogh- Top Poster
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Re: Fuel for Cox .049 in Europe
Got a Litre of fuel coming tommorow , will update with specifications then .
GpBear- Moderate Poster
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Join date : 2020-07-27
Re: Fuel for Cox .049 in Europe
Update aboput fuel available here in the Netherlands .
I have bought some Merlin Fuel which is manufactured in Spain .
What I have now is 1 liter of Merlin Lube MF-325 which has a composition of 25% Nitro , 18 % oil ( mix of Castor and Synthetic ) unknown what percentage is what . Sent an email to the factory .
The proble know is that this fuel is not nomally available here and I think I may have been sold an out of date fuel . Shelve life is 2 years .
What is readily availble is Merlin Expert MF-225 which is 25% Nitro and 10% oil mixture of Castor oil and Synthetic oil , Again I sent an email to factory today to find what composition of Castor and Synthetic . Knowing this will allow me to add more castor oil to this fuel .
When I have more Info I will post this .
I have bought some Merlin Fuel which is manufactured in Spain .
What I have now is 1 liter of Merlin Lube MF-325 which has a composition of 25% Nitro , 18 % oil ( mix of Castor and Synthetic ) unknown what percentage is what . Sent an email to the factory .
The proble know is that this fuel is not nomally available here and I think I may have been sold an out of date fuel . Shelve life is 2 years .
What is readily availble is Merlin Expert MF-225 which is 25% Nitro and 10% oil mixture of Castor oil and Synthetic oil , Again I sent an email to factory today to find what composition of Castor and Synthetic . Knowing this will allow me to add more castor oil to this fuel .
When I have more Info I will post this .
GpBear- Moderate Poster
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Join date : 2020-07-27
Re: Fuel for Cox .049 in Europe
Update on Merlin Fuel MF-225 .
25% Nitro
5% Castor Oil
5% Synthetic Oil
25% Nitro
5% Castor Oil
5% Synthetic Oil
GpBear- Moderate Poster
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Re: Fuel for Cox .049 in Europe
GpBear wrote:Update on Merlin Fuel MF-225 .
25% Nitro
5% Castor Oil
5% Synthetic Oil
Add 120 cc castor oil.
https://www.coxengineforum.com/t12624-oil-percentage-formula
Levent Suberk- Diamond Member
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More castor oil
GpBear wrote:Update on Merlin Fuel MF-225 .
25% Nitro
5% Castor Oil
5% Synthetic Oil
GpBear: more castor oil please. Some say 10% minimum, some say 20% minimum. I think it was earlier in this thread. You reread and decide. A little castor oil won’t reduce Nitro % much.
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happydad- Rest In Peace
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Re: Fuel for Cox .049 in Europe
Nitro lowers to 22.32% from 25% by adding 120 cc castor oil.
Levent Suberk- Diamond Member
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Re: Fuel for Cox .049 in Europe
If I cannot get the MF-325 fuel and have to buy MF-225 as all the hobby shops stock this , then I will add another 5% . 50ml of Castor Oil per litre to give a mixture of 10% Castor Oil and 5% Synthetic Oil .
Waiting for a email from the Local Merlin Rep to let me know if there is anyone stocking the MF-325 anymore .
Waiting for a email from the Local Merlin Rep to let me know if there is anyone stocking the MF-325 anymore .
GpBear- Moderate Poster
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Join date : 2020-07-27
Re: Fuel for Cox .049 in Europe
you can also order this
https://eurol.com/en/products/eurol-racing-1-ricinus/
and mix it yourself
I use it for all my diesel engines and it works great
https://eurol.com/en/products/eurol-racing-1-ricinus/
and mix it yourself
I use it for all my diesel engines and it works great
robot797- Platinum Member
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Re: Fuel for Cox .049 in Europe
Are you suggesting that Ricinus can be used in place of Castor Oil in a fuel mixture .
GpBear- Moderate Poster
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Re: Fuel for Cox .049 in Europe
its the dutch name for castor oil
also you can get the medical grade in any drugstore/beauty shop
(used to get it at the DA)
but the medical grade is expencive
and dont drink the medical one its a laxative
also you can get the medical grade in any drugstore/beauty shop
(used to get it at the DA)
but the medical grade is expencive
and dont drink the medical one its a laxative
robot797- Platinum Member
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Age : 34
Re: Fuel for Cox .049 in Europe
Yes , Wonder Olie at the DA & Trekpleister .
I used to use it 25 years ago for a fuel additive my Serpent Vectors .
Now to find someone who stocks it in the North .
I used to use it 25 years ago for a fuel additive my Serpent Vectors .
Now to find someone who stocks it in the North .
GpBear- Moderate Poster
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Re: Fuel for Cox .049 in Europe
just go with the bigger package its cheaper in the long run
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robot797- Platinum Member
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Re: Fuel for Cox .049 in Europe
![Fuel for Cox .049 in Europe Screen63](https://i.servimg.com/u/f92/19/53/58/49/screen63.png)
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Last edited by getback on Thu Aug 06, 2020 7:03 am; edited 1 time in total (Reason for editing : change meaning)
getback- Top Poster
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Re: Fuel for Cox .049 in Europe
The MF-325 would be ideal , but none of the hobby shops want to stock it as the volume that they have to buy is too large for the demand .
The hobby shops here in the Netherlands have gone to MF-225 as the demnd is large enough that they will stock it .
So I think I will buy the MF-225 and add extra lubricant ( Ricinus ) myself .
Flying is Electric now , might try later once I get more experienced again with the .049 .
Last time I ran a Cox engine was about 1981 .
The hobby shops here in the Netherlands have gone to MF-225 as the demnd is large enough that they will stock it .
So I think I will buy the MF-225 and add extra lubricant ( Ricinus ) myself .
Flying is Electric now , might try later once I get more experienced again with the .049 .
Last time I ran a Cox engine was about 1981 .
GpBear- Moderate Poster
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Levent Suberk- Diamond Member
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Re: Fuel for Cox .049 in Europe
Levent Suberk wrote:Nitro lowers to 22.32% from 25% by adding 120 cc castor oil.
Overall net affect IMO is of little consequence, because oil is inert, just means opening needle a touch more to allow more fuel mix in for maintaining same combustion level. Engine still "sees" the 25%, with a touch more oil mist exuded out of the exhaust. OTOH, if methanol is increased, then it will decrease nitro content. Anyway, my 2 quid.
GallopingGhostler- Top Poster
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Re: Fuel for Cox .049 in Europe
GallopingGhostler wrote:Levent Suberk wrote:Nitro lowers to 22.32% from 25% by adding 120 cc castor oil.
Overall net affect IMO is of little consequence, because oil is inert, just means opening needle a touch more to allow more fuel mix in for maintaining same combustion level. Engine still "sees" the 25%, with a touch more oil mist exuded out of the exhaust. OTOH, if methanol is increased, then it will decrease nitro content. Anyway, my 2 quid.
I'm not good with chemistry, so I don't know about this.
Levent Suberk- Diamond Member
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Re: Fuel for Cox .049 in Europe
Levent Suberk wrote:I'm not good with chemistry, so I don't know about this.GallopingGhostler wrote:Overall net affect IMO is of little consequence, because oil is inert, just means opening needle a touch more to allow more fuel mix in for maintaining same combustion level. Engine still "sees" the 25%, with a touch more oil mist exuded out of the exhaust. OTOH, if methanol is increased, then it will decrease nitro content. Anyway, my 2 quid.Levent Suberk wrote:Nitro lowers to 22.32% from 25% by adding 120 cc castor oil.
I'm not a chemist, either, although was required to take a chemistry class and a couple thermodynamics courses in college, more of a common sense position. There was one engine guru, can't remember which now, who also brought this up in a discussion on fuels may be a couple years ago. And, it makes sense. Plus, been adding Castor to model plane fuel for ABC's, the iron piston in a steel sleeve engines seem to run fine without loss in power.
Wasn't meaning to disagree, but discuss a point to consider. So, I guess ignorance (mine that is
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GallopingGhostler- Top Poster
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Re: Fuel for Cox .049 in Europe
Apart from the goo it leaves on the plane - which is no issue for me - the only disadvantage with castor is that it absorbs a lot of heat and the engine spits it out. Synt oil burns - I am not sure if in an exothermic or endothermic fashion i.e. dissipating or adding heat the the hot gases - but it robs less heat from the cycle than castor and hence improves, compared to castor, the not really shiny efficiency of the 2 stroke engines .
Nevertheless I will still stick to castor...or castor will stick to my hand, no matter.![Very Happy](https://2img.net/i/fa/i/smiles/icon_biggrin.png)
Nevertheless I will still stick to castor...or castor will stick to my hand, no matter.
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balogh- Top Poster
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