I have a probably quite old Fox Eagle 60 that runs very hot then slows down and finally quits. Runs good when it is cold. I have tried running it very rich but doesn't seem to make any difference. It still gets hot. I am using Sig 15% nitro all synthetic. It is becoming frustrating to say the least. Thanks for your help in advance.

most fox engines need 20-22 % oil also what size prop? 12 -6 or 11-7 are about the best.there were 4 versions of the eagle do you know which you have?

Don't know which engine it is. Here are a couple of pictures. Swinging a 11x7 master airscrew. 18% oil.

Hummmm it won't let me load the pics

I will try again--nope it says website may be under maint.

try a fuel with less nitro or a colder glow plug and a bit more oil .fox engines like castor oil.you can buy castor oil from sig and add it,if I remember correctly every oz of oil added to a gallon will increase the perecentage by aproximately 1% so about 4 oz of oil per gallon should give between 20-22 % oil.

What if what I am using is full synthetic--still add it? Still won't let load the pictures. Maybe someone like Ken, Minnflyer or Bruce can help me.

I can't upload either. I've sent a message to Marc and Nathan to see if there is a problem with the system.


Ken

goirish,
I have been running fox engines since my controline days starting in 1967,for more on fox engines check the glow engine forum or for fox fuel requirements
http://www.rcuniverse.com/forum/m_32...key_fox/tm.htm

thanks, I will try and get some 5% with castor. Don't want to change the whole setup if I don't have to. When it runs it screams.

The Fox's like castor oil and lots of it, at least 22%. 5% nitro is plenty.

Will any of my other engines run on that blend. enya 60, mag 91 4st. mag 52 4st. mag 46 2st. OS 46, 40 LA, OS 40. Or do I carry two blends?

all the 2 strokes should that fuel formulation has been around along time.

Then run the 4 strokes on my regular fuel.

I've only run a few pre surpass 4 strokes back then they used the same fuel with out a problem I do not have the 4 strokes you mentioned so I do not know.there is nothing wrong with using fuel with more oil you will notice that the instructions give minimum oil content but not a maximum.the nitro content affects idle performance more than anything else.try the 5% nitro blend in your engines and if it idles for you then you are all set.

I'm using 15% Sig Synthetic-full--also have cool-power 15% 18% blend

If your engine crankcase is three peices plus the head it is an Eagle II or III. A two peice crancase plus the head it is an Eagle IV. If it is one of those reduce the nitro to 5%. I run 0 nitro one these with good success. If I put 15% omega blend it becomes a real cranky engine. I'll bet if you reduce the nitro you'll get a better running engine with better fuel economy with cheaper fuel.

By the way a one peice crankcase means it is an original Eagle. I do not know if the 0-5% nitro suggestion does any good with it. I do not have any experience.

I will try to post a picture again. Nope still can't post

Looks like it is a one piece plus the head. Does that sound correct.

Does it look like this one?
http://cgi.ebay.com/Fox-Eagle-60-RC-...ayphotohosting

yes it does. Even the box is the same.

goiris
What we found back in those Good old days was the carb could not be adjusted where it would stay where you adjusted it . The only thing a guy can do is get one of their newer carbs or check under the 2 screws in front and see if the low speed has some thing in it.. With that bypass fuel system it can change on it own[:@]

try to post a pic again

OMG the muffler is on inverted----------------------just kidding Looks normal to me.

Gee!! Bruce--I though the muffler opening was supposed to face the prop so it would act like a super-charger. Also it has a pressure nipple on the back plate as well as on the muffler. So I use the back plate one?