stunthanger.com
Engine basics => Engine set up tips => Topic started by: Kozmo77 on January 05, 2014, 12:26:31 PM
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Help me out guys- I have a sinking feeling that the Fox 35 I found on Ebay awhile back wont have power to pull an overweight Viking on 60' lines with real "authority". Sig Mfg. offers the above mentioned engine for the enormous sum of $49.99. Yes I would like to pony up to a real engine like Randy's PAs or something with more gravitas but along the way I acquired a number of Foxes. McCoys an Enya, Gh Torp, ST35, all at 35 or less. Did grab a Fox RC in either a 40 or 45. Can't tell for certain(think it's a 45) but the block is huge compare to the stunt 35 Fox. AND I do pay attention to the threads and respect immensely the perspectives of real aces that post here. I realize that the new designs are superior in many ways. A phone call to Sig informed me they still have the Aviastar 46 in CL form. What do you say? Try the Fox or go straight to a larger engine. The Viking weighs 39 ozs w/o motor, tank, wheels etc. Would appreciate some input Thanks
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I used the search function on here and got quite a few threads on the Aviastar 46. It is heavy at 12.7 ounces.Not a good choice for your Viking. I Have seen .35's in Vikings but they were light at 32 ounces. Mine with a ST/46 only weighs 42 ounces. A LA 46 would be the way to go. A lot of people use Fox 59's in them.
Ed
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%^@ Thanks Eddy- I told you I had a sinking feeling every time I picked it up to sand or paint ??? ??? The thing just got heavy as things went along.The real tragedy is.... it has all the paint on it and of course that Blue Bomb OS is NOT going to fit those skinny mounts the Fox sits in. I know it might fly but I wouldn't do anything overhead with it. ;D I believe I could butcher the nose and crowd in that Max. I spent at least two long afteernoons making a pretty nice cowl and ...well just too much time.. Well that's why I follow this and other sites picking brains. Thanks for your response. I've been away for at least 47 yrs. and so much has changed. I've looked at those 46LAs on Ebay and watched them snatched away. I might stumble onto something and invest some more time to make that hog a flier. I mean I read how some craft go to 70 oz. but you gotta have HP some make that happen ~> Once again , thanks
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I have seen Viking weigh as much as 50-55 ounces but they were powered with Fox 59's or ST/51's
I have built four but here is the first one in 1999, Fox 59 powered
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I flew my 49 3/4 oz ARF Cardinal with a ST G34, and it flew it with authority. Randy Smith advised to use a 11" prop and run at a steady 2 and that did the trick... I don't think there priced as cheap as a Aviastar.
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I have an LA46 in a 52 (and some change) oz Nobler. Great combo. The LA46 is just plane (pardon the pun) hard to beat. Price is right and they run well with little to no tinkering.
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Is the Sig version a C/L version? I have heard that the C/L versions that Brodak sells are timed different than the R/C versions. Might be wrong here but why take a chance when for little more you could get an LA-46? 8)
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I have just brought an Aviastar .46CL and put a litre of fuel though it today. So far I am impressed with it. It starts very easy, 1 or 2 flicks and it's away. Holds a rich setting very nicely. By this afternoon it was running like and old sewing machine. Mine is the proper control line stunt version, I have an RC version too and there are obvious differences in the porting. I ran it on fuel made up of 75% methanol and 25% Klotz Benol castor oil. Prop was an 11x5 Zinger wood. I don't own a tacho so I can't comment as to rpm figures. Yes it's on the heavy side for a .46 but it seems well made and very powerful. Only negative is that I found the engine to be full of metal filings when I first inspected it so I fully stripped it down and cleaned everything up. Oh and the muffler is bloody huge! I think Brodak sell a nice small one for it though. I am confident it will make a pretty good stunt engine. I will post a link to a YouTube video of it running later on, slow internet here in New Zealand is taking all day to upload.
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Here is a link to Youtube of mine running on the bench
http://www.youtube.com/watch?v=C9VVjfd7Rbg
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I just picked up two of the new .53 engines. I suppose I will open them up and look for metal shavings before I run.
But since I am not finding other engines this size, I will try them out.