prgonzalez

I am considering buying a Magnum 0.52 FS. What airplanes in terms of weight or wingspan are good fit for this engine?

Is this engine comparable in performance to a OS 0.46 FX 2-Stroke?

jeffie8696

In my opinion the Mag52FS is a good replacement for a 40 size engine but not a 46. Ithink a good plane for the Mag 52 is something light like the Uproar from Great Planes. Maybe the Escapade too.

Ernie Misner

You also have to look at how a particular engine is going to balance on a particular plane without adding weight anywhere. How much does it weigh compared to say a .46AX?

If you can find a Sig 4* 40 it would make a nice light combo.

Thanks,

Ernie

Ernie Misner

Hey, that Mag 52FS is on sale today, one day only...... for..... $99...!! No kidding. At Hobby People. Get another one.

Ernie Misner

mike early

It's a shame that manufacturers are not making as many smaller ARFs these days.

goirish

Ernie

I pulled up HobbyPeople and it doesn't say one day only.  also the 91 4s on sale for 129.00

prgonzalez

I have a GP Dazzler with an OS .46-FX w/APC 11x5 with an overall weight of 5.0 pounds and unlimited vertical performance. The Dazzler has 0.5 oz of lead at the tail for correct balance. I have been operating only 2-stroke engines in all my four airplanes.

I have been thinking on this Magnum .52 FS to be my first flying 4-stroke engine. I have larger displacement Magnums (0.91 to 1.8) that I have been buying for future projects but none of them are installed yet.

So, if the math is correct, the OS 46-FX weights about 17.3 oz w/muffler. The Magnum 52 weight is 15.7 oz w/mufller. The difference will probably be equivalent to removing the 0.5 oz of lead the Dazzler has at the tail. As long as I can get similar RPMs with 11x5 prop, I should be okay in the performance of the Dazzler. Then, I can get to know more about operating 4-strokes before I have my TF Spit 60 on the air with either Magnum 0.91 or 1.2 I have.

Thanks all.

mike early

Not sure if 11x5 would be enough prop for that engine. I use a 11x10 on my saito 56...

prgonzalez

Good point, I would have to say...find a prop that would give me same performance as the 11x5 in the 46-FX.

I will start with the break-in prop 12x6 as recommended by Magnum and then switch to 12x5 if I need to.

jeffie8696

My favorite prop for 52 size four strokes is the 11X7.5 . 4S engines dont rev up as high as 2S engines so a little higher pitch is a good idea in most cases.

blw

My Feedback: (3)

There's a few kits that would fit the bill. The Sig Kavalier comes to mind.

AMB

I HAVE ONE IN AN Apache lll vmar on its side cowls in nice martin

Ernie Misner

If you get an Uroar or Dazzler (very similar!) try mounting the engine a little "more that" horizontal so the muffler comes out right down below. Mine was slick that way with an OS 32 and mac's muffler. They are fun but do not like to knife edge well at all.

Ernie Misner

Phoenixangel

Goldberg tiger 2 with that engine swinging a 12x5 is a perfect fit and an absolute blast. Well mine is built as a tail dragging beasty. I am not sure if the stock trike gear would allow the 12x5 ....

acdii

I dont know how it compares to an OS 52 FS, but thats the size in my Kadet LT40 swinging an 11x7.5 and it has just the right amount of power. I also picked up the Magnum 52 and the 91 from HP, they have been on sale for 3 weeks now.

prgonzalez

Magnum sale ends this weekend, June 30th. I bought 4 engines from them this month: 2 x .91, 1 x .70 and 1 x .52. I am considering another engine this weekend. I have been waiting long time for these prices. The .91 is the best price of all.

mike early

Let us know what plane you select

Sport_Pilot

I was not happy with the last Magnum I bought. The hobby is for enjoyment, buying engines at discount prices is not worth it if it brings frustration.

mike early

I'd rather have 2 saitos than 4 magnums, probably...but that is entirely off topic.

jeffie8696

Magnums are OK if you buy them new with a warranty and dont mind getting a clunker once in a while, some of us are willing to do the bench testing to save the cash.

Sport_Pilot

The warranty was no good as I could not prove that the needle assemblybroke becaue of brittle metal as apposed to simply turning too hard. I had the opposite problem with an ASP engine years after the warranty was expired. The soft metal of the carb base broke with just a small twist of the carb clinch bolt.

prgonzalez

So far I am considering TH Uproar, GP Dazzler, GP Slow Poke, GP T-Craft, and twin version of GP Super Sportster 60.

jeffie8696

Friend of mine is on his third Dazzler and LOVES them.

maukaonyx

Try the Phoenix Funstar with the Magnum 52. I have an OS 52 Surpass II in mine and it's a perfect match with a weird prop...the 12.75x3.25 or whatever it is, lol. Jon

prgonzalez

Hi Maukaonyx,

That's a nice looking airplane. Are plans available or as a wood kit?