Evolution 58GX?

[sprice50]

Hello,

I was just reading about the 58cc Evolution 58GX.

Horizon states 8.5HP, but this seems unreasonable when compared to other major brands out there. I would have thought around 6.5HP for an engine this size. Am I wrong?

Also, how heavy a plane could you 3D decently with using this motor and a 24X10 (6,900rpm reported)

http://www.horizonhobby.com/Products...odID=EVOE58GX2

I am looking for comments from owners of this motor.

Thanks,

[ben_beyer]

I would buy a 3W, DA, BME, or Brison before I'd buy an Evolution 58. I had one and I had to send it in to Horizon (who has terrible customer service) after both weekends that I took my airplane out to fly. I hear good things about the smaller Evolution engines, but the 58 is a turd.

[crhammond]

I had equally bad experience with my 58GX. It's been to Horizon twice and still doesn't work right.

When it works it makes crazy power - turns a 23x10 PT at 6,700 on an in-cowl muffler and it's not close to broken in yet. But - it is hard to start and cuts out whenever I do a left snap, spin or other high-g left torquing manuvers (no, it's NOT the fuel system.)

I have had 2 carbs replaced and the reeds - that got it working to the point where the needles actually work - but I can't fly it hard without fear of it cutting out. Horizon service is friendly and sympathetic but they take FOREVER. Both times it was over 1 month before they sent it back... And now I have to send it a 3rd time.

The MVVS version is supposed to be the same but I think not. Most people love the MVVS. I have the latest version MVVS 26cc and that is bullet proof. The new Evolution 58GX with the new ignition is supposed to be better...

I wish I could give mine back, it sucks.

[sprice50]

Thanks for the feedback guys. That's enough info for me

[crhammond]

Look at the MVVS version with the magnesium case - that one I have heard great things about. Those numbers you saw are possible on a canister - not on an in-cowl muffler. Or look at a ZDZ 60... You can get MVVS service in Canada too which is a plus.

I have seen a few posts from people who have had good Evolution 58's too... not as many as th ebad posts though.

I have DA, ZDZ, FPE and MVVS engines and have had 0 problems with any of them (well no warrantee ones anyway HA HA.) The service from DA, Rc Showcase and Kurt at FPE is awesome - they all do turn-around inside 48 hrs 90% of the time.

[Greyhoundman]

My first 58 ate the piston after 5 gallons or so, sent in for repair. When I got it back the engione ran for less than one minute, ate the piston and seized. That engine was replaced with a new 58gx2, that I, and several of my friends could never get started . That engine was replaced as well, after 2 visits to horizon service. I no longer own a 58 nor will I ever again in the future.

[adrian]

well i have a 58 and it is the most powerfull engine around the 50cc engines - brake in was long like the 3w engines but once broken in it is a marvel - i think you guys are to hastie and impatient with these engines - we have many flying and not one has had a problem - for the record i have all the other brands DA/ZDZ/3w in 50 cc and only the da had to go back for crank problems(factory re call) - all engines work well if you care to understand them and you treat them as per spec - 90% of all engine problems begin with us!!!! and we all know this.

[3dubya]

LOL well said, too keen to run it lean, .. the mvvs 58s ive seen have been awsome..

[adrian]

too keen to run it lean,

[jaguar bone]

	Quote: Originally Posted by sprice50
	Hello, I was just reading about the 58cc Evolution 58GX. Horizon states 8.5HP, but this seems unreasonable when compared to other major brands out there. I would have thought around 6.5HP for an engine this size. Am I wrong? Also, how heavy a plane could you 3D decently with using this motor and a 24X10 (6,900rpm reported)I am looking for comments from owners of this motor. Thanks,

Shaun, Please don't read this as me being a smart @ss :4: (not my intention!) -but consider this point of reference:
Motors move because of an armature
and
Engines move due to internal combustion.
( I was similarly corrected some time ago)

[wildhare]

	Quote: Originally Posted by crhammond
	But - it is hard to start and cuts out whenever I do a left snap, spin or other high-g left torquing manuvers (no, it's NOT the fuel system.)

Before you send it back (again!) check the little hose from the crankcase to the carb that carries the pressure pulses to drive the diaphragm pump.

This hose gets hard and starts to leak. It causes all sorts of misery and can be replaced in about 5 seconds once you know what the cause is. I went through all the same things and finally found this leakinghose and all my problems with that engine went away.

TF

[adrian]

and i run my 58 on a 171/2 lbs 30%yak - use a bolly 24x10 and the cannister muffler and i really have good power

[crhammond]

	Quote: Originally Posted by wildhare
	Before you send it back (again!) check the little hose from the crankcase to the carb that carries the pressure pulses to drive the diaphragm pump. This hose gets hard and starts to leak. It causes all sorts of misery and can be replaced in about 5 seconds once you know what the cause is. I went through all the same things and finally found this leakinghose and all my problems with that engine went away. TF

Thanks Tom - I will look at that. I had about 8 flights when everything seemed perfect and then it went to hell again. When it runs, it runs very well and makes tons of power.

Chris.

[crhammond]

Also - not to disturb the thread too much and cause flames... but I KNEW someone would say "you guys don't know how to tune and you rushed the break-in." I am the first to admit just about everyone could learn something about tuning and breaking in engines - myself certainly included...

but the Horizon engine techs did find problems and replace parts which made my engine a little better each time. I just wish it took less than 1 month for them to get a carb in (for example.) It's hard to tune a carb when moving the needles doesn't actually do anything.

[ben_beyer]

My biggest complaint with the Evolution was the customer service. I would call them and the only person I could talk to was a customer service rep who just repeated what the mechanic would say. I don't hear anything bad about the MVVS version and people who run the 58 on a canister seem to be pretty happy, but I had a pitts muffler on mine. I just think there are better engines out there than the Evolution 58 and you'd probably be happier going with one of those. Just my $0.02 though.