acdii

Good, bad, or indifferent? Ineed at least one more engine, have a P-51 that I am building. Forst thought to use a DLE20, but after flying it on another plane, the sound just isnt right for the Stang, so considering a 4 stroke instead, probably a 1.20. The ASP prices are decent, but is the engine decent? Ihave 2 Magnums and both run great. Ihave an OS, that runs great, but needs a starter to get started, the Magnums fire off on a back flip.

jeffie8696

Magnum is made by ASP. However I always caution people to buy them new with a warranty due to inconsistent quality control.
In any event you could look into a used brand name engine from a reputable dealer like Brucercengines.com, he tests every one and grades them accordingly. And he is a heckuva nice guy.

earlwb

I am reluctant to say they are good as someone will show up claiming they are bad or something,
But the last several engines I ran worked quite well though. The engines are pretty good, but there is some risk that the carburetor may have problems.
Now a couple of years ago I ran a couple of .61 four stroke engines and both engines worked Ok, but I needed to slip on a short piece of fuel tubing to stabilize and center needle valve on the engines. The different two stroke engines I ran all worked well and didn't need any tweaking.

mike109

G'day

Firstly, ASP and Magnum engines are made by Sanye in China. They are practically the same. Magnum are made for a US company and ASP is a Sanye brand.

I have had a few and most were fine though I did have one 61 four stroke with a leaking head and a friend had a 70 with the same problem. Both were fixed by simply (and quite cheaply) buying new heads. I did buy a pair of Magnum 30 four strokes to put in a twin but they were so different in performance that I gave up on the idea.

More recently several 91 four strokes have been used at my club. I was helping a friend with one today and it runs extremely well now that I have tuned it and put a decent plug (Enya #3) in it. It also runs perfectly happily inverted and inside a cowl.

Another friend has an ASP 180 which is a real powerhouse in a Sig Four Star 120 built from a kit.

I would be quite happy to buy one. I mostly use Saitos and I have some OS four strokes too but I think the ASP/Magnum engines represent excellent value for money. If you buy ASP from Just Engines in the UK or Magnum from a reputable dealer in the USA, you should have no problem should you need warranty service. Here in Australia, things are more fluid as most are imported by small importers and sold on a certain auction site or imported very cheaply from Hong Kong by the end users. Parts from Hong Kong are very cheap (when available) and Just Engines seems to have most parts but at a higher cost.

One thing I will say is that they do need some running-in AND they do like some castor oil in their fuel mix. The quality of the machining is good but not up to OS or Saito standards. A nice slobbering rich first couple of runs will wash out any little bits that should not be in there. You can see them on your finger if you put it near the exhaust outlet (not too close though or you may get burned). I have found it necessary on a couple of engines to open the low speed needle a little to get the engine to run rich enough initially. The initial settings of the carbys are a bit of a lottery.

Cheers

Mike in Oz

Sport_Pilot

Poor quality but cheap.  Buy four keep the best, sell the rest.  Then you will have a good one.

jaka

Hi!
All the .40 engines I have seen are very good quality! One of the most powerful .40 engines on the market.

blw

My Feedback: (3)

I think most of the problems are lousy fit issues. Even OS has to semi fit their parts on the line. Magnum and ASP seem to just assemble engines without any attention spent to a few minutes of hand fitting/measuring parts.

W8YE gave me an older ASP 40 that is in very good condition. I talked to Just Engines and there are no parts for it anymore. Jim said it will be the most powerful 40 I've run when I get it on the stand.

Evolution glow engines are also Sanye made. They don't have those problems for the most part.

jeffie8696

Being that Evo engines are a very different design, at leas externally as far as I can see, I wonder if they are being held to a higher standard. SIG used to do the same thing with their ARFs until the chinese company got tired of being held accountable and flaked.

acdii

I have a Magnum 52 and a 91, both new, and both run really good. I heard elsewhere they were from the same company, but wasn't sure. In any case, sounds like if I find one I like for a decent price I should be happy with it.  Both Magnums are back flip started now after a 45 minute run in period.  The OS 52 I have. fogetaboutit, must use starter on it.

I need one for my Mustang, and a 120 would probably scoot it around nicely.

fiery

My Feedback: (2)

Love my ASP's.

I have had junker ASP's.

There is a lot I could say but it's hearsay.

Suffice to say the ASP's sold by World Engines and ISC were better than the product sold in Australia in the early 90's.

The first Issue ASP 40's (separate front housing) which looked similar to the OS .40 FSR (but are not a copy) are great .40 engines, as are the current .40's.

jeffie8696

Iunderstand Magnum Pro 45s are powerhouses. Bruce has a few.

Sport_Pilot

Magnum Pro was made by Thunder Tigre not Sanye.

jeffie8696

I was referring to OS40FSR copies.

Altered1

I like my .52..... a cheap engine, carby can be a bi funky, but a powerful engine for the size and $

[email protected]

My Feedback: (1)

I BOUGHT 2 ASP 61 SIZE AT A SWAP BRAND NEW VERY GOOD ENGINES PAID 50.00 FOR EACH>

brown2x2

My Feedback: (35)

I had a ASP 90. never again,ever-ever. Hard to start run than die. [:@][:@][:@]... Ys or Rossi.

jaka

Hi!
You probably used too much nitro!

hsukaria

I have a Magnum 52 4-stroke. It starts very easy, good throttle response, but doesn't seem powerful enough compared to what I was expecting.

lopflyers

My Feedback: (12)

I bought an used plane and it has a 91. Few problems with the valves but after adjusting them it is running very good, powerful and good iddle.

jeffie8696

Thunder Tiger Baby !! http://www.youtube.com/watch?v=h4c034X04cc

skypiratescotty

My Feedback: (32)

I just got a brand new ASP 61FS from Hobby King for $107 delivered to my door. It took about a week to ten days from time I ordered it and I think I used like $4 of bonus points. It's on the test stand running as I type this. I have just ran it for 45 minutes, in 5 minute increments sloppy rich to break it in. Let it run for 5 min then cool for 30 min. I am using a starter but I don't care if it flip starts or not. So far I'm very happy with it. 45 minutes of run time on about 15-16 ozs fuel at about 1/2 throttle. Even running really rich it has a decent idle so I can only imagine it will get better as I fine tune the needles.

I guess from what I've read it's take your chances but alot of guys at my club fly Magnums and ASP's cuase most of us can't afford the big name ones and all ours fly just fine!!

Scotty

RCVFR

My Feedback: (7)

My ASP 61FS is mounted on a float plane. It has never let me down.

acdii

Good the hear all the positives on the ASP. Just like the Magnums, read so many negatives, but the ones I have run very good.  One thing I did have an issue with, and thankfully caught it on the ground. The screw for the throttle barrel came loose on the 52.  I was adjusting the servo and noticed it ran sloppy, then as I looked I saw the throttle barrel bouncing around, and said, now that's not right. Stopped the engine sn found the loose screw. Put a drop of loctite on it, snugged it up, and its been fine ever since.

drdoom

My Feedback: (9)

ASP .160 twin Is a very good little engine. I'm surprised how well it runs.

jeffie8696

My Mag52FS is OK, not as refined as my Saitos , or OSessss, or Thunder Tiger, but useable.