My Super Tigre .40 has about had it. It is on a H9 Ultra Stick. I want to replace Super Tigre, but like most, I want to replace it with something a little bigger. I would like for it to still fit the size .40 engine mounts if possible. I am willing to spend up to $120 if I need to.

Any suggestions?

Jason

My suggestion would be the Irvine .53 but I doubt seriously if it would just sit where the ST .40 was, a Super Tigre .51 might, and it is a great engine. You should be able to get the ST .51 or an Enya .50 CX for about $109.00. I guess I suggested three engines, hope that's OK.

Not sure but it think the standard mount onthe ultra will take most 46's and 50 somthings. even if it does fit, it might be a good idea to replace the metal mount with a Dave broun plastic mount. they save about 3 ounces, and allow you to mount he motor further back, so you have a chance to ballance with less lead in the tail too. The Irvine 53 is my favorite.

Go with the Irvine mounted horizontally with the pipe between the legs. You'll love it.

Based on my experience with an Ivine .39, the Irvine .53 would be my first choice. 2nd choice would be an OS 46FX. This engine starts first time for me with a simple flick...

"mounted horizontally with the pipe between the legs" ??

Don't forget Tower 46.

How about a Saito 72. I have one on my Morris Knife and love this little engine. Runs like a champ, and starts so easy. It's a prime and one back flip engine. I run mine on 15% and is has gobs of power. I think it would be a great engine on the H9 Ultra stick, and it won't ring your ears! hehe Nice and peaceful sounding engine. I like flying my Knife just before Dark...I go out and fly my big gassers for practice during the day, and then bring out the Knife in the late afternoon and evening and it's so nice and quiet and it's a fun plane too. I've also flown the Ultra stick and those are really fun also...I like doing crow landings with those...it's fun letting one of those just crawl in and throttling it to whatever spot you pick to land it. I think it would be a really fun plane with the Saito and the power would be a blast too. With the bigger prop it would make for even slower landings, and control authority would be increased.

He is limited to $120 bucks.

On the 4 stroke note, there are a couple of sellers on ebay that sell ASP engines....
I got an ASP 52 for $99 a while back....

Thanks for all of the ideas. Anything else I should consider?

Jason

Since you live in Arkansas you might consider a Fox .46, I would love to have engine made here in Va. The Fox .46 is as powerful or more so than many engines in its class. Mine are totally reliable.

Fox really gets ragged on in our area. No one will buy one, so most shops don't carry them. However, I have never had one or even seen one.

Jason

They only only get ragged by guys who don't read instructions well or simply can't set up and run engines.

Some say the same thing about my Super Tigre. I agree, It can be finicky until you have it setup right. All in all, I have been impress by the power of my Super Tigre. In fact, I have been running a bigger prop on it than the instructions say, but it has handled it like a champ and given me the performance I was after. But, now I want more .

Jason

Hmmm you hear statements like this a lot on RCU, but most of the time the person saying it knows nothing about the person he acuses of this. if you hear conflicting statements about a particular engine, it is far more likely the company has quality control problems, than the person writing a post, cant read. besides, some of the instructions even from the most reputable companies are flawed. OS for example wants you to break in engines sopping rich and cold for several minutes, almost everyone who has been around for more than a week agrees this is not a smart thing to do. question everything you read, there is always some complicating factor, unrealistic expectations littel real experience, quality control problems, there is always somthing limiting the view of the person writting, except my posts of course!


another thought, you almost never run into anyone complaining about an Irvine, Obviously irvine owners ae better readers! LOL!

Don't forget the Thunder Tiger Pro 46. Great engine and power for well under 100 bucks. Pete

I haven't really heard anything bad about Irvin except the price and the weight to power ratio. It does seem to be a quality engine by most peoples standards.

How about an OS .46FX? The specs look great, and I have at least seen this motor in action.

Jason

Here we go again..... this price thing is a fallacy, people getting confused over SIG putting two prices on their website. Look at the dealer network prices and ignore the factory direct prices. Look at the price of the 4*60 on the SIG web site to see what I mean...

You can get an Irvine 53 for under $120, the OS 50 costs over $150 and its not as powerful....

The OS46FX is a good reliable engine, there are several US 40's at my club all with 46FX's. Mine starts on the first flick.

I've got an Irvine 39 and I've tached it against my 46LA & 46FX. Powerwise its between the two but not far behind the FX. The 53 should power the US like a rocket

Anyone have factory specs for the Irvin .53 so that I can compare it to the OS .46 factory specs? Size, weight, power, etc.

Jason

No one with the spec on the Irvin .53? Any place on line I can look?

Jason

Ummm, I thought OS engine are ABN not ABC. I followed their instructions and my FX runs fine. The Irvine, however, is ABC and needs to get up to temperature quickly. This is pointed out in their instructions.
OS owners are lucky and spoilt. In most cases, their engines run well right out of the box with virtually no tweeking needed. I compared the instruction manuals for their LA and FX engines and found that in the LA book they go into great detail about how to set the low end. In the FX book, this section was missing! I know the FX has a needle instead of the air bleed but there is no equivalent section on adjusting it. The engine diagram doesn't even tell you where the low end needle is!

I think Irvine owners are just more knowledgable about engines. This partly shows in that you have to go to some effort just to aquire one. My Irvine needed a fair amount of tweeking of the low end needle to run just right but I'm not complaining becauase its a quality motor....

Hobbsy, what are you on? Can I have some?

Bugleboy, Look at www.sigmfg.com

Triggerinva,

ABN an ABC engines are broken in the same way. They both have a tapered bore and require a hot, rich two-cycle break-in.

They must not be broken-in slobbering, four-cycle rich.

Thanks,
Jason

Apparently a post got deleted. there are a lot of jabs that go on, most in good fun, others go too far and get deleted.