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Engine ST .11 Empty Engine ST .11

Post  MauricioB Thu Nov 24, 2016 9:45 pm

Hi, I am using you to know if you can give me information about this engine.
It is a ST. 11 made in Italy, I do not have a manual, if someone has the manual and can share it I will be very grateful.
I need to know which fuel is ideal, which I use or recommend.
Which propeller is ideal?
The engine was never started. Thank you very much for the information you can give me.

Engine ST .11 Foto1113
Engine ST .11 Foto1114
Engine ST .11 Foto1115
Engine ST .11 Foto1116
Engine ST .11 Foto1117
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Post  OVERLORD Fri Nov 25, 2016 12:35 am

Mauricio,

An article about Super Tigre:

http://sceptreflight.net/Model%20Engine%20Tests/ST%20X.11-PB%20RC.html

What are your plans for the engine?
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Post  Surfer_kris Fri Nov 25, 2016 1:16 am

I have a few of them. Unfortunately the blue head one is their first version and it doesn't run very well in my experience. The compression ratio seemed very low and it would only run on large props. The later engines are better and better, peaking with their final ballbearing version.

You may notice that the engine "review" (linked above) hasn't actually run the engine (!), or at least they don't tell you about it...
My guess is that they where not impressed and didn't post the numbers in order to stay friend with ST.

If you do run it use plenty of castor in the fuel, 20-25% all castor, and use the carb restrictor if you have it. Otherwise you can make your own split tube to insert inside the barrel. The opening in the stock barrel is far too large to allow proper running, and all the the later models came with such a restrictor.

Here are few of the different versions:

Engine ST .11 Img_1710

Engine ST .11 Img_1512

Engine ST .11 Img_1511
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Post  Surfer_kris Fri Nov 25, 2016 6:04 am

In order to provide some numbers, rather than just an impression of the performance here are some numbers on the Blue head engine and the later plain head engine (still plain bearing):

Blue head; APC 7x4 prop 14000rpm
Plain head; APC 7x4 prop 16800rpm

This was with 20% castor and 10% nitro fuel. As a comparison, an OS .10 FP will make about 15800rpm on the same prop and fuel.

Here is also a picture of my trusted plane (a "stick" style) that has seen most of my .10-.12 engines, the ST is the best thus far;

Engine ST .11 Img_1711
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Post  MauricioB Fri Nov 25, 2016 9:11 am

@OVERLORD wrote:Mauricio,

An article about Super Tigre:

http://sceptreflight.net/Model%20Engine%20Tests/ST%20X.11-PB%20RC.html

What are your plans for the engine?

Hello, many thanks for such valuable information, when I go to give it march, all this will be very useful.
I do not have a model planned for the engine, which I would agree would be ideal for this engine ??, do you have any proposal or alternative models?
Thank you!.... Wink
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Post  MauricioB Fri Nov 25, 2016 9:15 am

@Surfer_kris wrote:I have a few of them. Unfortunately the blue head one is their first version and it doesn't run very well in my experience. The compression ratio seemed very low and it would only run on large props. The later engines are better and better, peaking with their final ballbearing version.

You may notice that the engine "review" (linked above) hasn't actually run the engine (!), or at least they don't tell you about it...
My guess is that they where not impressed and didn't post the numbers in order to stay friend with ST.

If you do run it use plenty of castor in the fuel, 20-25% all castor, and use the carb restrictor if you have it. Otherwise you can make your own split tube to insert inside the barrel. The opening in the stock barrel is far too large to allow proper running, and all the the later models came with such a restrictor.

Here are few of the different versions:

Engine ST .11 Img_1710

Engine ST .11 Img_1512

Engine ST .11 Img_1511

Hi, how are you? Again, helping me, thank you for your time.
It is very important all his experience, which I value very much. This engine was a buying opportunity and I decided not to let it escape, as they are not seen habitually. I do not have a model intended for him, but what would be the model indicated ?, or at least what type of model would be appropriate for this engine?
Thank you thank you thank you!
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Post  OVERLORD Fri Nov 25, 2016 9:57 am

@MauricioB wrote:
@OVERLORD wrote:Mauricio,

An article about Super Tigre:

http://sceptreflight.net/Model%20Engine%20Tests/ST%20X.11-PB%20RC.html

What are your plans for the engine?

Hello, many thanks for such valuable information, when I go to give it march, all this will be very useful.
I do not have a model planned for the engine, which I would agree would be ideal for this engine ??, do you have any proposal or alternative models?
Thank you!.... Wink

Engine ST .11 Dumas_10
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Post  Surfer_kris Fri Nov 25, 2016 11:59 am

@MauricioB wrote: I do not have a model intended for him, but what would be the model indicated ?, or at least what type of model would be appropriate for this engine?
Thank you thank you thank you!

It depends on what type of flying you want to do. Personally I really like the "Stick" or "Ugly stick" styles for everyday sport flying. Here is an image showing the whole plane;

Engine ST .11 Zx715010

And another in similar style:

Engine ST .11 Img_6010

A good size is a wing span of about 85-95cm, and a total weight around 550-650grams.
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Post  MauricioB Fri Nov 25, 2016 3:31 pm

@OVERLORD wrote:
@MauricioB wrote:
@OVERLORD wrote:Mauricio,

An article about Super Tigre:

http://sceptreflight.net/Model%20Engine%20Tests/ST%20X.11-PB%20RC.html

What are your plans for the engine?

Hello, many thanks for such valuable information, when I go to give it march, all this will be very useful.
I do not have a model planned for the engine, which I would agree would be ideal for this engine ??, do you have any proposal or alternative models?
Thank you!.... Wink

Engine ST .11 Dumas_10

Thanks, what happens is that my taste is for the planes! .... anyway thank you again for the suggestion! Very Happy
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Post  MauricioB Fri Nov 25, 2016 3:39 pm

@Surfer_kris wrote:
@MauricioB wrote: I do not have a model intended for him, but what would be the model indicated ?, or at least what type of model would be appropriate for this engine?
Thank you thank you thank you!

It depends on what type of flying you want to do. Personally I really like the "Stick" or "Ugly stick" styles for everyday sport flying. Here is an image showing the whole plane;

Engine ST .11 Zx715010

And another in similar style:

Engine ST .11 Img_6010

A good size is a wing span of about 85-95cm, and a total weight around 550-650grams.

A long time ago I build a Falcon Jr, it will be very small this model for the ST .11? .... it is possible that some model like this could work. This one I show you even owns 4 channels with a Dragonfly .049...Span: 37"



Engine ST .11 Dsc00311
Engine ST .11 Dsc00312


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Post  MauricioB Fri Nov 25, 2016 9:49 pm

I was thinking that if the Enya 09 IV can carry the Mustang P51 well, a model like that could also be a candidate for the ST .11 ... right?

Enya 09 IV KYOSHO
Engine ST .11 Img_1011
Enya 09 IV KYOSHO
Engine ST .11 Img_1010

Possible Candidate for ST .11
Engine ST .11 Foto1118
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Post  Surfer_kris Sat Nov 26, 2016 7:50 am

If I remember correctly that plane barely flew on the Enya .09, and it is better suited for a strong .15 engine.

I think you would be much better of with something old-school, like the Falcon. Perhaps an enlarge version if you still have the drawing?

The Blue head engine seemed quite happy on larger props, most likely related to the low compression ratio, I even ran a Graupner 7.5x5 prop on it without any problems.
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Post  MauricioB Sat Nov 26, 2016 11:33 am

@Surfer_kris wrote:If I remember correctly that plane barely flew on the Enya .09, and it is better suited for a strong .15 engine.

I think you would be much better of with something old-school, like the Falcon. Perhaps an enlarge version if you still have the drawing?

The Blue head engine seemed quite happy on larger props, most likely related to the low compression ratio, I even ran a Graupner 7.5x5 prop on it without any problems.

OK! Then I'm going to pause with ST. 11 and I'll see which model I decide on in time, meanwhile I'll be working on other projects that we will surely share experiences!
This engine, the ST .11, was manual? Instructions ?, because the one that I have does not have any operation paper, if there is some place to print the manual ?, I would like to keep it with the factory instructions if possible, just to complete the set.
Thank you!
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Post  Surfer_kris Sat Nov 26, 2016 12:36 pm

I can try to scan it at work perhaps later in the week, but here some photos in the mean time.
There is nothing "new" in the manual I would say though...

The prop size recommendation is good to have, you can see that these engines don't like small props.

(For the later BB version they recommended to use a 7x4 as max, and they are a completely different engines.)

Engine ST .11 Img_0013

Engine ST .11 Img_0014
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Post  MauricioB Sun Nov 27, 2016 9:20 pm

Thanks for all your time and willingness to help me, I would be very useful the manual if you scan it and send it to me, I would complete the set of engine parts. Thanks again for all your time. Do you want me to leave you an email address where you can send the scanned manual?
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Post  Surfer_kris Mon Nov 28, 2016 4:34 am

If you give me your email address via the personal message service here, I can send you a pdf file directly.

(I don't think that it is possible to post pdf files on the forum, only jpg etc)
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Post  MauricioB Mon Nov 28, 2016 9:11 am

@Surfer_kris wrote:If you give me your email address via the personal message service here, I can send you a pdf file directly.

(I don't think that it is possible to post pdf files on the forum, only jpg etc)

No problem !, now I'm sending a private message, thanks again! Thumbs Up
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Post  Surfer_kris Tue Nov 29, 2016 3:46 am

You have mail...
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Post  MauricioB Tue Nov 29, 2016 5:56 am

@Surfer_kris wrote:You have mail...

Hello .... received and answered, thank you!
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