Engine choice dilemma
#1
Thread Starter

My Feedback: (7)
I have a Swallow EX-90 That i am going to put together this spring. That plane calls for a .91 4s. Most put in a 100 or bigger. I didnt want to spend a lot on a engine so my question is what would be a good alternative 2s inexpensive, and what size, I was thinking about Buying used on here or that other place.
#5
Thread Starter

My Feedback: (7)
Now I am getting picky. I had a bad experience with Super Tigre engines. Hard to tune and flame outs. Don't know if I had a lemon or how to tune, But that one engine turned me off on super tigre engines. I am wanting to know if a .61 2s is a = to a .91 4s on this plane or do I need a bigger 2s like a .75 or .90 2s.
I am mostly just a sport flier and that is what this plane will be used as. Just something a little more "snappy" to take to the field when I am in the mood.
I am mostly just a sport flier and that is what this plane will be used as. Just something a little more "snappy" to take to the field when I am in the mood.
#6
Senior Member
My Feedback: (264)
Really......... I had a ST g-90 on my delta vortex and flew it for a few seasons, it was 100% reliable, and would hand start easily.
If you are looking for a 2-stroke engine to match the performance of a saito 100 or 115, don't get anything less than a .90
I really don't think a .61 2-st = .91 4-st in the real world. I had a 4 star 60 and swaped a .61fsr and ST S-61 against a .91 surpass to compare performance and the surpass was head and shoulders above the other two engines in power. I think a .70 surpass would have been a more even match in performance.
If you are looking for a 2-stroke engine to match the performance of a saito 100 or 115, don't get anything less than a .90
I really don't think a .61 2-st = .91 4-st in the real world. I had a 4 star 60 and swaped a .61fsr and ST S-61 against a .91 surpass to compare performance and the surpass was head and shoulders above the other two engines in power. I think a .70 surpass would have been a more even match in performance.
#9
Hobby People had Magnum .91 2 strokes on sale last week...don't know if they're still on sale...IIRC they were $99.99?
Edit: Yep...they are:
http://www.hobbypeople.net/gallery/210806.asp
Edit: Yep...they are:
http://www.hobbypeople.net/gallery/210806.asp
#10
Senior Member
For the best engine offer available all year around, take a look here: http://www.himodel.com/sort.php?sub2=CH
The ASP/Magnum .91 is 110$ but the SK 90 is only 66$[X(]
You could also use the SK 130 at only 87$
Doesn`t get any cheaper than this.
I have the SK .50 myself and it runs fine and have about normal power for it`s size. The SK .90 has been reported to be very good too, by someone in here. Xjet I think??[sm=50_50.gif]
I think you`ll want a .90 twostroke to be the minimum in this plane to be satisfied. A quick google rewiles that many use 120 fourstrokes on this plane.
The ASP/Magnum .91 is 110$ but the SK 90 is only 66$[X(]
You could also use the SK 130 at only 87$
Doesn`t get any cheaper than this.
I have the SK .50 myself and it runs fine and have about normal power for it`s size. The SK .90 has been reported to be very good too, by someone in here. Xjet I think??[sm=50_50.gif]
I think you`ll want a .90 twostroke to be the minimum in this plane to be satisfied. A quick google rewiles that many use 120 fourstrokes on this plane.
#11

Joined: Jun 2006
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From: Cincinnati,
OH
ORIGINAL: proptop
Hobby People had Magnum .91 2 strokes on sale last week...don't know if they're still on sale...IIRC they were $99.99?
Edit: Yep...they are:
http://www.hobbypeople.net/gallery/210806.asp
Hobby People had Magnum .91 2 strokes on sale last week...don't know if they're still on sale...IIRC they were $99.99?
Edit: Yep...they are:
http://www.hobbypeople.net/gallery/210806.asp
This one has my vote!
I've got one of these that is an absolute gem!
#12

Joined: Jun 2006
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From: Cincinnati,
OH
ORIGINAL: Flyboy Dave
....I second the ASP .90, a real good engine for little money. Good power.
FBD.
....I second the ASP .90, a real good engine for little money. Good power.

FBD.
One and the same, except for the name on the side.
#13
Thread Starter

My Feedback: (7)
ORIGINAL: Ken6PPC
ASP = Magnum
One and the same, except for the name on the side.
ORIGINAL: Flyboy Dave
....I second the ASP .90, a real good engine for little money. Good power.
FBD.
....I second the ASP .90, a real good engine for little money. Good power.

FBD.
One and the same, except for the name on the side.
Also have a Magnum .46 in a Jr falcon again a flawless engine.





