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> Gas/Glow Engines & Parts > Glow Engines > ASP Glow Engines


ASP FS61AR Four Stroke Glow Engine

ASP FS61AR Four Stroke Glow Engine

Tired of all those electric planes infesting your local club?
If so, then Four-stroke glow powered engines should be ticking all the right boxes! And there is nothing like the smell or sound of a 4-stroke glow powered plane thundering through the sky.

Fly to the sound of your very own 4-stroke glow powered symphony and bully those little electrics off the airstrip with our new range of glow engines!
Full-Featured 4-Stroke Engine
One-Piece Crankcase
Rear-Mounted Updraft Carb w/Choke Valve
Right Side Exhaust
Dual Ball Bearing-Supported Crankshaft and Camshaft
CNC Machined Components
Iron Ringed Aluminum Alloy Piston
RFS (Ringed Four-Stroke) Engine
Overhead "Poppet" Valves with Cover

Displacement: 9.95
Bore: 24.80mm 
Stroke: 20.60mm 
Suggested prop: 11*7
RPM: 2,500 ~ 11,500
Weight: 450g 



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Weight: 784g
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Price  $131.54

  • ASP FS61AR Piston Ring

    Combo Price: $3.80   IN STOCK

  • ASP FS61AR - Piston

    Combo Price: $5.17   BACKORDER

  • ASP FS61AR - Cylinder Head Assembly

    Combo Price: $25.84   IN STOCK

  • ASP FS61AR - Muffler Assy

    Combo Price: $10.60   BACKORDER

  • ASP FS61AR - Cylinder

    Combo Price: $5.76   IN STOCK

  • ASP FS61AR - Carb Assy

    Combo Price: $15.33   IN STOCK

Further discounts available for registered & logged-in customers.
 Customer rated
Total of 128 discussions.
Lawrence  15 points - 5/27/2015
Why is the .52 F.S. 5 gm heavier than the .61?I really would like a slightly smaller version,the 30F.S. is a sweet little motor,perhaps they might become available from H.K.?
Javier  6 points - 5/25/2015
I actually have a os 50 2 strokes mounted on my plane. Could I use this engine or I use better the ASP 91 four strokes engine? Thanks
 Lawrence 15 points
A .50 2 stroke will certainly be a lot faster if speed is what you want.The .61 is a great engine for cruising around in a nice realistic manner,I have a 60 " Ryan s.t.a.which is perfect with the .61F.S.
hamza_b  5 points - 4/16/2015
I have been looking for a Four stroke 70-80 for a long time now and dont understand why Hobbyking doesnt stock them. I need a engine for Seagull models Ultimate-46 with the following specs: * Wingspan: 43 in (109cm) * Wing Area: 589 sq in (38 sq dm) * Flying Weight: 6-7 lbs Can someone please tell me if this engine would be suitable or not for the above model?
 Rcflyyer1 131 points
One of the reasons HobbyKing doesn't stock the 65, 70, and 80 four stroke, is because they are all basically the same engine in a nutshell. The all use the same crankcase and weight in at around 630 grams. The FS91AR weights 640 grams. A 10 gram difference from the others. I was originally planning on purchasing an FS80AR, but I went with the FS91AR and have been very happy with it. For your aircraft, this engine will do fine. Rule of thumb is, divide your aircraft size by two, and add that number to the existing size. 40/2=20, 20 40=60. I estimated your model to be a 40 size since it is the most popular. This engine may not pull unlimited vertical pulls, but it will chug right along.
ian  1 points - 3/27/2015
hi, I have a j3 cub that recommends a 40 size 2 stroke. will this engine work ok in it??
 Gary49 3978 points
It is quite a bit larger than a 40 2 stroke and quite a bit heavier so would not recommend this, a 52 4 stroke should be ok.
 Gary49 3978 points
It is quite a bit larger than a 40 2 stroke and quite a bit heavier so would not recommend this, a 52 4 stroke should be ok.
 petern 104 points
The FS61AR is lighter than the FSR62AR
 Schnozzer 1131 points
Petern is correct here. It makes absolutely no sense to purchase the .52 considering it is slightly less powerfull and is actually heavier than the .61. The rule of thumb when using a four stroke in a model designed for a two stroke is to add 50% to the displacement. So in Ian's case a .40 two stroke plus 50% equals .60. This engine would be perfect for the Cub and would sound much more realistic and also won't have a huge ugly muffler. I run my four strokes inverted without any problems, which can be concealed within the cowl. Plan ahead on your radio and battery installation by moving it farther aft to compensate for the heavier four stroke. You will not be disappointed!
Alvaro  15 points - 3/13/2015
This engine will have enough power to place it in CMPro Zero .50?
 Turbobeaver 1407 points
According to CMP's specs for this plane,the recommended size of engine if it is a 4 stroke is a .50-.63 so yes it will.Larger four strokes like the ASP .70 and .80 would also suffice but with a added weight penalty.More power doesn't mean anything if it inceases wing loading.This detracts from the models slow flight capabilities.In a perfect world,you are looking for the most power out of an engine with the least amount of weight penalty and the plane balances out perfectly without any added extra weight.I hope this helps you some Alvaro.Good Flying!
Customer Reviews
Overall Rating
48 thumbs up!
I bought two of these engines , both started straight away and run perfect even down to a low idle using 10pcnt nitro - plenty of power using a
12 x 6 propeller and economical on fuel.
smooth transition from idle to full throttle.
i am very happy with the motors for the price.

3 comments. Reply..

Overall Rating
27 thumbs up!
This engine is out standing. It started on the first try, no problems. It was pre set from the factory so I didn't need to do a lot of adjusting to it. It's worth the money believe me.

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Overall Rating
15 thumbs up!
Wow! super engine. I use mine in a 40 size low winged trainer. Plenty of power, easy to start and running clean. Would recomend this to anyone! Perfect to use later on a 40 size acro plane too. nice!

3 comments. Reply..

Overall Rating
13 thumbs up!
Great engine , I was suprised how well is runing .I am having it in a Texan .46 and 12x7 prop.
I will buy the .91 too.

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Overall Rating
11 thumbs up!
Great engine - very happy. Make sure you prime it until it is literally soaking in fuel and then it starts easier than any other engine I have come across. With a 500cc fuel tank I get around 15 minutes of mostly full throttle running a little on the rich side with a 11x7 prop.

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