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Sport planes - engine recommendations

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Ron Gray26/05/2018 08:11:57
1259 forum posts
333 photos

The Laser - tech questions thread has got a bit sidetracked with questions about best engine for a make of ‘plane so it has benn suggested that a new thread is created to cover this topic.

So, if you have a sports plane, powered by an IC power plant and you are really happy about the combo, please post on here. Likewise if you are not happy with the combo also post on here too! Weight and size of ‘plane would also be handy.

Bob Cotsford26/05/2018 09:20:59
7683 forum posts
427 photos

It's a bit late for me as my IC models are leaving in a steady trail but here are my thoughts on some good combos that are relevant in terms of currently available airframes:

World Models Super Chipmunk 64" with any generic ASP/SC/Magnum 91 four stroke - a really perfect match for scale aerobatics and a bit more.

Ripmax Wot'sWot ARTF with a Laser 80. The engine is a shade long for the fibreglass cowl so you get a cm of exposed prop driver and it needs a couple of ounces of lead in the tail, but the power and characteristics of the Laser suit the model perfectly. It helps that the engine can go in sidewinder so no tank level problems.

Ripmax Wot4 ARTF with ASP 52 two stroke - nice. Not daft power but more than most people really need, and it fits in the cowl. No lead needed to balance it which is always a bonus.

Ron Gray26/05/2018 09:36:31
1259 forum posts
333 photos

Wots Wot XL and Laser 160v, not unlimited vertical but think of full size Pitts performance and you’re close. Tank needs to be lowered to suit carb position but that is quite easy to achieve if the existing tank platform is cut out. An engine stand off of approximately 25mm will have to be made to move the engine forward. Because the engine is such a ‘cosy’ fit in the cowl, baffles need to be used to force cooling air over the pots.

Ron Gray26/05/2018 11:23:37
1259 forum posts
333 photos

Great Planes U Can Do 60, 65” wingspan, 8lbs weight, powered by Laser 80. Adequate power for all aeros but not necessarily enough for full blown prop hanging.


Percy Verance26/05/2018 11:27:37
7385 forum posts
143 photos

Up until a year or so ago I had a Hangar 9 Pulse XT40, powered by a Saito .62fs pulling an APC 13x6. This (for me) proved to be an excellent combination, having sufficient power to loop from level flight and complete other aeros without issue. I'm a firm believer in not having too large an excess of power, as I prefer my models to fly using their wings, not sheer grunt.

My Laser 100 powered 1/4 scale Cub was also a good one. Again, not having a huge surplus of power meant that you had to fly it rather than simply point it.

Ron Gray26/05/2018 11:32:50
1259 forum posts
333 photos

Great Planes Revolver, 60” wingspan, 7 lb weight, powered by West 52T2 with pipe. Absolute mental performance and quiet!

Great Planes Giant Revolver, 90” wingspan, 19 lb weight, powered by DLE 55ra with canister. Plenty of power and a very good match. Love it!

Martin Harris26/05/2018 13:41:45
8179 forum posts
206 photos

3 very happy marriages come to mind from my hanger...

18 pound 1/4 scale (Premier) Cub with an ASP 160 twin - sounds great and is powered just about right for scale flying.

8 1/2 pound 1/6 scale Airsail Chipmunk with OS52 FS - more than adequate power despite everyone's recommendations for 70 - 90 sized engines in similar models (a Super Chipmunk can benefit from an uprating as per the real thing).

@2m Priory Models Super Nova ("a what?", I hear you say) old fashioned pattern ship - built up Fus, foam wings, designed around a 60ish 2 stroke with an SC120 FS in the front and half a pound of lead in the tail to balance it. Climbs vertically until it bounces off the first asteroid it hits and does some terrific torque related manouevres like Lomcevaks. Who says overpowering is wrong?

P.S. I love the thread title - slip of the finger or deliberate pun?

Edited By Martin Harris on 26/05/2018 13:43:47

Brian Cooper26/05/2018 14:02:49
382 forum posts
17 photos

Black Horse Ultimate bi-plane. 55" wingspan. It just fits in the car fully assembled. Very crisp on the controls and highly aerobatic. Weighs about 10 pounds. Powered by an ASP FS-120. This provides enough power for a lengthy, vertical climb. Bipes soak up power but this engine in this model is a great combination.

Great fun.

asp fs-120_fs_bc.jpg

Jon - Laser Engines26/05/2018 17:27:16
4328 forum posts
159 photos

Hangar 9 pulse 125. Flown with Enya 155, Laser 150 and Laser 155. All were more than sufficient for more or less unlimited performance.

Great planes escapade 61, really nice with a laser 100.

Many moons ago I had the pulse 60 as well and that was fantastic on the small enya 120 that was a bored 90 case. Its performance is about on par with a modern 95-100

Ron Gray26/05/2018 18:18:47
1259 forum posts
333 photos

@Martin - fat finger, but decided to leave it as it seemed appropriate!

Martin Harris26/05/2018 19:46:44
8179 forum posts
206 photos


Richard Wills 226/05/2018 22:45:55
160 forum posts
7 photos

For simple conveniant fun I think my ARTF acrowot with an OS 55AXon an apc 11x6 takes some beating.


If you are after a silly grin combo, I  re engined my Acrowot XL this spring. Used to have an ASP 180 FS on it which was flew great and sounded fantastic but was a little under powered. I put my MOKI 210 which has been sat in a box for a few years on it and now it's mental, love it.


Edited By Richard Wills 2 on 26/05/2018 22:52:10

Jon Laughton27/05/2018 10:51:53
1119 forum posts
100 photos

Sebart 50 series Katana & Sbach both fitted out with IC conversion packs and OS75AX.

Sebart Wind S with OS55AX

AndyD27/05/2018 11:49:16
708 forum posts
503 photos

a bit horses for corses,i was flying my acro wot xl with a NGH 35 a mental set up but great fun but re engine it with a RCGF 26,not the most powerful 26 engine but I'm now loving it,actually flying the plane rather than being pulled round the sky by a big prop/engine combo.another good setup was my original set up on the XL 10s electric but missed the amount of flights I could have in a day.

Jon - Laser Engines14/06/2018 13:58:35
4328 forum posts
159 photos

My turn to ask for suggestions. I have an OS FF240 flat 4 engine that i rebuilt last year after its former owner let it rust solid. After many choice words and some creative engineering i was able to get the engine apart and repair it.

I test flew it in my flying test bench and it seemed to perform fine so it was laid up pending a suitable model.

So, suggestions please for a not to serious fun model that is as inexpensive as possible and can be airworthy in hours not months. The only contender i have currently is the acrowot xl. The wots wot xl would work but its not what im after. If someone had a good condition 2nd hand spacewalker or flybaby that would be ace. A great planes giant super sportster would work too if there is one out there.

Nigel R14/06/2018 14:24:39
2325 forum posts
389 photos

Twist 150 as an alternative to a Wot XL? devil

Denis Watkins14/06/2018 15:23:07
3388 forum posts
151 photos

Look at Steve Webb's, World Models super sports

Go together quickly, and reminiscent of a large Astro Hog

Jon - Laser Engines14/06/2018 15:47:27
4328 forum posts
159 photos

I like the super sports but i think its going to be too small. They are only calling for a 90!

Not sure about the twist, i have flown models like that before and wasnt a fan. Still, its on the list for consideration

Percy Verance14/06/2018 16:06:24
7385 forum posts
143 photos


Steve Webb does a World Models job that looks just like a Cessna. It's big - 1/4 scale size or maybe a tad larger. That might suit the big OS.........

I can't recall the name of the model, but it looks just like a Cessna 150/172.......

Percy Verance14/06/2018 16:07:48
7385 forum posts
143 photos

Oh dear Jon. I just re-read your post. That big model isn't cheap.........

The LMA - or someone who is within the LMA offers a large -ish low wing job which looks a bit Acrowot/Gangster-ish.


Edited By Percy Verance on 14/06/2018 16:10:31

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