ASP four-stroke engines (please state size)

MikeS wrote on 27/03/2013:

Strengths: Good engine for the price and great support.

Weaknesses: None I can think of

Overall: Great engines, my 70 fs pulls my Pawnne around and is yet to dead stick on me. Easy to run in and setup. Easy to take apart and replace parts should have the need.

The Gineral wrote on 12/07/2012:

Strengths: starting

Weaknesses: none yet after 5 hours

Overall: great little engine.good value for money-a little down on power.

Gary Eyre wrote on 28/06/2012:

Strengths: good value

Weaknesses: nil

Overall: would recommend

Steve Hargreaves - Moderator wrote on 22/06/2012:

Strengths: ASP61 & ASP70 Good quality, well built. Easy to start & very reliable. Low price

Weaknesses: Maybe not quite up to OS standards but not so far behind as the price difference might suggest

Overall: Great engines. They do everything an engine should at a bargain price. The ASP61 is actually a big bore 52 & shares the 52's crank case. Useful if your 52 sized model needs a bit of extra oomph

Dennis Jones wrote on 16/05/2012:

Strengths: Good cheap reliable

Weaknesses: none

Overall: I have the 61 91 120 160 180, all run great hardly use fuel, mine all came from Just Engines so the back up service is great,they are so reliable almost a fit and forget engine

Martin Harris wrote on 01/11/2011:

Strengths: Smooooooothest engine ever! Good performance Easy starting

Weaknesses: Rather sensitive on the main needle - but this may relate to back pressure from my very effective home made siamesed (or should that be conjoined?) silencing system

Overall: I'm running this engine in a 1/4 scale Cub using a "scale" 18 x 6 prop which it suits ideally. A few intermittent "problems" were traced to a dodgy throttle servo and so I can now say that it has behaved impeccably. It is an obvious copy of the OS Gemini and time will tell for its longevity but so far I would recommend it with absolutely no reservations. I'm just waiting for the day that ASP/SC produce a Pegasus copy!

Reno Racer wrote on 24/10/2011:

Strengths: Great quality and super reliability and a fantatsic price. I have the ASP 61 FS and 91FS, both run like an old sewing machine, once properly broken in, I've never had an issue, Both 61 and 91 deliver good power. My 61 hits 10500 rpm on a 12x6 MA and 91 delivers 9750 on a 13x6 3 blade MA (9Lbs static thrust).

Weaknesses: Can be a bit leaky, so check all bolts on carb, rocker cover etc.

Overall: My 2 best and favorite models (Pulse XT 40 and H9 Corsair)- I trust both to an ASP 4 stroke without issue.

Les Littleton wrote on 26/07/2011:

Strengths: easy starting and very reliable

Weaknesses: none so far

Overall: Very pleased with this engine from day one . fitted in pc9 in dec 09 and very well flown without one dead stick , great little engine

Bob Cotsford wrote on 20/07/2011:

Strengths: Easy starters, good idle, all three engines I have produce the same rpm within 100 of 8,700 on a 15*8 prop. The quality seems to be consistent across the three units which were bought over a period of years.

Weaknesses: none so far

Overall: Good value, maybe not as powerful as OS or Saito, but a good deal cheaper to buy

Lee Smalley wrote on 30/09/2010:

Strengths: starts very easy

Weaknesses: casting quality, but its inside a cowl so who cares

Overall: really good price for a very reliable if not the most powerful engine in the world

Biggestgerbil wrote on 30/09/2010:

Strengths: Always starts easily, economical.

Weaknesses: Slightly heavier than some others in class

Overall: With Just Engines after sales service to back them up this range of engies is a winner. All my ASP FS start easily and run well. Have been using them for about five years since I was given an old 52FS with no compression. It is in a Super 60 and stills does the buisness.

Colin Leighfield wrote on 06/12/2008:

Strengths: Easy to start, controllable and reliable over the whole rpm range, very well made.

Weaknesses: Haven't found any.

Overall: Not expensive for what it is and does everything I want.

Djay wrote on 03/12/2008:

Strengths: Reliability, fuel economy, price,

Weaknesses: Box was to small for the engine, so looked cheap upon arrival.

Overall: Ran straight out of the box and has not missed a beat flying my Hannibal in 50 degress c heat . Hardly uses any fuel, sounds fantastic. true value for money

YakMad wrote on 24/09/2007:

Strengths: Starts and runs well and fuel efficent for it size. Will turn big props.

Weaknesses: Not really a performance engine more suited to a scale model rather than aerobatic, alot of vibration

Overall: Good value for scale models look elsewhere for performance.