mightypeesh Posted June 18, 2020 Share Posted June 18, 2020 Hi folks. The la.65 that I have fitted in my Acrowot has finally waved the white flag and gone to the great scrap yard in the sky. The recommended engine range for the model is from .40 up, and I just happen to have an OS la.40 on the shelf and don't really want to spend any money unduly at the moment on another engine. The thing is........ it does not look man enough with its little 11" prop when I hold it up next to the plane! I know it won't be as powerful as the 65 (which I always thought was far more than it needed anyway) but will the .40 have enough go for basic club flying as it is in the recommended range? Many thanks for your thoughts Simon Quote Link to comment Share on other sites More sharing options...
Jon H Posted June 18, 2020 Share Posted June 18, 2020 I flew a kit built acrowot on a 40la many moons ago. It didnt set the world alight but it flew fine. Once you get used to flying with a little more thought to momentum and energy retention you will probably forget all about the reduction in power. Quote Link to comment Share on other sites More sharing options...
John Stainforth Posted June 18, 2020 Share Posted June 18, 2020 There are 40's and 40's. e.g., the OS 46AX seems to produce about twice as much as power as the 46LA. Quote Link to comment Share on other sites More sharing options...
Nigel R Posted June 18, 2020 Share Posted June 18, 2020 The 40LA is fairly anemic. I would personally look for something else. What's wrong with the 65? The LAs are straightforward motors with not that much to go wrong on them. Quote Link to comment Share on other sites More sharing options...
Paul Marsh Posted June 18, 2020 Share Posted June 18, 2020 I've got a good stash of engines, and can choose what goes into the next model. A LA 40 would be boring, need lead in the nose. Buy another engine, a AX46, help support the modeling trade and give it what it deserves. What's wrong with the 65LA? Quote Link to comment Share on other sites More sharing options...
brokenenglish Posted June 18, 2020 Share Posted June 18, 2020 I'm flying an Acrowot artf with an Irvine 53 purchased new on eBay. It's perfect. Loads of power! Quote Link to comment Share on other sites More sharing options...
mightypeesh Posted June 18, 2020 Author Share Posted June 18, 2020 Hi chaps, Thanks for all the replies. sounds like I need a 46 at least then! The 65 has been going for many years, and was very well used when it came to me in the first place (along with the airframe) - and it always started and run fine. Now it has developed a noise like a handful of gravel or two rattling around inside after cutting on me a couple of times. I don't have a lot of spare money at the moment so was hoping to utilise what I have to keep her in the air until things improve. I will keep an eye on ebay and see what comes up. cheers, Simon Quote Link to comment Share on other sites More sharing options...
Robert Welford Posted June 18, 2020 Share Posted June 18, 2020 I have an ARTF Acro Wot with a Laser 80. However, I would recommend using an Irvine 53 or an OS 55 AX. Both are fantastic engines and are the same size as 46 engines. Available on ebay, or BMFA ads, for reasonable money. Edited By Robert Welford on 18/06/2020 16:54:49 Quote Link to comment Share on other sites More sharing options...
cymaz Posted June 18, 2020 Share Posted June 18, 2020 Posted by mightypeesh on 18/06/2020 15:05:01: Hi chaps, Thanks for all the replies. sounds like I need a 46 at least then! The 65 has been going for many years, and was very well used when it came to me in the first place (along with the airframe) - and it always started and run fine. Now it has developed a noise like a handful of gravel or two rattling around inside after cutting on me a couple of times. I don't have a lot of spare money at the moment so was hoping to utilise what I have to keep her in the air until things improve. I will keep an eye on ebay and see what comes up. cheers, Simon Take it to bits and see what might be making the noise. If it’s bearings then the replacement cost is a few pounds. If the engine is dead , you can’t break it any more than it is. Open it up and have a peek. Quote Link to comment Share on other sites More sharing options...
Paul Marsh Posted June 18, 2020 Share Posted June 18, 2020 The La are plain bearings, and are only bronze. Quote Link to comment Share on other sites More sharing options...
cymaz Posted June 18, 2020 Share Posted June 18, 2020 My mistake, got mixed up with talk of Ax’s. Quote Link to comment Share on other sites More sharing options...
paul d Posted June 18, 2020 Share Posted June 18, 2020 I agree with cymaz, have a look inside before scrapping it, you may well able to give it a new lease of life for a few pounds. Quote Link to comment Share on other sites More sharing options...
Chris Walby Posted June 18, 2020 Share Posted June 18, 2020 I have a Laser 70 in my Acrowot and highly recommend the combination. No major modifications, no lead and C of G spot on + flies and sounds really nice. PS Was there not an issue with LA (46's so assume other sizes) where the plastic engine case leaks causing poor performance? Worth a check first. Quote Link to comment Share on other sites More sharing options...
mightypeesh Posted June 18, 2020 Author Share Posted June 18, 2020 Ok gents, good idea. I will have a bit of a strip-down tomorrow and see if any thing obvious is going on with it. It is probably a good simple engine to get to grips with servicing on. I will report back to the experts once I have had a look. Cheers, Simon Quote Link to comment Share on other sites More sharing options...
Robin Colbourne Posted June 18, 2020 Share Posted June 18, 2020 Simon, As buying new glow engines means you are finishing in a small and ever diminishing pond, how about seeing if someone has a useable one they would loan or sell on approval? If you are in a club, try asking around to see if anyone has an engine they don't use anymore. If you were happy with the performance of the 65LA, then most ballraced .50 to .60 size engines should be a comparable replacement. Edited By Robin Colbourne on 18/06/2020 22:34:56 Quote Link to comment Share on other sites More sharing options...
Paul Marsh Posted June 19, 2020 Share Posted June 19, 2020 I have 2 brand new LA65's and two 60FP spare, plus 3 other 65's in models. Good about going to Swapmeets, get a good stock up in events like this... Edited By Paul Marsh on 19/06/2020 09:54:58 Quote Link to comment Share on other sites More sharing options...
J D 8 Posted June 19, 2020 Share Posted June 19, 2020 With a plain bearing engine like the LA range check the fit of the crank shaft in the bush's. What can happen is the bush wears at one or both ends so the shaft will wobble and if the case probably not worth a repair. Quote Link to comment Share on other sites More sharing options...
Cuban8 Posted June 19, 2020 Share Posted June 19, 2020 An Acrowot (kit built ?) with a 40LA !!!!!!! ......................Rice pudding - skin - unable to pull off............... I'd be looking for something much less pedestrian than the LA range for an Acrowot (the 65 at a push). Acrowots don't require huge amounts of power to fly nicely, but to underpower them completely destroys their character, makes them harder work to fly (used to fly my Acrowot in any gale with a decent OS 61) and it's nice to be able to open the taps a bit from time to time. Quote Link to comment Share on other sites More sharing options...
Paul Marsh Posted June 20, 2020 Share Posted June 20, 2020 Pick an engine, any engine... Quote Link to comment Share on other sites More sharing options...
cymaz Posted June 20, 2020 Share Posted June 20, 2020 Posted by Paul Marsh on 20/06/2020 17:56:33: Pick an engine, any engine... Wow! I’ll have that one there Quote Link to comment Share on other sites More sharing options...
Keith Berriman Posted June 20, 2020 Share Posted June 20, 2020 Just the one ?? how about buy two get one free ?? Quote Link to comment Share on other sites More sharing options...
kc Posted June 20, 2020 Share Posted June 20, 2020 Looks like Paul should start building planes to fit those engines! I often wonder whether anyone will ever collect electric motors........ Quote Link to comment Share on other sites More sharing options...
Chris Walby Posted June 20, 2020 Share Posted June 20, 2020 The age of ic is dead, (smallish 2 stroke), proof? While building my Extra Slim Twin from a Cougar 2000 that was given to me with a OS LA 46 in it (sold the airframe on), was given another LA 46 of rather tired appearance. Found a worst state one in the back of the clubhouse shed. While flying above model club member offered a FOC near brand new one (Thanks Dave). To cap that an ex modellers estate was dropped off at the clubhouse, no price and just put the models to good use. Foam gliders all gone, even the twin brushed thing went....just the two ic models untaken (ones a wot 4). Moral of the story, just ask about they are either dead cheap or given away. Quote Link to comment Share on other sites More sharing options...
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