GrahamWh Posted January 15, 2019 Share Posted January 15, 2019 Looks great David - looking forward to it arriving sometime soon hopefully! Jon, thanks for the video you posted somewhere showing you setting the main needles on a Laser twin. Pictures speak a thousand words they say. Do you have a video of setting the idle needles (on a single would be fine)? Its something I have always struggled with. Another great thing about the Lasers is that the idle screw is so large and accessible and turnable by finger and thumb - much better than the tiny hidden away ones in many other makes of engine which have you playing around with small screwdrivers. Edited By GrahamWh on 15/01/2019 20:19:13 Quote Link to comment Share on other sites More sharing options...
Don Fry Posted January 15, 2019 Share Posted January 15, 2019 So, a modern 200v, has just gone on e Bay for £360, plus postage. Quote Link to comment Share on other sites More sharing options...
Jon H Posted January 15, 2019 Share Posted January 15, 2019 Posted by GrahamWh on 15/01/2019 20:18:54: Jon, thanks for the video you posted somewhere showing you setting the main needles on a Laser twin. Pictures speak a thousand words they say. Do you have a video of setting the idle needles tadaaaa! Its a similar principal on the twin, you just move both needles thats all. When one cylinder starts to bog down as you see in the video richen it back so it stops bogging but keep leaning the other until it does. Don, its at least 12 years old but yes...i know, and i cont do anything about it Quote Link to comment Share on other sites More sharing options...
GrahamWh Posted January 16, 2019 Share Posted January 16, 2019 Thanks very much indeed Jon. It looks like you lean the idle needle until the engine is no longer is able to give a proper throttle response, then enrich it until it is just able to do so without getting over rich. Edited By GrahamWh on 16/01/2019 18:38:56 Quote Link to comment Share on other sites More sharing options...
Jon H Posted January 16, 2019 Share Posted January 16, 2019 pretty much. If you are super keen you can set it a smidge lean on the ground so that its perfect in the air. Also, the less ham fisted you are with your throttle the leaner you can run it. Quote Link to comment Share on other sites More sharing options...
bert baker Posted August 2, 2019 Share Posted August 2, 2019 Massive thanks to Jon for a swift turn around on a full service and rebuilding my 15yearl old 180, Runs sweet Quote Link to comment Share on other sites More sharing options...
Chris Walby Posted August 27, 2019 Share Posted August 27, 2019 Jon, A club member presented his model for a test run (with a Laser 90 in it) and after a little tinkering (not me!) it started and ran up for the first time in about 4 years. It sits inverted in the model with a full cowl, but with a fair amount of ventilation. Couple of questions? Had a quick look on the web site but could not find the recommended prop for a 90, would the 80 recommendations be close enough (we were getting just short or 9k on the prop we had) Should the tank vent be left loose to dangle vertically down or better to fit on to a forward facing "pitot" tube? I noticed fuel dripping from the main needle once stopped, does the owner need to obtain some o rings or is there another fix. I didn't fancy taking the cowl off in yesterdays 30+ heat too look at the carb A bit late now, but Is there anything else we need to check before committing to aviation? Thanks for your time Quote Link to comment Share on other sites More sharing options...
Jon H Posted August 27, 2019 Share Posted August 27, 2019 The 90 was developed into the 100 so you can use those props. Look for 7500-9000 at full chat. You dont want the vent to dangle, make up a pitot fuel dripping is 99% of the time caused by the fuel tank being way up in space. Lower it to prevent dripping and make the engine run properly. Not too much else to say other than to tell him not to break it as i cant supply any spares for it as the 90 was discontinued in 1992 Quote Link to comment Share on other sites More sharing options...
Chris Walby Posted August 27, 2019 Share Posted August 27, 2019 Thanks Jon, I'll let him know about the tank and pitot tube. plus I'll introduce him to the rates switch.....his last model had high rates and no expo...how much fun I had with that "Extra" I would rather not repeat! PS the CofG is just behind the LE...might need some lead as well Quote Link to comment Share on other sites More sharing options...
cymaz Posted August 27, 2019 Share Posted August 27, 2019 Posted by Chris Walby on 27/08/2019 14:54:09: Thanks Jon, I'll let him know about the tank and pitot tube. plus I'll introduce him to the rates switch.....his last model had high rates and no expo...how much fun I had with that "Extra" I would rather not repeat! PS the CofG is just behind the LE...might need some lead as well Wow....I bet a certain part of your anatomy which twitching like a rabbits nose! Quote Link to comment Share on other sites More sharing options...
Frank Skilbeck Posted August 27, 2019 Author Share Posted August 27, 2019 Posted by Chris Walby on 27/08/2019 14:54:09: PS the CofG is just behind the LE...might need some lead as well Leading or trailing edge, if it's the former then the lead will need to go on the tail. Quote Link to comment Share on other sites More sharing options...
Chris Walby Posted September 9, 2019 Share Posted September 9, 2019 Club open day yesterday, wing was bumpy in the morning, but ended up dead still late afternoon. Three flights with the Acrowot & Dual Ace and one with the Mosquito, all Laser 70 and not a beat missed. PS apologies for the electric A10 for sneaking into the photo! Quote Link to comment Share on other sites More sharing options...
Scott Edwards 2 Posted September 16, 2019 Share Posted September 16, 2019 Maiden flight of the 4 metre span Wellington, powered by a pair of Laser 180 singles turning Falcon 20x6 props. The whole airframe acts like a giant soundbox and sounds glorious ! Quote Link to comment Share on other sites More sharing options...
Don Fry Posted September 16, 2019 Share Posted September 16, 2019 Respect Scott. That is a lot of work, and well done. Quote Link to comment Share on other sites More sharing options...
Manish Chandrayan Posted September 17, 2019 Share Posted September 17, 2019 Lovely looking model there Scott. I placed order for the Wellington just yesterday Maybe I could trouble you for some building notes etc Quote Link to comment Share on other sites More sharing options...
Chris Walby Posted October 20, 2019 Share Posted October 20, 2019 Not really the season for troublesome Warbirds and I though 4 screws, 4 bolts and a throttle linkage was hardly good reason to have my Laser 180 doing nothing. Far better if find a nice airframe that can allow me to run the engine through the winter months and have some fun at the same time. Along comes a Hyperion YAK 54, old, but in very good condition and just the job. Servos fitted with ease and the 180 located inverted + a couple of tanks linked together and hay presto! Saturday was the maiden and a couple of flights today with no issues. Sounds lovely as it growls around the sky and will just about do unlimited vertical..... or very big stall turns. That will do nicely sir! Quote Link to comment Share on other sites More sharing options...
Chris Walby Posted October 30, 2019 Share Posted October 30, 2019 Yesterday was light wind, bright and sometime sunny! It would be a shame not to tale little and large (for me) out for a bit of fun. The Acrowot with a 70 in it is just bags of fun, easy to fly and throw around highly recommended combination - Thanks Jon. The YAK is taking a bit more learning and it seems quite vice less, but I don't want to find out too low. Anyway the 180 is great fun at 1/2 throttle with an occasional poke up to full throttle for those unlimited climbs. Five flights and that was me worn out for the morning....back to the hanger for the next Laser powered build Quote Link to comment Share on other sites More sharing options...
Tim Flyer Posted November 3, 2019 Share Posted November 3, 2019 An old laser 60 previously owned by Jon sprang to life today in a nice little Black Horse Spitfire 40 owned and flown by my clubmate Nick . I must say the engine flew the model really well . Nick a few really great flights and perfect landings with it today despite our soft and quite long winter grass. The plane has fixed UC but moving the wire angles well forward allowed lovely take offs and landing with no nose overs despite the soft conditions. It was great to see the lovely laser 60 go so well. Nick was using an 11x8 prop but maybe a 12x7 should be better ? Quote Link to comment Share on other sites More sharing options...
thebluemax Posted November 5, 2019 Share Posted November 5, 2019 I have a Laser 80 with a 12~5 3-blade prop on my Altech Pilatus Porter. It is a great running engine. I get questions every time I fly it as to what engine is in there. I get comments on the nice sound it has and how quiet it is too. Bill Quote Link to comment Share on other sites More sharing options...
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