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Laser Appreciation Society

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Jon - Laser Engines06/12/2018 08:46:26
4721 forum posts
174 photos
Posted by Tom Sharp 2 on 05/12/2018 22:50:31:

addicted but have suffered severe withdrawal symptoms recently due to non availability

its blink and you miss it at the moment. My 70's and 80's were gone in 26 hours.

The 70 is now done until the new year. Likely February time as we have parts to make.

Next in line are 180's and 100's. after that i will probably do 155's and then more 80's.

That is the master plan anyway, it might all go out the window but that is the plan.

Doug Campbell06/12/2018 14:51:16
93 forum posts
2 photos

Given the demand for the engines why doesnt your boss do a decent run of parts to meet potential orders? Seems an odd way to run a company

Jon - Laser Engines06/12/2018 15:28:40
4721 forum posts
174 photos
Posted by Doug Campbell on 06/12/2018 14:51:16:

Given the demand for the engines why doesnt your boss do a decent run of parts to meet potential orders? Seems an odd way to run a company

I wish i knew. It also looks like i am getting another job to do so the work that was once shared between 4 people is now all down to me. I cant say i am particularly impressed by that.

alan p06/12/2018 16:29:59
218 forum posts
3 photos

Shame you aren't in the midlands, lots of retired toolroom craftsmen wouldn't mind a little part time job to keep occupied.Probably all modellers wanting a Laser Engine!!!

Former Member07/12/2018 19:12:40
724 forum posts

[This posting has been removed]

Percy Verance07/12/2018 20:08:48
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8109 forum posts
155 photos

And that's before you've even run it or flown it.....

Rest assured ST, the best bit is yet to come.......the throtting qualities alone put most other model engines in the shade.........

 

Edited By Percy Verance on 07/12/2018 20:13:05

GrahamWh01/01/2019 18:31:56
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356 forum posts
53 photos

Wahay - in the club! I bought a second hand laser 80 today. Post-1992 as it has upright glow plug, but not the very latest as it has the Irvine carb and straight sided cylinder (but with polished rounded off vane edges). In a very well built and painted Flair Fokker DVII too!

GrahamWh12/01/2019 13:29:13
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356 forum posts
53 photos

I cleaned the above Laser 80 (which was made in 1999 judging from the 9 punched in the side of the mounting plate and originally sold to someone with the initials MW). I cleaned out the insides too and replaced the three bearings with stainless ones - the front two had begun to rust a little. I got it running on the bench today - it idles at 1800-1900 and gets up to 9600 rpm with a MA K series 14x6 prop on Optifuel 5%. I'll try it on a 15x6 following Jon's recommendation over the phone when I ordered a new prop nut and washer for it. Very pleased with it - I have worked on a few old ones with my brother, but this is the first I've owned myself. I particularly like the layout - you can change the main crankshaft bearings just by taking of the front section without affecting the timing or removing the head.

Manish Chandrayan12/01/2019 15:26:59
576 forum posts
65 photos
How about some pictures or a video of the restored engine Graham
Jon - Laser Engines12/01/2019 15:34:55
4721 forum posts
174 photos

Nice work Graham. I normally benchmark the 80 on a 14x6 apc and look for 9000-9200rpm. Clearly the MA prop is a lighter load but your revs are good either way.

I recommend you put a little time on it, 20 minutes or so, before going up to the bigger prop

GrahamWh12/01/2019 16:22:09
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356 forum posts
53 photos

Thanks for the advice Jon, will do.

Here's a couple of pics - it was in good condition when I bought it, but some exhaust stains externally and a bit of rust forming on the two front bearings.

lhs.jpg

rhs.jpg

Former Member12/01/2019 17:15:15
724 forum posts

[This posting has been removed]

Manish Chandrayan12/01/2019 17:18:28
576 forum posts
65 photos
Nice work Graham. The muffler already looks polished up
GrahamWh12/01/2019 17:51:39
avatar
356 forum posts
53 photos

I have ordered a plan and wood pack set for the 80" BE2e from Doolittle Media (Flying Scale Models) and look forward to putting a few new stains on the engine with that in due course! Thanks for your kind comments and suggestions.

David Davis12/01/2019 18:12:08
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3346 forum posts
577 photos

You'll love it Graham.

be2e sunday 9th april 2017 no 1.php.jpg

GrahamWh15/01/2019 20:18:54
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356 forum posts
53 photos

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

Don Fry15/01/2019 20:56:12
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3724 forum posts
42 photos

So, a modern 200v, has just gone on e Bay for £360, plus postage.

Jon - Laser Engines15/01/2019 22:47:34
4721 forum posts
174 photos
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
GrahamWh16/01/2019 18:32:59
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356 forum posts
53 photos

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

Jon - Laser Engines16/01/2019 22:08:44
4721 forum posts
174 photos

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.

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