Laser 80 Diesel Four Stroke!
04-04-2008, 06:51 AM
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Laser 80 Diesel Four Stroke!
Here's a video of one of these rare gems in action:
http://www.youtube.com/watch?v=vMt6SjLuF54
http://www.youtube.com/watch?v=uwAme6fAV10&feature=user
http://www.youtube.com/watch?v=vMt6SjLuF54
http://www.youtube.com/watch?v=uwAme6fAV10&feature=user
04-05-2008, 12:22 PM
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RE: Laser 80 Diesel Four Stroke!
http://www.laserengines.com/index.htm
Laser Engines have made very limited runs of diesel four strokes, I´m aware of versions in 75 and 80 sizes.
They normally sell from the factory direct, without intermediaries.
I wrote and asked about the diesel version some 10 years ago. Neil Tidey promptly wrote back and said they might do another run if there was enough interest. One year later I got another letter saying my engine was ready!
Neil Tidey is a seriously nice and well-organized person, I have no idea if he wants to make any more diesels, but I´m sure he´ll let you know if you ask.
Laser Engines have made very limited runs of diesel four strokes, I´m aware of versions in 75 and 80 sizes.
They normally sell from the factory direct, without intermediaries.
I wrote and asked about the diesel version some 10 years ago. Neil Tidey promptly wrote back and said they might do another run if there was enough interest. One year later I got another letter saying my engine was ready!
Neil Tidey is a seriously nice and well-organized person, I have no idea if he wants to make any more diesels, but I´m sure he´ll let you know if you ask.
04-05-2008, 03:43 PM
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RE: Laser 80 Diesel Four Stroke!
OK fellow members of the esteemed Honourable Order of the Oily Rag ... who would be on for a "group buy" in order to persuade Neil to do a run of these? You only live once ...
Be aware however, LASER engines do not come cheap; and there may be a premium again for a diesel LASER as opposed to the usual gl*w version, given the extra manufacturing steps involved. To ease the "sticker shock", think of the purchase of one of these as an investment to be treasured for life.
Maybe an enquiry with LASER HQ as to price if, say, 6 were to be manufactured, would be a good starting point?
Any interest gents? If so, please post here!
Be aware however, LASER engines do not come cheap; and there may be a premium again for a diesel LASER as opposed to the usual gl*w version, given the extra manufacturing steps involved. To ease the "sticker shock", think of the purchase of one of these as an investment to be treasured for life.
Maybe an enquiry with LASER HQ as to price if, say, 6 were to be manufactured, would be a good starting point?
Any interest gents? If so, please post here!
04-06-2008, 02:24 AM
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RE: Laser 80 Diesel Four Stroke!
ORIGINAL: fiery
Be aware however, LASER engines do not come cheap; ...
Be aware however, LASER engines do not come cheap; ...
04-06-2008, 03:32 AM
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RE: Laser 80 Diesel Four Stroke!
http://www.laserengines.com
List for USA and other countries is UK215, non-EEC countries is UK205, postage included which is nice as UK to Aus postage can be quite costly.
List for USA and other countries is UK215, non-EEC countries is UK205, postage included which is nice as UK to Aus postage can be quite costly.
12-19-2015, 07:01 PM
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** UPDATE **
I have been speaking with a LASER factory engineer.
If you want a LASER diesel, the factory will build one for you.
.80 and .100 sizes available.
contact Jon using the email link shown on this page:
http://www.laserengines.com/contact-us/
I have been speaking with a LASER factory engineer.
If you want a LASER diesel, the factory will build one for you.
.80 and .100 sizes available.
contact Jon using the email link shown on this page:
http://www.laserengines.com/contact-us/
12-19-2015, 07:15 PM
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Here is the text:
"If you or any of your compression ignition loving friends on the 'other' forum are interested, I do now have 80 and 100 diesels available again. That is to say, I can build you one if you like. They are a bit better than the old ones but still require some understanding and patience to get the best out of them. The 100 swings a 17x6 apc prop at about 6400rpm. I have a video here on me testing one on a 14x7 just to get the revs up while it ran in"
"If you or any of your compression ignition loving friends on the 'other' forum are interested, I do now have 80 and 100 diesels available again. That is to say, I can build you one if you like. They are a bit better than the old ones but still require some understanding and patience to get the best out of them. The 100 swings a 17x6 apc prop at about 6400rpm. I have a video here on me testing one on a 14x7 just to get the revs up while it ran in"
12-19-2015, 07:20 PM
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Video of a new build (Nov. 2015) LASER diesel:
https://www.youtube.com/watch?v=zQwO...layer_embedded
https://www.youtube.com/watch?v=zQwO...layer_embedded
04-11-2016, 12:05 AM
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I've seen the Laser guy ... can't remember his name ... fly his .80-powered model, on a few occasions. Seems to work pretty well.
I know that I had a lot of fun with an Enya .40 four-stroke diesel. Oh, but if only someone could crack the problem of fuel injection at this scale.
I know that I had a lot of fun with an Enya .40 four-stroke diesel. Oh, but if only someone could crack the problem of fuel injection at this scale.
04-13-2016, 12:44 AM
#15
Looking at the video it doesn't run very well though, in terms of pickup from idle and smoothness?
It seems to be both missing and being overcompressed at the same time somehow...?
Perhaps it is fuel related related, but I think would need to have a better handling before one gets too excited about it. Perhaps the cam timings needs altering too, compared to glow, to give a smoother run.
It seems to be both missing and being overcompressed at the same time somehow...?
Perhaps it is fuel related related, but I think would need to have a better handling before one gets too excited about it. Perhaps the cam timings needs altering too, compared to glow, to give a smoother run.
04-13-2016, 01:58 AM
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Looking at the video it doesn't run very well though, in terms of pickup from idle and smoothness?
It seems to be both missing and being overcompressed at the same time somehow...?
Perhaps it is fuel related related, but I think would need to have a better handling before one gets too excited about it. Perhaps the cam timings needs altering too, compared to glow, to give a smoother run.
It seems to be both missing and being overcompressed at the same time somehow...?
Perhaps it is fuel related related, but I think would need to have a better handling before one gets too excited about it. Perhaps the cam timings needs altering too, compared to glow, to give a smoother run.
I've run a couple of diesel four-strokes, and they both seem similar to the Laser, in terms of handling.
Without being able to control the injection timing, it is simply impossible to get a smooth transition. AFAIK.
The best you can get is "acceptable", throughout a fairly narrow range of rpm.
04-13-2016, 11:24 PM
#17
Are these "dedicated" disels or a higher compression head on a glow engine?
On two-strokes some engines will transition very well, these are usually rather timid as glow engines but work well as diesels. Just wondering if four-strokes are similar, e.g. less overlap between valve openings, smaller carbs etc. might them better suited for diesel fuels.
On two-strokes some engines will transition very well, these are usually rather timid as glow engines but work well as diesels. Just wondering if four-strokes are similar, e.g. less overlap between valve openings, smaller carbs etc. might them better suited for diesel fuels.
04-14-2016, 04:48 AM
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If I may add to the discussion from a different direction, most have seen this before. This early Saito .80 has a 15.5 to 1 compression ratio, it effortlessly turns a Bolly 13.5x8 at 8,790 rpm on Davis ABC mix. Acceleration is very quick and clean. I am stuck with that prop because the compression is not adjustable.
05-23-2016, 12:54 AM
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Latest batch of Laser diesels nearly complete. Hopefully I will get my 80 this week to have a play with.
My only worry is that in all the videos the comp screw backs off when running. Anyone got more feedback on this?
Cheers
Doug
My only worry is that in all the videos the comp screw backs off when running. Anyone got more feedback on this?
Cheers
Doug
05-23-2016, 01:52 AM
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All LASER diesels have a tension pad (similar to the Davis heads) to adjust the compression screw 'drag'. In some videos this has not been wound in to provide adequate tension.
06-04-2016, 04:42 PM
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My Laser .80
I got my Laser .80 four stroke diesel a couple months back. As received the compression screw holds settings with iut backing off while running.. So far just run on tests stand on 3 different days. Jack Hiner USA
06-08-2016, 10:59 PM
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Thanks Jack. I have got my engine and now see how the compression lock works. I gave it about 30mins running on commercial fuel, I will mix up something more suitable before I run it again. It bit me a couple of times, now that did hurt!
Doug
Doug
