Bme 50
10-22-2002 | 01:52 AM
#29
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From: Hammond,
IN
Bme 50
No one is doubting the power of a 55cc gasser.
We're doubting the weight claims of 2 lbs.
Stare really hard at either an OS 1.40 RX or a Supertigre 2300 and then tell me how you add a pumper carb and an ignition and a set of reed valves and a spark plug and a steel con rod instead of an aluminum one and DOUBLE the displacement without gaining weight.
This sounds like Enron and Arthur Anderson are weighing the motor.
Will it weigh 2.0, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7, 2.8, 2.9, pounds?
Perhaps they rounded 2.8 lbs down to 2 lbs???
We're doubting the weight claims of 2 lbs.
Stare really hard at either an OS 1.40 RX or a Supertigre 2300 and then tell me how you add a pumper carb and an ignition and a set of reed valves and a spark plug and a steel con rod instead of an aluminum one and DOUBLE the displacement without gaining weight.
This sounds like Enron and Arthur Anderson are weighing the motor.
Will it weigh 2.0, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7, 2.8, 2.9, pounds?
Perhaps they rounded 2.8 lbs down to 2 lbs???
10-27-2002 | 12:21 AM
#32
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From: Minnetonka, MN
New engines
I just visited the Desert Aircraft website, and noticed they are offering a new single cylinder engine that looks pretty impressive to me...the DA-50-R ....see what you guys think....
http://www.desertaircraft.com/da50.html
http://www.desertaircraft.com/da50.html
10-27-2002 | 03:29 AM
#33
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From: Spokane, WA
55 Ext.
I spoke with Keith Friday. He said they were shooting for 2.5 pounds, sounding like they were not there yet. Hoping for a finished product after the first of the year or early spring.
Sounds Good!!!!!!.
Sounds Good!!!!!!.
01-11-2003 | 05:18 PM
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From: Hammond,
IN
Bme 50
Foamed ceramic pistons?
In production anywhere in the World?
Can you get on the phone and order one?
You could also make the thing out of beryllium, but then there might not be anyone around in a year to do the warranty work.
I will reserve my conclusions until the BME 110 is actually in production and people are flying the thing. Then we can all speculate some more on the future arrival of the 55 and how close it will come to meeting the design target.
The DA-50 is also just hitting the streets now. Let's get some feedback here from the pilots before everyone pronounces it a winner or a loser based on the reputation of DA alone.
In production anywhere in the World?
Can you get on the phone and order one?
You could also make the thing out of beryllium, but then there might not be anyone around in a year to do the warranty work.
I will reserve my conclusions until the BME 110 is actually in production and people are flying the thing. Then we can all speculate some more on the future arrival of the 55 and how close it will come to meeting the design target.
The DA-50 is also just hitting the streets now. Let's get some feedback here from the pilots before everyone pronounces it a winner or a loser based on the reputation of DA alone.
01-12-2003 | 10:17 PM
#37
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From: concord, NC
Bme 50
imagine this. . BME55 . .quiet pipe in the belly, 20-10 three blade. . 80 dB .. in a pattern plane. . gives a whole new meaning to the term "unlimited performance".
01-13-2003 | 12:56 AM
#38
Bme 50
Having been into the gas powered pattern model design trial since--August - I have found a few thing s worth thinking about -
This is based on hands on flying and as of today - a LOT of it -using a 40 REZDZ and a tuned setup-
First off- the low sound level is possible - but you need more pitch - I really don't expect to see the best results on 10" pitch- the reason why is that at lower revs -you need more pitch.
A super duper low engine weight is nice -but not all that important-- any competent builder can hit 11 lbs with any decent 40 --no secret tricks needed .
The models do fly different as compared with the existing 9-10-11 lb 1.4 powered models - the power - raw thrust available can be easily overused -and flying gets jerky -not the fluid flight as seen for top drawer FAI.
The new series of 50 engines on the market should easily be capable of working for the present FAI schedules.
Here is the BUT!
I really think, that FAI has a chance of makeing a change to a slightly bigger /heavier model-so I am not doing anything more with my current project except for using it to work out the new IMAC Unlimited pattern - It is great for that -
I hate doing up a design -then having the rules change - FAI votes in March -on new rules for the next cycle -
some countries are already proposing increased weight limits for their own use .
And why not - as far as I can see - the use of a modern 40-50 cc gasser has it all over any overpriced /expensive fuel glow engine now being used - I have used both and I would not go back to the others -which were really not a problem for me - just that I think their time came -and has gone -RIP
This is based on hands on flying and as of today - a LOT of it -using a 40 REZDZ and a tuned setup-
First off- the low sound level is possible - but you need more pitch - I really don't expect to see the best results on 10" pitch- the reason why is that at lower revs -you need more pitch.
A super duper low engine weight is nice -but not all that important-- any competent builder can hit 11 lbs with any decent 40 --no secret tricks needed .
The models do fly different as compared with the existing 9-10-11 lb 1.4 powered models - the power - raw thrust available can be easily overused -and flying gets jerky -not the fluid flight as seen for top drawer FAI.
The new series of 50 engines on the market should easily be capable of working for the present FAI schedules.
Here is the BUT!
I really think, that FAI has a chance of makeing a change to a slightly bigger /heavier model-so I am not doing anything more with my current project except for using it to work out the new IMAC Unlimited pattern - It is great for that -
I hate doing up a design -then having the rules change - FAI votes in March -on new rules for the next cycle -
some countries are already proposing increased weight limits for their own use .
And why not - as far as I can see - the use of a modern 40-50 cc gasser has it all over any overpriced /expensive fuel glow engine now being used - I have used both and I would not go back to the others -which were really not a problem for me - just that I think their time came -and has gone -RIP
01-13-2003 | 01:13 AM
#39
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From: concord, NC
Bme 50
Knowing the FAI. . they might do something really silly if they go to larger planes. . . . like make an engine limit of 50cc's . . . . . that would be EVIL!!!
01-13-2003 | 02:13 AM
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From: concord, NC
Bme 50
A 1.6 CID (26 cc) glo motor that costs more than an 80 cc gasser IS evil!!!!!. . heck you can pick up a used 150 for what a new FI 1.6 glo costs!!!
time to introduce the FAI to the wonderful world of GAS!!!
time to introduce the FAI to the wonderful world of GAS!!!
01-13-2003 | 02:14 AM
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From: Hammond,
IN
Bme 50
Wow Dick:
That would be amazing if the FAI bumped the plane size and weight limit up to allow gassers! If it happens you should be congratulated for helping to pioneer the idea. Just say no to glow.
That would be amazing if the FAI bumped the plane size and weight limit up to allow gassers! If it happens you should be congratulated for helping to pioneer the idea. Just say no to glow.
01-13-2003 | 03:34 AM
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From: west,
TX
Bme 50
Better sell the rest of my glow stuff while it still has some value.
Hate to get off topic here but, I need to find out what prop this bme 50 really works well with on a 16lb. plane. you know, stopin and startin while pointed straight up, that kinda stuff
Hate to get off topic here but, I need to find out what prop this bme 50 really works well with on a 16lb. plane. you know, stopin and startin while pointed straight up, that kinda stuff
01-13-2003 | 01:30 PM
#45
Bme 50
Just a AWAG- but I would think that any move to larger would be a one (1) KG upgrade and possibly a size limit.
There are lots of ways to go - for example a workable one would be --no engine limit -BUT model must weigh between 5 and 6 kg thats 11 to 13.2 lbs.
Some guys who are sponsered will object to any change -but - the cost of glo fuel for many -is very high-
For weuns- it was 16 bucks a gallon and my 1.4 engines simply swilled the stuff-
Nope I don't miss em at all.
There are lots of ways to go - for example a workable one would be --no engine limit -BUT model must weigh between 5 and 6 kg thats 11 to 13.2 lbs.
Some guys who are sponsered will object to any change -but - the cost of glo fuel for many -is very high-
For weuns- it was 16 bucks a gallon and my 1.4 engines simply swilled the stuff-
Nope I don't miss em at all.
