NGH 38CC 4 stroke
#1
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NGH 38CC 4 stroke
#2
RE: NGH 38CC 4 stroke
I can't get one for a while, but I plan on it.
I find it odd they bent the fuel inlet tube over and pointed it up. That would tend to make the fuel line make a large loop to the carb on the engine.
Good thing they sold out already, so I don't have to fret about getting one for a while.
I noticed some people had posted videos of it already, so a few people are flying them so far.
I find it odd they bent the fuel inlet tube over and pointed it up. That would tend to make the fuel line make a large loop to the carb on the engine.
Good thing they sold out already, so I don't have to fret about getting one for a while.
I noticed some people had posted videos of it already, so a few people are flying them so far.
#3
#5
RE: NGH 38CC 4 stroke
ORIGINAL: airraptor
My thoughts are this is a big magnum engine that was set up for glow. now it will be gas with no increase in cooling fins. will have to run rich and dont think it could be cowled in.
My thoughts are this is a big magnum engine that was set up for glow. now it will be gas with no increase in cooling fins. will have to run rich and dont think it could be cowled in.
Saito didn't increase the cooling fin area on their gasser four strokes either. But I don't know if anyone cowls the gasser Saitos in or not.
#9
RE: NGH 38CC 4 stroke
ORIGINAL: airraptor
My thoughts are this is a big magnum engine that was set up for glow. now it will be gas with no increase in cooling fins. will have to run rich and dont think it could be cowled in.
My thoughts are this is a big magnum engine that was set up for glow. now it will be gas with no increase in cooling fins. will have to run rich and dont think it could be cowled in.
#10
RE: NGH 38CC 4 stroke
ORIGINAL: acerc
Doesn'tgas and nitro run in the same temperature range?Thefore no change needed in the fin's or cowl application's?
Doesn'tgas and nitro run in the same temperature range?Thefore no change needed in the fin's or cowl application's?
It is somewhat amazing how much cooling methanol can have in a glow engine. When you look a at some of the racing engines, they tend to have little to no cooling fins on them and they tightly cowl the engines in as well. But the engines run OK like that.
Here is the temperatures I was measuring on a NGH 9cc gas engine, at the base of the glow plug, when it was 82 degrees F outside a while back. In the heat of the summer when the ambient temperatures are higher, the engine's temperature goes up accordingly too.
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RE: NGH 38CC 4 stroke
It look's like the rod is equiped with needle bearings, that said, I would gladly snatch one up at $380, much better than 1000+ for a simular size Saito! Hell, run it on gas/glow mix if you want some extra cooling
#14
RE: NGH 38CC 4 stroke
ORIGINAL: airraptor
What prop and rpm? how much is it in US. The roto motor 35 will spin a 20x10 xoar at 6,000
What prop and rpm? how much is it in US. The roto motor 35 will spin a 20x10 xoar at 6,000
I would assume the cost would be about $20 to $30 more in the USA than from HiModel in China.
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RE: NGH 38CC 4 stroke
ORIGINAL: airraptor
My thoughts are this is a big magnum engine that was set up for glow. now it will be gas with no increase in cooling fins. will have to run rich and dont think it could be cowled in.
My thoughts are this is a big magnum engine that was set up for glow. now it will be gas with no increase in cooling fins. will have to run rich and dont think it could be cowled in.
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RE: NGH 38CC 4 stroke
First test on a production unit today:
GREAT ENGINE !!!!!
Include the engine mounting plate, RCEXL ignition, allen wrench, RCEXL standard CM6 spark plug,
My only guess is to include a 120 degrees spark plug cap. Better fit than 90 degrees supplied.
I've dismantled all parts to take pictures and check quality : awesome..
Needle bearings on both sides of con-rod, a custom WT1022 carb, very well made the intake mainfold , with two nipples, one for the oil from cranckcase and one for carb pressure pulses. Many interesting mechanical solutions, and NONE of the parts are from Magnum or a glow existing engine. All parts are designed from scratch. Like many others products of differents manufacturers ,they looks the same ....
[youtube]http://www.youtube.com/watch?v=gfiSpIg8pz0[/youtube]
Best regards
GREAT ENGINE !!!!!
Include the engine mounting plate, RCEXL ignition, allen wrench, RCEXL standard CM6 spark plug,
My only guess is to include a 120 degrees spark plug cap. Better fit than 90 degrees supplied.
I've dismantled all parts to take pictures and check quality : awesome..
Needle bearings on both sides of con-rod, a custom WT1022 carb, very well made the intake mainfold , with two nipples, one for the oil from cranckcase and one for carb pressure pulses. Many interesting mechanical solutions, and NONE of the parts are from Magnum or a glow existing engine. All parts are designed from scratch. Like many others products of differents manufacturers ,they looks the same ....
[youtube]http://www.youtube.com/watch?v=gfiSpIg8pz0[/youtube]
Best regards
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RE: NGH 38CC 4 stroke
ORIGINAL: mpascual
First test on a production unit today:
GREAT ENGINE !!!!!
Include the engine mounting plate, RCEXL ignition, allen wrench, RCEXL standard CM6 spark plug,
My only guess is to include a 120 degrees spark plug cap. Better fit than 90 degrees supplied.
I've dismantled all parts to take pictures and check quality : awesome..
Needle bearings on both sides of con-rod, a custom WT1022 carb, very well made the intake mainfold , with two nipples, one for the oil from cranckcase and one for carb pressure pulses. Many interesting mechanical solutions, and NONE of the parts are from Magnum or a glow existing engine. All parts are designed from scratch. Like many others products of differents manufacturers ,they looks the same ....
[youtube]http://www.youtube.com/watch?v=gfiSpIg8pz0[/youtube]
Best regards
Have you looked at the rocker box, do the valves run in guides? If so, do they look like bronze, I'm currious as to how well the exaust valve will hold up.
First test on a production unit today:
GREAT ENGINE !!!!!
Include the engine mounting plate, RCEXL ignition, allen wrench, RCEXL standard CM6 spark plug,
My only guess is to include a 120 degrees spark plug cap. Better fit than 90 degrees supplied.
I've dismantled all parts to take pictures and check quality : awesome..
Needle bearings on both sides of con-rod, a custom WT1022 carb, very well made the intake mainfold , with two nipples, one for the oil from cranckcase and one for carb pressure pulses. Many interesting mechanical solutions, and NONE of the parts are from Magnum or a glow existing engine. All parts are designed from scratch. Like many others products of differents manufacturers ,they looks the same ....
[youtube]http://www.youtube.com/watch?v=gfiSpIg8pz0[/youtube]
Best regards
Have you looked at the rocker box, do the valves run in guides? If so, do they look like bronze, I'm currious as to how well the exaust valve will hold up.
#22
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RE: NGH 38CC 4 stroke
ORIGINAL: mpascual
First test on a production unit today:
GREAT ENGINE !!!!!
Include the engine mounting plate, RCEXL ignition, allen wrench, RCEXL standard CM6 spark plug,
My only guess is to include a 120 degrees spark plug cap. Better fit than 90 degrees supplied.
I've dismantled all parts to take pictures and check quality : awesome..
Needle bearings on both sides of con-rod, a custom WT1022 carb, very well made the intake mainfold , with two nipples, one for the oil from cranckcase and one for carb pressure pulses. Many interesting mechanical solutions, and NONE of the parts are from Magnum or a glow existing engine. All parts are designed from scratch. Like many others products of differents manufacturers ,they looks the same ....
[youtube]http://www.youtube.com/watch?v=gfiSpIg8pz0[/youtube]
Best regards
First test on a production unit today:
GREAT ENGINE !!!!!
Include the engine mounting plate, RCEXL ignition, allen wrench, RCEXL standard CM6 spark plug,
My only guess is to include a 120 degrees spark plug cap. Better fit than 90 degrees supplied.
I've dismantled all parts to take pictures and check quality : awesome..
Needle bearings on both sides of con-rod, a custom WT1022 carb, very well made the intake mainfold , with two nipples, one for the oil from cranckcase and one for carb pressure pulses. Many interesting mechanical solutions, and NONE of the parts are from Magnum or a glow existing engine. All parts are designed from scratch. Like many others products of differents manufacturers ,they looks the same ....
[youtube]http://www.youtube.com/watch?v=gfiSpIg8pz0[/youtube]
Best regards
Wll you be flying this soon? I'm interested to know if it develops enough thrust for a 2x2 pattern application.
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#23
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RE: NGH 38CC 4 stroke
ORIGINAL: TimBle
you ca only fit X amount of cooling fin area on a given mass of engine.
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ORIGINAL: airraptor
My thoughts are this is a big magnum engine that was set up for glow. now it will be gas with no increase in cooling fins. will have to run rich and dont think it could be cowled in.
My thoughts are this is a big magnum engine that was set up for glow. now it will be gas with no increase in cooling fins. will have to run rich and dont think it could be cowled in.
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#24
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RE: NGH 38CC 4 stroke
But the amount of heat needed to be absorbed by the air is in proportion to the power produced and the efficiency of the engine. If the mechanical efficiency is similar and power produced is similar then heat rejection is similar....