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Testing the new NV (Norvel) .40 size (6.5cc) gasoline glow engine

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Testing the new NV (Norvel) .40 size (6.5cc) gasoline glow engine

Old 03-28-2019, 10:39 AM
  #1526  
hllywdb
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I believe there are additional differences in the carb as well, idle, maybe bore as well. The GX carb will run nitro, but not so much with the AX carb running gas.
Old 03-28-2019, 10:42 AM
  #1527  
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I suspect you're right. I converted from GX to. Ax. I did not try it the other way.
Old 03-28-2019, 10:42 AM
  #1528  
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Originally Posted by hllywdb View Post
I believe there are additional differences in the carb as well, idle, maybe bore as well. The GX carb will run nitro, but not so much with the AX carb running gas.
Originally Posted by hsukaria View Post
The GX has a longer and more gradually tapered needle valve because the carb adjustment gets very sensitive with gas.
Also a totally different head button that increases compression and uses a hot turbo glowplug. To handle the higher pressure with gas, you need to use the special head gaskets and head lockdown screws.
That's pretty much it as far as differences. But you will also need a lot of luck and MOJO!!!
That's exactly the kind of info I was looking for. Thank you gentlemen!
SKuhn68
Old 03-28-2019, 10:59 AM
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BTW, my original is still running great after all these years. I didn't get a lot of flying in last year so I did end up cleaning the carb and replacing the fuel lines to the tank.
I have seen a couple of bent rods on these, but always due to wrong mixture or electric starter. Due to the high HP/CI and HP/LB ratios, they are a bit more sensitive than your average weed wacker motor to fuel/mixture/abuse. I've never bent a con rod on a low power OS FP, but then again, I've never had a problem with a blower explosion on the wife's mini van either.
Old 03-28-2019, 12:05 PM
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if you go to YouTube and search, you will find a lot of guys running gasoline in their glow engines, most of these people are outside the USA where Alcohol is hard to buy

Jim
Old 03-28-2019, 10:47 PM
  #1531  
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Originally Posted by the Wasp View Post
if you go to YouTube and search, you will find a lot of guys running gasoline in their glow engines, most of these people are outside the USA where Alcohol is hard to buy

Jim
Do you know if this is simply a fuel change or are there modifications to the glow engines involved?
SKuhn68
Old 03-29-2019, 09:32 AM
  #1532  
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Originally Posted by SKuhn68 View Post
Do you know if this is simply a fuel change or are there modifications to the glow engines involved?
SKuhn68

a lot of the people on YouTube I was telling about are Heli flyers, so if you search YouTube search for Heli engines (OS Hyper 50, Hyper 55, Hyper 91) running on Gasoline. some of the videos tell you just what they have done to their engines, of course most use an E Ignition, some do use the stock Heli carbs, I tell you this, if you decide to run gasoline in a glow engine you could buy a gasoline carb made for these engines, such like the the GX40 Crab, or even a Saito gasoline Carb,,

if you decide to buy the OS 40AX you may really want to think about the OS 50SX or 55AX for the extra power, if you find one and wish to try a glow Carb I have a couple (brand new) OS Fine Needle Heli Carbs,I will be willing to sell one, they will fit the OS 50s and 55s, I think they will fit the 40 and 46 too.
BTW, you could buy a (new or used) Heli Head for the OS 46sx, 50sx, 55ax to help keep them cooler.

Jim

Last edited by the Wasp; 03-29-2019 at 09:36 AM.
Old 04-01-2019, 04:26 PM
  #1533  
Billsky
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Originally Posted by the Wasp View Post
a lot of the people on YouTube I was telling about are Heli flyers, so if you search YouTube search for Heli engines (OS Hyper 50, Hyper 55, Hyper 91) running on Gasoline. some of the videos tell you just what they have done to their engines, of course most use an E Ignition, some do use the stock Heli carbs, I tell you this, if you decide to run gasoline in a glow engine you could buy a gasoline carb made for these engines, such like the the GX40 Crab, or even a Saito gasoline Carb,,

if you decide to buy the OS 40AX you may really want to think about the OS 50SX or 55AX for the extra power, if you find one and wish to try a glow Carb I have a couple (brand new) OS Fine Needle Heli Carbs,I will be willing to sell one, they will fit the OS 50s and 55s, I think they will fit the 40 and 46 too.
BTW, you could buy a (new or used) Heli Head for the OS 46sx, 50sx, 55ax to help keep them cooler.

Jim
Just use below noted carb if you have a 46AX,55AX, or ASP engine in the same range. I have all three running on gas with the carb.

Carburetor Assembly: 8GX/10GX2 (EVOG08801B)

Old 04-12-2020, 10:30 AM
  #1534  
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Just run the gx40 for the first time and I am simply amazed how good this engine run.
I still wonder why are there no more engines like it except for the 2 O.S.
I know it do not have the same power as glow but is cheaper.
Old 04-13-2020, 04:41 AM
  #1535  
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The web site Mike Goes Flying sells a .36 gas engine for a reasonable price. But I have no personal experience with it.
Old 04-13-2020, 05:43 AM
  #1536  
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Originally Posted by hsukaria View Post
The web site Mike Goes Flying sells a .36 gas engine for a reasonable price. But I have no personal experience with it.
The .37 looks like a nice motor. It seems like the same as their glow motor except with more fins and the turbo plug. I see that it has a G on it presumably for gas. Likely an extra hot. Our dollar is quite low right now and he is not shipping outside the US anyway, so it is not a great option for me just to experiment with. I suppose I could pick it up at a post office address in Detroit if the border opens up some day. Looks very interesting. The instructions for fuel mixing may be a good thing to know/share if anyone has one. To be honest, I have made quite a few Turbo style heads for my smaller motors and wonder if gasoline would work considering the use of a bronze bushing on the rod. Not because of the fuel cost, but the oil cost. I really don't like the smell of gas in the van. On the one review it has mentioned 16:1 fuel mixture with half and half Klotz and 2 stroke oil.
Old 04-13-2020, 05:55 AM
  #1537  
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I was tempted to purchase a SH .37 gasser, but I really want to wait until there is more info out there

Looking back at my experience with the NV Engine 40GX, I think it failed because they were pushed to perform as a glow 46 instead of a regular 40. Whenever I convert back to GX from AX, I will add a head shim to reduce the stress on the crankpin. The failure of both GX engine I know of were due to crankpin failure.
Old 04-13-2020, 05:49 PM
  #1538  
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Originally Posted by hsukaria View Post
I was tempted to purchase a SH .37 gasser, but I really want to wait until there is more info out there

Looking back at my experience with the NV Engine 40GX, I think it failed because they were pushed to perform as a glow 46 instead of a regular 40. Whenever I convert back to GX from AX, I will add a head shim to reduce the stress on the crankpin. The failure of both GX engine I know of were due to crankpin failure.
The rod bent on my 40GX, not the crankpin. I replaced the rod but it wouldn't run right. I sent it back to Russia. The factory techs said nothing was wrong with it but they replaced the
carb. ?? Haven't run it since.

CR

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