Breaking in a new glow engine converted to gas.
03-19-2004 | 02:35 AM
#1
Breaking in a new glow engine converted to gas.
Hi All,
What is the best way to break in a new glow engine which you are going to convert to gas ?
Is it better to break it in on glow for a few tanks and then run in on gas or use gas from the start ?
I am thinking of converting a Saito or Laser 150 to gas . I know it may not be a good Idea ( I have read all the related threads in this forum a couple of times ! ) but I just enjoy the challenge
Thak you all in advance for your kind suggestions.
Hamid
What is the best way to break in a new glow engine which you are going to convert to gas ?
Is it better to break it in on glow for a few tanks and then run in on gas or use gas from the start ?
I am thinking of converting a Saito or Laser 150 to gas . I know it may not be a good Idea ( I have read all the related threads in this forum a couple of times ! ) but I just enjoy the challenge
Thak you all in advance for your kind suggestions.
Hamid
04-06-2004 | 10:31 PM
#2
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From: FORT WORTH,
TX
RE: Breaking in a new glow engine converted to gas.
hmmm good question and I don't have the answer... My only advise is to the science of break-in... I would say just break it in glow then convert it... Breaking is is just to initialize the proper wear on the engine... Check this out... This guy converted a Saito to run on gas... There are pics too I included one I would say contact "mklarich"...
ORIGINAL: mklarich
I read through many of the messages and replies on here and thought I would throw in my 2 cents worth or maybe just a couple pictures because they are worth much more then my 2 cents.
These are 2 shots of my Saito .72 that I converted to run on Regular Unleaded 89 Octane Gasoline. I am mixing oil with the fuel, this is not a wet sump system. I am using Klotz full synthetic oil that mixes with the gasoline at approximately 10-15% lubrication. I could easily go higher on the lube but I have found this to be enough. The ignition system is sold by CH Ignition and I am using a small regulator on the fuel. I will say the mixture is very touchie and I need to machine a new needle or change carbs.
Below the motor is an onboard starter I purchased from Hobby-Lobby, I installed all of this for a "Last Man Down" contest I fly in at Terre Haute, Indiana. When flying in that contest I used a custom made brass fuel tank that I soldered using .004 and .006 shim stock brass.
The motor is mounted on the front of my Senior Telemaster, it flies it quite nicely and I haven't noticed any loss in power in the conversion. I have another .72 Saito that is older then this one that I fly so I do have some comparison. One of these days I will do a more scientific reading on the motor and actually measure the difference in performance.
Matt Klarich
I read through many of the messages and replies on here and thought I would throw in my 2 cents worth or maybe just a couple pictures because they are worth much more then my 2 cents.
These are 2 shots of my Saito .72 that I converted to run on Regular Unleaded 89 Octane Gasoline. I am mixing oil with the fuel, this is not a wet sump system. I am using Klotz full synthetic oil that mixes with the gasoline at approximately 10-15% lubrication. I could easily go higher on the lube but I have found this to be enough. The ignition system is sold by CH Ignition and I am using a small regulator on the fuel. I will say the mixture is very touchie and I need to machine a new needle or change carbs.
Below the motor is an onboard starter I purchased from Hobby-Lobby, I installed all of this for a "Last Man Down" contest I fly in at Terre Haute, Indiana. When flying in that contest I used a custom made brass fuel tank that I soldered using .004 and .006 shim stock brass.
The motor is mounted on the front of my Senior Telemaster, it flies it quite nicely and I haven't noticed any loss in power in the conversion. I have another .72 Saito that is older then this one that I fly so I do have some comparison. One of these days I will do a more scientific reading on the motor and actually measure the difference in performance.
Matt Klarich
04-07-2004 | 04:14 PM
#3
Senior Member
My Feedback: (1)
RE: Breaking in a new glow engine converted to gas.
both the saito and laser have plated aluminium cylinders with a ringed piston, very similar to the gassers and very good at getting rid of heat which is a problem with a lot of glow-to-gas conversions. should be no problem to break them in on gas.
one problem is the lack of needle bearings on the rod. you will still need LOTS of oil
the other problem is that the carb will be way to sensitive. adapting a walbro would solve this
dave
one problem is the lack of needle bearings on the rod. you will still need LOTS of oil
the other problem is that the carb will be way to sensitive. adapting a walbro would solve this
dave
04-08-2004 | 03:48 PM
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From: ashland city, TN
RE: Breaking in a new glow engine converted to gas.
I think that gasoline produces a higher temp when burned than methanol. This could be a problem if the engine were broken in first as a glow engine, especially if it is of ABC design. The glow version would not reach the same operating temp as the gasoline version and the wear chariteristics would be different. When the fuel is then switched to gasoline, the expansion of the parts would be greater and may result in a poor piston/cly fit.
I beleive this is correct?
I beleive this is correct?
