Kinda wondering how many RC fans run Gas/Glow engines in the USA or anywhere else. Just a simple yes I do , or yes they run real good. Or tried it, but not much luck. I mean besides test running...do you use them in flying your airplanes? Thanks Capt,n

I've got five airplanes flying with Gas/Glow engines from .90 all the way up to a 48cc twin. Works great.

AV8TOR

Tried, had fun, learned alot, but doesn't run as well as I want to go in a plane so I'm going gas. Thanks all for the help and advice. :-)

Rich

Please help me!!


I have a rc 10 nitro truck and I cant keep it running I can get it statred but can't keep it running can someone please help me I want to play with my truck lol

I converted a 21cc weedeater engine to run on GAS/GLOW, it worked just fine for me but kept deadsticking in the air, problem was i flipped the carb which in turn cut off the pulse line to run the pump, all is good now and i turn an APC 17x6 @ 7200rpm. My friend did a 42cc poulan chainsaw engine and also had good results on GAS/GLOW after he got rid of that clean burn factory stuff and replaced it with a walbro carb.

I'm flying A road runner with A 40 cc poulan on gas glow starts great runns great.

Well Captin!!! what can I say!!! I started this thred years ago and it still getting peoples attention, since then I have converted dozens and dozens of engines for my buddies and myself everything from Ryobis to Echos which are the ones that I like the best, We have converted from 18CC weadeater up to 52CC engines, the secret is to find the right carb and the right tunning, Ive noticed that the walbro WT433 carb is the one that works the best, I will try one with a chinesse carb that comes with the engines that I am selling and see hoew this works, because I can get these carbs directly from china, also it is very important to use the O.S. "F" four stroke plug that's the one that works beautifully.

Aero nut. This input you gave is what can help. The carb you mentioned the WT433 and the engines that may work best. I agree for sure on that right tunning is really important. I try to run this engine at least 3 times a day. In A.M. (cool temps) around 1 PM and about 6 pm. Now this morning it was cool and damp. It ran good to my surprise. A sign of this is when I start it... it runs in the right direction. when it starts and wants to run backwords, even when I get it running in the right direction...it runs un stable! The carb I have is a WT25 with a 333 below that. The Wt number is not that clear...may be another number. Also I will get another OS "F" glowplug. I was hoping to see more input from others. I placed a post in several forums, asking RC folks to post here in this forum what data they may have. It is still early ...maybe with a few more days more people will reply. I have not ran my engine up in the air yet on a airplane...but It looks like the exhaust is not messy like a regular glow engine! Best Regards Capt,n

There just has to be something funky with your setup or your tuning Captain. These Gas/Glow engines just aren't that finicky. The one on my Katana sat for a year without running. I took it to the field, fired it up, let it warm up good, and went flying. No adjusting, tuning; nothing necessary to do once they are setup properly.

Sometimes they will start up in reverse, but to NO ill effects. I have had them start in reverse, and sometimes when I lower the idle to kill it, they pop and take off in the correct direction by themselves!! They then run perfectly, having suffered nothing.

One thing to know is that they do take a little longer to warm up than a normal gasoline only engine. All your tuning must be done with the engine completely warmed up, which might take a couple of minutes or so depending on conditions.

Start from scratch and recheck everything. If you can't make it work, then hey, it's just not for you. Stick to gasoline.

Good luck,
AV8TOR

Av8tor: Please post a list of carbs you are using. Are the wires to glow plugs used for back-up glow at lower RPM? Thanks, Capt,n

As I have told you many times, I have on board glow on my twin that I use only to start the engine. The on board glow is then turned off, and then the bird is flown, once again, without glow power. Why would one use glow power when the engines idle so smooth and slowly without it??

I did this because my power panel will not light both glow plugs without damaging itself, and I do not want to mess with two of the clip on battery type glow starters. So, since it is a big airplane and doesn't even notice the weight of a small on board battery, I did this setup for convenience.

There are no mystery carburetors either. I grab whatever carb I have in my box of carbs that has the size venturi I want to run on a particular engine, rebuild it, install it, tune it, and go flying. The only caveat about carbs is that I have had problems with the Gas/Glow mix and ZAMA carbs, and do not use them for that reason. I have posted this several times. Also, in a very small percentage of the carbs I have used, the regulator lever needs raised slightly to allow the carb to richen enough. I would say I have encountered this less than 5% of the time, but I have also posted several times about this possibility for the benefit of the people in this forum.

There are no secrets, and it is rather ridiculous to insinuate that there are. I freely offer assistance, tips, and information on all aspects of engine conversions all the time here in the forum. I am not the only one here in the forum that has noticed your consistent "bashing" of the Gas/Glow concept. It is for this reason that I suggested that it "might not be for you".

Please do not expect any further responses from me on this subject.

AV8TOR

Av8tor No carb numbers...can you give some carb numbers so I might find one that will work better? It may seem like complaining, but I try to tell any aspect of how a engine runs that I am testing or seen run.. I tell it just how the engine runs on each run..first if I do no adjustments. Then if I change something, I tell what the running is like then. Again not complaining...just seeing if someone else can help what could be done better. Capt,n

Hmmmm.....I'm no rocket scienctist but to me the pic you posted is a plane the would have a cowl on it when flying. So that being said I think he would want a remote glow lead for ease of starting it with the cowl on. People who get all pissy tend to push others away from responding to others topics. I also think you need to start from square one with you engine ie.....carb rebuild kit, new glow pug etc.....How's your mix? Is is the right mix? Is is fresh? There are many differernt things that would cause poor peformance. A lot of times the simple stuff gets over looked. Also how far your glow plug is from the piston will effect timming in some degree. You may need to add a washer or get the plug closer to the pison. This could take some time to get them to run nice on SOME engines.


Snap

Exactly. Thank you snap it.

"candy coat" how an engine runs.... how ridiculous!

For those of you following this mess, here are the airplanes I have flying on Gas/Glow.

Twist 60 3D with Super Tiger .90
Katana 140 (72" span) with Echo 23.6cc
GP Fokker Triplane with Echo 23.6cc
CMP Tiger Moth biplane (78" span) with Ryobi 31cc
GP Giant Big Stik with 48cc twin homemade from Echo 23.6cc engines.
The Giant Stik was also flown for a year with a Poulan 42cc on Gas/Glow.

Once again, no glow power needed after starting.

This is a fairly large investment in airplanes, and I love each one of them. If I didn't trust Gas/Glow to fly them, I certainly wouldn't use it and risk losing one of my nice planes.

I have also converted some Stihl and Homelite engines to Gas/Glow for friends and family and they run fine and they are happy with them.

If your mixture is way off, you will need glow power on until you get close to the correct mixture, just like a pure glow engine. Once you get close, turn off the glow power and finish your tuning. And remember, wait until the engine is completely warmed up before trying to tune. As stated in the Walbro tuning literature, a slightly richer than "ideal" idle setting will often be required for good transition. I find this to be even more true with Gas/Glow, but there are no other "tricks" to making one run.

Nuff said.

AV8TOR

Some of the airplanes are all cowled up and I can't see the carb numbers, and I don't have time right now to uncowl them. But here are the numbers of some that I have used and/or am using.

WT-610
WT-388
WT-174
WT-625

I have to say again though, that I do not select particular carburetors for Gas/Glow use. I quite literally grab one out of my box of carbs, check the venturi size, rebuild it, and run it. Searching out and buying one of these carbs I have listed just to use them on a Gas/Glow engine would be a waste of your money I believe, because whatever carb(s) you are using should work. If you can't get them to richen up enough, just raise the lever in the regulator a slight amount and try again. Also check to make sure the carbs you are using are perfectly clean inside, have a nice, supple regulator diaphragm, etc. (Better just to put a new kit in any carb you are going to use; that's what I do...)

AV8TOR

I finally found that new OS Max 4 cycle plug. I had put it in my Kavan K-50 Twin which I was going to run at a show, which I did not run that day. I looked at each pug in that Twin...and sure enough...a BRAND NEW PLUG! I placed it in my Gas/glow engine. I am happy to say...that new plug was the answer. Instant response from low RPM to high RPM. I am about ready to put this Gas/Glow engine in a airplane. I bet the PRM will be higher yet when she unloads in a dive! Darn...I wish I would have figered out where I put that new 4 cycle plug in the first place. You guys that have been reading....don,t give up if you do not have instant good running. Boy it would be neat to see one of these Gas/glow airplanes flying on "YOU TUBE! Now I can take a short vacation up North to the Upper part of Mich!! Best Regards Capt,n P.S. AV8T0R.. Sorry this thread got crazy...I went back and tried to re-word things for new ones reading this thread.

Yes, I noticed that Captain, and thank you. I got a little "hot" too and I apologize. I won't even say "I told you so" about the OS four stroke plug....

Congrats on your success, and have a nice trip!

AV8TOR

AV8TOR, The 2 plugs I got that are OS 4cycle has a letter H (I think) stamped on them. I wonder why they do not stamp "F " on them, It is hard to read the small letter on mine. The one that was brand new really made the engine run good. maybe the H means HOT! Thanks, Capt,n P.S. Don,t get fuel spray from carb get on plastic eyeglass lens. It makes them go bad. Don,t ask me how I know!

Oh man, sorry about your glasses. I only buy true glass lense glasses. But then the other day I took them off and set them by my airplane, and 5 minutes later stepped on them!! Bummer!

AV8TOR

I am glad that things got squared a way and that everything is back to normal!!!!
Lets keep working guys!!! all of these years have been real fun and joy and a very nice learning experience.
SALUD AMIGOS
Bill Pomplun.
AREO NUT

PS sorry to hear about your eye glasses guys!!!!