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Old 10-05-2006, 08:38 AM   #11
Kevin McGrath
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I am not knocking the G62 but one of the problems with slim nosed scale models is the fact that you would have to carve holes to accomodate the muffler and carb which mount on opposing sides on the G62.
An engine like the ZDZ uses a rear rotor intake and a Pitts type muffler allows it to be mounted with no cowl butchering at all...........usually.
Dunno what size motor the kit calls for but ZDZ make 40,50,60 and 80cc singles.
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Old 10-06-2006, 10:04 PM   #12
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Thank You for your feed back. The B.B. Doll calls for a 41 to a 70.
Pretty wide. I have a tendincy to go high power. My thoughts are that
" you can always throtle back ". but you can never have too much power.
Given you think ( anyone out there ) would the new ZDZ
super 80 be too much power ?? I have read that the 41 is just a little under powered. Soooo what to choose ??
If anyone out there was at the " Flying Dutchman in K.W. they would have
seen the BF109. It was great and went like a cat on fire !!! do not know what the engine was in the 109 but would sure like to know, if anyone can help great.
Any feed back would be great as well.

Thank You
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Old 11-28-2006, 07:17 PM   #13
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well as mentioned earlier, you can never have to much power, although powerful engines can also carry a weight penalty. Some of the newer technology engines are light weight and very powerful and do not penalize you although sometimes you want that added "usable" nose weight such as is the case with some biplanes and some warbirds. The best thing to do is ask in these forums for people with experience with certain aircraft, but remember it is their opinions, sometimes they are not always the best choice for you!
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Old 12-02-2006, 05:35 PM   #14
Mike Emilio
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Re: Gas engines for big planes... Where to start.

Originally Posted by jpmodels
. . . . I had a box of old weed-eater engines... I'm looking for something a lot better than that. Or is it all the same thing?

US Engines, Zenoah, and the like are nothing more that adapted weed eaters.

You can actually just buy a Redmax weed eater and voila! out pops the exact Zenoah engine that hobby stores would rake you for.

As said by many above. It's better to stick with engines that were specifically designed with aircraft in mind, Like ZDZ, DA, etc, etc.
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Old 12-03-2006, 08:17 PM   #15
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Old 12-03-2006, 10:24 PM   #16
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Personally for a smaller gas engine you will not go wrong with any of the Zenoah engines. The new Zenoah G20i is beautiful running gasser as is the G26 which I am currently using in a 80" Trainer type high wing plane, which by the way will do most of the aerobatic manovers reasonably well with this engine. (ie: Stoney Creek IMAC summer 06)

If you want to keep costs down and you don't need unlimited vertical performance then these engines are great. If you need a full performance type engine then by all means, the DA50 is tops. I'm using a DA50 in my new 85" AW Extra 260 for IMAC competition. The G26 will be going in a new 96" scale Cessna 150 Aerobat which will be a great combo for this type of plane. The Cessna has flown with the G20i and flys very scale like so don't underestimate the power of these small gassers.

And yes they are similar to a weedeater engine but they have been designed & built especially for model aircraft. Similar - yes.... but definitely NOT the same as a weedeater gas engine! MHO!
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Old 12-04-2006, 11:26 AM   #17
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To go along with Gary's comments and if you are in a low budget situation I would be more inclined to go with a chainsaw conversion if you can find one. One differance is the crankshaft. They are a usually a full crank with bearings on both ends with bearings on the rod (wrist pin and crank). They also have larger carbs for breathing.
Not knocking any motor as they all have some differances and some of the engines like the DA's are built for RC. Some are also modified with the same cylinder, piston, crank, combination with a cnc crankcase/mount and electronic ignition added for our purpose.
It all comes down to how much you want to spend or what you want to spend it on.
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Old 01-04-2007, 09:43 AM   #18
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Originally Posted by Gary Maker
Personally for a smaller gas engine you will not go wrong with any of the Zenoah engines. The new Zenoah G20i is beautiful running gasser as is the G26 which I am currently using in a 80" Trainer type high wing plane, which by the way will do most of the aerobatic manovers reasonably well with this engine. (ie: Stoney Creek IMAC summer 06)...
Hello Gary:

Happy New Year.

I realise that this post is now one month old, however, I would appreciate some advice about the G20ie or G26. I recently purchased a 71" span FW-190 ARF in which I want to install a gasser - this will be my first foray into the world of gasoline engine powered models. The FW-190 is supposed to end up weighing around 10 lbs, according to the specs, but I think that 12 lbs will be more realistic. I was considering installing one of the two engines mentioned above. I can justify the extra weight of a gasoline engine, because the short nosed FW-190 is normally tail heavy, thus requiring nose weight anyway - might as well use a heavier engine rather than simply mount a hunk of lead Anyway, in your opinion, might the G20ie have enough power for this set-up? Also, how important a consideration is an EI engine compared to one with a magneto?

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Old 01-27-2007, 12:48 PM   #19
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Hi Guys: I think most engines are pretty good today. For price you cann't beat Zenoahs. Got a T.F. Giant Must. with a G-62 in it - lots of power. Was going to convert it to EI but needed the weight to balance the plane. Might not be as easy to start as an engine with EI { I have several of these as well] but are easy to start after you have them figured out. I can usually start any of my 62's 1st or 2nd flip if its primed right. I think [from experience] the 62 has about the same power as a DA or ZDZ or other 50's but a lot cheaper. Now we sell a G-62 for under $500 Can. - pretty hard to beat.

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