Author Reverseflush (2 years)
Put a cam on it

Author RejeanBoucher (3 years)
No plans, it was purchased as an ARF (almost ready to fly) kit. It is a Great Plans Giant Big Stik.

Author manugta (3 years)
hi can you send me your plane's plan please ?

Author RejeanBoucher (3 years)
18x8 Dynathrust prop. 7000 to 7300 RPM with 87 Octane 32:1 fuel oil mix. (Your power output will be less if you go with a higher octane fuel) Ryobi crank counter weight is not built of solid stock, therefore it is not recommended to under prop for bench RPM readings exceeding 8000 RPM.

Author dreamwisperer (3 years)
Sir,

do you have any prop/rpm measurements?
I want to replace my OS 160FX on my Giant SuperSportster ARF with a Ryobi 31cc.

Author RejeanBoucher (3 years)
The only data that I can see on the carb is the wording "Zama" in two locations and there is also the number "6" that appears on the edge of one of the covers. The only modification to the carb was to increase the venturi intake to 10 mm and to remove the fine screen mesh filter.

Author skakjk (3 years)
WHAT WALBRO CARB NUMBER ARE YOU USING

Author RejeanBoucher (4 years)
- incl spinner & prop 3.7 lbs, not including CDI module & 4.8V pack for CDI.

- Attaching mounts for ignition coil, etc... were all taken down flush to motors exterior wall body.
- carb 10mm
- Muffler gutted, .6 oz saving
- fin trimming, 2.4 oz saving. Bad idea; mufflers support point no longer in place & thus led to exhaust loosening & once to sheering of an exhaust bolt. Now fly with stock cylinder & everything secure after many flights.

Author hewismayer (4 years)
I was just curious on the weight of your engine with the electronic ignition. And you chopped some of the fins as well looks under 3lbs. Great engine I have an older 28cc and am flying it in a SPAD stick it flys great. I went from an 8mm to 11mm Wabro and the 11mm has a choke. Now I get 300 more rpm out of an MA 18x8 to 7100 from 6800 with the 8mm. My engine is 4lbs on the nose and the plane is 15lbs. By the way nice video!

Author WilberWisdom (4 years)
Very nice!

Author RejeanBoucher (4 years)
It is a Great Planes ARF kit named Giant Big Stik. specs are: WS 80.5 in / WA 1518 sq in / weight 13-15 lbs / Lenght 54.5 in
I bought it from Great Hobbies a Canadian mail order outfit. I am running mine with an 18x8 Dynathrust prop.

Author Gary Flymore (4 years)
hello Sir. I have a converted ryobi 31. can you tell me where you got the plans or kit for your stick? any help would be great. thank you. Gary :)

Author RejeanBoucher (4 years)
When trying to establish the most suitable aircraft for a particular motor size such as a Ryobi (adequate motor but is not on the high end of power) you must go by wing loading. Therefore I would recommend anywhere from 15 to 20 oz per sq ft of wing area. In my particular case, my Giant Big Stiks surface wing area is 10.5 sq ft and the plane weights 12.7 lbs for a wing loading of 19-oz/sq ft.

Proceed to crazyherb on the web and take a look at his design of BigPink for Ryobi motors.

Author junglist1soldier (4 years)
Great work on this Old School plane. Your engine was not as boggy sounding as the first weedeater plane with a ryobi engine,2-stroke. I wonder if all weedeater engines are 2-stroke? I'd think so but, I'm new to this hobby of R/C Planes & I've got myself a 1.20 Biplane, 8 lbs. I wouldn't install a weedeater on it though. I was considering doing this as a side project, & wonder what the maximum weight would have to be, for this to work?
Anyhow, Good Job on this R/C Plane.

Author coshyno (5 years)
how did you convert this engine to be an aircraft engine ???

Author mikenlapaz (5 years)
nice!

Author LordAndersson (5 years)
cool :)