RE: Spoiler/Big Boy family and friends

RE: Spoiler/Big Boy family and friends
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RE: Spoiler/Big Boy family and friends - 3/7/2008 4:21:29 AM

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Joined: 3/29/2002
From: Waxhaw, NC, USA
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oh....forgot to mention...I build planes to fly engines that I like. Not the other way around.

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Lee

(in reply to RCAddiction)

RE: Spoiler/Big Boy family and friends - 3/7/2008 6:01:26 AM

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From: Symsonia, KY, USA
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Lee,

I'm not familiar with that engine but a 1.8. That should be wow on the power scale if the weight is only 6 oz more. You could probably employ some lightening mods on the air frame to compensate for most of the weight. I'm interested, please let us know how it works out. This is what this thread is all about, discussing all aspects including different set ups.

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Bill

(in reply to RCAddiction)

RE: Spoiler/Big Boy family and friends - 3/7/2008 11:42:05 AM

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From: Waxhaw, NC, USA
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It is a gas 1.8, it is not quite as powerful than the OS 1.60FX and it weighs more. But I like gas and I really like this engine. The engine is a Wolf Predator 1.8 Model B, which was manufactured by AJ Engineering in Wisconsin until 4 yrs ago. Based on a modified 30cc Homelite jug, it has a polished CNC crankcase and is piston ported, with C&H Syncro Spark ignition. I also have a rear induction Wolf 1.8, but it weighs a few oz more. The Model B engine has only a gallon or so through it so it's not making it's full potential power yet. It will swing a 19x8 well, but I'll use a smaller prop on the Spoiler. Essentially, I'm planning to use the Spoiler to break in the engine, as well as to have a lot of fun. Wing loading should not be much different than my JBB with the G23, and that plane is a butterfly and lots of fun to fly.

I'll move the RX battery back (inside a hatch) and keep the tail servos mounted in the rear to minimize the total weight.

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Lee

(in reply to WILDCRASHWILLY)

RE: Spoiler/Big Boy family and friends - 3/7/2008 12:08:16 PM

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From: mayfield, KY, USA
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wow! 6 oz thats light for a gas engine. does that include a ignition battery and everything? i played with a 3W 28cc gas engine on a different airframe(73" QQ Yak) for awhile and it was a great runing engine but added over a pound to the plane and killed the 3D performance. the 160 added a bunch of power and kept the wing loading way down. the spoilers have very light wing loading so they handle a little added weight better than most planes but you can still tell a big difference in a few oz's. a persons flying style makes a lot of difference as to how much the wing loading will hurt though.

rr

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RE: Spoiler/Big Boy family and friends - 3/7/2008 12:14:36 PM

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From: Waxhaw, NC, USA
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An OS 160 weighs 33 oz, plus 9 oz stock muffler, plus 5 oz nylon motor mount. That's 47 oz and my lighter Wolf 1.8 weighs 53 oz all up, including muffler, ignition and won't require standoffs in the Spoiler.

Yes, I'm sure the JBB would have performed better with an OS120 or 160 than my G23EI, but I am very happy with it. Maybe I have low expectations? Wayne Geffon has flown my JBB and thought it was a blast. My assumption is that with the Wolf, the Spoiler should be similar, but more powerful.

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Lee

(in reply to randy racer)

RE: Spoiler/Big Boy family and friends - 3/7/2008 12:18:33 PM

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P.S. what makes the jbb and the spoiler such a great airframe is that it will work great built light and flown like a big funfly plane and with many engine options. but a little heavy will still fly good and it can be set up to fly like a trainer. i think it is a better first plane than a trainer myself, after you get the hang of flying you have a plane that can go to the next level...and the next level.......and the next level....you get the idea.

randy

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RE: Spoiler/Big Boy family and friends - 3/7/2008 12:25:54 PM

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Lee i did the P.S. post before i saw your last post(do you ever sleep?). i am not trying to talk you out of anything and look forward to hearing your flight reports. i would love for a bunch of the big boy/spoiler flyers to get together this year and check each other setups out. most of us run a Mac's header and mousse can pipe that is lighter than the stock muffler and make much more power,also a washer motor mount that save a few more oz's. maybe spoiler man will jump in here with the weights.

rr

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RE: Spoiler/Big Boy family and friends - 3/7/2008 12:52:58 PM

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Joined: 1/7/2003
From: benton, KY, USA
Status: online

Spoilers fly great with a 120 size engine in the weight range of 9.5 to 10lb. Will hover and have good pull out with this set-up. Normally we run the 10-10.5lbs with a OS 160 and they hover and have great pull out. A 12 lb spoiler will hover with a 160 but not alot of pull out. OS160 with washer mount, header and beer can will weight 41 to 45 oz. The last spoiler that I built was the white one with Elmer Fudd in the middle, I flew for it last year some with a TT 120 washer mount, beer can and the total weight was 9.5lb. and it flew great, now I have the 160 rebuilt and back on it still weights a little less than 10lb and awsome power. Most that I have seen with small gas engines don't have enough power to hover and pull out great. This plane was designed around a 120 to 160 glow engine, before the 160 came out we would run them on webra 120s. The BB and Spoiler were designed from the same wing as the Competition Fun Fly airplanes that Jerry used for competition. The wing design(by Robert Vess) will not stall near as quick as other designs, that is what makes it such a great flying airplane.

Spoiler Man

(in reply to randy racer)

RE: Spoiler/Big Boy family and friends - 3/8/2008 1:55:14 AM

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Spoiler-Man - what is a washer mount? Can you point me to a post with a photo?

The plans for my kit built JBB (the one in my Avatar) showed a 2 stroke of approx .77, displacement as I recall. I assumed that was the engine it was originally designed around, no? And you are correct that with the G23, it will hover and pull out, but not aggressively. It's ain't no profile, that's for sure. But I would give up a lot of my other planes before I'd ever let go of my JBB.

Randy - Sleep? Wazzat? Seriously, I get a solid 5hrs per night! From 12:30am till 5:30am.

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Lee

(in reply to spoiler-man)

RE: Spoiler/Big Boy family and friends - 3/8/2008 3:33:54 AM

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Lee, they almost always say use a small engine on the box and if you do it will have almost enough power

. on the JBB i ran a 91fx on a header and pipe and it did a good job but a 120ax is a hot rod. your planes will fly with the gassers on them but if you tried yours then went to a 160 fx i don't think you would go back, the lighter wing loading and higher horse power will spoil you on a spoiler. haha!

now i'm going to bed, i need my beauty sleep.

rr

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RE: Spoiler/Big Boy family and friends - 3/8/2008 12:24:56 PM

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Thanks, Randy. You are surely right that'd I'd giggle with a 160FX. I once had a funfly profile (OMP Katana 40 size) on a Jett 50BSE (bar stock rear exhaust) race engine with a pipe. It would have made an OS 55AX look anemic. Besides having ridiculous power for its size, and having a gorgeous CNC case, the Jett 50BSE had the best throttle response I've ever experienced in a gas or glow engine. It was as smooth, linear, and quick as an AXI electric (but insanely loud!) Frankly, it was exhilarating to rocket vertically out of a hover as if the plane had no weight at all. That engine was insane. But I sold it.

My priority at the moment is to try and fly a variety of small gas engines (50cc and smaller) because I find them to be fun for me. I'm an "ok" pilot but a much better engineer and tinkerer. So don't feel bad if I'm not optimizing the Spoiler for best power-to-weight ratio. That is actually not my intent. However, I truly appreciate your advice. It's honest and from the heart.

Stated Goal - It is NOT to necessarily have the best flying Spoiler. My goal is to use the Spoiler as a vehicle to carry an engine that I really like. That's what is most important to me....to find the best plane possible to have fun with my 30cc Wolf 1.8.

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Lee

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RE: Spoiler/Big Boy family and friends - 3/8/2008 3:36:21 PM

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Lee i agree that the spoiler will be a great choise for your goals with the small gassers. keep us posted and maybe we can get together someday and compare notes.

rr

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RE: Spoiler/Big Boy family and friends - 3/8/2008 4:21:20 PM

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From: houston, TX, USA
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Howdy Friends!!
i have a Jerry's Big Boy ready to maiden except for rerouting the throttle to my Brillelli 26GT gasser. I had a problem with the original Zama and replaced it with a walbro but it is set up a little differently ( I can't say enough good about Brillelli, their customer service is fantastic). I want a Spoiler too, so I will be following this thread to see when they arrive and how well this ARF does. I wanted to find a set of Spoiler plans and build one, but no luck. I always seem to want to do something to an ARF that would be a lot easier with a build kit, Like putting servo boxes and a battery compartment in the tail of the JBB to help balance the gasser up front. I might build the Spoiler ARF EXACTLY like the reccomendations suggest

! I know you're wondering if there is a question in this diatribe and here it is ... Would a Saito 1.80 be a good choice for a spoiler? I notice most JBBs are running OS/YS in the 120/160 size.
Mike
PS thanks everyone who has helped answer my questions, etc. on the Big Boy thread.

(in reply to randy racer)

RE: Spoiler/Big Boy family and friends - 3/8/2008 8:15:35 PM

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From: , IN, USA
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MIKEKEOSATKA

I started out with a YS 140 on my spoiler and it was great, but toook the ys 120 off my big boy and put the ys 140 on it . I put a OS 160 with a header and mousse can pipe and i love it even more. I think if you search the forum the 160 with a can is the best set up.

(in reply to mikekosatka)

RE: Spoiler/Big Boy family and friends - 3/8/2008 8:31:30 PM

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there are a lot of different engine combos that would work on the spoilers and JBB but after all of the testing that has been done here in KY by several people before me the 160 OS is king on the spoiler and the 120ax on the JBB. it's all fun so run what you have and let us know how it turns out.

rr

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