Boomers!! Parkflyers for Beginners to Pros! Vid post 125 - Page 10 - RC Groups
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May 13, 2007, 12:17 AM
Some call me the other guy!
DoctorAudio's Avatar
Butch, What is the lentgh of the booms on the wildCat. What is the depth of the boom going into the fuse? Thanks, Elvan!
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May 13, 2007, 01:14 AM
Registered User
The booms can be different lengths. On the IPS version, they are into the wing 3.5" and on the outrunner version 4" for a bit of extra strength, since it has more power.
The booms stick out just enough for the vertical tail, about 5"-5 1/4". If your trying to go the slowest, then I cut them just about 1/4" short of the end of the tail.
The spread of the booms, depends on your motor and prop dia. Butch
May 13, 2007, 01:37 AM
Sopwith Camel's Cousin
Originally Posted by Butch777
... from and several of his other planes and wings.
What I'd like to find is some 1LB EPP or less. ...
I forgot about your Slo-Cat.
1LB EPP. That I have yet to see for sale. I normally see the 1.3LB variety.
May 13, 2007, 02:11 AM
Registered User
I did just find a foam dealer that said they could special order white 1.0lb EPP. I may pick some up, but it would be nice to find it in black to keep the Boomer looking the same. Butch
May 13, 2007, 01:55 PM
Sopwith Camel's Cousin
Originally Posted by Butch777
I did just find a foam dealer that said they could special order white 1.0lb EPP. I may pick some up, but it would be nice to find it in black to keep the Boomer looking the same. Butch
If you do not mind a "zebra" look,
you could make the fuselage with the lighter white EPP in middle
sandwiched by the heavier (but thin) black EPP on the sides.
Then it would look black from a sideview (but not from the front, top or bottom).

On another topic, 2 posts back, the lengths of the CF were given.
What is the diameter and are they solid rod or hollow tube?
My guess would be 2 millimeter solid rod. Thanks.
May 13, 2007, 02:35 PM
Registered User
The Carbon fiber booms, that we use for the Wild-Cat Boomer, come with the WildWing kit. Since were not building a speed version, there not needed as spars.
There about 3.5mm tubeing, not solid rod. Butch
May 13, 2007, 03:22 PM
Sopwith Camel's Cousin
May 13, 2007, 03:52 PM
Some call me the other guy!
DoctorAudio's Avatar
Butch I want the second plane in post #7,how do I get one of those?
Thanks, Elvan!
May 13, 2007, 05:02 PM
Registered User
That was the first scratch built Boomer. The wing was 9mm EPP with carbon fiber rods, but still flexed alot(too much) on windy days. The wing needed to be stiffer so thats why we started using flying wings like the WildWing.
Just to buy a set of EPP core wings costs about $20.00.
And the Boomer design needs either swept wings or a really long nose to keep a good C/G. So the Flying Wing cores are the cheapest way to build one. Butch
May 13, 2007, 09:22 PM
Registered User
NoThreat's Avatar

Parts and Parts


I read all through the thread, and sicne I am a bit of a beginner there was some greek in there.
I am on old model builder and am interested in building one, but in trying to develope a "parts" list I got confused a bit. (tot he point of needing to lookup IPS for the IPS version.)

Anyways here is what I have, and I am kinda looking for a what to get post if that isn't too rude to ask.
I have:
$144 cash money
Futaba 6EX computer radio. (and rx,
1500 mah lipos 8c 3s 11.1v
C35 electricfly esc
several 3110 servos
ucando 3d arf kit that I have only crashed so far. (cant get the CG right and it is too twitchy for me)
there is a geared brushed motor (280 size equipped with ball bearings and 5:1 gearbox pre-assembled (50 tooth spur and 10 tooth pinion)
But I have money to get a motor

so assume I grab a wildwing from hoppy people, or two maybe.
in simple terms, what would i need to get started.
I would want to do the IPS version, from what I have read in the post.
this may also help thsoe looking to build at least one version of the boomers..

May 13, 2007, 10:02 PM
Registered User
Hi John,
What type of flying did you want to do?
The IPS version flys real good, if built light.
In order for even the IPS version to fly well, I had to run the IPS on a 3 cell lipo 340mah, so its light and the ESC is only a 5 amp, the servos are Pico 6 grams and the rx is a micro style, 5-7 grams. Flying weight is around 6.5ozs and the IPS puts out about 5.5 ozs of thrust.
Whats the weight of your servos and rx?
Your batt and ESC would be a bit heavy, unless you ran a outrunner. Butch
May 14, 2007, 08:45 PM
Registered User
NoThreat's Avatar
I am looking to do some slower flying, like the slo cat (wish the wing was available)

But maybe call it medium speed flying with some aerobatcis, basic stuff.

crashibility is key since I am a newbie flyer..smallish area. 60 yds wide by 100 long field.

the servos are micros, closest i saw was 7.8 grams each
the rx is a micro also.

at the very least I should be getting a wildwing though correct?.
I can order that and go from there..

May 14, 2007, 09:14 PM
Registered User
The WW flys just about as slow as the Slo-Cat. There's only about 1/2oz difference between the two..
Your micro servos will do fine, around 6-9 grams is good.
If you think your going to get 2 WildWings, get them at the same time. Hobbypeople gives you a real good rate on the second plane.
What motor do you think you'll run?? The IPS or a outrunner? Butch
May 15, 2007, 12:15 AM
Some call me the other guy!
DoctorAudio's Avatar
I was going to use a 400XT motor on mine but, A freind is not finish useing it. So I think I am going to get the 24 Gram motor from United hobbies! Well I don't know, what I want to put on it. I am going to try and get my stingRay going tonight. If I can get that in the air tomorrow there goes the IPS setup. It reall looks like, I am going to need a about 6 more motors and 4 mor e thunderBirds 18's maybe 2 9's. Well, I love to fly fast and slow.
May 15, 2007, 10:23 PM
Registered User
If you use the Esskay, you'll need to beef it up a bit.
The 24 gram outrunner works great. On a 2 cell, its fine and has vertical. On the 3 cell, its great and will climb to a dot in a few seconds. And even on a 3 cell, its still light enough to not need any reinforcement. I'm using the UnitedHobbies light ESC with it as well on a couple other planes and so far it works great. Butch

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