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Cox Engine of The Month
Little Jumping Bean
Page 1 of 4
Page 1 of 4 • 1, 2, 3, 4
Little Jumping Bean
I built one of these several years ago powered with a Black Widow 0.049.
Never got around to flying it and was wondering how twitchy it would be for someone who hasn't flown U/C for many years.
In earlier years, I successfully flew an Ambroid Whipsaw, PDQ Circus Prince, Jr Nobler, CG Voodoo etc.
Anybody else have one of these?
Never got around to flying it and was wondering how twitchy it would be for someone who hasn't flown U/C for many years.
In earlier years, I successfully flew an Ambroid Whipsaw, PDQ Circus Prince, Jr Nobler, CG Voodoo etc.
Anybody else have one of these?
706jim- Gold Member
- Posts : 472
Join date : 2013-11-29
Re: Little Jumping Bean
i built a few and am building a couple trainers now. that plane is very responsive and the blackwidow has the larger fuel tank. i even added flaps to them for more response.
i would think you would want to start back with something slow and a shorter running engine as i plan to do to get my feet wet again
i would think you would want to start back with something slow and a shorter running engine as i plan to do to get my feet wet again
Last edited by rogermharris on Mon Jul 27, 2015 5:58 pm; edited 1 time in total
rogermharris- Platinum Member
- Posts : 503
Join date : 2015-03-17
Age : 61
Location : Long Branch, New Jersey
Re: Little Jumping Bean
The Jumping Bean is a very good flying airplane. If you were to build another, keep the controls slowed down and all should be fine. Replace the stock control horn with a larger horn minimum of 3/4" and place the pushrod in the hole furthest away from the hinge point. Most bellcranks from the era that the plane was produced (Perfect) for example only utilized one hole which generally gave the bellcrank quite an advantage over the elevator. I prefer to make my own or if need be redrill the pushrod hole as close as possible to the center point which slows the controls down making the twitchiest plane a timid flyer. Combine this with the proper handle with the line spacing no greater than 2" allows for a point and shoot plane. Ken
Ken Cook- Top Poster
- Posts : 5640
Join date : 2012-03-27
Location : pennsylvania
Re: Little Jumping Bean
Rather than starting a new thread, I figured I'd jump on this one.
Coming in a Brodak order this week is a Jumping Bean. I've wanted a regular type 049 plane, but I also need a plane to practice some finishing techniques on. You see, I have a 35-sized Prowler stunt plane on my bench, and will be finished silk and dope. The silk I've done before, but always finished with rattle cans. I don't want to practice dope colors on the Prowler.
Not sure what engine for the Bean, but most likely be an integral tank. I keep seeing aTexaco Tapien Serpent engine .... its got a stunt tank.
Looking forward to the Bean.... and I'll try to fix all the things others have reported in other threads.
Coming in a Brodak order this week is a Jumping Bean. I've wanted a regular type 049 plane, but I also need a plane to practice some finishing techniques on. You see, I have a 35-sized Prowler stunt plane on my bench, and will be finished silk and dope. The silk I've done before, but always finished with rattle cans. I don't want to practice dope colors on the Prowler.
Not sure what engine for the Bean, but most likely be an integral tank. I keep seeing a
Looking forward to the Bean.... and I'll try to fix all the things others have reported in other threads.
larrys4227- Gold Member
- Posts : 338
Join date : 2015-07-23
Location : Lakeland, FL
Re: Little Jumping Bean
I have been up in the air about what to build as my next step up but liked the bean. I would use a black widow though. I have not read up on what to change to improve it.. please do a bit of a build log if you would. May bee it's one to do a modified kit for...
rogermharris- Platinum Member
- Posts : 503
Join date : 2015-03-17
Age : 61
Location : Long Branch, New Jersey
Re: Little Jumping Bean
Do yourself a favor and use a Medallion.
The Brodak kit should come as a beam mount with instructions on how to modify it to a radial mount.
So... If you use a Medallion you won't have to modify anything. The Medallion works well with an external tank and also easier to start and achieve consistent runs.
I have a build thread around here somewhere that chronicles all the headaches I went through before I changed the nose and mounted a TD.
Ron
The Brodak kit should come as a beam mount with instructions on how to modify it to a radial mount.
So... If you use a Medallion you won't have to modify anything. The Medallion works well with an external tank and also easier to start and achieve consistent runs.
I have a build thread around here somewhere that chronicles all the headaches I went through before I changed the nose and mounted a TD.
Ron
Cribbs74- Moderator
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Posts : 11907
Join date : 2011-10-24
Age : 50
Location : Tuttle, OK
Re: Little Jumping Bean
Ron, I believe I did go through a thread with your name on it. I'll need to go back and review as I build.
Are the Medallions available? I don't think I saw them on EX or Cox canada.
Are the Medallions available? I don't think I saw them on EX or Cox canada.
larrys4227- Gold Member
- Posts : 338
Join date : 2015-07-23
Location : Lakeland, FL
Re: Little Jumping Bean
Cribbs74 wrote:Do yourself a favor and use a Medallion.
The Brodak kit should come as a beam mount with instructions on how to modify it to a radial mount.
So... If you use a Medallion you won't have to modify anything. The Medallion works well with an external tank and also easier to start and achieve consistent runs.
I have a build thread around here somewhere that chronicles all the headaches I went through before I changed the nose and mounted a TD.
Ron
Well Ron it looks like I have a lot of reading to do. I see 4 different threads by you on the bean.
Larry. EBay... I just won one for $35 over the weekend!
rogermharris- Platinum Member
- Posts : 503
Join date : 2015-03-17
Age : 61
Location : Long Branch, New Jersey
Re: Little Jumping Bean
Thanks.... I'll have a look.
larrys4227- Gold Member
- Posts : 338
Join date : 2015-07-23
Location : Lakeland, FL
Re: Little Jumping Bean
larrys4227 wrote:Ron, I believe I did go through a thread with your name on it. I'll need to go back and review as I build.
Are the Medallions available? I don't think I saw them on EX or Cox canada.
Not through those sources, although Exmodel deals wirh refurbished engines that are affordable. May be worth a look.
Your best bet would be Ebay, they can be found there new or used. Don't shy away from used units as most parts are available if needed. Often times they just need a little cleaning.
Another option is to post a want ad here, Stuka Stunt and Stunthangar. You may have better luck with the latter as lot's of folks here plan on being buried with their Cox engines...
Cribbs74- Moderator
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Posts : 11907
Join date : 2011-10-24
Age : 50
Location : Tuttle, OK
Re: Little Jumping Bean
I have a huge build thread on the Bean. It might be at RCG. But I knew nothing about building a quality model at the time, and that's the plane that got me on the right track. Boy did i ask some dumb stuff... and resisted advice... man was I hard headed. I'll see if i can dig it up. I bought it when I decided 46 years was too long to have been flying and still not know how to fly a loop.
Meanwhile here are before, during and after pics. See my avatar, guess what that is..
Young and beautiful
Later in life
End of life and resurrection. After having yanked the bellcrank out of the center and cleaning out every inboard rib... in the middle of a loop. Notice the added wing area at the TE and tips.
Reborn as The Refried Bean Norvel .061. Now this is a true pocket rocket!
Meanwhile here are before, during and after pics. See my avatar, guess what that is..
Young and beautiful
Later in life
End of life and resurrection. After having yanked the bellcrank out of the center and cleaning out every inboard rib... in the middle of a loop. Notice the added wing area at the TE and tips.
Reborn as The Refried Bean Norvel .061. Now this is a true pocket rocket!
_________________
Don't Panic!
...and never Ever think about how good you are at something...
while you're doing it!
My Hot Rock & Blues Playlist
...and never Ever think about how good you are at something...
while you're doing it!
My Hot Rock & Blues Playlist
RknRusty- Rest In Peace
- Posts : 10869
Join date : 2011-08-10
Age : 68
Location : South Carolina, USA
Re: Little Jumping Bean
Here's my build thread. Watch me grow from a modeling Doofus to a somewhat decent builder.
http://www.rcgroups.com/forums/showthread.php?t=1422829
And the Refried Bean thread on CEF
https://www.coxengineforum.com/t3359-the-refried-bean-build-it-flies#46324
Both are listed in my RC Groups blog page
http://www.rcgroups.com/forums/member.php?u=313307
http://www.rcgroups.com/forums/showthread.php?t=1422829
And the Refried Bean thread on CEF
https://www.coxengineforum.com/t3359-the-refried-bean-build-it-flies#46324
Both are listed in my RC Groups blog page
http://www.rcgroups.com/forums/member.php?u=313307
_________________
Don't Panic!
...and never Ever think about how good you are at something...
while you're doing it!
My Hot Rock & Blues Playlist
...and never Ever think about how good you are at something...
while you're doing it!
My Hot Rock & Blues Playlist
RknRusty- Rest In Peace
- Posts : 10869
Join date : 2011-08-10
Age : 68
Location : South Carolina, USA
Re: Little Jumping Bean
Nice build thread on RCG Rusty. I've already got a mental list of things I want to change/improve. Yeah, I want it to fly good, but the fiirst reason for this kit is the practice finishing. I also want it for duty if someone wants to try C/L flying. I have no planes currently that will do that .... or willing to sacrifice on a newb/retread. Got lots of time to consider an engine .... I'm still leaning toward something with built in tank for simplicity.
larrys4227- Gold Member
- Posts : 338
Join date : 2015-07-23
Location : Lakeland, FL
Re: Little Jumping Bean
I prefer the engines with separate tanks, so as to avoid the maddening air leaks and unplanned teardowns. But if you go with a new one, Bernie's Super Bee probably gives you the best bang for the buck. http://www.exmodelengines.com/product.php?productid=17877&cat=279&page=1 It has the short-piston type SPI and a hex drive plate so you can use an anti-reverse cam starter(at least in the picture). Matt's Red Arrow is basically an old style Black Widow, but it doesn't have a dual vent stunt tank. http://www.exmodelengines.com/product.php?productid=17877&cat=279&page=1larrys4227 wrote:...Got lots of time to consider an engine .... I'm still leaning toward something with built in tank for simplicity.
Both would do the job of flying your Bean for a good price. I kind of like Ron's suggestion of a Medallion. Super simple, always cranks and has lots of power. Then again, so does the Killer Bee II, http://coxengines.ca/cox-.049-engine-killer-bee-ii.html Just chop half of that yellow extension off the needle so it doesn't vibrate its threads off.
Rusty
_________________
Don't Panic!
...and never Ever think about how good you are at something...
while you're doing it!
My Hot Rock & Blues Playlist
...and never Ever think about how good you are at something...
while you're doing it!
My Hot Rock & Blues Playlist
RknRusty- Rest In Peace
- Posts : 10869
Join date : 2011-08-10
Age : 68
Location : South Carolina, USA
Re: Little Jumping Bean
i read through most of that thread too rusty.. thanks for finding it.
i always like the decal sets and the different way a goldberg kits were went together. the rubber band shock mounted landing gear was cool i thought at the time
here my two favorite 1/2A's from 74 i think.
my blackwidow powered and flapped baby ringmaster and golden bee powered bean. don't recall what the plane was in between them. may have been one of my brother in law's planes. i think that is the one i started converting to a combat wing.... i am lucky to still have these two engines but the planes are long gone.
i always like the decal sets and the different way a goldberg kits were went together. the rubber band shock mounted landing gear was cool i thought at the time
here my two favorite 1/2A's from 74 i think.
my blackwidow powered and flapped baby ringmaster and golden bee powered bean. don't recall what the plane was in between them. may have been one of my brother in law's planes. i think that is the one i started converting to a combat wing.... i am lucky to still have these two engines but the planes are long gone.
rogermharris- Platinum Member
- Posts : 503
Join date : 2015-03-17
Age : 61
Location : Long Branch, New Jersey
Re: Little Jumping Bean
I bet that Baby Ring could just about catch its tail with flaps on it.
Last edited by RknRusty on Tue Jul 28, 2015 5:47 pm; edited 1 time in total
_________________
Don't Panic!
...and never Ever think about how good you are at something...
while you're doing it!
My Hot Rock & Blues Playlist
...and never Ever think about how good you are at something...
while you're doing it!
My Hot Rock & Blues Playlist
RknRusty- Rest In Peace
- Posts : 10869
Join date : 2011-08-10
Age : 68
Location : South Carolina, USA
Re: Little Jumping Bean
I can vouch for the Red Arrow, I have one on my Skyray and it's a strong engine! yanks it around the circle like it doesn't know there's a plane stuck to it but as rusty said, it lacks a stunt tank. (Bandit)
TDbandit- Platinum Member
- Posts : 897
Join date : 2014-12-01
Age : 53
Location : Riverdale Georgia
Re: Little Jumping Bean
My Brodak order arrived to day ..... just a couple of the sundries below.
I've been in search of a ceiling tile to build on, but can't seem to find a single sheet. No, I don't need a whole case Mr Lowe's .... geez, dont they understand that stuff is used for other things than ceilings???
I've been in search of a ceiling tile to build on, but can't seem to find a single sheet. No, I don't need a whole case Mr Lowe's .... geez, dont they understand that stuff is used for other things than ceilings???
larrys4227- Gold Member
- Posts : 338
Join date : 2015-07-23
Location : Lakeland, FL
Re: Little Jumping Bean
Maybe try a local lumber yard, Larry.
They're usually a little more accommodating.
Call ahead.
Bob
They're usually a little more accommodating.
Call ahead.
Bob
dckrsn- Diamond Member
- Posts : 2750
Join date : 2010-10-21
Age : 71
Location : Long Island, New York
Re: Little Jumping Bean
Thanks Bob .... I'll try that too. I was also thinking of stopping by an Ace Hardware .... they're usually pretty helpful.
larrys4227- Gold Member
- Posts : 338
Join date : 2015-07-23
Location : Lakeland, FL
Re: Little Jumping Bean
Lowes sells 24x24 drywall squares for a buck or two each. I tape 4 of them together with blue painters tape, and seal the edges with blue tape too. It works well, but is a bit harder to press pins into.larrys4227 wrote:...I've been in search of a ceiling tile to build on, but can't seem to find a single sheet. No, I don't need a whole case Mr Lowe's .... geez, dont they understand that stuff is used for other things than ceilings??? ...
_________________
Don't Panic!
...and never Ever think about how good you are at something...
while you're doing it!
My Hot Rock & Blues Playlist
...and never Ever think about how good you are at something...
while you're doing it!
My Hot Rock & Blues Playlist
RknRusty- Rest In Peace
- Posts : 10869
Join date : 2011-08-10
Age : 68
Location : South Carolina, USA
Re: Little Jumping Bean
As a last resort, I'll use drywall. I've used it before, and it is nice to keep things flat/straight, but it is a bugger trying to get the pins in. I'm going to exhaust a bunch of options before I turn to it.
My current build has foam core wings, so I escaped having to deal with it
My current build has foam core wings, so I escaped having to deal with it
larrys4227- Gold Member
- Posts : 338
Join date : 2015-07-23
Location : Lakeland, FL
Re: Little Jumping Bean
Found it!
HobbyLobby
1/2" X 10" X 30" Foam board. Both sides have a thin lamination. Boards are displayed flat, and not on end like a couple of other possibilities I saw. These are flat as pancakes with no warp that I could see.
It's a homerun @ $5.00
HobbyLobby
1/2" X 10" X 30" Foam board. Both sides have a thin lamination. Boards are displayed flat, and not on end like a couple of other possibilities I saw. These are flat as pancakes with no warp that I could see.
It's a homerun @ $5.00
larrys4227- Gold Member
- Posts : 338
Join date : 2015-07-23
Location : Lakeland, FL
Re: Little Jumping Bean
[quote="larrys4227"]
I've been in search of a ceiling tile to build on, but can't seem to find a single sheet. No, I don't need a whole case Mr Lowe's .... geez, dont they understand that stuff is used for other things than ceilings???
Are you near any construction projects, strip malls or commercial building sites? I recently got a life time supply of small diameter copper tubes (lead out line guides) out of a discarded air conditioner, I also got a 1/2 full 5 gal bucket of drywall joint compound and enough drywall pieces to patch the water damaged wall and ceiling in my kids bedroom. The school system is spending their building fund money upgrading the fluorescent lights to LED's so their dumpster had all sorts of 2x2 and 2x4 light fixtures and "old" 2 x 4 ceiling tiles that were being dumped.....not recycled.....just dumped. Plus they came out of a "non-smoking building" so they weren't stained. I did not take any cause I didn't need any, but if you look around your neighborhood if there's any construction / remodeling going on you should be able to get what you need, if you want to recycle what others are throwing away.
I've been in search of a ceiling tile to build on, but can't seem to find a single sheet. No, I don't need a whole case Mr Lowe's .... geez, dont they understand that stuff is used for other things than ceilings???
Are you near any construction projects, strip malls or commercial building sites? I recently got a life time supply of small diameter copper tubes (lead out line guides) out of a discarded air conditioner, I also got a 1/2 full 5 gal bucket of drywall joint compound and enough drywall pieces to patch the water damaged wall and ceiling in my kids bedroom. The school system is spending their building fund money upgrading the fluorescent lights to LED's so their dumpster had all sorts of 2x2 and 2x4 light fixtures and "old" 2 x 4 ceiling tiles that were being dumped.....not recycled.....just dumped. Plus they came out of a "non-smoking building" so they weren't stained. I did not take any cause I didn't need any, but if you look around your neighborhood if there's any construction / remodeling going on you should be able to get what you need, if you want to recycle what others are throwing away.
Marleysky- Top Poster
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Posts : 3618
Join date : 2014-09-28
Age : 72
Location : Grand Rapids, MI
Re: Little Jumping Bean
Go to a construction site. We throw out thousands of them. Half the time the other trades aren't complete prior to installation and new tiles are thrown out by the cases due to scuffs. If you can get a Humigard tile, even better. They're a bit softer and will tolerate moisture and dampness. Ken
Ken Cook- Top Poster
- Posts : 5640
Join date : 2012-03-27
Location : pennsylvania
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