Q-40 Racing Discuss AMA 422 and any other variants of Quarter 40 racing

MUBU II F5D Build

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Old 04-28-2011, 06:54 PM
  #26
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Default RE: MUBU II F5D Build

Where is the champ race this year??
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Old 04-28-2011, 08:13 PM
  #27
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Default RE: MUBU II F5D Build

I believe it's going to be in Ft. Lauderdale.
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Old 04-30-2011, 07:31 AM
  #28
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Default RE: MUBU II F5D Build

Well I pulled the mock up for making a pod and winglets out of the mold and was very happy.

In the pics is how I am expecting things to lay out. All of the components for the pod balance where the two batteries are butted up against each other. That is just slightly aft of the c.g. of the wing which is 9mm behind the trailing edge at the center.

This thing is thin, I am starting to get scared!

D.E.
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Old 05-01-2011, 02:28 PM
  #29
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Default RE: MUBU II F5D Build

Took plugs and my mock up over to Troys to have a power meeting, 20 minutes after I left his house my wife and I were eating lunch someplace nicer than Hemet.

Our dog Sadie also checked out our new summer home!

D.E.
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Old 05-05-2011, 08:59 AM
  #30
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Default RE: MUBU II F5D Build

Hi Dave, very nice work!! Have a question about rubbing out paint. I have a quickie wing that I have to paint the bottom. I sanded it with 1500. then buffed it out with a foam pad in a drill press. I have 2 foam pads the first says "finishing" and I used 3M medium cut with that one, then I used the other one "polishing" and 3M fine cut. The wing looks pretty good now but doesn't have that "wet look". What should I do now? Thanks Bruce
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Old 05-05-2011, 11:33 AM
  #31
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Default RE: MUBU II F5D Build

Hello Bruce,

On the foam pads usually the lighter colored stiffer one is for the first step which is compound. The darker colored softer one is for polishing with what they call a swirl remover. (takes out the micro scratches left by the compound grit) I also think ait would be tough to do on a drill press, but a guy has to do what he has to do.

Get a good carnuba wax and wax it up a few times it will do pretty good. (Pep boys, Kragen auto parts etc. usually has a good selection)

D.E.

P.S. I will probably see you in Whittier, I am just going to visit on saturday.
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Old 05-06-2011, 11:23 AM
  #32
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Default RE: MUBU II F5D Build

Doing a little pod work. First I found approx. cg of drive system. Next was to draw around all the parts giving myself room to shift batteries around to fine tune whole airplane balance. I think I need to mold some little fillers to close gap between pod side and end of elevator. What do you guys think?

Next I will glue some chunks of foam on a profile of 1/16 ply and sand away all parts that dont look like a pod. Should have one roughed in by end of weekend.

D.E.
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Old 05-07-2011, 10:22 AM
  #33
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Default RE: MUBU II F5D Build

Roughed in pod today, Made a profile and glued it into some foam. Cut and sanded all away that didnt look like a pod. Finished rough shape next is to cut wing into proper place and fine tune the shape, figure where hatches need to be and then make molds.

D.E.
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Old 05-07-2011, 05:45 PM
  #34
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Default RE: MUBU II F5D Build

nice, looks fun.
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Old 05-09-2011, 05:25 PM
  #35
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Default RE: MUBU II F5D Build

Yes it is pretty fun.

Third pod will be the charm. I have made two that werent what I wanted, this one will be. It encloses the wing within instead of looking like the wing was just an add on.

I will post some pics after the foam is all shaped, glassed and smooth.

D.E.
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Old 05-10-2011, 06:15 AM
  #36
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Default RE: MUBU II F5D Build

Dave, Will you be able to get your batteries in with the wing in the middle of the Pod??
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Old 05-10-2011, 07:47 AM
  #37
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Default RE: MUBU II F5D Build

Hello Dave,

Yes, the front pack is a 2 cell pack and it will slide under about a half inch but to balance the packs will be about 3/4 " behind that. I am planning on the rx under the wing.

I am going to visit at whittier on saturday and I will bring it along.

D.E.
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Old 05-14-2011, 03:54 PM
  #38
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Default RE: MUBU II F5D Build

This is the pod roughed in ready to smooth and make a mold. Most of the bottom will come off to allow access to change batteries and service.

These pics are for Super T ( couldnt make it to Whittier today,,,, damn work )
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Old 05-20-2011, 09:00 AM
  #39
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Default RE: MUBU II F5D Build

Little slow here in the Q40 area lately. I have only made a little proggress myself.

Made some winglets to the dimensions that the wing designer suggested to start with. He said that the final size should be quite a bit smaller with some time.I willmake some quick molds off of theseso I can start building one to fly using a low power set up so we can see if it is worth spending more time on as a tractor set up. if it doesnt work as a tractor I will not do anymore with it as I am not going to launch one as a pusher with a carbon fibre knife waiting to eat my arm and hand. (it will work)

If it shows some potential I will make a better looking winglet at the final size.

Also some pics compairing size to one of Troy Petersons latest F5D fuses. As you can see the mubu is a little smaller which is good.

D.E.
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Old 05-21-2011, 01:40 AM
  #40
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Default RE: MUBU II F5D Build

Looks good! And yes, you would never find me launching one of those things as a pusher! Also remember that if it doesn't work out, a positive will still come out of it...you'll have more time to get my new Endeavor done for the Champ Race!
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Old 05-21-2011, 06:43 AM
  #41
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Default RE: MUBU II F5D Build

No worrys Gary,

I am starting to paint the one I had for you and the champ race. I am going to use it at the Burgdorf Tribute memorial race at the basin. The last one I finished a while back before I screwed my mold came out 3oz. under so I started to add some strength in a few weak areas. That is a good problem to have.

I am not going to sell any as I dont like the worries attatched and the whinning if something isnt perfect. I can just tell you guys to pound sand.

I will get another done for the champ race New mold is good, but no new wing design,,,yet.

D.E.
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Old 05-21-2011, 05:44 PM
  #42
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Default RE: MUBU II F5D Build

Very cool. Yeah, we need to get some Zonie to cut back on other stuff and get the new wing designed Glad to hear you're going to race at the Burgdorf Tribute!
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Old 06-25-2011, 11:23 AM
  #43
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Default RE: MUBU II F5D Build

It has been a while since I have worked on the mubu, I got a little burned out on models and wanted to do something else for a little while so I worked on the wifes car. She asked what the color would be like so I painted the spoiler real quick to try it out.

First pic is the base that goes under the candy. The SS stripes are going to dissapear in direct sunlight as in the second pic and be very pronounced in the side view as in the third pic.

I have been working on car for the last month or so and think it is time for mubu again.... Boy it is hard to get anything done!

D.E.
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Old 06-25-2011, 11:32 AM
  #44
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Default RE: MUBU II F5D Build

Here are some random pics of camaro and the last car that I built.....Great Fun

D.E.
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Old 06-27-2011, 04:16 AM
  #45
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Default RE: MUBU II F5D Build

Wow Dave, you are a man of many talents..
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Old 06-30-2011, 06:43 PM
  #46
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Default RE: MUBU II F5D Build

Dave,

Nice work!! You definately are the MAN!!! Way cool.

DK
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Old 07-04-2011, 08:19 AM
  #47
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Default RE: MUBU II F5D Build

Dave, I had no idea how talented you really are! Do you ever sleep? Cars, R/C, model development; how do you do it all?
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Old 07-04-2011, 09:21 AM
  #48
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Thanks all,

DK, I had no idea you were a car guy, I was born into it as I grew up around all kinds of car racing. My dad had a top fuel car back when it was doable by "car guys" now it is just buisness men making a living and to commercial.

The time thing is a problem and I think now is a good time to get my wifes camaro done. It will take me about 6 months as a simple project has grown into a more complicated one. I have packed all of the model stuff up and will break it out again late winter. By then I will be sick of cars again and fall back to my love of models.

D.E.
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Old 07-04-2011, 11:58 AM
  #49
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Default RE: MUBU II F5D Build

You said that the last time


BV
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Old 10-09-2011, 09:55 AM
  #50
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Default RE: MUBU II F5D Build

Just a little progress report. CANT WAIT TO GET BACK TO MODELS! Got some good ideas for the MUBU thinking outside the box, We will see how it works. If it doesnt work for F5D it will be fun to go beat up on some turbines with. Also some tweeks to do on the Endeavor which will require some new molds.

As for the current project it should be done in a couple more months. It is ready to sand, paint and re-assemble.
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