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Mama Mia by Joe Birdi

Old 04-15-2009, 04:35 PM
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Johnkpap
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Default Mama Mia by Joe Birdi

Hi I have Just bought a copy or the Mama Mia plan my Joe Birdi, It is a model Builder Plan
Looks easy to build and designed for a R E Engine does any one have a copy of the Issue it was
in or a Index with Year/Date so I can track down one.

Thanks in Advance
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Old 04-15-2009, 05:23 PM
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Default RE: Mama Mia by Joe Birdi

I have the article. I can scan it and email it to you. PM me your email address.

Here is a composite image I made a while back comparing the size of the Dirty Birdie fuselage to the Mama Mia, Quite a difference!

David
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Old 04-15-2009, 07:11 PM
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Default RE: Mama Mia by Joe Birdi

Didn't this end up being the XLT?
Stuart
Old 04-15-2009, 07:21 PM
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Default RE: Mama Mia by Joe Birdi

This plane is much larger than the XLT. It has a very different wing planform, too.

David
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Old 04-15-2009, 07:23 PM
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Default RE: Mama Mia by Joe Birdi

Do the plans have a date? Was this before the XLT or after?
Stuart
Old 04-15-2009, 07:45 PM
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Default RE: Mama Mia by Joe Birdi

From the plan number, November 1980.
Old 04-15-2009, 09:57 PM
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Johnkpap
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Default RE: Mama Mia by Joe Birdi

It should make a good model to take a OS 61 RE also there is lots of room in the Fuse for a big fuel tank and retracts.

Well that is my plan for this model : the other option is to fit a Super Tigre 90 with a pipe it would be balistic.

I am in the procces of gathering supplies before I start to build one. The build should be no harder than a Super Kao's.

Johnkpap


Old 04-15-2009, 10:12 PM
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MTK
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Default RE: Mama Mia by Joe Birdi


ORIGINAL: sc204

Do the plans have a date? Was this before the XLT or after?
Stuart
Several years before. Back then, we were using too thick balsa stocks and models of this size practically always came in heavy. Overbuilt .... I don't think many were built. Never saw one in the southwest pattern circuit which back then was more active than anywhere in the states. Contests typically had 50+ contestants (some 70+) and of all those models, no mama mia

With today's techniques the model can be made much lighter. It is quite large and should be a decent flier

MattK
Old 04-15-2009, 10:21 PM
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Default RE: Mama Mia by Joe Birdi

I bet an AX 1.20 would be a good match.

I've scanned the article. If anyone else wants a copy PM me your email address (never post your email address where it can be harvested).

David
Old 04-15-2009, 11:26 PM
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Default RE: Mama Mia by Joe Birdi

Would the Giant Dirty Birdy from Blue jay Models be the same ship as the Mama Mia?
Old 04-16-2009, 03:42 PM
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Default RE: Mama Mia by Joe Birdi

Thanks David for scanning the article

I will be starting to build one soon

Johnkpap
Old 06-23-2009, 02:52 PM
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Default RE: Mama Mia by Joe Birdi

Look What the Mail Man Delivered today ......

Everything can be found at the right price if you look hard enough

Johnkpap
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Old 06-23-2009, 04:24 PM
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Default RE: Mama Mia by Joe Birdi

Is that a Super Tigre pipe? I have an ST side header. The ID is too small for a Mac's 3/4" pipe. It's about 19mm (.748")

David
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Old 06-23-2009, 05:18 PM
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Default RE: Mama Mia by Joe Birdi

The pipe is a 90 size Super Tigre Pipe NEW Old Stock

The OD with the Length Adjuster is 15/16 inch /24mm

With out the adjuster it is 13/16 of a inch 20 mm My My Macs Header is also 3/4 of a inch A Close fit

If I use the Adjuster pipe I have to use a bit of smaller tube over the Mac's header to make it bigger.

Sorry Dave that header is possibly too small for my Super tigre 90

I am looking for the 90 size header / the Mac's will fit and do the job but not the best choice

http://www3.towerhobbies.com/cgi-bin...?&I=LXFV96&P=7

May also work but I think it should read 13/16 of a inch not 13/32 !!!![]

I am going to power a Mama Mia with my ST 90 side mounted, pipe through the top or along the side.

.....Will have to finish the arrow first... and find more bits first... I need to build a electronic controller for the Retracts!!!


Thanks

Johnkpap
Old 06-23-2009, 09:39 PM
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Default RE: Mama Mia by Joe Birdi

JohnKpap, That header bolts onto a ST-90S perfectly.
It might do the same on your engine.

Ron
Old 06-23-2009, 09:40 PM
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Default RE: Mama Mia by Joe Birdi

Johnkpap,

You might want to check out the MACS 2970,1,2 series headers that are 7/8"-22mm OD if you need the larger diameter. They are also about 3" longer.

Terry in LP
Old 06-23-2009, 09:55 PM
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Default RE: Mama Mia by Joe Birdi

ST has not changed the muffler bolt spacing since the G.60 came out in the late sixties (the older one-piece case V60 has the same spacing as the current .40, .45 and .51). The .61 through .90 all have a 47mm spacing. But, I didn't mean to cause any confusion; my header isn't for sale, I was just "sharing" pictures.

David
Old 06-23-2009, 10:16 PM
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Default RE: Mama Mia by Joe Birdi

I was just looking over the MM plans. The sides are 58.375" long and no seam/joint or splice is shown on the plans. Were 5' balsa sheets available back then? Today, you will have to splice together 48" or 36" sheets.

I pasted an OS .61FX onto the plans (because that's the drawing I had handy) to see how small it would look in the nose. Most .90's today are in .61-size cases, anyway. Or, rather, most current .61's are in 90-size cases.

David
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Old 06-24-2009, 04:21 PM
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Default RE: Mama Mia by Joe Birdi

Thanks for the input David

I should have no problem fitting any thing in this plane, even the Giezendanner Retracts are BIG !! any one else
tried them before ? I am building up a Control unit to operate them via a RX channel direct the instructions sugest using a toggle switch and a servo

I think I can build someting less crude than this, I even have a old AM RX case to put in, if possible I will build i in or two fail safe's into the design
so if the cct fails the retracts come down and run them off a diffrent RX Pack

I Think Only a Crazy Aussi like me would build this one.....


Johnkpap

Old 06-24-2009, 04:44 PM
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Default RE: Mama Mia by Joe Birdi

Guys,

is this huge Dirty Birdy supposed to be flown on a 90!? [X(]

It strikes me more as a 120 AX bird. What's the span and weight?

David.
Old 06-24-2009, 05:22 PM
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Default RE: Mama Mia by Joe Birdi

The original was flown with a Webra 1030 .61 RE.

David
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Old 06-24-2009, 08:23 PM
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Default RE: Mama Mia by Joe Birdi

Mmm... must be a 9 pounder at least.

How about one of these (1039CP)? Nice Dynamix!

David
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Old 06-24-2009, 08:27 PM
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Default RE: Mama Mia by Joe Birdi


ORIGINAL: rainedave

I bet an AX 1.20 would be a good match.

I've scanned the article. If anyone else wants a copy PM me your email address (never post your email address where it can be harvested).

David
I rest my case... the Webra 80 does look like a cool engine though. Almost as cool as my RE 12!

David, would you mind firing me a copy of that article? (I'm pretty sure you've got my address)

TIA, David.
Old 06-24-2009, 08:42 PM
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Default RE: Mama Mia by Joe Birdi


ORIGINAL: Johnkpap

Look What the Mail Man Delivered today ......

Everything can be found at the right price if you look hard enough

Johnkpap
John,

those look like a nice set of Geizendanner electrics. Did you order them directly from Germany/Austria, the US or does someone in Oz carry them? How much coin?

I believe my next big pattern bird will be a 6 footer. I'll probably install a nice set of NOS Krafts (if they ever arrive... [])

What's up with RCU... are we back now to the old format for posting?

David.
Old 06-25-2009, 03:20 AM
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Default RE: Mama Mia by Joe Birdi

Hi David

The nice Retracts were bought on E&@y Auction For $19.50 Plus Shipping from Japan, they sell new for 200 Euro [X(] they are old model shop stock never been used, I just have to build a control unit that is a bit better than a two way switch linked to a servo.

The nice 90 pipe also E&@y Auction for 18.00 Quid from the UK

I have been looking for both of these for a few months, the turned up in the same week !!! I can start a build after the Arrow is finished, I am really getting a bit sick of sanding and sanding ......It better be worth it .... this arrow thing better fly nice.

You can buy them new at http://www.rewomodell.de/

Sorry the site is in german

Johnkpap

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