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Author Topic: Broadly Bostonian Cookup  (Read 52580 times)
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cd_webb
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« Reply #25 on: January 31, 2015, 11:24:38 AM »

This whole thing sounds incredibly interesting to me, and if it's all the same to those concerned, I'd like to be in on this one.

I've tinkered, off and on, the past few years with drawing plans. I used to have drafting skills that have all but disappeared since the expected standard for a survey plat has become a cad drawing. But in spite of that, I'm still all jack up about designing and drawing my own Bostonian, even if it is based on an already proven, full size design.

This is my second attempt at a working drawing for a 'Bostonian Bombshell'. I'm sure revisions and refinements are inevitable, but there's plenty of time for that too.

Out of the way - modeler having fun here! Grin

David 
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glue_finger
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« Reply #26 on: January 31, 2015, 12:44:54 PM »

Can't wait to see all these new designs!  That will be a real kick.  Smiley
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rgroener
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« Reply #27 on: January 31, 2015, 03:01:39 PM »

Great, every time I check this thread, there is a new participant Cheesy

I've decided to build Petes "the Chub" in this cookup. I just have to build one Wink
Will print out the plan on monday and hope to start cutting some wood soon.

Roman



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Pete Fardell
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« Reply #28 on: January 31, 2015, 04:00:20 PM »

Wow Roman, I'm truly honoured! Needless to say, I'll be VERY interested to see how it goes! Don't hesitate to say if anything's unclear or wrong.
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« Reply #29 on: January 31, 2015, 04:09:45 PM »

Count me in for the Chub too.

Two firsts for me, a Bostonian, and a cookup.

Andrew
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danmellor
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« Reply #30 on: January 31, 2015, 04:55:12 PM »

Hugely tempted to join in once Mr Mulligan is out of the way. I have a couple of ideas; "Einstonian" being one...

Cheers,

Dan.
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Russ Lister
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« Reply #31 on: January 31, 2015, 05:02:54 PM »

You've got to join in Dan!

Look forward to at least a brace of Chubs
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Pete Fardell
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« Reply #32 on: January 31, 2015, 05:05:07 PM »

I'm in serious danger of bursting with excitement!  Grin Grin
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korale
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« Reply #33 on: February 01, 2015, 01:40:06 AM »

Here is the first one I'm thinking of, its a gull wing, pseduo racer type thing
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rgroener
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« Reply #34 on: February 01, 2015, 04:52:22 AM »

Quote
I'm in serious danger of bursting with excitement!  Grin Grin
Pete, cold water helps Grin

The plan looks great, no questions at the moment. But this can change while building. Will ask as soon as I am stuck.
What about the profile change heapcat suggested in the Chub thread... I could build in the modification or build it as indicated in the plan. Dont worry about the beer heapcat offered. You could still have it Wink Building the original version would be fine to for me...

Wohoo.... This will become a huge cookup. Cross my fingers that all of them will finish it! Cheesy

Roman

 
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korale
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« Reply #35 on: February 01, 2015, 05:32:14 AM »

This is a sketch my second option, this is based on the short seamew.
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Pete Fardell
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« Reply #36 on: February 01, 2015, 05:41:00 AM »

What about the profile change heapcat suggested in the Chub thread... I could build in the modification or build it as indicated in the plan. Dont worry about the beer hepcat offered. You could still have it Wink Building the original version would be fine to for me...

Well on the one hand I'd really like to see if, in your capable hands, the original version can be persuaded to fly a little better than mine. The wing profile as drawn is, after all, 'chubby' in keeping with the rest. On the other hand I'd also be quite interested to see if the Hepcat suggested wing mod works any magic. So please make it anyway you like and don't worry if you do decide to change anything. Either way I'll be watching avidly!  Cheesy

(Korale, really liking these suggestions. Any chance of a better look at the model in your avatar?)

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Yak 52
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« Reply #37 on: February 01, 2015, 07:17:52 AM »

Pete, I tend to agree with John - the chubbiness of the wing section is far more of a problem than the chubbiness of the fuselage aerodynamically speaking. Of course that's only going to be proved if someone tries Smiley

Jon
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korale
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« Reply #38 on: February 01, 2015, 07:48:42 AM »

Pete,

the Model in my avatar is a Boston observer, there are a couple of pics and a link to a a youtube video here, http://www.hippocketaeronautics.com/hpa_forum/index.php?topic=10463.msg125151#msg125151

Unfortunately it had an unrepairable crash, I saved the prop, noseblock, undercarriage and wing. It was the best flying model I had, I need to build a new fuselage and tail feathers.

looks like lots of people are getting enthusiastic, I need to make up my mind between the 3-4 designs I want to do and get started. I dont think I will get any balsa cut on this project for a week or two.

Korale
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Pete Fardell
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« Reply #39 on: February 01, 2015, 08:10:06 AM »

Thanks Korale. Not sure how I missed that last year! Nice flight!
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danmellor
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« Reply #40 on: February 01, 2015, 08:54:20 AM »

OK, decision made! My chosen model is not quite Bostonian legal, but it's very close apart from the wing area! The "Whimsey" bipe from the plans gallery. Top wing is 16"x3" and the fus is certainly big enough for the "bostonian box" so what the hell... Added bonus is that it's the model I was planning on building next anyway!

I've just made a start laminating bits, (There is a LOT of that to do!) and poor old Mr.Mulligan may get elbowed out of the way for now...

Cheers,

Dan.
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Pete Fardell
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« Reply #41 on: February 01, 2015, 09:06:00 AM »

Ooh! I REALLY like that one, Dan! (nice colour pic in the plans gallery). Glad someone else is going to be not quite Boston legal too.
Russ, I worked out the average wing chord of Spitball and it still comes out at 3.5 inches. Not to worry though.
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cd_webb
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« Reply #42 on: February 01, 2015, 11:28:59 AM »

Drawing number 3. I'm a bit happier with this one. The more I looked, the more I began to worry about the short nose and balance issues. This last drawing gives a nose that's a little over 1/2" longer, and a tail moment the same amount shorter. Still, a lot of wood a long way behind the supposed CG means expectations of adding nose weight. All ready to start now.

If this turns into a gaggle, I'll be on to the Bostonian Pacific Ace or the Observer.

David
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glue_finger
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« Reply #43 on: February 01, 2015, 12:02:40 PM »

Nearing completion on this Mystery embryo from Volare.  Will go straight into the bananer soon as it's done.  Already have the plan for the BBB from Ratz and the gymn will open this month to fly it if done in time, so anxious to get going on it. 

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ffscale
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« Reply #44 on: February 01, 2015, 12:32:56 PM »

Well, I've started mine - the first fuselage frame pinned down.  I fancied a break from a rather tricky sanding job on a new peanut I'm doing.

I'm not trying to keep this particularly light so stripped some 1/16" square from a heavyish sheet of straight grained balsa I found amongst the stash.

It's going to be fun to see these models coming together - it's ages since I joined in a cookup.

Mike S
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glue_finger
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« Reply #45 on: February 01, 2015, 12:37:52 PM »

Nice drawing!  Quick, too. 
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rgroener
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« Reply #46 on: February 01, 2015, 01:37:49 PM »

Great to see that the first balsa bits are glued together. Now it really starts Grin

cd_web, looks good to me. I am sure you dont have to with an Observer or Pacific Ace.

Roman
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Russ Lister
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« Reply #47 on: February 01, 2015, 02:03:40 PM »

Quote
Russ, I worked out the average wing chord of Spitball and it still comes out at 3.5 inches. Not to worry though.

Pete,
Did you add a '0' into the equation for the wing tip?  Wink
Like you say .... it doesn't matter ... especially for this cookup.
You can see in this photo the length of the tailplane parallel to the body with the Chesty Jeep I mentioned .... this could be declared an oversize wing, but I would have been a bit annoyed if someone did!
Again ... this was just a 'fun' Bostonian. (been in a box for ten years now waiting for a repair ... did actually fly well last throw ... but straight .... and straight into some gym equipment!)

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Russ Lister
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« Reply #48 on: February 01, 2015, 02:05:38 PM »

... I perhaps mention it because it still is that 'itch I have to scratch'! ... this cookup runs until July you say?!
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Pete Fardell
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« Reply #49 on: February 01, 2015, 03:23:11 PM »

Quote
Russ, I worked out the average wing chord of Spitball and it still comes out at 3.5 inches. Not to worry though.
Pete,
Did you add a '0' into the equation for the wing tip?  Wink
Grin Russ, I'm touched that you thought I did any proper maths; I just counted the whole squares on the paper and roughly added the little bits up!

I'd like to see another Chesty Jeep. Deadline was only because Roman suggested 6 months, but we can change it if necessary.
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