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Author Topic: 75% Lazy Bee  (Read 1123 times)
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danmellor
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« on: September 10, 2016, 12:55:41 PM »

Hi All!

Whilst I'm mostly a die-hard F/F modeller, I've been seduced by another R/C build. This is largely to have something to fly when it's too windy for the CO2 stuff.

I have a set of Lazy Bee plans scaled to 30" span. I had an Axi 2208/34 from a years-dead shockie, and have just bought a HobbyKing 20A ESC and a 2S 1600 LiPo. Any advice would be welcome as I am a complete dunce when it comes to the electrickery...

Cheers,

Dan.

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Bill G
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« Reply #1 on: September 10, 2016, 07:48:35 PM »

Nothing wrong with longer flight time, but it's always nice to reduce battery weight as much as possible, unless needed for balance requirements.  I've flown the Alfa FW190 with that motor and GWS HD9050 prop using 3s batts in the 800-900mah range.  These are TP lipos that are not as large as many others, with similar ratings. Good flight times and near vertical performance. The Lazy Bee prop size may be a bit small for 2s however.  The SF props or similar would probably be better for the Lazy Bee and produce more thrust that HD props, but under 8" it may be better suited for 3s.
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danmellor
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« Reply #2 on: September 10, 2016, 07:54:43 PM »

Thanks for that! I was using APC 9" x 3.8" on the last set up, I think the low pitch will suit a Bee..

Cheers,

Dan.
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danmellor
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« Reply #3 on: October 02, 2016, 03:53:40 PM »

All tail surfaces built. I had a bit of a break before I could get to the LHS to buy more wood. I'd forgotten how much wood anything over 16" span used up!

Back soon,

Dan.
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danmellor
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« Reply #4 on: October 20, 2016, 06:14:48 PM »

A bit of progress!

Cheers,

Dan.
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danmellor
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« Reply #5 on: November 03, 2016, 07:40:53 PM »

Current state of play! Just the wing to go before all the fiddly bits...

Cheers,

Dan
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danmellor
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« Reply #6 on: November 06, 2016, 08:51:07 AM »

Most of wing together! Tip dihedral and rest of spars to do. All spars are 3/32" spruce, as I remember how easy they were to break on the last one I built...

Cheers,

Dan.
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danmellor
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« Reply #7 on: November 06, 2016, 08:53:24 AM »

Ribs were cut using the shapes at the top of the plan. 3/16" less chord than the wing plan! All fits on the fus as it should, so I'm not too fussed...

Cheers,

Dan.
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Konrad
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« Reply #8 on: November 06, 2016, 10:44:30 AM »

Is there a drafting issue with the plans? The ribs result in a wing that is too narrow in chord, compared to the wing top view? But fits well when looking at the model's side view?
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Cut it twice and it's still too short!
danmellor
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« Reply #9 on: November 06, 2016, 11:41:44 AM »

Matches the rib shapes, doesn't match the wing drawing. Fits the fuselage as it's supposed to. Chord matches the fus and the side view, just not the wing plan!

Dan.
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danmellor
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« Reply #10 on: November 11, 2016, 07:06:08 AM »

Nearly time for a vigorous sanding session...

Cheers,

Dan.
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danmellor
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« Reply #11 on: November 29, 2016, 11:10:08 AM »

Framework all done, except for final sanding. Bare weight is less than 2 1/2oz, so my target of around 20oz should be easy!

Cheers,

Dan.
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Bill G
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« Reply #12 on: December 01, 2016, 05:28:30 AM »

Looks good.  Should definitely be easy to come in under 20oz, at that weight now.
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Tapio Linkosalo
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« Reply #13 on: December 01, 2016, 06:58:34 AM »

The wing spars are gull-wing shaped. Funny! :-)
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danmellor
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« Reply #14 on: December 04, 2016, 07:35:05 AM »

Bit of a sanding session last night! It's annoying how much of the lovingly laminated wingtips ends up as so much sawdust. All ready for covering, once I've sorted the radio/electrics out. It would be a pain to install after covering as the deep fus. would make access very hard, unless you had the dexterity of a conjuror.

Cheers,

Dan.
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Hepcat
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« Reply #15 on: December 04, 2016, 08:17:04 AM »

Dan,
I hesitate to say this to someone who is well known for his great skill at aeromodelling but the 'Lazy Bee' appears to me to be ugly, badly designed aerodynamically and structurally and about the last model that I would ever choose to build.  Am I missing something? Has it a brilliant performance and a cult following among the cognoscenti?  Smiley
John
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John Barker UK - Will be missed by all that knew him.
danmellor
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« Reply #16 on: December 04, 2016, 08:28:53 AM »

Hi John!

Beauty is in the eye of the beholder, so they say... I've built the 60" version in the past, as well as two Speedy Bees, and it's a superb flier and fun model, despite appearances. Capable of hovering in a 5mph breeze, yet quite aerobatic with the throws turned up. It was certainly a bit of a cult model back when people still built stuff...

Cheers,

Dan.
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Konrad
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« Reply #17 on: December 04, 2016, 01:34:24 PM »

Dan,
I hesitate to say this to someone who is well known for his great skill at aeromodelling but the 'Lazy Bee' appears to me to be ugly, badly designed aerodynamically and structurally and about the last model that I would ever choose to build.  Am I missing something? Has it a brilliant performance and a cult following among the cognoscenti?  Smiley
John
For the most part I agree!!! But, Andy Clancy has produced a line of models that is the exception to the rule. As a sport novelty class of model there is little that can compete with his designs for fun factor. True there are some structural issues in the larger models, like the rudder post. The use of sheet balsa to make tip outlines is pedestrian. But as these are not by any stretch of the imagination "performance type" models the lack of structural efficiency is not an issue.

Now I have to admit I have a soft spot for the design as I've been flying a Lady Bug for 15 plus years.

All the best,
Konrad
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Cut it twice and it's still too short!
danmellor
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« Reply #18 on: December 04, 2016, 01:38:44 PM »

P.S I dunno about "Greatly Skilled"! I'm just too stupid to give up!

Cheers,

Dan.
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