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Free Flight Ray Malmstrom Skygipsy with AE 0.2cc


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  • 4 years later...

Fast forward to November 2020. I have enlarged the plan to 54" span, and intend to go from free flight to rc 4 channel, an interesting project in lockdown.

Currently thinking of an old OS 25 FP to power it, but have OS 40 LA in the cupboard if required

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Edited By Dave Cunnington on 24/11/2020 22:05:07

Edited By Dave Cunnington on 24/11/2020 22:06:11

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  • 4 weeks later...

A classic model Dave, a good idea to supersize it. yes I have Christian Moes electric Sky Gipsy twin plan from RCMW mag - too many models and not enough time!

Just a question. Is the extra balsa platform raising the tank position necessary, as from the photo the centre of the tank looks well above the carb spraybar? I may be wrong 1) because the photo is deceptive 2) I am not really an engine man 3) probably doesn't make any difference anyway! I only queried it because I was concerned that a high tank position might flood your inverted engine. Also your inverted engine installation could potentially make disconnecting the glow clip after engine starting a little tricky. Just a thought smile d

 

Edited By Piers Bowlan on 20/12/2020 05:55:54

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Very good thoughts, Piers, thank you.

In my limited flying experience I have only ever used upright engines. This one is inverted, which looks better, and means the sticking up engine head is not the initial point of contact in a "whoops" arrival.

Yes, I am planning a remote connection for the glow stick.

Regarding tank level, the current "floor " for the tank looks right, but I can always remove it after a final assessment.

I am building everything internal onto this one fuselage side before adding the other.

Regards DC

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Another alternative Dave would be to mount the engine 'sidewinder style' which would might avoid damage to a sticking up cylinder head as well as obviating the need for a remote glow stick, but I expect you already considered that. It might also be an idea to drill a hole in the front ply former too before assembly, should the battery needs to go in the nose. Hope you don't mind me adding my 2p worth.

Yes, I am doing the same thing with my Spateman build and adding it all onto one fuselage side before adding the other as I won't be able to get my fingers in after!

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Any 2p is gratefully accepted Piers !

Yes, sidewinder is an option but I preferred either up or down........whatever, it can be a late decision, and the sidewinder would lift the carb up a bit , and also give room for a bigger pilot.

Just for entertainment I've been playing with ideas. My son has a 3D printer and will provide me with a Dan Dare Pilot and a Mekon for the passenger compartment, so I wondered how it might look !

img_6656.jpg

Edited By Dave Cunnington on 20/12/2020 15:45:46

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Posted by Piers Bowlan on 20/12/2020 05:28:37:

I am not really an engine man 3) probably doesn't make any difference anyway! I only queried it because I was concerned that a high tank position might flood your inverted engine.

It may seem counter intuitive but an inverted 2 stroke is less likely to flood (or suffer hydraulic lock) than one mounted upright.

 

Edited By PatMc on 20/12/2020 22:17:22

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  • 5 weeks later...
Posted by PatMc on 20/12/2020 22:15:33:
Posted by Piers Bowlan on 20/12/2020 05:28:37:

I am not really an engine man 3) probably doesn't make any difference anyway! I only queried it because I was concerned that a high tank position might flood your inverted engine.

It may seem counter intuitive but an inverted 2 stroke is less likely to flood (or suffer hydraulic lock) than one mounted upright.

Edited By PatMc on 20/12/2020 22:17:22

Yeah, of course. And the moon's made out of green cheese.

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