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Author Topic: Newcomer to P30-advice sought.  (Read 1750 times)
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calgoddard
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« Reply #75 on: February 10, 2021, 08:58:10 PM »

Kevin -

I have several comments.

Your piano is very nice.

I really like the bottle of wine.

Your Mk. III is coming along beautifully. Let me reiterate that your craftsmanship is excellent.

I always have a back-up model ready to fly at any contest. Usually my competitors don't.  I have won contests with back-up models used for second and/or third official flights. You need a back-up model in case the first model has flown OOS and not been recovered. You also need a back up model when the first model has been damaged on an official flight. Repairs during a contest are not advisable as usually they take up too much valuable time and/or there is insufficient time for trim flights and you don't know how the model will perform after repairs unless they are extremely minor.  I have also beaten other competitors because they did not have a back-up model. They probably would have beaten me if they had a back-up model.

Oh and I forgot to mention, I have had airplanes land in the water on an official flight, which necessitates flying a different model for the next official flight. Balsa wood absorbs water - who knew? See the attached picture. You can see that the stab of this model pivoted to its UP position so the viscous timer controlled DT triggered, but alas, this model (Buddenbohm Air Shark P-30) landed in a flood canal. It is only filled with water a few weeks out of the year in the semi-arid place where we fly. I am going to switch to RDT for my better models (e.g. F1G) so I can semi-control where they land.

Winning isn't everything but it beats losing.

So you will have two back-up models for any P-30 contest. Bravo!

Kevin - It would be nice if I could fly with you in the UK. I would bring one of my 45 gram P-30's (plus a back-up 45 gram P-30) to fly in your breezy conditions. I have been to the UK a few times but only as a tourist. Lovely country. I have a picture of me at Stonehenge standing next to one of the sarsens before they kept everyone away. My AUW was 10 Kg less at the time. I can put my planes on a diet when I build them.  

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Kevin M
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« Reply #76 on: February 11, 2021, 03:17:19 AM »

calgoddard, Red Buzzard and DerekMc

Thanks for the encouraging comments.

Calg, your model looks very forlorn taking its swim. Back-ups should be useful, you don't have to land in water to get wet models here! One of the advantages of tissue on mylar covering.

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It would be nice if I could fly with you in the UK.

Let's hope that will be allowed in the not too distant future...

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OZPAF
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« Reply #77 on: February 11, 2021, 07:41:49 PM »

A well balanced and attractive design - carefully and skillfully built. Well done Kevin.

Good luck with it and definitely never fly it without a DT!

John
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Kevin M
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« Reply #78 on: February 12, 2021, 04:13:49 AM »

Thank you John.

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definitely never fly it without a DT!

No, in fact I intend to fit wing and stab D/T on the next one.
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Kevin M
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« Reply #79 on: February 13, 2021, 08:35:19 AM »

Well, the Mk. III is now complete. It came out at 43.6g in the end-and could be 1.8g less with my lightest prop fitted. In truth it could do with a little more dope for U.K. conditions, nevertheless I'm quite pleased.
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calgoddard
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« Reply #80 on: February 13, 2021, 09:11:24 AM »

Very nice!
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Red Buzzard
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« Reply #81 on: February 13, 2021, 12:12:14 PM »

Kevin,

Yay! What a nice result. A little more dope would be good for puncture and hangar rash protection. Besides it only gets lighter with time and evaporation. Trimming and repairs will gradually round out your real competition weight and it will be right in there with others. Go get some good air!

RB
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vintagemike
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« Reply #82 on: February 13, 2021, 12:56:15 PM »

Nice model
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OZPAF
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« Reply #83 on: February 15, 2021, 07:10:47 PM »

It looks even better covered Kevin. To my eyes it has a bit of Bill Dean influence in the wing/tail tips - the wing particularly with the nice taper from the last rib to the tip.

Happy flying.

John
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Kevin M
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« Reply #84 on: February 16, 2021, 06:57:58 AM »

Thanks for the kind comments.

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To my eyes it has a bit of Bill Dean influence in the wing/tail tips

Not deliberately John, but I did build an Ace last year so perhaps something stuck subconsciously.

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