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lapo92 |
September 16, 2019, 7:13am |
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Fledgling Member
Posts: 8
Time Online: 5 hours 2 minutes
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As promised, I send the pictures about my new Minimax.
Specs: - Jabiru 2200 engine, new cowlings - new lower fiberglass seat (I'm 1,9 meter tall) - new rod controls on the sides of seat - new tips - carbon reinforcements on wings
Thanks to all the community. I read and see a lot of solutions here! Lapo
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beragoobruce |
September 16, 2019, 9:37am |
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Built an Eros - now I'm flying it! Ace
Posts: 1,068
Time Online: 19 days 11 hours 6 minutes
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Hey Lapo
That is a beautiful Max. I love the way you have faired in the engine - the cowling looks perfect. Good wheels, too.
How did you resolve the weight & balance problems presented by the heavier Jabiru engine? Do you carry much ballast at the rear of the fuselage?
I guess that plane is a lot of fun to fly, with 85hp from that engine.
Congratulations
Bruce |
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aeronut |
September 16, 2019, 12:58pm |
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blue sky and tail winds to everyone Ace
Posts: 1,560
Time Online: 28 days 22 hours 31 minutes
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WOW looks fantastic.Those wing tips must have taken some doing! Congratulations. |
| never surrender; never give-up |
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Cy V |
September 16, 2019, 2:32pm |
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Ace
Posts: 641
Time Online: 14 days 16 hours 49 minutes
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The Jabiru 2200 weight is very similar to the VW. Did you use the V-Max frame? |
| Bad spellers of the world untie! |
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lapo92 |
September 17, 2019, 2:01pm |
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Fledgling Member
Posts: 8
Time Online: 5 hours 2 minutes
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Hey Lapo
That is a beautiful Max. I love the way you have faired in the engine - the cowling looks perfect. Good wheels, too.
How did you resolve the weight & balance problems presented by the heavier Jabiru engine? Do you carry much ballast at the rear of the fuselage?
I guess that plane is a lot of fun to fly, with 85hp from that engine.
Congratulations
Bruce
Thanks to all. About balance: Yes, it's still not very well balanced with 4 kg of lead on the tail... but I was knowing that and the Jab give me really good vibes. I agree that VW is heavier but I'm not understand how the V-MAXs are balanced. Someone can give me some input of the normal situation? I added the counterweights on the elevator in order to balance it, and it feel much better at my opinion. About structure: I've modified an original wing of a 1600 with reinforcements: I closed the spar box on the three ribs near the wing strut and added carbon UD on top and bottom of D-Box over all the wing span. It weight 183 kg empty My impression in flight: The plane is really a joy to fly. I notice that the flaperons give some "rubber" feeling on the stick. Something similar to the effect that I give the input on the root, but to the tip the flap has a torsion and some of force goes away. Also because the controls on ailerons a little bit heavier than what you expect by an ultralight. (I normally fly with faster sport aicrafts and I don't know if it's normal like this!) Thanks in advance for any reply about my impressions. Lapo from Italy |
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radfordc |
September 17, 2019, 4:30pm |
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Ace
Posts: 1,836
Time Online: 18 days 1 hours
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Bravo!
How is the performance? |
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mullacharjak |
September 18, 2019, 8:25am |
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Ace
Posts: 281
Time Online: 3 days 21 hours 12 minutes
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Looks like the most powerfull minimax in history. I am sure it can easily exceed Vne in level flight.
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PUFF |
September 18, 2019, 11:40am |
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Ace
Posts: 1,518
Time Online: 34 days 6 hours 18 minutes
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how are your weight and balance numbers? does it all work out according to plan? |
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lapo92 |
September 19, 2019, 9:02am |
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Fledgling Member
Posts: 8
Time Online: 5 hours 2 minutes
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Hi to all Performance are still to be determined... I fly few hours. I cruise at 75 mph with 2,6 gal/hour of consumption with 2200 rpm. Propeller is too small for the engine, so keep this data as not optimized...
I agree that probably with full power I exeed the VNE.
About balance: With 4 kg of lead I'm at 24% of wing chord. Ciao |
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LSaupe |
September 19, 2019, 9:48am |
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Flight Leader
Posts: 161
Time Online: 1 days 10 hours 40 minutes
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Impressive workmanship. Very nice. You will have to post some shots with it flying through the countryside at some point. |
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cdlwingnut |
September 19, 2019, 6:34pm |
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Ace
Posts: 416
Time Online: 3 days 22 hours 22 minutes
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TreeTopsTom |
September 22, 2019, 5:46am |
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Ace
Posts: 566
Time Online: 26 days 13 hours 37 minutes
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Yep, Very nice looking. SLICK!!! |
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ironnerd |
September 23, 2019, 11:00am |
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Guest User |
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bob.hood |
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Ace
Posts: 225
Time Online: 4 days 18 hours 40 minutes
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Stunning!
Really nice plane, and very well finished. I like the tapered box you've put on the tail end of the fuselage, I guess you've got your 4kgs of weights in there? I also like the reinforcing you've done in the wings to strengthen them, and the balance weights you've put on the elevator, excellent idea, I may try adding balance weights on mine. How much weight did you add on the balance weights?
All you need now is to add aerodynamic covers to the struts and axle and that'll be about it, perfect! |
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lapo92 |
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Fledgling Member
Posts: 8
Time Online: 5 hours 2 minutes
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Stunning!
Really nice plane, and very well finished. I like the tapered box you've put on the tail end of the fuselage, I guess you've got your 4kgs of weights in there? I also like the reinforcing you've done in the wings to strengthen them, and the balance weights you've put on the elevator, excellent idea, I may try adding balance weights on mine. How much weight did you add on the balance weights?
All you need now is to add aerodynamic covers to the struts and axle and that'll be about it, perfect!
Thanks to all! I'm really proud of my Max! No, 4kg are too much to be installed in a lightweight cover. The weight is on the floor on the wood structure below the stabilizer. The cunterweght on the elevator at my opinion are a good step forward for the handling. I adapted the weights trying and changing, so I'm not sure about the exact weight but I think they're 1,5kg TOTAL, so 0,75 kg each side. I will add wheel pants soon. Ciao! |
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Ricardo |
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Videos in UTube: ral1951 Ace
Posts: 2,772
Time Online: 75 days 23 hours 15 minutes
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Awesome! Really nice “ aero” Where in Italy are you located. We would love to see some flying pics. |
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