I have thought that the Avia B-534 would be a good candidate as a 75% scale reproduction and I just found that a Czech has built one. Here's a link to some photos:
: http://www.gonzoaviation.com/clanok/avia-b-534-v-kategorii-ultralight#sthash.RN4NFDGc.dpuf
And a translation of the specs:
Avia B-534 in category Ultralight
Staviteľom Avia B-534 / OK-01 is QAB Standa Fiala, thank you for material Poky dream.
The size replica of Avia B-534 to 70% of the original
Certification in the category - ELSA
Max TOW - 410 kg
Margin - 6.49 m
Length - 5.69 m
Height - 2.45 m
Empty weight - 260 kg
Cestovná IAS 120 and 130 km / h.
Drive - Walter Mikron
Experts from the Technical University measured the burden of the entire support system / max. Load - 1339 kg
Data provided p. Stanislav Fiala - builder replicas
Avia B-534 v kategórii Ultralight
Vince Homer
: http://www.gonzoaviation.com/clanok/avia-b-534-v-kategorii-ultralight#sthash.RN4NFDGc.dpuf
And a translation of the specs:
Avia B-534 in category Ultralight
Staviteľom Avia B-534 / OK-01 is QAB Standa Fiala, thank you for material Poky dream.
The size replica of Avia B-534 to 70% of the original
Certification in the category - ELSA
Max TOW - 410 kg
Margin - 6.49 m
Length - 5.69 m
Height - 2.45 m
Empty weight - 260 kg
Cestovná IAS 120 and 130 km / h.
Drive - Walter Mikron
Experts from the Technical University measured the burden of the entire support system / max. Load - 1339 kg
Data provided p. Stanislav Fiala - builder replicas
Avia B-534 v kategórii Ultralight
Vince Homer