Author Topic: European Championships (Read 5622 times)

Tania,
Can you give us any details about the Shark model with the contra rotating propellers? Is one just wind driven or is it also powered by the motor?
Alan Resinger

Igor Burger · « **Reply #21 on:** September 01, 2015, 10:48:03 AM »

It is true kontra prop from Pawel Dziuba, I already posted pictures somewhere, so posting again the same:

Alan Resinger · « **Reply #22 on:** September 01, 2015, 01:43:01 PM »

Thanks Igor. I think I met Pawel either in Pecs, Hungary or Kiev back in 86 and 88. His teammate Petre Zawada and I were good friends. Randy Smith of PA motors fame, had a contra rotating prop on one of his models some years ago at the US Nationals. Only one prop was driven by the motor. It did have a distinct sound. I wonder if he had any unique trimming problems.
Alan

Igor Burger · « **Reply #23 on:** September 03, 2015, 02:22:00 AM »

Yes you can call that sound "distinct" (in IC age), it is better word then "terrible" (in electric age :-P ). I flew his model some monthes ago, for sure it limits precession, however our models are designed with experience of precession, so I think it will need little modified design. His model is inliner, so it is very close to ideal (even with LG and rudder), but it is still heavy, so I think it will need little time to convergate to model which can benefit from contraprop. The other question is life time, we will see.

Duke.Johnson · « **Reply #24 on:** September 03, 2015, 09:24:52 AM »

How about more info on the Gee Bee (R3?). First picture on reply #5

Howard Rush · « **Reply #25 on:** September 03, 2015, 11:13:38 AM »

Quote from: Duke.Johnson on September 03, 2015, 09:24:52 AM

How about more info on the Gee Bee (R3?). First picture on reply #5

Here you go: http://discovery-aeromodels.com/en/gee-bee-r3-control-line-f2b-aerobatic-model-of-yuriy-yatsenko.html .

Tania Uzunova · « **Reply #26 on:** September 03, 2015, 03:25:24 PM »

This is the play list in youtube, where i posted most of the videos.

On some videos i did not put a name of competitor, because i am not sure if i will write it correctly and as well not sure who is who.

Time on time you can refresh the list, because I will keep uploading new videos. : )

Greetings and smile,
Tatyana

Brent Williams · « **Reply #27 on:** September 03, 2015, 04:53:36 PM »

Here is one of Igor's flights from Tania's page.

Igor Burger · « **Reply #28 on:** September 04, 2015, 12:16:00 AM »

Yes, that one with terrible negative loops

:- ))))))))

MikeCoulombe · « **Reply #29 on:** September 04, 2015, 05:02:09 AM »

Igor, you are your own toughest critic.

Author Topic: European Championships (Read 5622 times)

Robby Hunt