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Bryant Percival Gull 6 E conversion

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martin collins 114/06/2019 19:39:03
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141 forum posts
56 photos

20190614_180450_resized.jpg20190614_180627_resized.jpg20190614_180710_resized.jpgI `ve had this airframe for about 4 years now, when i bought it i removed the OS .70 four stroke (won`t fly glow due to the mess) and have had a couple of half hearted bites at electric conversion. Well it is now close to flight, i have fitted a Turnigy 5055 430kv motor on 6s 3500mah turning a 14x8 wood prop. It needed a small amount of lead on the tail and final weight is 9Lbs 3oz, the watt meter shows 40amp max giving 920 watts. I think this should be a good setup, anyone like to chime in with thought on the set up, be interested in your opinions. Wingspan is 72" and it has a decent set of flaps on it (if you`ll excuse the expression!) .............Martin

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trevor wood 214/06/2019 21:03:21
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37 forum posts
38 photos

You seem to have all the bases covered; a good motor installation and easily accessible battery will make it easy to prepare for flight when you take it to the field. Also, that motor should be reasonably unstressed at the quoted max power level. It should give the Gull very acceptable performance. I'm sure that Cindy will be very happy!

Geoff Sleath14/06/2019 21:12:16
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3254 forum posts
247 photos

My similarly sized Mew Gull weighs about 4kg/10lb IIRC and I test flew it on 6S @ 45 amps flat out on a 14x7 APC/E prop with an EMax GT 4030/06 420 rpm/v motor and it flew very well. I don't think you'll have a problem with your set up.

That's a beautiful model btw.

Geoff

William Macleod14/06/2019 23:44:44
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117 forum posts
61 photos

Looking great Martin. Remember to video the flight. Bill

Percy Verance15/06/2019 06:19:03
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8110 forum posts
155 photos

I'm watching this with particular interest as a flying colleague built one of these about 25 years back. This design was one Mr Bryant sold the rights to Radio Modeller magazine back in the 60's, and so it never appeared in his own plans range. On the whole a nice model, but the example I mentioned above had some rather quirky handling traits in turns. I flew it only briefly, but it was odd. I feel sure it would have been built accurately enough - the builder was a former Shuttleworth Trophy winner - but the characteristic was there.

As commented on above, the powertrain seems more than up to the job. I'm looking forward to hearing how it goes.

 

Edited By Percy Verance on 15/06/2019 06:20:27

martin collins 115/06/2019 09:50:44
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141 forum posts
56 photos

I saw one of these fly at Old Warden a couple of years and asked the guy how it handled as i had one, his response was like a big trainer, certainly seemed to fly nicely from where i was standing. I have some mixed rudder added on a switch to see what difference that makes once in the air.............

kc15/06/2019 12:44:49
5901 forum posts
168 photos

Just to clarify things this plan is now available from Sarik just as other plans from Dennis Bryant's range are ( his other plans WERE sold direct but now have been incorporated into Sarik's range as they were Traplet at one time ) It is here

Percy Verance15/06/2019 15:02:32
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8110 forum posts
155 photos

Yep, I was aware of the change kc. I bought a slack handful of Bryant plans 25 odd years back when I met the man himself at the OW Scale Weekends I used to attend..... I can't make it there anywhere near as often now. Driving nigh on 240 miles with arthritic knees is no fun. About 20 miles is my driving range/limit these days. After that, too much pain sets in.......

Edited By Percy Verance on 15/06/2019 15:17:20

ASH.15/06/2019 23:25:02
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285 forum posts

Beautiful model Martin, shame it's not going to make the right sound. Glow doesn't have to be messy!

William Macleod25/06/2019 15:58:19
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117 forum posts
61 photos

Has it flown yet Martin? My Vickers Varsity flew two weeks ago and the big DH Foxmoth flew over the weekend. The small DH Hornet Moth had not flown yet as I could not get the four stroke to start.

Bill

martin collins 125/06/2019 20:56:05
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141 forum posts
56 photos

Not yet, am finishing the Curtiss first which needed a larger motor to throw a larger prop at less amps, will be shortly though.........

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