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Archive for February, 2013
Posted by FWAL | Feb 23, 2013 @ 06:47 PM | 4,926 Views
The Spook was thrown out over Craig-Cefn-Parc to check the lift. It was cold and snow was floating in the light breeze. However, the lift was OK and was improving all the time. After a quarter of an hour session with the Spook,warming up my thumbs which had had a 2 month lay off the sticks I was starting to twitch. It was time. Time to see if my latest creation would actually fly. Time to see how long it would last.
The first and second launches proved very quick. After adding roughly 120 grams of lead in front of the battery pack and clicking in some down elevator she really started to soar. I thought she wouldn't be that aerobatic but I was extremely wrong. WOW, this glider can rock! It was about ten minutes before my first unscheduled landing when she went into a unrecoverable spin but this bird is strong. It wasn't long after when she went down again in the same spinning manner. I needed to tame this tracer. It was time to to dial some rates and expo in until I learn how to fly this mad machine. Watch out, this 58" Tracer can axle role and loop a hell of a lot better than the pilot.
Now I'm really looking forward to getting to know this plane as there is loads of potential for learning new tricks. OK exaggeration! Loads of potential for the just learning to keep her in the air is probably closer the truth.
Posted by FWAL | Feb 21, 2013 @ 03:12 AM | 4,140 Views
BOR went under the knife recently to lengthen the LWL and thus improve her speed and looks. Following her initial maiden it was very evident that despite her bottom sitting in the perfect position on the water she was sticking her nose up in the air a bit.
So with a bit of balsa and plastic surgery her nose is now pointing in the right direction, massively improving her looks on the water.
Posted by FWAL | Feb 10, 2013 @ 09:43 AM | 4,186 Views
Bor was baptised with water from above as well as below and very little wind. The heavy mist and rain put an end to any proper analises of her performance. What it did show is that the 135 grams (4.76oz) of corrector weight will be positioned just in front of the center of buoyancy in order to drop the bow slightly. It looks a little high but as soon as there was any amount of pressure in the rig the bow did lower.
Posted by FWAL | Feb 10, 2013 @ 06:03 AM | 4,390 Views
Bor's build is complete. Yeeeeaaaaaaaaa!!
My Brain can now disengage from it's boat design and building duties (it's been a 24/7 exercise for the past 2 months).
Just to re-cap her max beam is 180mm (7 1/8"). As she is a narrow design, I am experimenting with a wider, flatter stern of 110mm (4 5/8") The thought behind this overall shape is to reduce wetted hull area whilst at the same time reduce pitching. I believe that pitching is a bigger killer of boat speed than the slight increase in drag caused by the wider transom.
To improve on longitudinal trim I have lengthened and flattened the arc of the rocker, thus diminishing the center of buoyancy trim sensitivity (there are no crews on IOM's to move about). The bow and fore most hull section has taken on a diamond shape to improve both dynamic lift and wave penetration, coupled with a full length chine I'm confident of her all round performance. Added to this the free board runs seamlessly into the fore and aft decks, producing good aerodynamic qualities by reducing rotor.
The ready to race weight prior to correctors is: 3,865grams (136oz) so if my scales are accurate, corrector weight will be in the region of 135grams (4.76oz). I am pleased with this as the 6VmAh battery pack I'm currently using weighs almost 150grams (5.3oz)
Posted by FWAL | Feb 01, 2013 @ 11:12 AM | 4,028 Views
I couldn't believe my eyes when after all the work to prep, paint and then strip the paint off, prep and apply West system pigmented resin for THIS TO HAPPEN!!
As you can probably imagine I was horrified, gutted angry etc etc.
I have subsequently chilled out and have tried to find out the cause but despite the surfing I'm still not 100% sure what went wrong?
My gut feeling is that the surface I was applying the resin to was too smooth, as it was prepared with wet 240 grade wet or dry, anybody have any other suggestions?