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Damian Couzoff's blog
Posted by Damian Couzoff | Jun 13, 2014 @ 06:12 AM | 1,139 Views
The alpina arrived today.Wings are light and strong,the quality is excellent.The fuselage is also excellent quality.The carbon joiner is a good to.I will be installing a scorpion 3026/710kv motor l purchased especially for this model,running 5s/2250mah/ 65-130c lipo.Power will be 150 watts/pound using a 11x7 folder,around 930 watts total power on tap.Due to time constraints,i wont be compiling a build log,but will report back on this page,when l can.
Posted by Damian Couzoff | May 17, 2014 @ 12:55 AM | 9,094 Views
Nearly completed this model.I will be running it on 4s/2200 mah with a 13x8 inch folder,identical to my multiplex fiesta sf electric glider.
I will post some pics and report on its flight after its maiden flight.
The sirius is like a smaller version of the reichard nimbus that l own,but has a flat bottom airfoil instead,not an RG 15 mod,like the nimbus.

UPDATED-22/5/14
I finished the sirius today.
Flying weight is under my estimated flying weight,so l am happy about that
Flying weight is only 2178 grams
Wing loading is 34 g/dm sq or 11.3 oz/sq foot.

I will maiden it this weekend,and take some photos of it.
I could only take some pics at the field today..
It was way to windy to fly-20 mph gusty winds,so l aborted the maiden.

UPDATED-31/5/14-SUCCESSFUL MAIDEN

I maidened the sirius today at the club field,in 5mph breeze.
This glider is a thermal soarer for sure,and shows no bad habits.
I would recommend this glider,its easy to fly,lightweight and best of all, it thermals.
The first flight was 45 minutes with no thermal activity,the second flight was 45 minutes also with no thermal activity.
When there is thermal activity,one hour plus flights will be possible for sure.
Very happy with it,its the first day of winter tommorow,so l will be looking forward to the warmer months,spring, summer and autumn for more thermal flying...
Posted by Damian Couzoff | Mar 30, 2014 @ 02:45 AM | 2,210 Views
I maidened the Multiplex fiesta sf glider today,it flies great,like its brother the Multiplex LS-3.After 40 hours of work to complete it from kit form(ARC),it has been well worth the effort.I have changed the prop to a 12x6.5,up from the 11x6 which l used for its maiden.This will give me 135 watts/pound,on 4S lipo,alot more thrust,better climb rate.Lipo,esc and motor were barely warm (cold),so stepping up to the 12x6.5 folder wil stilll be safe for the drive components.
Posted by Damian Couzoff | Feb 10, 2014 @ 04:58 AM | 2,329 Views
Awaiting delivery.It pays to do researching before purchasing high end scale rc gliders..I spent hours checking build logs on the german forums about these gliders,and then i thinked it through for months...The tangent ash 26 was a good buy,good build log/flight report,as was the reichard model dg 300,and now the topmodel discus 2a.All three models were purchased from europe,with the cheapest airfreight being used for all.It would not of been possible to purchase these models if a different air-carrier was used....
UPDATED-25TH FEB 2014.
The discus 2a arrived today.It looks every bit like the pictures do.Wings and fuse are strong,glass and carbon under the obechi veneer.and there is no damage from transport.Very happy with it,and cant wait to start fitting out the servos,etc.This model is the deluxe,without the retract gear,which was what l wanted anyway.It saved me alot of money,and l have a retract to install in it anyway.There is the door markings on the bottom o0f the fueslage,to facilitate an easy installation.The tow release is already installed.Anyway,very happy with it.
Posted by Damian Couzoff | Nov 26, 2013 @ 03:29 AM | 2,815 Views
Arriving soon.Finally arrived late last week.The wings are the strongest set of wings l have seen,even stronger than reichard model wings.I have began work on the model,and due to more time constraints will try to complete it over the next 3 months.UPDATED-4TH JAN 2014.This build has progressed to the final stages of completion,because of working long hours into the evenings.It hasnt been an easy build,each job has been challenging,so far all okay.
POSITIVES-Good strong and scale fibreglass cockpit and good fitting canopy
Beautifully finished wings,tough as nails,carbon master edition,obecchi veneer.
Hardened steel 12mm diameter wing joiner.
Decals and other hardware supplied is of excellent quality.
NEGATIVES-Tailplane bolt holes are drilled in the incorrect location.I will have to fill them,and redrill the correct location of the holes.
Floating joiner.I have fibreglassed the steel tube in the fuse and replaced the incidence pins with 4mm rather than 3mm that were supplied.Happy with the result,and no longer is it a floating joiner.
Multiplex wing locks were misaligned from the factory,so l had to drill them out,and have 5mm wing nuts/bolts to hold the wings on instead.Both the joiner mod and the wing nuts/incidence pins took a considerable amount of hard work and time to complete,
Only 6mm down for aileron deflection from the factory,the instructions recommend 12mm,so someone stuffed up there to.
OVERALL OPINION-The positives do outweigh the negatives,the negatives did...Continue Reading
Posted by Damian Couzoff | Aug 21, 2013 @ 05:28 AM | 4,189 Views
Graupner aerotow releases as pictured-8mm inner diameter.I have installed the graupner 8mm inner diameter releases in my-
Reichard DG300-Installation-COMPLETED

Phoenix K8B-Installallation-COMPLETED
GRAUPNER AEROTOW RELEASE- with titanium 3mm prolink and dubro 4-40 heavy duty balllink installed/HS 5645 MG.

Fly fly hobby DG808S-Installation COMPLETED-Homemade release modelled on the multiplex release.I will be using the wings, with the 370mm graupner spoilers,that l specially installed.It will be a 6 channel sailplane-Ailerons/flaps/spoilers/rudder/elevator/tow release....

S2G ASW 27.Homemade tow release installed,modelled on the multiplex tow release.Installation-COMPLETED-31st/October 2013.

Southern sailplanes-Kestrel 17-Homemade tow release (Multiplex design) and fixed wheel in fueslage.Installation-COMPLETED ON 27/11/13

Reichard model GROB G103C/Electric-Graupner cable aerotow release-COMPLETED ON 23/11/13....

Tangent ASH 26-Installation completed on 6/1/14
Phoenix models-ASK 21-installation completed
Posted by Damian Couzoff | Aug 06, 2013 @ 07:31 AM | 3,870 Views
Dg 300
Posted by Damian Couzoff | Jun 25, 2013 @ 07:30 AM | 3,681 Views
flyfly hobby-asw 28 (2.5 metre)-Slope only
flyfly hobby-condor (3.0 metre)-Slope only
flyfly hobby-dg808s (4.0 metre) Slope/Aerotow

reichard model-grob g103c acro ELECTRIC (3.6 metre) Slope/Aerotow
reichard model-nimbus ELECTRIC (3.6 metre) Slope/flat field thermal
reichard model-dg300 elan acro (4.0 metre) Slope/Aerotow
reichard model-sirius (3.0 metre) ELECTRIC,Slope/flat field thermal


multiplex-dg300 (3.75 metre)-Slope only
multiplex-ls-3 (3.2 metre)-Slope only
multiplex-fiesta sf (3.2 metre)-ELECTRIC-Slope/flat field thermal

seagull model-ka8b (3.0 metre)-Slope only

phoenix model-k8b (3.5 metre)Slope/Aerotow
phoenix model-ask 21 (3.2 metre)Slope/Aerotow

flying dream-cs discus (2.6 metre)-Slope only

southern sailplanes-kestrel 17 (4.25 metre)Slope/Aerotow

amd-discus (4 metre)-Slope only

dynaflite-bird of time (3.0 metre)-Slope/flat field thermal using 100 foot bungee.

S2G-asw 27 (4.20 metre)Slope/Aerotow

Tangent-ash 26 (4.05 metre)Slope/Aerotow
Tangent-alpina 3001 champ electro (3.0 metre)Thermal/slope

Topmodel-Discus 2A deluxe version (3.75 metre) Slope/Aerotow

Rc tronics-Cirrus (3.160 metre) Slope/aerotow

Simprop-L33 Solo (3.2 metre)Slope/Aerotow
Posted by Damian Couzoff | Jun 07, 2013 @ 05:26 AM | 3,780 Views
This has not been a wise purchase,l DO NOT recommend this glider.
Posted by Damian Couzoff | Jun 04, 2013 @ 07:32 AM | 5,963 Views
I have decided to buy this glider after researching more and more about it before purchasing it.It will be used as a slope/thermal glider fitted with a 43 mm diameter brushless motor/700kv, and running 5s lipo/3200 mah,12x6.5 folder,100 amp esc continuous-150 amp burst,equivalent to 160 watts/pound power available,using ecalc.It will be better suited to slope flying,more so than thermal,due to a wing loading of 12.5 ounces sq/foot,with a flying weight of 3.0 kg.Wing area is -80 dm sq,Steel wing rod(s) are 10mm diameter and 8 mm diameter,foam core wings,carbon i beam spar,glass then balsa/oracover.Anyway,this glider will be easy to handlaunch for flat field thermal flying, and will handle wind as well.Airfoil is RG-15 MOD.
UPDATED-9TH JUNE 2014-
I took these pictures today at the field of the nimbus and the sirius,both from reichard models.It was the best afternoon l have had to fly the nimbus and sirius.the nimbus flew really well,and very happy with it,and the sirius as well
Posted by Damian Couzoff | Mar 22, 2013 @ 07:05 PM | 4,455 Views
Not purchasing....
Posted by Damian Couzoff | Oct 28, 2012 @ 12:52 AM | 5,102 Views
Heres a pic of one of my boats,that l converted from 26cc gas to electric.UPDATED POSTING-27/12/2012-This boat has been changed several times to increase its performance,temperature issues were the problem,motor/esc and stuffing tube alll were to hot after running.I have installed a TP power 5850-820kv motor running on 11s,240 amp HV Swordfish ESC & added cap bank,watercooled the stuffing tube,and use a 48mm/3 blade prop.Top speed is edging close to 55 mph,which is good enough for sport running,as l dont race any of my boats.Recent testing results-motor shaft stuffing tube is cold after running,the watercooling has worked.This boat is now a reliable setup,and is fast,motor and esc temps are okay,as are lipo temps after running.Happy with the result,after many hours of work....
Posted by Damian Couzoff | May 28, 2012 @ 07:27 AM | 5,189 Views
I am going to install a 570 KV tiger brushless motor,running off 5s or 6s,either can be used by moving lipo,in cockpit box to correct centre of gravity position.85 amp(100 amp peak) v2 bec esc,5 amp/6v bec. l have decided to fit a motor,and try that,and still fly it off the slope as well.It should climb at 60 degrees/100 watts per pound,at approx 5 metres/second.Constant current is 60 amps,max current 90 amp/15 seconds.Max power 1800 watts/15 seconds,max thrust-4.8 kg.The glider weighs 5.450kg-12 lbs.Motor runtime-30 seconds/150 metres altitude,approx 5-6 climbouts using either 5s/3200 mah lipo or 6s/3200 mah lipo.UPDATED-9TH JULY-Both 5s and 6s can be used as there is only 50 grams difference in battery weight,6s delivers 112 watts/pound@1250 watts,using 13x6.5 folder,and if l want to use 5s,l have to change the prop to a 13x8 folder,and only get 90 watts a pound,l will stick with 6s instead.UPDATED-2/2/2013-Finally got to maiden the Reichard model GROB G103C today at the slope.I launched it without any power,as there was adequate wind/lift.It flys really well,and the centre of gravity is spot on.I tested the motor at height,and it works well.Overall l am very happy with this glider,and at 5.450kg it still soars well,and it has a wide speed range.Heres a few pics l took before the flight-
Posted by Damian Couzoff | Mar 24, 2012 @ 06:42 AM | 5,255 Views
My asw 27-4.2 metre and my ka8b-3 metre.
Posted by Damian Couzoff | Mar 13, 2012 @ 04:08 AM | 6,269 Views
I am awaiting delivery for a phoenix models K8B vintage scale glider-3.5 Metre wingspan.Since the Seagull models KA8B has proved to be a good glider,its bigger version(K8B),should just be as good.It does not have spoliers,so l will be installing 250 mm electric spoilers, awaiting delivery on those as well.Hopefully l will receive the phoenix models K8B by early to mid april 2012,and complete the radio and spoiler installation for slope soaring this winter.UPDATED-13TH APRIL 2012-Finally,its arrived,I am picking up the K8B tommorow morning,plus the electric spoilers/ext leads,etc,everything required to get the K8B completed for winter slope soaring.I will post a pic when l complete it..UPDATED-19TH APRIL 2012-I have completed the K8B,and will post a pic when l slope it for its maiden flight.
Posted by Damian Couzoff | Oct 23, 2011 @ 04:59 AM | 6,508 Views
This model has a tow release fitted, and working,and 250mm electric spoilers that l fitted, which replace the existing outdated letterbox spoilers.It has a low wing loading of only 15 oz/sq foot.Maiden flight went well on 6/11/2011,off the slope.Added extra lead to the nose,to balance at 60mm,wing loading is now 16.5 oz/sq foot,total flying weight 2.9 kg.Flys well,and is very stable.
Posted by Damian Couzoff | Oct 15, 2011 @ 12:57 AM | 6,116 Views
I acquired a MPX LS-3,and finished off the radio installation,and other minor tasks like lead cast for the nose,new set of steel blades for the wings.It has 250mm mpx spoilers,and will be primarily flown slope.
Posted by Damian Couzoff | Sep 17, 2011 @ 11:21 PM | 6,154 Views
I have been flying my 3.75-4.0 metre span gliders on the slope.I prefer to fly slope,and do not aerotow the 1/4 scale gliders.I am yet to maiden my ASW 27-4.20 metre,and Kestrel 17-4.25 metre at the slope,both these models will be maidened at mount hollowback,and will only be flown there, thereafter.They are expensive model$,and the landing area is large and flat,so it is the best slope for them.UPDATED MARCH 2013-Finally maidened both the ASW 27 and Kestrel 17,both are good flyers,the ASW 27 flies better though.
Posted by Damian Couzoff | Jul 04, 2011 @ 06:59 AM | 7,088 Views
I acquired a southern sailplanes Kestrel 17 kit,nearly 2 months ago,and are still building it.This glider is the biggest span model l have,the closest to it is my S2G-ASW 27,with a 4.20 metre span.The Kestrel 17 is one glider that has eluded me for years,l first saw one fly in 1980,and have always wanted to own one,luckily now l do.Once l complete it,l will post a pic.I completed the kestrel 17 on the 25th of sept/2011,here it is-after many many hours work.UPDATED-MARCH 2013.I finally got around to maidening the kestrel 17 off the slope.The wind was strong and l was nervous,as l had spent approx 60 hours to build this model.It launched well,and climbed upwards quickly.It took a while getting used to the feel of this model,at one stage,both outer wing panels bent downwards,out of a turn,and this is due to the washout built into the wings-it doesnt need any.This luckily only happened once,and it recovered,afterwards,after losing height as well.Anyway,the landing was due,and after applying full spoilers,the nose ptched downwards about 60 degrees,so l quickly retracted them,and applied alot of up elevator,to bring it in level.It was not particularly easy to land,and next time l will apply the spoilers for a very short time,to keep the speed up,with less pitching down.