|Overall view of the model from the front starboard quarter.|
|Overall view of the model from the starboard side.|
|Overall view of the model from the front.|
|Lars and his Mosquito.|
|The Mosquito in the air.|
|The Mosquito in the air, undercarriage extended.|
|The Mosquito flying, left bank.|
|The Mosquito flying, left bank.|
|The Mosquito flying, hard left bank.|
|The Mosquito flying straight and level.|
|The Mosquito in the air, undercarriage extended in preparation for landing.|
Lars also had this to say about the model:
In 1997 I bought english plans from Brian Taylor of a De Havilland Mosquito PR XVI in 1/8 Scale with 81" span and an overall length of 61,5". It took 4 years until I could start building. After nearly 15 months of hard work in our small kitchen, this model has made it's successful maiden flight in May 2002, (thanks to my lovely wife for here understanding).
The plane has functional flaps, is built in all balsa and ply, has a liftoff weight of 15 lb and is "electric powered!". The wingarea of 931,86 inch2 leads in a wing loading of ~ 37 oz/sq. ft. The cowlings, spinners and undercarriage doors are moulded by myself. The 2 cowlings weights only 9 oz and the 14.1 oz lightweighted aluminium retractable undercarriage (including the wheels) was made by a friend who is toolmaker. The tail wheel is also steerable and retractable. I use a Futaba 8UAP transmitter and hitec HS85MG servos, the receiver is a Multiplex digital IPD 7channel system.
The two powerplants are 2,33:1 geared (http://www.lauer-mechanik.de/Modellbau/Getriebe/getriebe.html), brushed, german Plettenbergs 290/20/8 motors, (http://www.plettenberg-motoren.com, also available in english) combined with Schulze speed controller (http://www.schulze-elektronik.com/index.htm, also available in english).
The engines generate so much thrust, it's nearly unbelievable. They swing 13x8 APC props at 7300 rpm, and I measured ~7.4 lb of static thrust using a spring balance with a 40A load, which each engine takes from 12 inline soldered, pushed and matched 2400RC Sanyo Cells. I have a total of 24 cells in the model (the drive calculation was done with software support of a german software named "Elektroantrieb", designed by Wilhelm Geck. It's similar to "motocalc" but with more parts of german manufactors).
Before the first take off I was very nervous, but after flight I knew there wasn't any reason for it. I hadn't any problems with liftoff weight or the power, no tendency for tipstalling and the model has fantastic performance. I had some very exciting, fast and very impressive low flyby's, and the toothed belt Plettenberg engines with the APC props also have a great sound. Flight time with full throttle is 3 1/2 min and with 2/3 power I can increase it to more than 4 min. Also the low-speed performance is not so nervous as I thought.
But no Sunshine without a small cloud. On second flight, shortly before I retracted the undercarriage the model lost its right wheel, (my mistake, I forgot to secure the screws). Landing after 4min. flight in the high gras on the cowlings was easy, and produced no damage. Now a new wheel is already mounted.
I hope you enjoy the picturess, they were taken with a (non-digital) Minolta camera and scanned, some of them with high enlargement. I completed nearly the whole documentation of the total phase of building and the first flight on my homepage, but unfortunately I haven't had time to produce an English translation. However, I hope all the pages are easy enough to navigate for viewing pictures and if anyone is interested in reading, they could try to translate some pages with an online translation service (e.g. http://babelfish.altavista.com - Andy).
please feel free to contact me if you interested in more details,
|Have you built any Mosquito models? Would you be willing
to write a review for inclusion on this page? If so, please contact me.
Other comments or additions? Please contact me.