pd1 did show us the weight of the Duramite Bonner 2 channel servo, see post
http://www.rcuniverse.com/forum/fb.asp?m=8117596
after that the weight of the Orbit reeds receiver known by rfj, 3.5 a 4 oz, see the posts on that page.
So, total weight of the radio of Ed's ship as flown during the contests of 1961 and 1962 untill he modified it to proportional must have been about 650 grams .
Because his reeds systems also were relailess these could have been lighter than my tonefilter system, expanded to the needed 10 channel
A reason for me to make a comparision.
Estimation of an original complete Orbit Reeds-relailess system in the Taurus
5 cell 6VDC NiCad 120 grams
reeds receiver 110 gram
Duramite 87 gram, but 5 times so 435 gram
Totall weight 665 grams
Estimation of weight of my scratch built tone filter relais system
4 cell 4.8 VDC NiMHi 134 grams
Servo's (modified) 44, 5 times 220 gram
Tone filter receiver recalculated to 10 channel 400
Totall weight is 754 grams
My system will be about 90 grams heavier, that's too much!
Option will be, build a new 10 channel relailess receiver.
I can also can save some weight, but not that 90 gram, by using a light accupack, I don't need these 2700 mAh.
To give you an impression of the actiradius!
Current draw of a (
pré-brownout period) receiver is less than 3 mA, added the 50 mA when a servo rotates, simultaan max 2x = 100 mA.
So 2700 mAh is enough for a flight of more than 27 hours!!!!!
An airspeed of 100 km/h in straight direction, will result in a radius of more than 2700 km. That's enough to fly my (replica of the first successfull and) Oldest Taurus on Earth from Manderveen to Georgië or from Saint-Pierre en Mequilon to Georgia.
Looking at the dimensions in the fuselage, any relailess receiver, accupack and (modern!!) servos will fit in place without problems.
So, conclusion, it's possible to expand the radio and fly the Taurus witin the specifications Ed did during the contests in 1961 and 1962 before he modified the plane and used the proportional, see photograph 2, but for that there is some more work to do, so more to come.
Cees