I think there is little information on the details of fans so thought it was worth going through the various details. Do note that some fans were never intended to be fitted as a second pair, and these will be in trouble if used as such; all fans were painted with a white 3/4" thick strip to make the edge clearly visible (safety reasons). Don't mix them up either.
The first spec had E1ADDN-8600B for normal temperatures and E1ADDN-8600A for high temperatures for the diesel, and E1ADDN-8600A for normal temperatures and E1ADKN-8600 for high temperatures on spark ignition models. At some point in March 1958 the spec changed, E1ADDN-8607A replaced E1ADDN-8600B, E1ADKN-8607 replaced E1ADDN-8600A and E1ADKN-8607 plus E1ADKN-8606 replaced E1ADKN-8600; these last two had a B suffix by 1959 and were thickened a bit to combat fractures in lorries from 500E-54249, 530E-12463 and 510E-28152. The Dexta made use of E1ADDN-8607A, with 957E-8606 added for high temperatures, the petrol Dexta uses a Standard 4 blade fan, 56541, completely different from Ford ones. Then the Power Major introduced E1ADDN-8607B for normal temperatures and added in E1ADDN-8606 for high temperatures. In 1960 the 18" fans became Thames Trader parts 508E-8607 and 508E-8606 from 1571826. This was due to fracture issues in Thames Traders, the new blades have strenghtening plates point welded on. Now for Ebro, except for the Ebro 160 and possibly the lorries and industrial units they stuck with E1ADDN-8600B, many would later errouneously be fitted with a second identical blade, that doesn't actually fit properly. Ebro's larger fans might have had their own part nos., but I don't know about this yet. The 160 used an equivalent of E1ADDN-8607B, and none was intended to be used as a second blade.
Now for a table of all blades, all those marked outer were not used unless operation above 90ºF ambient temperatures was expected:
Part No. ___________ diameter _______ use
E1ADDN-8600B ________ 15" ________ inner, Major Diesel to March 58, and also Thames 502E and 530E Traders
E1ADDN-8600A ________ 18" ________ inner, Major to March 58 (diesel hot, spark ignition normal), and also Thames 500E/502E and Traders
E1ADKN-8600 _________ 18" ________ 4 blade, Major spark ignition to March 58, and also Thames 500E and 508E/510E/528E Traders
954E-8600A ___________ 18"? _______ 4 blade, pusher, industrial
E1ADDN-8607A ________ 15" ________ inner, Major Diesel March 58-1481091, Dexta, and also Thames 502E and 530E Traders
957E-8606 ____________ 15" ________ outer, Dexta
E1ADKN-8607(B) _______ 18" ________ inner, petrol Major March 58-1571826, Thames Trader March 58 to 508E-52157 510E-53306 528E-19557,
_____________________________________________________________________________________ Thames 500E/502E March 58 to 500E-58156
E1ADKN-8606(B) _______ 18" ________ outer, petrol Major March 58-1571826, Thames Trader March 58 to 508E-52157 510E-53306 528E-19557,
_____________________________________________________________________________________ Thames 500E March 58 to 500E-58156
E1ADDN-8607B ________ 17" ________ inner, Major Diesel 1481091 on
E1ADDN-8606 _________ 17" ________ outer, Major Diesel 1481091 on
508E-8607 ____________ 18" ________ inner, Thames Trader after 508E-52157 510E-53306 528E-19557, Thames 500E-58156,
________________________________________________________________________________________ petrol Major after 1571826
508E-8606 ____________ 18" ________ outer, Thames Trader after 508E-52157 510E-53306 528E-19557, Thames 500E-58156,
________________________________________________________________________________________ petrol Major after 1571826
E1ADDN-8600B (Ebro) __ 15" ________ inner, Ebro except 160, not seen any part no. but it matches the pics I've seen on Ebay of E1ADDN-8600B
(S1ADDN-8600) ________ 17" ________ inner, Ebro 160, (lorries), not seen any part no.
And now for pics (please add any you can):
E1ADDN-8600B (Centre reinforced with point welded extra plate)
E1ADDN-8600A
E1ADKN-8600
954E-8600A
E1ADDN-8607A Davie, vertical blade, not found an EnFo yet
957E-8606 Davie, nearly horizontal blade, not found an EnFo yet
E1ADKN-8607
E1ADKN-8606
E1ADDN-8607B
E1ADDN-8606
508E-8607
508E-8606
E1ADDN-8600B (Ebro) (Centre reinforced with point welded extra plate) Super Billy and half Super Major, showing erroneous four blade unit
a later one erroneously used as an outer one
(S1ADDN-8600)
Note the post is unfinished as I only have access to our vehicles, therefore your help with pics of the other blades is highly appreciated. I have seen some on Ebay, causing some doubts on where the part no. and EnFo are stamped.
Sandy
