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From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Performance comparison of Klaxon and Lucas dual windscreen wipers.

Identifier  ExFiles\Box 167\5\  img057
Date  14th March 1933
  
DA{Bernard Day - Chassis Design}/EV.{Ivan Evernden - coachwork} From Hs{Lord Ernest Hives - Chair}/Wst.
c. to Hn.{F. C. Honeyman - Retail orders}
c. to E.{Mr Elliott - Chief Engineer}

x6115

Hs{Lord Ernest Hives - Chair}/Wst.3/MA.14.3.33.

WINDSCREEN WIPERS.

As referred to in our Hs{Lord Ernest Hives - Chair}/Wst.1/MA.1.3.33., we have now obtained comparative figures of performance for the Klaxon and Lucas dual wipers, as follows:-

(1) Running current under maximum load conditions :-
Lucas 1.7 to 2.0 amperes.
Klaxon 3.0 to 3.5 amperes.

(2) Stalled current :-
Lucas 3.8 amperes.
Klaxon 8.0 amperes.

(3) Temperature rise under maximum load conditions:-
Lucas 50°C.
Klaxon 95°C.

The Klaxon is series wound and thus has a big variation of speed and current with torque and a high stalling current whereas the Lucas is a shunt wound machine.

Hs{Lord Ernest Hives - Chair}/Wst.
  
  


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