Interesting reading William, thanks for sharing. If you ever get that jewell of a publication copied, count me in for a copy of it! I always find the chain of events since 1946 to present on our planes extremely interesting, this is part of that history.
--- In [email protected], William R. Bayne <ercog...@...> wrote: > > > Hi Donald, > > Your facts are straight in that they are the truth. > > The "whole truth", however, is more in line Harry's statement that the > local Delco-Remy qualified auto [electrical repair] shop is "qualified > to repair the generator and re-set the regulator". > > I say this because I have a copy of the Delco-Remy AIrcraft Electrical > Equipment Operator's Manual, DR-5057 dated 10-31-46. Each proud new > aircraft owner with a Delco electrical system got one of these with > their aircraft. > > On p. 8, under "Checks to Be Made if Cranking Motor Does Not Operate > Properly", the owner is advised to, among other things, remove the > cover band and check the brushes and commutator. Rather amazingly, it > advises that "If the commutator is black or dirty, it may be cleaned by > holding a strip of fine sandpaper (No. 00) against it with a piece of > wood while the cranking motor is operating. Keep ignition turned off > so engine will not start,." YA THINK? It then advises "If the > commutator is extremely dirty, worn, or has high micah, the cranking > motor should be removed and taken to an Authorized Electrical Service > Station of United Motors Service so that the commutator can be turned > down in a lathe and the mica undercut." > > On p. 17, the preceding is repeated for the generator. > > On p. 11, it states: The generator is used in conjunction with a > regulator...which exercises full control of the generator output. > Misunderstanding of the regulator action often leads to misadjustment > of the regulatorr and resulting serious damage to the electrical > equipment and possibly the plane itself. THE REGULATOR COVER MUST > NEVER BE REMOVED EXCEPT BY AN ELECTRICAL SERVICEMAN WHO UNDERSTANDS > REGULATOR ACTION AND SERVICE REQUIREMENTS." On p. 13, it states: > "Under no condition should an unqualified person without adequate > testing instruments and tools attempt to adjust the regulator." > > On the back cover is the UNITED SERVICE MOTORS logo, a horizontal oval > with what appears to be an early thirties convertible automobile (top > down) with the first word over the car, the second word in white > letters reversed out of the black vehicle, and the third word below. > The shops displaying these signs were, in the main, automotive shops in > 1946. Above this logo are these words: > > "Always use original equipment parts for repairs or replacement. > Parts and service on all Delco-Remy unita are available at > United Motors Service Stations everywhere...wherever you see > this sign. > > So if it was "legal" to have aircraft Delco components serviced by > automotive shops back in the forties, the only reason not to do so > today is NOT regulatory, but one of the changed legal liability > "climate". Such shops legitimately fear that the widow of a pilot that > crashes may some day file a suit against their shop simply because once > upon a time they worked on an aviation component of that aircraft and > her lawyer will cast the widest possible net looking for dollar$. > > I have had mine checked for electrical "correctness" with a growler. > They don't have to have a pulley to turn down a commutator and undercut > the mica. Owners who are persistent very quickly eliminate the shops > that are looking for ways not to do the work, and those seriously > interested in the actual practice of their trade. Find one of the > latter, and stick with them...money in the bank, and good insurance. > > When time and finances permit, I intend to publish a reprint of > DR-5057, and also offer the many later Delco Service Bulletins and > Parts Lists now out of print and no longer available. > > Regards, > > William R. Bayne > .____|-(o)-|____. > (Copyright 2010) > > -- > > > On Jul 14, 2010, at 12:02, Donald wrote: > > > I had to look that one up Harry. Para 3 of SB 44 only pertains to the > > regulator, and says you must take it to an authorized Delco Remo > > repair station. I don't think anyone actually repairs the regulators > > any longer, and your reference does not apply to generators. When I > > tried to have mine checked, they would not touch it until I told them > > it was from an airboat, and then they could not because they had no > > way to spin it up without a pulley on it. > > Getting a rebuilt 35amp generator costs $291 at skyport, a rebuilt > > Cessna 60 amp alternator costs $376 at Aircraft Spruce. > > I am not trying to sell anybody on the idea, just keeping the facts > > straight. > > > > > > --- In [email protected], "Harry L. Francis" > > <harrylfrancis@> wrote: > >> > >> Taylor, > >> > >> Whenwe had tube type radios, plus al the lights, etc. the original > >> Gen at 13 > >> amps was just too small. The 35 amp system is more than adaquet for > >> your > >> bird......in my opinion. I cannot justify the cost od the alternator. > >> Thenonly > >> benefit is the alternator will more quickly re-charge the batt....but > >> not > >> needed. > >> > >> The generator casn be repaired, if necezsry at the local Delco-Reme > >> qualified > >> Auto shop. I would be tempted to purchase one of the solid state > >> regulators if > >> yours needs replacement. > >> > >> The auto shop is qualified to repair the gen and re-set the > >> regulator, as > >> pointred out in the ERCo Memo 44, para 3 > >> > >> Harry Francis > >> N93530 >
