REMINDER - PITCH BLOCKS, FOR A BETTER JOB OF SERVICE
Here's an opportunity to create a bit of extra good will among your Johnson owners (customers) - helping them to get the most out of their motor-boat units while at the same time maintaining owner contact - your best new motor prospect.
Most outboarders aren't aware of what minor propeller deficiencies can do to motor performance and as a result, "put up" with sluggish, noisy operation as a matter of course - not knowing that restoration of pitch accuracy will many times transform something to be tolerated to a pleasing experience in outboarding.
Seriously damaged propeller blades are easily recognized, and corrective steps taken immediately - like installing a new wheel. Its the blade that's but slightly off pitch but doesn't "look" it that causes most of the difficulty and just the propeller we'd like to have for "re-pitching" - before too many things shake loose and the operator gets the jitters. A vibrating massage may be all right in some places and under certain circumstances, but surely not in a boat.
A letter (on the order of enclosed sample) circularized among your owners during mid-season to inform them of the effects of a badly pitched propeller, ought to bring many of them in for a propeller check. And, while somebody's "pitching" the wheel, somebody can be showing off the new Johnson line, a boat, trailer, boating gear, etc. But regardless, if his propeller did need attention, he'll find his outfit a much better performing job and that's good for your business too - Try it.
Be prepared now for a complete program of service with a full set of pitch blocks. Order at once from Outboard Marine Depot, Galesburg, Illinois - on enclosed order form with your check attached.
Use enclosed order form - MAIL DIRECT WITH YOUR PREPAYMENT TO:
OUTBOARD MARINE CORPORATION PARTS DEPOT P.O. Box 470 Galesburg, Illinois
JOHNSON MOTORS
Jack PenlandService Promotion Manager
Sample customer letter
Dear Mr. (Motor Owner):
The propeller of your Johnson motor is an extremely important part of the assembly - the engine drives the propeller and the propeller "pushes" the boat. Just how well it pushes the boat and to a considerable extent how well the motor performs is dependent perhaps more than you may realize on pitch accuracy and over-all conditions of the propeller blades.
Specifications of the propeller as you know are given in terms of "diameter" and "pitch". Diameter is simply diameter of the circle described by the tips of the blades. Pitch (determined by the "twist" given the propeller blades) is the distance the propeller would theoretically move the boat during one revolution - some slippage, however, occurs to have its effect on actual mathematical advance.
Regardless of pitch specifications, to achieve utmost efficiency in motor and boat performance among other things, the pitch of all three (or 2) blades must be equal. One or two of the propeller blades being "knocked" even slightly off pitch as a result of beaching or striking under water obstructions, not only reduces efficiency of the propeller (as revealed by a reduction in boat speed) but the motor is caused to perform sluggishly - more noise, more vibration with a falling off in R.P.M.'s for no apparent reason that you may for the moment recall.
The sudden appearance of excessive or more than ordinary vibration may generally be attributed to "damaged" propeller blades. Whether caused by beaching, striking submerged or floating debris (logs, boards, bottles, etc.), it ought to be "tended to" at the earliest possible moment. Excessive vibration does your motor no good - it's irritating and affects the performance qualities originally built into it.
In event of meeting with an experience of this sort, suppose you drop by some day with the motor or propeller to let us run a check for pitch accuracy on a Johnson factory designed and built pitch block provided especially for the purpose. It's part of our Service to you. Or, better still and to be sure, come in regardless for a propeller check. A slightly "off pitch" propeller blade can rarely be distinguished on casual observation, but its effect on performance is sometimes quite surprising. After all, it'll only take a few minutes of your time.
We (I)'ll be looking forward to seeing you.
Very truly yours,
(JOHNSON MOTORS)
Factory propeller straightening fixture order form
ORDER TO - OUTBOARD MARINE CORPORATION PARTS DEPOT
P.O. Box 470
GALESBURG, ILLINOIS
Please ship the following Propeller Straightening Fixtures.
| Part No. | Description | Net Each |
|---|---|---|
| 376103 | Model TN Series | $7.00 |
| 376104 | Model QD-10 thru 17 | $6.80 |
| 376106 | Model RD-10 thru 18 | $12.25 |
| 376108 | Model CD Series | $6.60 |
| 376110 | Model AD Series | $7.10 |
| 376112 | Model FD and FDE-10 | $6.70 |
| 376933 | Model QD-18 | $7.00 |
| 376934 | Model FDE-11 and 12, FD-11, 12, 13, 14 | $7.00 |
| 376951 | Model RD, RDE and RJE-19; RD, RDE-19C; RDS-20, 21; RD-21 | $12.00 |
| 376952 | Michigan Wheel AMC 383 | $12.00 |
| 377537 | Model QD-19, 20, 21 | $7.00 |
| 377538 | Model V4, V4S-10 | $12.00 |
| 377539 | Model RD, RDE, RDS, optional propeller No. 377410, 10 3/8 x 11 1/2 | $12.00 |
| 377791 | Model V4, V4S-11 | $12.00 |
| 378122 | Model V4S-12, 10 1/4 x 10 | $12.00 |
| 378134 | Model V4S-12, 10 x 12 | $12.00 |
| 378135 | Model V4S-12, 10 x 11 | $12.00 |
| 378136 | Model RD, RDS, optional 10 3/8 x 14 | $12.00 |
ALL PRICES QUOTED ARE F.O.B. GALESBURG, ILLINOIS AND SUBJECT TO CHANGE WITHOUT NOTICE.
Indicate quantity desired, sign below and MAIL WITH YOUR CHECK OR MONEY ORDER DIRECTLY TO OUTBOARD MARINE CORPORATION PARTS DEPOT, GALESBURG, ILLINOIS.
NOTE: NO C.O.D. ORDERS ACCEPTABLE! Your check or money order must accompany this order. Make it PAYABLE TO: OUTBOARD MARINE CORPORATION PARTS DEPOT.
The factory order form was scanned separately in this batch. It is included here because this bulletin specifically references an enclosed pitch block order form.
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