What year is my Simplex?

This simple question and answer chart will help determine the vintage of your Simplex Servi-Cycle, Automatic, or Truck. If you start with Question #1 and answer the questions correctly, you should arrive at your correct year and model. Bear in mind that production changes were often made mid-year. Much more detailed information is available on each year model. If you have further questions after following the chart, or want more details about your particular model, feel free to e-mail me.



QUESTION #1: Is the drive pulley that is connected to the rear wheel on the left or right side (as viewed when sitting on the bike or standing behind it)?

RIGHT

LEFT















You have a 1935 to 1940 Direct Drive model. Look at the engine serial number stamped on the left side of the engine case below the cylinder. The first four digits are the year. Example: 1936223 would be the 223rd engine produced in 1936. In 1938, the engine number begins with 38 (not 1938). For more information about your Direct Drive Servi-Cycle, click here.

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Does it have ONE gas cap or TWO?

ONE

TWO















Look at the engine serial number stamped on the left side of the engine case below the cylinder. What LETTER (or NUMBER in the one case) does it begin with?

G | H | 48 | J | K | L | M













You have a 1940 to 1944 Model G Servi-Cycle.

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You have a 1945 to 1947 Model H Servi-Cycle. If it has a kick starter that has the tube for the pivot shaft welded cross-ways to the frame, click here. If it has no kick starter, or has a kick starter, but the kick starter pivot shaft is attached to the frame using two U-bolts, click here".

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You have a an early 1948 Model 48 Servi-Cycle. For more information about this model, click here.

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You have a late 1948 Model J Servi-Cycle. For more information about your 1948 Model "J", click here.

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You have a 1949 Model "K" Servi-Cycle.

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You have a late 1949 to 1951 Model "L" Servi-Cycle.For more information about your "L", click here.

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You have a 1952 or 1953 Servi-Cycle.

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Does it have a CLUTCH PEDAL on the left foot?

YES

NO















It's a late 1953 to early 1955 model Simplex Servi-Cycle (one of the last Servi's before the Automatics. Your frame serial number should be in the 06000 to 08200 range and the engine number between M14000 and M16500B).

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Does it have FOOTPEGS or FLOORBOARDS?

FOOTPEGS

FLOORBOARDS




















You own a 1956 to 1958 Simplex Sportsman.

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Is the engine serial number between M14500B and M21035B?

NO, IT'S HIGHER

YES















You own a 1956 to 1960 Simplex Automatic Powercycle.

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You own a 1953 to 1955 Simplex Automatic.

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You have a 1947 Model "H" Servi-Cycle.
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You have a 1945 or 1946 Model "H" Servi-Cycle.
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Are parts and/or literature available?

Yes, many parts are still available, from several sources. See the Classifieds page for more information. Two of the larger parts dealers for Simplex Servi-Cycles and Automatics in the U.S. are:
Wayne Mahaffey
8601 County Road 214
Trinity, AL 35673
(256)353-7786 (Days)
(256)353-5552 (Nights)

and
Gary Wollard
4511 100th St. West
Bradenton, FL 34210
(941)795-1153

Also, I have photocopies of many manuals, catalogs, and articles available. For a detailed listing, click here.

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I have a Compact Sportsman. Do you have any information on these models?

Yes. You can click here for a few photos of Compact Sportsmans (later sold under the brand name Valiant). Soon, a section of this site will be devoted to the Compact Sportsman. Meanwhile, you can obtain more information about these models from Mark Casillas.

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What's my Servi-Cycle or Automatic worth?

Quite frankly, whatever somebody will pay you for it. Simplexes have not appreciated greatly in recent years, but a well preserved or well-restored one can be worth several thousand to the right person. I've seen rusted frames with no handlebars or engine for $125, and I've seen complete semi-restored Automatics for $4,500. One general rule is the older the model, and the more complete and correct it is, the more it's worth. In other words, a 1935 or '36 Direct Drive in excellent unrestored condition is much more rare than, say, a 1956 Automatic, and thus is worth much more. If it has a history with it, it's worth more. If it has a Briggs engine grafted into it, it's worth considerably less. For an overview of recent models I've seen for sale, click here. You also should review the Classifieds section to see what others are going for. I'll be happy to give you a ballpark appraisal of yours. Just e-mail me.

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Are correct replacement tires available?

Yes, a nice reproduction tire is available from Wayne Mahaffey. This is the tire that was used from about 1940 on, which is a 26 x 2 1/2" tire with the Servi-Cycle logo on it. Earlier models used balloon bicycle tires.

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Where can I find the serial numbers on my Simplex?

The engine number is located on the left side of the crankcase.See here for detailed illustration of engine serial number location. The frame serial number (if your bike has one) is located just behind the steering head and front forks on the underside of the steering head. You'll need to kneel or lay down and look directly up under the steering head behind the front forks, between the steering head and crash bars. Look closely with a flashlight. The numbers will be stamped into the frame and should consist of five digits beginning with a "0" or "1". For example, my '54 frame number is 08109, and engine number is M16364B. The frame numbering system first appeared around 1948-9.Click here for a photo of frame serial number location.

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