1974 Trans-AMA motocross series

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De Coster competing in the 1974 Trans-AMA motocross series

The 1974 Trans-AMA motocross series was the fifth annual international series established by the American Motorcyclist Association as a pilot event to help establish motocross in the United States. The motocross series was an invitational based on a 500cc engine displacement formula, run on American tracks featuring the top riders from the F.I.M. world championship against the top American riders.

Suzuki factory rider Roger De Coster claimed the championship with four overall victories. ^[1] His Suzuki teammate, Dutchman Gerrit Wolsink took second place along with one overall victory. Maico factory rider Adolf Weil claimed third place, while the top American rider was Bultaco's Jim Pomeroy in fourth place.

1974 Trans-AMA rounds

Round	Date	Location	Race 1 Winner	Race 2 Winner	Overall Winner	Top American
1	6 October	New Berlin, New York	Roger De Coster	Adolf Weil	Roger De Coster	Jim Pomeroy
2	13 October	Linnville, Ohio	Heikki Mikkola	Adolf Weil	Heikki Mikkola	Jim Pomeroy
3	20 October	Gainesville, Georgia	Roger De Coster	Roger De Coster	Roger De Coster	Jim Pomeroy
4	27 October	Orlando, Florida	Gerrit Wolsink	Pierre Karsmakers	Gerrit Wolsink	Brad Lackey
5	10 November	Lake Whitney, Texas	Åke Jonsson	Harry Everts	Roger De Coster	Steve Stackable
6	17 November	Puyallup, Washington	Harry Everts	Roger De Coster	Harry Everts	Rich Thorwaldson
7	24 November	Livermore, California	Bengt Åberg	Roger De Coster	Roger De Coster	Mike Runyard
8	1 December	Irvine, California	Pierre Karsmakers	Roger De Coster	Pierre Karsmakers	Pierre Karsmakers*
*Karsmakers, a Dutch citizen racing under an American racing license is awarded Top American status after being the Overall Winner of Round 8. Sources: [2] [3] [4]

1974 Trans-AMA final standings

(Results in italics indicate overall winner)

Pos	Rider	Machine	1		2		3		4		5		6		7		8		Points
1	Roger De Coster	Suzuki	1	2			1	1			2	2	5	1	6	1	3	1	900
2	Gerrit Wolsink	Suzuki	3	3		2			1	3					11	7	7	4	530
3	Adolf Weil	Maico		1		1	2	2	16	5	8	10			16	2	4	15	415
4	Jim Pomeroy	Bultaco	2	8	3		4	3	3	22	5	20					2	3	399
5	Harry Everts	Puch					8	10	6	12	7	1	1	2					344
6	Willy Bauer	Maico					3	5	4	19	45	4	6	36	4	8	6	6	333
7	Yukio Sugio	Yamaha					12	19	7	6	11	8	4	6	15	14	21	9	288
8	Brad Lackey	Husqvarna				4	10	6	5	9	10	12	7	37	17	6			285
9	Arne Kring	Husqvarna							9	4	4	9	3	19	7	12			270
10	Pierre Karsmakers	Yamaha	4						32	1	6	13					1	2	233
11	Rich Thorwaldson	Suzuki			2						15	6	8	5	8	13	10	12	-
12	Mike Runyard	Suzuki					9	12	15	10	21	19	9	10	14	4	18	8	-
13	Bengt Åberg	Husqvarna					5	7	42	8			26	4	1	41			-
14	Åke Jonsson	Yamaha							42	2	1	45							-
15	Steve Stackable	Maico							20	14	9	3	23	3			8	27	-
16	Håkan Andersson	Yamaha		4					2	16	3	18							-
17	Hans Maisch	Maico					11	4							20	3	5	17	-
18	Jimmy Weinert	Kawasaki					6	13							2	42	9	22	-
19	Heikki Mikkola	Husqvarna			1	3													-
20	Tony DiStefano	Suzuki					7	9	12	13							20	18	-
21	Rex Staten	Honda					15	15					20	16	3	41	13	26	-
22	Rich Eierstedt	Honda							10	7					5	17			-
23	Vic Eastwood	CCM					20	17	14	18			10	7					-
24	Sonny DeFeo	Maico					17	22	17	20	19	16	11	13	25	16			-
25	Vic Allan	Bultaco													12	9	11	14	-
26	Gary Jones	Can-Am							23	11					24	11	15	10	-
27	Raymond Boven	Montesa													9	10	16	13	-
28	Mike Hartwig	Husqvarna											2	14					-
29	Gary Chaplin	Maico											12	11	18	15			-
30	Koji Masuda	Suzuki									13	21					14	11	-
31	Tim Hart	Yamaha					16	18			20	7							-
32	Henning Hansen	Yamaha											16	9					-
33	Bryar Holcomb	Maico					19	16			18	15							-
34	Ivan Miller	Penton					13	14											-
35	Jimmy Ellis	Can-Am															33	7	-
36	Mark Blackwell	Maico					22	20					19	12					-
37	Roger Harvey	Cheney-BSA									23	23	17	17					-
38	Bill McLean	Yamaha											21	15					-
39	Gordon Bowden	Yamaha					18	23											-
40	Tom Kratzer	Yamaha											24	18					-
41	Wayne Boyer	Cheney-BSA													22	22			-
42	Trey Jorski	Kawasaki									22	24							-
Sources only document the points awarded to the first ten competitors. Sources: [2] [3] [4]

See also

• 1974 FIM Motocross World Championship
• 1974 AMA Motocross National Championship season

References

1. Belair, Fernando (March 1, 1975). "1974 Trans-AMA Series". Cycle World. Retrieved March 9, 2025.
2. Trans-AMA Motocross Records, American Motorcyclist, January 1975, Vol. 29, No. 1, ISSN   0277-9358
3. De Coster Shines in Stockerland, American Motorcyclist, January 1975, Vol. 29, No. 1, ISSN   0277-9358
4. Roger Rakes the Trans-AMA, American Motorcyclist, February 1975, Vol. 29, No. 2, ISSN   0277-9358