Page under construction always…
This year the 48th ISDT was held at Dalton in the Berkshire Hills, Massachusetts, USA 17th – 24th September this was the first time the event had travelled outside of Europe as well as visiting the USA
Thanks to eBay we have picked up a few pages of the Programme and they are added below
Thanks to the reader who recently gifted a full copy of this programme to share via this page, I am very grateful and will complete the scanning shortly.
We only have this one Mazzilli picture, believed to be of a probably Italian produced Sachs powered Ceriani teleforked & rather nicely constructed machine of the 1970 to 1976 era, CAN ANYONE OUT THERE PLEASE HELP US WITH INFORMATION, riders types events & images.
Thanks to Italian STT reader Massimo who provides this link to a site dedicated to creating a register of the bikes.
On the Map!
A British Barbour with Epaulettes.. .were these Police issue jackets?
Here is one of Brian Catt’s delights, a pic sent by Sven Olsen of Sweden desparately searching for his Cheney ISDT machine Headlamp parts the picture comes from an article by Tony Down on his website.
Thanks to Arthur Williams one of our greatest authorities on the ISDT for pointing out that #262 is Dai Jeremiah who went on to be a firm fixture in the British ISDT Trophy team
#292 Dave Hobbs pinned in a group of Swedish riders no doubt on lightweight powerful Husqvarnas, Monarchs or similar whilst the institutional British teams of the Forces and Police were expected to lug around traditional British Heavy Metal in order to fly the flag.
With thanks again to our Discoverer in chief, Dave Martin whose bits galore for inclusion have made the site worth browsing for many many folk in many locations.
1973 ISDT Identity of number 32 has been kindly supplied to us by Lamberto Poggi, Grazia Lamberto.
1973 Trophy Winning Czechoslovakian team of Josef Fojtik, Zdenek Caspiva, Josef Cisaf, Kvetoslav Masita, Frantisek Mrazek, Petr Cemus.
Silver Vase though! Won by USA team of Dick Burleson, Malcolm Smith, Ed Schmidt, Ron Bohn who excelled themselves.
The French Team in their uniform at the opening ceremony, Left to Right : Christian Rayer, Bernard Chauvière (Manager), Joël Queirel, Nicolas Samofal, Jean-Marie Huguet, Jean-Louis Figureau, Charles Coutard
Arthur Williams provided some bits so we start a 1973 page Britain’s Best performance for 7 yrs to 2nd in the Trophy Event. 1100 miles to go, 71 Checks, 11 Special Tests. 48th ISDT 17 to 24 inc September at Berkshire Hills, Massachusets USA for the first time outside Europe.
26 Local Conservationists contested the right to proceed with the even & tried to obtain a court injunction, only by a Technicality did the event get underway at 7am on Monday. Czechs again romped away with it overall, whilst 750cc BMWs weighing 300 lbs proved more of a handfull than expected. 10 Trophy teams were in the melting pot at the end of the first Day. Army Vase B team was fine, Army Vase A team had lost T Walker with surprisingly a vibrating Sachs power plant. Arthur Browning had a series of Punctures causing a 4 minute Penalty.
Names plus info if you can please help, a list of names finishers results plus a programme? even a photocopy we wd dream of one.
Well here it is this is the 1973 Bad Rock 2 Days, Bad Rock is at Athena in Oregon & the pic shows Canadian Dave Mungenast with Ken Payne in the background, then Mike Poe & in the Sunglasses is Dennis Bershaw who came to our help identifying this & then Stan Syphens, so BIG THANKS TO DENNIS BERSHAW!!! Thanks to Helmut Clasen ‘Speedy’ again Canadian Checkpoint here with Ron Keyes sitting on the machine
The Penton USA Team poses for a photo.
Back row: Jim Hollander, Paul Danik, Carl Cranke, Billy Uhl, Doug Wilford, Joe Barker. Front row: Dane Leimbach, Tom Penton, John Penton – Manager, Jeff Penton, Jack Penton.
Jim was the top scoring Privateer during the qualifiers in the USA in ’73 with 5 Gold Medals, and was placed on the 4-man Vase B Team. Riding a 125cc, Jim was the only Penton rider not to finish that year, ending up in the hospital following a crash in the woods. Penton’s disappointment that year was compounded by Jeff Penton dropping to a Bronze w/ silicone sealant clogging the carb.
Here is another of 258 looking well received everywhere. Helmut Clasen again to rescue us identifying Ron Keyes with the Canadian Managers, thanks .
The Final Score: Results
Speedtracktales wishes to thank Marc Pétrier of FIM Information Resources who has facilitated the scanning of the FIM archive of ISDT results material and is allowing us to make it available here as a public service. Read a copy of the original Results and Stewards Report at the link below.
View the Stewards Report for the 1973 ISDT here
With HUGE THANKS TO KIRK FOR KINDLY PRESENTING US WITH THIS DATA:_
48th International Six Days Trial Dalton, Massachusetts, USA 1973
Trophy winner: Czechoslovakia,
Vase Winner – United States.
Magazine Articles…U.S. Article…Canadian Article
U.S. Riders Canadian Riders
Results of 1973 ISDT Qualifiers
The U.S. rider results were provided by Jeff DeBell
Interesting side note
- 50cc class: No US riders
- 75cc class: No US riders
100cc class: 16 total riders
- 5th Bill Uhl(30) Penton Gold medal
- 9th Dane Leimbach(20) Penton Gold medal
125cc class: 71 total riders
- 17th Joe Barker(34) Penton Gold
- 20th Stellan Tingstrom (75) Monark Gold
- 21st Doug Wilford (67) Penton Gold
- 23rd Paul Danik (81) Penton Gold
- 30th Tom Penton(57) Penton Silver
- 54th Jim Hollander (98) Penton Retired
- 57th Les Grable(107) Dalesman Retired
175cc class: 54 riders
- 19th Bren Moran(55) Puch Silver
- 20th Dick Burleson(125) Husqvarna Silver
- 29th Jeff Penton(112) Penton Bronze
- 35th Jim Sparkes(119) Puch Retired
- 46th Tom Clark(141) Puch Retired
250cc class: 67 riders
8th Carl Cranke(189) Penton Gold
13th Malcolm Smith(168) Husqvarna Gold
17th Charlie Vincent(185) Ossa Gold
22nd Don Cutler (209) Ossa Silver
27th Dave Latham (161) Ossa Silver
32nd Jim Piasecki(200) Husqvarna Bronze
42nd Ken Maahs(207) Husqvarna Bronze
350cc class: 27 riders
- 6th Jack Penton(240) Penton Gold
- 12th Ron Bohn(229) Husqvarna Silver
- 13th Gary Snider(236) Rokon Silver
- 14th Carl Berggren(225) Lind-Qvarna Bronze
- 15th Jim Fogle(232) Rokon Bronze
- 17th Ron LaMastus(223) Rokon Bronze
- 18th Jim Simmons(244) Rokon Bronze
500cc class: 36 riders
- 10th Ben Bower(248) Husqvarna Gold
- 11th Jake Fischer(271) Husqvarna Gold
- 15th Gary Surdyke(251) Yamaha Bronze
- 17th Barry Higgins(260) Kawasaki Retired
- 18th Lars Larsson(255) Kawasaki Retired
- 22nd Mike Patrick(266) Kawasaki Retired
- 23rd Eric Jensen(282) Kawasaki Retired
- 27th Ron Bishop(274) Kawasaki Retired
- 34th Don Stover(249) Husqvarna Retired
1300cc class: 18 riders
- 3rd Ed Schmidt(284) Husqvarna Gold
- 7th Dave Mungenast (299) Triumph 510 Silver
- 9th Dave Eames(290) Husqvarna Silver
- 10th John Greenrose(293) Triumph Silver
- 18th Ken Harvey(287) Triumph Retired
World Trophy Teams: 12 teams
- 5th: USA-Tom Penton, Jack Penton, Jeff Penton, Carl Cranke, Dane Leimbach,
- Bill Uhl.
Silver Vase Teams: 25 teams
- 1st: USA “A”-Dick Burleson, Malcolm Smith, Ed Schmidt, Ron Bohn
- 23rd: USA “B”-Tom Clark, Don Stover, Lars Larsson, Jim Hollander
Manufacturers Teams: 50 teams
- 9th: Husqvarna “A”-Malcolm Smith, Ron Bohn, Ed Schmidt
- 11th: OSSA USA-Dave Latham, Charlie Vincent, Don Cutler
- 17th: Penton “A”-Jack Penton, Jeff Penton, Doug Wilford
- 20th: Rokon USA-Jim Simmons, Gary Snider, Jim Fogle
- 30th: Penton “B”-Carl Cranke, Tom Penton, Jim Hollander
- 34th: Triumph USA-Dave Mungenast, Ken Harvey, John Greenrose
- 46th: Kawasaki USA-Eric Jensen, Ron Bishop, Mike Patrick
Club Teams: 24 teams
- 6th: Amherst Meadowlarks-Jim Piasecki, Doug Wilford, Paul Danik
- 7th: Greylock Riders-Jake Fischer, Dave Eames, Carl Berggren
- 10th: Golden Gators-Ben Bower, Joe Barker, Barry Higgins
- 11th: Twin City Competition Riders-Stellan Tingstrom, Jim Sparkes, Gary
- 19th: Lansing Motorcycle Club-Les Grable, Ron LaMastus, Ken Maahs
Interesting side note: In the official program of the 1973 ISDT, Bultaco observed trials champion Lane Leavitt is listed on the Vase “B” team. Lane declined to ride the ISDT after Bultaco would not outfit him with a prototype Frontera (as used by some of the Spanish factory riders) and instead wanted to mount him aboard a Matador. Lane argued that the Matador would not finish the six days of riding. He was also contesting the observed trials championship in 1973 and after declining the Vase ride, went on to capture the trials championship astride a Sherpa T. Jim Hollander was drafted to fill Leavitt’s spot on the Vase B team.
Canadian Riders U.S. Riders
- 38th Eric Neilson(49) Can-Am Silver
- 40th Jeff Smith(61) Can-Am Bronze
- 41st Dan Amor(74) Honda Bronze (actually rode an XL175 Honda)
- 42nd Klaus Rung(105) Zundapp Bronze
- 56th Helmut Clasen(93) Zundapp DNF
- 58th Jim Fisher(39) Zundapp DNF
- 59th Dave Smith(77) Zundapp DNF
- 60th Derek Browne(83) Zundapp DNF
- 70th Ron Matthews(100) Can-Am DNF
- 11th Bob Fisher(121) Can-Am Gold
- 25th Hugh Lim(166) Kawasaki Silver
- 33th Bill Sharpless(155) Can-Am DNF
- 26th Murray Dochstader(182) Kawasaki Silver
- 41st Harold Perepalkin(188) Bultaco Bronze
- 59th Jim Fenwick(212) Ossa DNF
- 60th Larry Gillespie(203) Ossa DNF
- 13th Ron Keys(258) Yamaha Silver
- 29th Robin Teeling(267) Yamaha DNF
- 30th Roger Yakely(283) Yamaha DNF
- 35th George Buchar(275) Jawa DNF
World Trophy Teams: 12 teams
- 11th Canada – Bob Fisher, Keys, Jim Fisher, Clasen, Dave Smith, Jeff Smith
Silver Vase Teams: 25 teams
- 12th Canada “B” – Dochstader, Neilson, Sharpless, Fenwick
- 20th Canada “A” – Gillespie, Perepalkin, Amor, Buchar
Manufacturers Teams: 50 teams
- 36th Can-Am(Can) – Bob Fisher, Neilson, Matthews
- 44th Yamaha(Can) – Keys, Teeling, Yakely
- 49th Zundapp(Can) – Clasen, Dave Smith, Jim Fisher
Team Results” Trophy – 11th. Vase: (Canada B) 12th. and Canada A- 20th.
Supporters: Jim Kelly, Team Manager and Co-ordinator , Larry Bastedo, Jury.(Too many others to list).
Could someone please provide names plus info. to see if this really is genuine?. That was our call so BIG BIG THANKS to Jim Hollander again for helping us all,
Both Machines screaming PENTON heavily marked.
Photo of #301 #300 #285 #295 4 man German BMW team at ISDT 1973.
Photo of #295 Herman Schek ISDT 1973
Photo of #295 Herbert Schek firing up the big BMW twin at ISDT 1973
thanks to Leo Keller for info.
Artefacts and Collectibles
Where are they now?
Check out the feature in Folk’s and Motors to see the Team USA Triumphs of #287 Ken Harvey
17 year old Joe Barker rode his 1st ISDT and was top American rider in the 125cc class and 4th American overall and possibly youngest rider at that time to win a Gold Medal. He rode on the US Trophy team to following year in Italy.
john boothroyd said:
i have a copy of the 1973 program if you are still needing one, free to a good cause where would i send it? john
Wow cant say thank you enough, I thought the programme would be A5 and a dozen or so pages , I did not expect a book. Thank you very much John I hope to get ti scanned and hope you continue to enjoy the work we are doing here.
Jean-Marc Oziol said:
“The French Team in their uniform at the opening ceremony, can any body put names to faces here?”
Left to Right : Christian Rayer, Bernard Chauvière (Manager), Joël Queirel, Nicolas Samofal, Jean-Marie Huguet, Jean-Louis Figureau, Charles Coutard
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Do you have any information on the Polish team WSK?
Thanks for your visit and enquiry I can check the program and results sheet but for the moment thats all I am likely to have however I hope others reading this may be able to help you better in the future.
About Giorgio Mazzilli and his beautiful bikes, please go to
I have what I believe to be the only Mazzilli in the US. It’s a Series 3 in red and blue. I imported it from Italy in 2005 and will riding it in its fourth ISDT Reunion Ride appearance next weekend in Athens, OH.
arthur williams said:
that rider 262 at the start of the test is dave jerimiah
Pingback: Restored ISDT classic – ex works Puch MC 175 ex ISDT 1973 appears on eBay | Speed Track Tales
Denny "Budman" Kobza said:
Awesome stuff !!
I was looking for pics of Ben Bowers. Met his wife today. She attends my aerobics class here the tr Bay Area. When she told me he raced 6 days I started throwing out names. Chris Carter, Dick Burlson, Malcolm Smith and she was amazed I knew them.
Love the Penton and other pics. Thanks for the site!
Denny Welcome and thanks for your kind comments. Hope we get more material to satisfy your interest too and we are always open to any material from the US of Euro events or the US home ISDT. Thanks
terry dishroon said:
john penton told me that the polish team did not have any oil so he gave them oil . they could not read English and put fork oil in gas and the engines did not last on the wrong oil.
blimey…. not the kind of bounce you want in your pistons…..
Hello many years a go ive sold and sended to Rick Yamane Ca the only one Mazzilli 125 in US ciao
Robert Mcaninch said:
I was only 14 years old then but was an avid dirt biker that rode with elder bikers that rode enduros in western NY, Pa, Ohio and Canada. My buds went to the ISDT in Mass and brought me back a jersey. We all rode Penton motorcycles. I haven’t been able to find a picture of the jersey. It’s red white and blue with USA PENTON on it. I’ll send you a picture of it does anyone recognize it?
Glenn Reynolds said:
Does anyone have a list of the 16 riders and bikes in the 100cc class?
I worked the 6 Days as a checker. I have a lot of memobeale from it. I am down sizing because I moved into a smaller house, is there anyone who’s buys 6 day memobeale.
Brian, your best bet is to get it onto one of the auctions by Bonhams got the classic bike shows the collectors who will pay what the stuff is worth
Mark Harrington said:
I’m a friend of Rokon factory rider way back then his mane is Jim Simons he has lots of information plus a couple books