The 1970 Isle of Man TT, the fourth round of the 1970 Grand Prix motorcycle racing season, involved a number of races on the Mountain Course on the Isle of Man. For the third consecutive year, Giacomo Agostini won both the Junior and Senior races, completing the six laps of the latter race in 2:13.47.6 to win by over five minutes. There were three "production" categories; Malcolm Uphill won the 750 cc Class after Peter Williams (Norton) ran out of petrol while leading the race, allowing Uphill to pass him mere yards from the finish line. Frank Whiteway won the 500 cc Class and Chas Mortimer the 250 cc Class. German pairs won both sidecar events; Klaus Enders and Wolfgang Kalauch in the 500 cc and Siegfried Schauzu and H. Schneider in the 750 cc. Kel Carruthers won the Lightweight 250 cc race, while Dieter Braun won the Lightweight 125 cc. Braun's victory was notable because he was one of only seven riders to have won an Isle of Man TT race in their first attempt. Due to the circuit's 37.7 mile length, it usually takes competitors two or three attempts before they learn its nuances.
There were six fatalities among the competitors, including world championship contender Santiago Herrero, making this the deadliest year in the history of the Isle of Man TT.
1970 Isle of Man Production 750 cc TT final standings 5 Laps (188.56 Miles) Mountain Course. Rank Rider Number cc Machine Cylinders Speed Time 1 Malcolm Uphill 1 649cc Triumph T.120 Twin 97.71 mph 1:55.51.0 2 Peter Williams 18 746cc Norton Commando Twin 97.69 mph 1:55.52.6 3 Ray Pickrell 12 745cc Dunstall Norton Twin 95.86 mph 1:58.05.2 4 Tom Dickie Triumph 94.14 mph 2:00.15.0 5 Bob Heath 5 741cc BSA Rocket Three Three 94.09 mph 2:00.19.0 6 Hans-Otto Butenuth 17 745cc BMW R75/5 Twin 93.54 mph 2:01.01.8 7 Steve Spencer 2 745cc Norton Atlas Twin 93.18 mph 2:01.29.2 8 Tommy H. Robb 11 736cc Honda CB750 Four 92.26 mph 2:02.42.0 9 John Cooper 6 736cc Honda CB750 Four 91.32 mph 2:03.57.6 10 Pat Mahoney Norton 89.77 mph 2:06.06.0 11 Tom Armstrong 33 746cc Norton Commando Twin 85.62 mph 2:12.13.8 12 Martyn Ashwood Triumph 85.61 mph 2:12.14.2 DNF Brian Steenson 10 741cc BSA Rocket Three Three - DNF DNF Robin Duffty 14 649cc Triumph T.120 Twin - DNF DNF Darryl Pendlebury 23 668cc Triumph Bonneville Twin - DNF DNF Gerald Carter 37 649cc Triumph T.120 Twin - DNF DNF Alan Barnett Triumph - DNF DNF Paul A Smart 3 741cc Triumph Trident Three - DNF DNF Tony Jefferies 19 668cc Triumph Bonneville Twin - DNF DNF Billie Nelson 15 746cc Norton Commando Twin - DNF DNF George Fogarty 20 746cc Norton Commando Twin - DNF DNF A.D.Carlton 36 746cc Norton Commando Twin - DNF DNF Martin Carney 26 741cc Triumph Trident Three - DNF DNF Doug Cash 34 746cc Norton Commando Twin - DNF DNF Peter Darvill 30 736cc Honda CB750 Four - DNF DNF David Nixon 31 649cc Triumph T.120 Twin - DNF Sources:
1970 Isle of Man Production 500 cc TT final standings 5 Laps (188.56 Miles) Mountain Course. Rank Rider Number cc Machine Cylinders Speed Time 1 Frank Whiteway 41 492cc Suzuki T500 II Twin 89.94 mph 2:05.52.0 2 Gordon Pantall 54 490cc Triumph Daytona Twin 88.90 mph 2:07.20.0 3 Ray Knight 44 490cc Triumph Daytona Twin 88.89 mph 2:07.20.4 4 Ron Baylie 42 490cc Triumph Daytona Twin 87.58 mph 2:09.15.0 5 Graham Penny 40 444cc Honda CB450 / Triumph Twin 86.70 mph 2:10.34.4 6 Jeffrey Wade 53 492cc Suzuki T500 II Twin 85.31 mph 2:12.42.0 7 Brian Finch 51 499cc Velocette Thruxton Single 83.86 mph 2:14.59.0 DNF Mick Chatterton 49 490cc Triumph Daytona Twin - DNF DNF Hugh Evans 48 499cc BSA A50 Twin - DNF DNF Paul Coombs 50 490cc Triumph Daytona Twin - DNF DNF Barry Smith Honda - DNF Sources:
1970 Isle of Man Production 250 cc TT final standings 5 Laps (188.56 Miles) Mountain Course. Rank Rider Number cc Machine Cylinders Speed Time 1 Charles "Chas" S.Mortimer 60 248cc Ducati Mark III D Single 84.87 mph 2:13.23.4 2 John Williams 45 Honda 84.80 mph 2:13.29.0 3 Stan Woods 61 247cc Suzuki T250 Hustler Twin 84.06 mph 2:14.40.6 4 Graham Hunter 73 248cc Ducati Mark III D Single 83.94 mph 2:14.52.4 5 Roy W.Boughey 69 249cc Honda CB 250 Twin 82.26 mph 2:17.37.6 6 Raymond Ashcroft 76 249cc Honda CB 250 Twin 76.59 mph 2:27.48.8 7 Tom Loughridge 70 247cc Suzuki T20 Twin 76.32 mph 2:28.19.0 8 Clive K.Luton 78 249cc Ducati Mach I Single 72.50 mph 2:36.08.0 DNF Danny Shimmin 63 247cc Suzuki T20 Twin - DNF DNF Malcolm Kirwan 79 244cc Bultaco Metralla Single - DNF DNF Bill Robertson 72 247cc Suzuki T20 Twin - DNF DNF Roger Corbett 71 247cc Cotton Conquest Single - DNF DNF Jim Curry 62 249cc Honda CB 250 Twin - DNF DNF Lindsay S.Porter 68 247cc Suzuki T20 Twin - DNF DNF Clive P.Thompsett 64 249cc Ducati Mach I Single - DNF Sources:
1970 Isle of Man Sidecar 750cc TT final standings 3 Laps (113.00 Miles) Mountain Course. Rank Riders Number cc Machine Make Cylinders Speed Time 1 /Horst Schneider 4 501cc BMW Twin 90.21 mph 1.15.18.0 2 Peter Brown/Mick Casey 2 744cc BSA Three 85.97 mph 1.19.00.4 3 E.H.Leece/John Molyneaux 18 725cc LMS Twin 81.02 mph 1.23.50.2 4 Bill Cooper/D B Argent 16 654cc WEC Twin 80.68 mph 1.24.11.8 5 Mick Horsepole/E MacPherson 15 668cc Bingham Triumph Twin 80.64 mph 1.24.14.2 6 A.J.Sansum/Alex MacFadzean 17 649cc Triumph Twin 79.58 mph 1.25.21.6 7 Mac Hobson/Geoff Atkinson 11 654cc Windrick BSA Twin 79.44 mph 1.25.30.6 8 A.Swindells/D.Bayer 43 750cc Curley Atlas / Norton Twin 79.02 mph 1.25.57.0 9 Roy S.Woodhouse/Doug J.Woodhouse 93 736cc Honda Four 78.39 mph 1.26.38.6 10 Peter Krukowski/Alistair Lewis 82 654cc BSA Twin 77.76 mph 1.27.21.0 11 M.S.Whitton/F.Haslam 94 654cc Rumble BSA Twin 77.49 mph 1:27.39.0 12 John Barker/Chris Emmins 88 649cc Reynoldson Triumph Twin 77.27 mph 1:27.54.0 13 T.Rudd/J.West 71 649cc RWS Triumph Twin 76.94 mph 1:28.17.4 14 Fred Hanks/Don Williams 54 654cc BSA Twin 75.48 mph 1:29.59.0 15 Derek R.Yorke/A.Poole 28 649cc Triton Twin 75.08 mph 1:30.28.4 16 Trevor J.Ireson/D.H.J.Lockett 58 650cc ETY Triumph Twin 75.05 mph 1:30.30.2 17 Roy Bell/J.Wetherell 40 654cc Windrick BSA Twin 74.96 mph 1:30.36.8 18 Fred B.Cornbill/Mike G.Tinkler 48 649cc Triumph Twin 74.96 mph 1:30.36.8 19 Mick D.Wortley/J.Wilson 61 740cc MDW III Three 74.90 mph 1:30.41.2 20 Peter Sheridan/P.Smith 81 654cc BSA Twin 74.85 mph 1:30.44.8 21 S.J.Downes/J.O.Harris 84 649cc Triumph Twin 73.76 mph 1:32.05.0 22 Keith Graham/G.J.Sewell 27 649cc Triumph Twin 73.15 mph 1:32.51.0 23 J.Coxon/Stephen Galligan 76 654cc Rumble BSA Twin 73.10 mph 1:32.55.2 24 Fred G.Lewin/Miss Lesley Broadley 97 750cc Norton Twin 72.14 mph 1:34.09.0 25 G.A.Bye/A.D.Lodge 29 650cc ETY Triumph Twin 71.70 mph 1:34.44.2 26 D.W.North/David R.Bickley 87 649cc Greenwood Triumph Twin 71.58 mph 1:34.53.2 27 Dave F.Dickinson/S.Cooper 53 750cc BMW Twin 70.77 mph 1:35.58.6 28 Derek Rumble/J.H.Graham 98 654cc Rumble BSA Twin 70.47 mph 1:36.23.8 29 Barrie R.Moran/Ken B.Moran 73 650cc L&B Norton Twin 70.43 mph 1:36.26.0 30 D.Bradford/R.Makepeace 90 750cc Norton Twin 70.06 mph 1:36.57.0 31 R.J.Beales/Mrs. J.R.Beales 99 649cc Triumph Twin 68.86 mph 1:38.38.8 32 A.W.J.Teasdale/Nick Boret 50 706cc RGM Triumph Twin 67.62 mph 1:40.27.4 33 R.C.Smith/Ian Forrest 41 649cc Triumph Twin 67.58 mph 1:40.30.8 34 Brian Mee/P.F.Louis 89 654cc BSA Twin 65.89 mph 1:43.05.0 35 R.L.A.Cave/Roger Osbourne 62 649cc Triumph Twin 65.55 mph 1:43.37.0 36 Derek L.Plummer/Malcolm Brett 12 649cc Kettle Triumph Twin 61.75 mph 1:50.00.0 37 Jack Forrest/W.A.Forrest 39 654cc BSA Twin 61.19 mph 1:51.00.4 38 John Campbell/L.Mansfield 66 745cc Campbell Norton Twin 60.78 mph 1:51.45.0 DNF /Hermann Hahn 8 750cc BMW Twin - DNF DNF A.T.Baitup/P.Diprose 55 649cc Triumph Twin - DNF DNF E.B.Bardsley/P.R.Cropper 49 740cc Triumph Three - DNF DNF Mick E.Boddice/Clive Pollington 9 744cc BSA Three - DNF DNF John S.Brandon/Cliff A.Holland 26 736cc JCLS Four - DNF DNF Arneus Butscher/Karl Lauterbach 3 542cc BMW Twin - DNF DNF R.Cass/D.Jose 45 650cc CJ Triumph Twin - DNF DNF S.A.Clapham/J.R.Clapham 70 590cc BMW Twin - DNF DNF J.B.Crick/D.Senior 20 654cc Windrick BSA Twin - DNF DNF L.W.Currie/F.Kay 5 687cc GSM Twin - DNF DNF S.Digby/R.B.Haddrell 78 654cc BSA Twin - DNF DNF Roger Dutton/T.Hickford 42 654cc BSA Twin - DNF DNF Klaus Enders/Wolfgang Kalauch 6 750cc BMW Twin - DNF DNF I.Evans/J.Mathuson 64 750cc IMP SPL Four - DNF DNF R.M.W.Farrant/P.Dade 63 654cc Vincent Twin - DNF DNF Gordon Fox/Hugh Sanderson 19 649cc Triumph Twin - DNF DNF Charlie Freeman/Eddy Fletcher 34 750cc Norton Twin - DNF DNF Jeff B.Gawley/G.F.Alcock 67 654cc BSA Twin - DNF DNF A.Gillender/G.Simpson 75 650cc GSS Twin - DNF DNF R.G.Glover/J.Pennington 47 750cc Norton Twin - DNF DNF Keith S.Griffin/Malcolm Sharrocks 80 725cc SG Triumph Twin - DNF DNF Roy Hanks/Mrs. Rose Hanks 23 654cc BSA Twin - DNF DNF P.J.Hardcastle/R.Janes 30 705cc Chuck-Triumph Twin - DNF DNF Peter Hardy/Ron Hardy 32 650cc HTS Twin - DNF DNF T.Harris/B.L.Harris 36 649cc Triumph Twin - DNF DNF Dick J.Hawes/J.P.Mann 33 515cc RGM Seeley Single - DNF DNF M.A.Hunt/Colin C.Newbold 79 649cc Triumph Twin - DNF DNF Dennis Keen/G.C.Hunt 25 649cc Triumph Twin - DNF DNF Bob Kewley/J.Whiting 24 654cc Rumble BSA Twin - DNF DNF Ernie N.Lloyd/T.J.Harrington 95 649cc Triumph Twin - DNF DNF W.E.Lomas/C.Money 51 654cc BSA Twin - DNF DNF /H.Cusnik 10 750cc BMW Twin - DNF DNF D.Maplethorpe/J.Coaten 74 649cc Triumph Twin - DNF DNF Ian McDonald/Andre Witherington 37 649cc Triumph Twin - DNF DNF J.Mines/G.Davis 35 740cc Triumph Three - DNF DNF Alan Moss/R.English 56 649cc Triumph Twin - DNF DNF Henry C.Munson/R.H.Ashenden 52 649cc Triumph Twin - DNF DNF George W.O'Dell/P.J.Stockdale 83 649cc Triumph Twin - DNF DNF Mick J.C.Potter/N.Panter 46 744cc BSA / Triumph Three - DNF DNF R.Powell/W.R.Boldison 77 649cc PB Triumph Twin - DNF DNF J.Renwick/P.Kennard 92 746cc Vincent Twin - DNF DNF G.R.Richards/W.E.Cooper 69 750cc DBS Twin - DNF DNF Steve J.Sinnott/Jim Williamson 21 750cc SWS Twin - DNF DNF C.Smith/James Law 59 654cc BSA Twin - DNF DNF R.Smith/R.Fiddes 60 649cc Triumph Twin - DNF DNF Mick Tombs/T.Tombs 31 654cc BSA Twin - DNF DNF B.R.Tomlins/P.T.Whiteside 68 654cc BSA Twin - DNF DNF Pete Tyack/P.Meehan 44 650cc Reg Allen Triumph Twin - DNF DNF Ernie L.Vant/R.Moore 96 690cc Rickman Triumph Twin - DNF DNF Chris Vincent/Keith Scott 7 644cc CVS Twin - DNF DNF Eric G.Wilmott/M.D.Duncan 65 690cc Rickman Triumph Twin - DNF DNF Terry W.Windle/Rae Hinchcliffe 22 654cc Windrick BSA Twin - DNF DNF D.F.Wood/D.Coomber 57 750cc Curley Atlas Twin - DNF DNF John Wright-Bailey/Eddie D.Kiff 85 649cc Triumph Twin - DNF Sources:
1970 Isle of Man Lightweight TT 250cc final standings 6 Laps (226.38 Miles) Mountain Course.