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Blistering Barnacles .73 JPN COMMANDO . Ye Landlubbers .
- Thread starter Matt Spencer
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Re: Blistering Barnacles . COMMANDO . Ye Landlubbers .
" No doubt, smoke em if ya got em. " just as well they WERNT sponsered by johhie walker :wink:
38:40 appears to be dennis poore .
" No doubt, smoke em if ya got em. " just as well they WERNT sponsered by johhie walker :wink:
38:40 appears to be dennis poore .
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Re: Blistering Barnacles .73 JPN COMMANDO . Ye Landlubbers
was going to put this on the double post , as the heading here may be perhaps confuseing , that wasnt a bad idea . But its gone . :?
therefore ,
from Classic Racer ' The BOYER Triumps ' ( dunno what issue , slackers dont put it on the pages . )
Stan Shenton = ' Croxford stories abound " I saw him hobling around the boat on the way back from the T T after he crashed the Norton one year .
' im severly injured in the leg from the foot to the ankle ' he told me .The cause he said , was down to some bloke called Butler ( Boyer Rider. )
who passed him on the mountain near some hut or something . Because he could beat him on short circuits he saw no reason why he couldnt in the
Island , so he shot past then came up to a corner , didnt know where he was , and ' fell on the ground .'
So that explains that . :?
was going to put this on the double post , as the heading here may be perhaps confuseing , that wasnt a bad idea . But its gone . :?
therefore , from Classic Racer ' The BOYER Triumps ' ( dunno what issue , slackers dont put it on the pages . )
Stan Shenton = ' Croxford stories abound " I saw him hobling around the boat on the way back from the T T after he crashed the Norton one year .
' im severly injured in the leg from the foot to the ankle ' he told me .The cause he said , was down to some bloke called Butler ( Boyer Rider. )
who passed him on the mountain near some hut or something . Because he could beat him on short circuits he saw no reason why he couldnt in the
Island , so he shot past then came up to a corner , didnt know where he was , and ' fell on the ground .'
So that explains that . :?
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Re: Blistering Barnacles .73 JPN COMMANDO . Ye Landlubbers
There was a quote from one of the Norton riders - unless I misheard (quite possible) - referencing 164 MPH on the straights. Could that be right? That's some serious speed that I didn't think a modified production sort of 750 could achieve back then. Or did I hear it wrong?
There was a quote from one of the Norton riders - unless I misheard (quite possible) - referencing 164 MPH on the straights. Could that be right? That's some serious speed that I didn't think a modified production sort of 750 could achieve back then. Or did I hear it wrong?
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Re: Blistering Barnacles .73 JPN COMMANDO . Ye Landlubbers
Seeing the 72 Bikes were timed at 155 + at Daytona , downhill ( bray ) in a straight line , theyed be faster . a book quotes 72 Ps for them , :? 76 for monocoque . And claims 174 mph for it . seeing its a Australian book , it must be right . :wink: Last Works Trident was alledged to do that , also . 1974 .
Seeing the 72 Bikes were timed at 155 + at Daytona , downhill ( bray ) in a straight line , theyed be faster . a book quotes 72 Ps for them , :? 76 for monocoque . And claims 174 mph for it . seeing its a Australian book , it must be right . :wink: Last Works Trident was alledged to do that , also . 1974 .
Re: Blistering Barnacles .73 JPN COMMANDO . Ye Landlubbers
Motorcycle Racing mag ran a speed trap at the `77 TT, & recorded these figures for the "35th milestone between Creg-ny-Baa & Brandish corner"...
"Classic TT"
1, M.Grant, 750 Kaw : 190.38 mph.
2, B.Smith, 750 Yam : 184.01 mph.
3, S.Parrish, 500 Suz : 182.84 mph.
4, S.Woods, 500 Suz : 180.99 mph.
9, J.Dunlop, 351 Yamsel: 172.90 mph.
No Brit bikes in that one though.
Odd that Mick Grant ,who finished 2nd to P.Williams in that filmed `73 race wasn`t even mentioned, maybe it was his speed that was recorded?
Motorcycle Racing mag ran a speed trap at the `77 TT, & recorded these figures for the "35th milestone between Creg-ny-Baa & Brandish corner"...
"Classic TT"
1, M.Grant, 750 Kaw : 190.38 mph.
2, B.Smith, 750 Yam : 184.01 mph.
3, S.Parrish, 500 Suz : 182.84 mph.
4, S.Woods, 500 Suz : 180.99 mph.
9, J.Dunlop, 351 Yamsel: 172.90 mph.
No Brit bikes in that one though.
Odd that Mick Grant ,who finished 2nd to P.Williams in that filmed `73 race wasn`t even mentioned, maybe it was his speed that was recorded?
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Re: Blistering Barnacles .73 JPN COMMANDO . Ye Landlubbers
Seven Three .
Nineteen Seventy Three .
Whilst Production Road Bike CASTINGS were utilised . Before the Regs were Corrupted .
Seven Three .
Nineteen Seventy Three .
Whilst Production Road Bike CASTINGS were utilised . Before the Regs were Corrupted .
Re: Blistering Barnacles .73 JPN COMMANDO . Ye Landlubbers
Yes, 1973. According to Classic Racer July/August `05, Ginger Molloy,[ Kiwi `70 500 World Championship runner-up,] was, in 1973: "clocked at an incredible 172 mph down the Conrod straight" at Bathurst, on just such a production based racer, H1R 500..
Yes, 1973. According to Classic Racer July/August `05, Ginger Molloy,[ Kiwi `70 500 World Championship runner-up,] was, in 1973: "clocked at an incredible 172 mph down the Conrod straight" at Bathurst, on just such a production based racer, H1R 500..
Re: Blistering Barnacles .73 JPN COMMANDO . Ye Landlubbers
Matt, P.Williams has been quoted re the monocoque - " ...drag area was 0.222 square metres" perhaps you could run that & the 76hp numbers through the speed projection formula that hobot so thoughtfully posted on the SirEddyprojectbike thread?
Matt, P.Williams has been quoted re the monocoque - " ...drag area was 0.222 square metres" perhaps you could run that & the 76hp numbers through the speed projection formula that hobot so thoughtfully posted on the SirEddyprojectbike thread?
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Re: Blistering Barnacles .73 JPN COMMANDO . Ye Landlubbers
So the Norton team engines were 76HP? I'm curious as to what the configuration was that got them to that level? I have seen a Norton factory bulletin re some stage mods - can't recall if there were 2 or 3 stages but would that top stage have been what made them 76 HP or was that stage mod bulletin I'm thinking of essentially just a bit of a power bump for a street bike and unrelated to the race engines?
So the Norton team engines were 76HP? I'm curious as to what the configuration was that got them to that level? I have seen a Norton factory bulletin re some stage mods - can't recall if there were 2 or 3 stages but would that top stage have been what made them 76 HP or was that stage mod bulletin I'm thinking of essentially just a bit of a power bump for a street bike and unrelated to the race engines?
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Re: Blistering Barnacles .73 JPN COMMANDO . Ye Landlubbers
Hymph , 33mm Amals , :?
but , If you spent 200 hours polishing & fettling the engine internals , with the clearances & pre loads & settings dead right , might not be impossible .
Dunstall had inherited the Race Shop , & all tecnical development . The 750s had been run hard for years , so there was no lack of familiarity with them.
They were all the rage for 1970 .
T100 race motor from the boondocks , believed built 1960 . Had had ' a bit of time ' spent on it. youll have to chuck out the T.V. :wink:
Hymph , 33mm Amals , :?
but , If you spent 200 hours polishing & fettling the engine internals , with the clearances & pre loads & settings dead right , might not be impossible .
Dunstall had inherited the Race Shop , & all tecnical development . The 750s had been run hard for years , so there was no lack of familiarity with them.
They were all the rage for 1970 .
T100 race motor from the boondocks , believed built 1960 . Had had ' a bit of time ' spent on it. youll have to chuck out the T.V. :wink:
lcrken
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Re: Blistering Barnacles .73 JPN COMMANDO . Ye Landlubbers
The 76 hp figure is what Peter Williams was quoted as stating for the fully developed 73x89 mm 750 engine at the end of the '72 season. That's with lots of experiments on carbs, cams, port shapes, valve sizes, exhausts, etc. He also said that in '73 they got the 77x80.5 mm short stroke 750 up to 78 hp.
Ken
mike996 said:
The 76 hp figure is what Peter Williams was quoted as stating for the fully developed 73x89 mm 750 engine at the end of the '72 season. That's with lots of experiments on carbs, cams, port shapes, valve sizes, exhausts, etc. He also said that in '73 they got the 77x80.5 mm short stroke 750 up to 78 hp.
Ken
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