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- Jul 25, 2010
- Messages
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Bitter tears for glories past . The Olde T100R pre unit , on puke a co'ee , as pictured ( the big Grand Stand goes all the way down now ) buttoning OFF @ 7200 , as it goes flat there ( @ 120 @ 7000 )
( 1965 Repco Brabham / Coventry Climax 2.5s . With spacer plate for long stroke :shock: 
. not the V8s 
)
itl gurrgle & come on again and hit 7600 if the throttle muscle overrules the brain muscle ( its o.k. the redlines actuall 8.000 NOT 7 , as I thought . Im sure that needle was hitting 8 in 2nd , holding
5.000 off the line , to lead 500 class ! :lol: :lol: in 81 . ANYWAY . good manxes were said to be 60 H.P. & 135 mph . On The Level . Nudge over 140 on the Continant .
PRODUCTION Manx 50 Hp 135 mph run in & in tune . As in a short stroke 1961 .
This is F3 500 tripe ;
Appendix A Specifications of Approved Replica and Factory Engines Produced Post Period
1. Summerfield Standard Specification “Short Stroke” Manx Norton
Bore 86mm Stroke 85.6 mm Combustion chamber - Hemispherical. Inlet valve 1.92 inch dia. Exhaust valve 1.72 inch dia. Valve angle 64 degrees included angle Inlet cam 15822 Exhaust cam M5914 Tappet Dia 0.875 inch Contact radius 1.0 inch Valve timing IVO 67 IVC 98 EVO 85 EVC 64 (0.005inch clearance) Valve springs shall be of period specification hairpin type Con-rod length 6.7 inch (eye to eye) Crankshaft con-rod and bearing construction is free.
2. C & R Engines Ltd “Long Stroke” Manx Norton.
Bore 79.6mm Stroke 100mm Combustion chamber Hemispherical Inlet valve 1.915 inch dia Exhaust valve 1.735 inch dia Valve angle 77 degrees included angle Inlet cam M59 Exhaust cam M59 Tappet Dia 0.75 inch Contact radius 1.0 inch Valve timing IVO 60 IVC 67 EVO 85 EVC 45 (0.004inch clearance) Valve springs shall be of period specification hairpin type Con-rod length 7.5 inch Crankshaft con-rod and bearing construction free.
3. Molnar Standard Specification “Short Stroke” Manx Norton
Bore 86mm Stroke 85.8mm Combustion chamber - Hemispherical. Inlet valve 1.92 inch dia. Exhaust valve 1.72 inch dia. Valve angle 64 degrees included angle Inlet cam 15822 Exhaust cam M5914 Tappet Dia 0.875 inch Contact radius 1.0 inch Valve timing IVO 48 EVC 34 (0.045 inch clearance) Con-rod length 6.7 inch (eye to eye) Valve springs shall be of period specification hairpin type Crankshaft con-rod and bearing construction is free.
blah de blah .
Engines
Norton International S/C Pre-Featherbed 79x100 1947-52 1-3, Norton International S/C Featherbed 79x100 1953-58 2-3, Norton Manx S/C Pre-Featherbed 79x100 1947-50 1-3, Norton Manx T/C Pre-Featherbed 79x100 1947-50 1-3, Norton Manx T/C Featherbed 79x100 1951-53 2-3, Norton Manx 86x86 1954-57 3, Norton Manx T/C Lighthouse 86x86 1958-60 3, Summerfield Standard Spec Norton 86x86 Current 3, Molnar Standard Spec Norton 86x86 Current 3, C & R Engines Norton 79x100 Current 2-3, JAP Speedway 4-Stud 80x99 Pre-War 1-3, JAP Speedway 5-Stud Long 80x99 1946-48 1-3, JAP Speedway 5-Stud Short 80x99 1946-48 1-3, JAP Speedway 4-Stud 80x99 1949-67 1-3, JAP Roadrace Mk 1 80x99 1950-51 1-3, JAP Roadrace 4 Stud Type 6/7 80x99 1952-54 1-3, JAP V-Twin, JAP 84S 84-93 1974 – Not original, BSA Gold Star 1-3, BSA A7 Twin 1-3, Norton ES2/Model 18 1-3, Rudge 4-Valve 1-3, Triumph Pre-Unit 8 Stud 1-3, Vincent Comet 1-3
http://www.500race.org/Regulations/Regulations.html
for comparison . as it appears theres a few types tweking up a few engines , in the 500 displacement class . The Better machines had a full time tuner and alternate engines to maintain serviceability .
See
Intresting his comments on his major prang , single Vs Twin ( the 650 Domi ? ) . He regarded the TWIN as FASTER . well worth a read . Interloan Library ? .
Now where were we ! V Good street Tracker 975 Rob North Triple in a 80s US magazine , all period parts . obviously . includeing the 3 - 1 Exhaust .
pretty much this at 975 with 32 carbs , but Triumph / North .
. not the V8s )itl gurrgle & come on again and hit 7600 if the throttle muscle overrules the brain muscle ( its o.k. the redlines actuall 8.000 NOT 7 , as I thought . Im sure that needle was hitting 8 in 2nd , holding
5.000 off the line , to lead 500 class ! :lol: :lol: in 81 .
ANYWAY . good manxes were said to be 60 H.P. & 135 mph . On The Level . Nudge over 140 on the Continant . PRODUCTION Manx 50 Hp 135 mph run in & in tune . As in a short stroke 1961 .
This is F3 500 tripe ;
Appendix A Specifications of Approved Replica and Factory Engines Produced Post Period
1. Summerfield Standard Specification “Short Stroke” Manx Norton
Bore 86mm Stroke 85.6 mm Combustion chamber - Hemispherical. Inlet valve 1.92 inch dia. Exhaust valve 1.72 inch dia. Valve angle 64 degrees included angle Inlet cam 15822 Exhaust cam M5914 Tappet Dia 0.875 inch Contact radius 1.0 inch Valve timing IVO 67 IVC 98 EVO 85 EVC 64 (0.005inch clearance) Valve springs shall be of period specification hairpin type Con-rod length 6.7 inch (eye to eye) Crankshaft con-rod and bearing construction is free.
2. C & R Engines Ltd “Long Stroke” Manx Norton.
Bore 79.6mm Stroke 100mm Combustion chamber Hemispherical Inlet valve 1.915 inch dia Exhaust valve 1.735 inch dia Valve angle 77 degrees included angle Inlet cam M59 Exhaust cam M59 Tappet Dia 0.75 inch Contact radius 1.0 inch Valve timing IVO 60 IVC 67 EVO 85 EVC 45 (0.004inch clearance) Valve springs shall be of period specification hairpin type Con-rod length 7.5 inch Crankshaft con-rod and bearing construction free.
3. Molnar Standard Specification “Short Stroke” Manx Norton
Bore 86mm Stroke 85.8mm Combustion chamber - Hemispherical. Inlet valve 1.92 inch dia. Exhaust valve 1.72 inch dia. Valve angle 64 degrees included angle Inlet cam 15822 Exhaust cam M5914 Tappet Dia 0.875 inch Contact radius 1.0 inch Valve timing IVO 48 EVC 34 (0.045 inch clearance) Con-rod length 6.7 inch (eye to eye) Valve springs shall be of period specification hairpin type Crankshaft con-rod and bearing construction is free.
blah de blah .
Engines
Norton International S/C Pre-Featherbed 79x100 1947-52 1-3, Norton International S/C Featherbed 79x100 1953-58 2-3, Norton Manx S/C Pre-Featherbed 79x100 1947-50 1-3, Norton Manx T/C Pre-Featherbed 79x100 1947-50 1-3, Norton Manx T/C Featherbed 79x100 1951-53 2-3, Norton Manx 86x86 1954-57 3, Norton Manx T/C Lighthouse 86x86 1958-60 3, Summerfield Standard Spec Norton 86x86 Current 3, Molnar Standard Spec Norton 86x86 Current 3, C & R Engines Norton 79x100 Current 2-3, JAP Speedway 4-Stud 80x99 Pre-War 1-3, JAP Speedway 5-Stud Long 80x99 1946-48 1-3, JAP Speedway 5-Stud Short 80x99 1946-48 1-3, JAP Speedway 4-Stud 80x99 1949-67 1-3, JAP Roadrace Mk 1 80x99 1950-51 1-3, JAP Roadrace 4 Stud Type 6/7 80x99 1952-54 1-3, JAP V-Twin, JAP 84S 84-93 1974 – Not original, BSA Gold Star 1-3, BSA A7 Twin 1-3, Norton ES2/Model 18 1-3, Rudge 4-Valve 1-3, Triumph Pre-Unit 8 Stud 1-3, Vincent Comet 1-3
http://www.500race.org/Regulations/Regulations.html
for comparison . as it appears theres a few types tweking up a few engines , in the 500 displacement class . The Better machines had a full time tuner and alternate engines to maintain serviceability .
See
Intresting his comments on his major prang , single Vs Twin ( the 650 Domi ? ) . He regarded the TWIN as FASTER . well worth a read . Interloan Library ? .
Now where were we ! V Good street Tracker 975 Rob North Triple in a 80s US magazine , all period parts . obviously . includeing the 3 - 1 Exhaust .
pretty much this at 975 with 32 carbs , but Triumph / North .
