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#419324 - 02/18/12 12:00 pm JOHN RENWICK VINCENT EPIMETHEUS  
Joined: Jul 2001
Posts: 2,086
Morgan aka Admin Offline
Ride safe today!
Morgan aka Admin  Offline

Ride safe today!

Joined: Jul 2001
Posts: 2,086
Gothenburg, Sweden
Check this out.. 9 min 37 seconds pure joy! clap clap grin bigt
John Renwick and Ed Wallbank testing Epimetheus, the 1665cc Vincent, on the dynamometer. Nitrous oxide, air operated auto gear change, 7,000rpm and 180bhp from a 1950s British V twin.



BSAing you
Morgan Johansson
BritBike.com.
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#419354 - 02/18/12 3:10 pm Re: JOHN RENWICK VINCENT EPIMETHEUS [Re: Morgan aka Admin]  
Joined: May 2005
Posts: 3,753
shel Online content
BritBike Forum member
shel  Online Content
BritBike Forum member

Joined: May 2005
Posts: 3,753
ohio
very cool!


When given the choice between two evils I picked the one I haven't tried before
#419392 - 02/18/12 6:03 pm Re: JOHN RENWICK VINCENT EPIMETHEUS [Re: Morgan aka Admin]  
Joined: Aug 2001
Posts: 31
Chris Offline
BritBike Forum member
Chris  Offline
BritBike Forum member

Joined: Aug 2001
Posts: 31
Newburyport, MA, USA
Fantastic, what a great video with two good old boys in their workshop.

#419551 - 02/19/12 2:03 pm Re: JOHN RENWICK VINCENT EPIMETHEUS [Re: Morgan aka Admin]  
Joined: Aug 2001
Posts: 367
konon Online content
BritBike Forum member
konon  Online Content

BritBike Forum member

Joined: Aug 2001
Posts: 367
Iowa
Those guys are having some fun!
Great video.


1968 BSA Firebird
1200 HD
XS 1100
1971 Rickman 125
#419572 - 02/19/12 3:43 pm Re: JOHN RENWICK VINCENT EPIMETHEUS [Re: Morgan aka Admin]  
Joined: Aug 2001
Posts: 1,081
Phatt Bob Offline
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Phatt Bob  Offline
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Joined: Aug 2001
Posts: 1,081
Cheshire UK
Very nice, but sooo many questions.

F'rinstance, he's got two foggers, one either side of the inlet. Are they single shot or are they progressive? i.e. the left one, say, is jetted for 20 bhp to get off the line, and the right one another 60 (?) which fires when he's rolling. I guess the two solenoids with the pressure gauge between them are the nitrous solenoids, and the fuel solenoids are elsewhere. He seems to point under the "seat" when mentioning them.

Are "the electronics" a progressive controller?

Probably answered my own question, why have two foggers impeding the inlet if you're not using them seperately? Dave Bartz runs a similar set up on his T140 but has two buttons.

How much of the 180 bhp is gas and how much is Vincent? My guess would be 80 and 100 respectively.

Bob

Edit. Just watched it again. I can see the fuel lines now. Looks like they're live at the same time. confused I'd love to see a schematic of the system. Can't make it out fer all the plumbin'!


Phatt Bob
'95 Daytona 1200
'98 Daytona 1200 dragbike
ex-850 T140 Caff Racer, 850 Triton, Morgo T120, Starfire and Pretend Daytona 500 owner
#419676 - 02/20/12 1:04 am Re: JOHN RENWICK VINCENT EPIMETHEUS [Re: Morgan aka Admin]  
Joined: Sep 2008
Posts: 710
Blown Income Online content
BritBike Forum member
Blown Income  Online Content

BritBike Forum member

Joined: Sep 2008
Posts: 710
Edgewater, Md
That sounds awesome and has to be one fun ride.

Last edited by Blown Income; 02/20/12 1:05 am.

1955 BSA Bantam D1 Plunger
1956 BSA A10RR Street and LSR Bike
1961 BSA C15S
1966 BSA spitfire
1969 Triumph T100C
1970 Triumph TR6R
1972 BSA Lightning LSR Bike
1974 Triumph T150V
#419897 - 02/21/12 12:26 am Re: JOHN RENWICK VINCENT EPIMETHEUS [Re: Blown Income]  
Joined: Aug 2010
Posts: 312
David Dunfey Offline
BritBike Forum member
David Dunfey  Offline
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Joined: Aug 2010
Posts: 312
New Hampshire, USA
This is a photo of John and Eddy on the salt. John is piloting the streamliner he built. You can get 100 hp on gasoline out of a Vincent twin, but above that the heat build up is too great. John has worked around this by doing racing that requires relatively short bursts.

David

#423571 - 03/10/12 3:09 pm Re: JOHN RENWICK VINCENT EPIMETHEUS [Re: David Dunfey]  
Joined: Feb 2007
Posts: 2,200
Semper Gumby Offline
BritBike Forum member
Semper Gumby  Offline
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Joined: Feb 2007
Posts: 2,200
Atlanta, GA USA
I love the part where he talks about "nailing" the throttle wide open on the line. His eyes got real big and I think we got a glimpse of the controlled madness of these fine gentlemen.

Brilliant! Thanks Morgan.

Last edited by Semper Gumby; 03/10/12 3:10 pm.

Gaggle of BSAs
a Honda
an old BMW
and a Montesa
Parking lot Elf in training

Moderated by  Allan Gill 


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