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Big head Bullet \Fury #153985
07/10/08 4:10 pm
07/10/08 4:10 pm
Joined: Mar 2005
Posts: 2,502
upstate ny
G
George Elston Offline OP
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George Elston  Offline OP
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G
Joined: Mar 2005
Posts: 2,502
upstate ny
Could someone enlighten me as to the differences between a standard Bullet ,a Big Head and a Fury . And does anyone own one who could comment on the difference in performance . Were Furys only available in he US ?
George


57 Woodsman
64 Interceptor
58 Trailblazer
59 Constellation
64 500 Sport twin
61 Hornet

2001 W650
1966 W1
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Re: Big head Bullet \Fury #153986
07/10/08 5:31 pm
07/10/08 5:31 pm
Joined: Mar 2007
Posts: 557
San Antonio, Texas
R
rotorwrench Offline
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rotorwrench  Offline
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R
Joined: Mar 2007
Posts: 557
San Antonio, Texas
The big head was first fitted to the mid to late 1959 Indian Westerner race/trials bikes for US export. It was the basis of the new Royal Enfield Bullet Fury 500 bikes until they quit production of the singles in the early 60s. The Indian name was going out the door for American export machines in 59, so most of the ones produced were Royal Enfield Fury models. I still think this was one of the best singles ever produced in the UK. They are just a solid heavy duty looking machine and from what I've been told they were very robust & could take quite a bit of abuse. Weak points were the same old clutch & transmission that the older bullets used.

Kerby
PS: Although a 500 Bullet was manufactuerd for the UK home market, I think the Fury was a USA export item only. I haven't seen any that were manufactured after 1962.

Re: Big head Bullet \Fury #153987
07/11/08 12:11 am
07/11/08 12:11 am
Joined: Jan 2005
Posts: 971
Ontario Canada
Don Leaming Offline
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Don Leaming  Offline
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Joined: Jan 2005
Posts: 971
Ontario Canada
The Big Head was the last rendition of the standard 500cc Bullet and was produced from 59 'til the end of Bullet prod'n in Redditch. According to Gordon May's book in 1959 "new Big Head light alloy cylinder head with cast in rocker boxes seen on 500 models later in the year."
Long time REOC/NA member, Tom from Ottawa is at the rally in Penna. right now with his Big Head. They were only rated at 27 hp. but from all accounts were a lot quicker than the standard 500. A friend who runs a 500 madras Bullet has ridden Tom's Big Head and has said it is much more powerful right thru the rev range.
AFAIK they have bigger valves and an improved intake track as well as the hotter valve timing of the short circuit racer. I don't know if it had a different camshaft but RE made several hotter versions than the standard as well as 8 and 9 to 1 comp. pistons to go in their short circuit racer.
Don't know anything about the Fury except I'm certain that they have the same head with the cast in rocker boxes and an even bigger exhaust valve than the Big Head.
Don


1965 Royal Enfield Interceptor
1969 Triumph Tiger 650
Re: Big head Bullet \Fury #153988
07/11/08 12:43 pm
07/11/08 12:43 pm
Joined: Mar 2005
Posts: 2,502
upstate ny
G
George Elston Offline OP
BritBike Forum member
George Elston  Offline OP
BritBike Forum member
G
Joined: Mar 2005
Posts: 2,502
upstate ny
Thanks gents
27 HP seems pretty good . Not a Goldie by any stretch but not bad . Seems like the stock one was under 20 . I watch eBay regularly and only remember one big head on there . Rare as rocking horse poo I guess .
George


57 Woodsman
64 Interceptor
58 Trailblazer
59 Constellation
64 500 Sport twin
61 Hornet

2001 W650
1966 W1
Re: Big head Bullet \Fury #153989
07/11/08 6:32 pm
07/11/08 6:32 pm
Joined: Apr 2007
Posts: 526
Southeast Usa
B
Bigtwin Offline
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Bigtwin  Offline
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B
Joined: Apr 2007
Posts: 526
Southeast Usa
Hey, George!
Sorry, I can't send you the link... For whatever reason google won't search this am... But, if you want to know more about the Big Head Fury engine contact Bruce Hargetsinger (spelling?). His business is Mold Threads,Inc. & he has a website Royal Enfield Racing with Bullet bits available. He has been smoking Goldstars for years with his RE/Indian singles. My last conversation with him a while back was that he was contemplating casting the Fury top end set-up. I'm sure there is a market out there since all of the competition guys world wide are looking for the top ends, and Bruce has the capability to do it. Anyway, Bruce is one heck of a nice guy, with lots of experience & expertise on RE singles. I'll keep looking for more contact info once this damnable computer functions correctly.

Bigtwin

Re: Big head Bullet \Fury #153990
07/11/08 8:02 pm
07/11/08 8:02 pm
Joined: Jan 2005
Posts: 971
Ontario Canada
Don Leaming Offline
BritBike Forum member
Don Leaming  Offline
BritBike Forum member
Joined: Jan 2005
Posts: 971
Ontario Canada
The standard 1957-58 500 bullet was rated at 25 hp. It would be really good if someone would come on with the Big Head/Fury top end 'cause I'm thinkin they would bolt right up to the earlier Bullets and probably the Madras 500s. Now wouldn't that make for a readily available and fun thumper!
I should have mentioned that John Ruff has a Fury he is building up, and when he is back from Brad's REOC/NA Rally maybe he can enlighten us.
Don
1965 Interceptor
1970 Interceptor


1965 Royal Enfield Interceptor
1969 Triumph Tiger 650
Re: Big head Bullet \Fury #153991
07/11/08 10:47 pm
07/11/08 10:47 pm
Joined: Mar 2007
Posts: 557
San Antonio, Texas
R
rotorwrench Offline
BritBike Forum member
rotorwrench  Offline
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R
Joined: Mar 2007
Posts: 557
San Antonio, Texas
If you want to check out Shel Thuet's big head Fury #27 that was riden By Elliott Schultz & others at Ascot, here is a link to Dan Rouit's Flat Track Museum. www.vft.org/rouit.html
Just look for the links to the Gallery & then the British bikes.

I know that bike & rider/tuner combo kicked a few butts back in the day.

Beno Rodi has some big head tidbits on his site too.

Kerby

Re: Big head Bullet \Fury #153992
07/12/08 12:10 am
07/12/08 12:10 am
Joined: Aug 2001
Posts: 1,105
Kansas City, USA
J in KC Offline
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J in KC  Offline
BritBike Forum member
Joined: Aug 2001
Posts: 1,105
Kansas City, USA

Re: Big head Bullet \Fury #153993
07/12/08 3:06 pm
07/12/08 3:06 pm
Joined: Aug 2001
Posts: 1,105
Kansas City, USA
J in KC Offline
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J in KC  Offline
BritBike Forum member
Joined: Aug 2001
Posts: 1,105
Kansas City, USA

Re: Big head Bullet \Fury #153994
07/12/08 3:58 pm
07/12/08 3:58 pm
Joined: Apr 2007
Posts: 526
Southeast Usa
B
Bigtwin Offline
BritBike Forum member
Bigtwin  Offline
BritBike Forum member
B
Joined: Apr 2007
Posts: 526
Southeast Usa
Greetings all!

As promised here is the link to Mold Threads/ Vintage Enfield Racing:

http://www.enfieldracing.com/

In addition to the Fury & Bullet Engine bits, check out the Timken Tapered Steering Stem set- up!

Maybe Bruce will produce the Fury top ends some day... He sure does nice work! Pretty damn quick on the track, too!

Bigtwin

Re: Big head Bullet \Fury #153995
07/12/08 4:27 pm
07/12/08 4:27 pm
Joined: Aug 2001
Posts: 1,105
Kansas City, USA
J in KC Offline
BritBike Forum member
J in KC  Offline
BritBike Forum member
Joined: Aug 2001
Posts: 1,105
Kansas City, USA

Re: Big head Bullet \Fury #153996
07/14/08 12:05 am
07/14/08 12:05 am
Joined: Dec 2007
Posts: 259
australia
D
douglas Offline
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douglas  Offline
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D
Joined: Dec 2007
Posts: 259
australia
J in KC, nothings coming out this end??

Re: Big head Bullet \Fury #153997
07/14/08 1:33 pm
07/14/08 1:33 pm
Joined: Jan 2008
Posts: 109
Ontario Canada
T
T.W.Craig Offline
BritBike Forum member
T.W.Craig  Offline
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T
Joined: Jan 2008
Posts: 109
Ontario Canada
As recanada said the standard Bullet was rated at 25hp, Bighead at 27 and Fury/Westerner at 34 hp.The Bighead and Fury had different part numbers but this mainly was to distinguish the difference in the intake port size as the Fury had the carb mounts spaced wider and port opened up for a GP or TT carb.Fury ran a comp. mag and slim primary while a Bighead ran a distributer and alternator.The Fury had an Alfin barrel and straight thru exhaust. In other words all the light stuff went on the Fury and the heavy crap on the Bullet.Any distributor could get a Fury but the bulk was US orientated. Tom



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