5 speed gearbox?

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5 speed gearbox?

John Halford
anyone heard of a 5 speed 250cc enfield from the sixties?

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Re: 5 speed gearbox?

JOHN MEAD
Yes, the 250cc Continental GT.  However, their gearboxes were fragile.

John Mead

--- On Fri, 10/12/12, John <[hidden email]> wrote:

> From: John <[hidden email]>
> Subject: [Enfield] 5 speed gearbox?
> To: [hidden email]
> Date: Friday, October 12, 2012, 2:27 PM
> anyone heard of a 5 speed 250cc
> enfield from the sixties?
>
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Re: 5 speed gearbox?

Graham Scarth
In reply to this post by John Halford
The 5 speed gearbox was introduced on the 250cc Crusader Super 5 in November 1961, the engine numbers of these machines having an SF prefix.

The Crusader Sports subsequently was available with the 5 speed gearbox as an option from mid 1962 on, but not many were built. The standard 4 speed Sports has engines with an S prefix up to to 1960 and SR from then on.
Any Sports engines fitted with the 5 speed gearbox were prefixed SRF.

The Continental was introduced in October 1962 and was also 5 speed with engine numbers prefixed CL.

The final 250cc model, the Continental GT, appeared in January 1965 with the 5 speed box, engines prefixed GT.

There were some 5 speed 250 Trials models built using Super 5 crankcases, so they do not have their own prefix.

The gearbox has a bad reputation for selecting false neutrals, and wore out rather quickly, resulting in jumping out of (usually) the intermediate gears. The only reasonably reliable cure is to fit the 4 speed gearbox internals!!!

Graham Scarth
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Re: Re: 5 speed gearbox?

John Halford
Thanks for everyones help with this.

--- On Fri, 12/10/12, Graham Scarth <[hidden email]> wrote:


From: Graham Scarth <[hidden email]>
Subject: [Enfield] Re: 5 speed gearbox?
To: [hidden email]
Date: Friday, 12 October, 2012, 23:06



 





The 5 speed gearbox was introduced on the 250cc Crusader Super 5 in November 1961, the engine numbers of these machines having an SF prefix.
 

The Crusader Sports subsequently was available with the 5 speed gearbox as an option from mid 1962 on, but not many were built. The standard 4 speed Sports has engines with an S prefix up to to 1960 and SR from then on.
Any Sports engines fitted with the 5 speed gearbox were prefixed SRF.
 
The Continental was introduced in October 1962 and was also 5 speed with engine numbers prefixed CL.
 
The final 250cc model, the Continental GT, appeared in January 1965 with the 5 speed box, engines prefixed GT.
 
There were some 5 speed 250 Trials models built using Super 5 crankcases, so they do not have their own prefix.
 
The gearbox has a bad reputation for selecting false neutrals, and wore out rather quickly, resulting in jumping out of (usually) the intermediate gears. The only reasonably reliable cure is to fit the 4 speed gearbox internals!!!
 
Graham Scarth




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