Pilot Needle to fit Original Amal TT and RN Carbs - Early (Short Knurl) Pre-War to 1951 Type (Each)

Product no.: 1115 2967

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can be shipped within 15 days

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High quality early type (i.e. pre-War and pre 1951'ish) Pilot Needle to fit original Amal TT and RN carburettors.  These tapered needles control the slow running and are often worn on originals. 

This is the rare to find early design which was fitted up until approximately 1951, it having a distincvitve design with a shorter knurl than the later type. As far as we are aware - this type of needle have not been available since they were last manufactured by Amal in the early 1950's, and virtually every original example I have seen looks very worn and tired - normally with the original knurl chewed and the needle point worn or bent.

Price is Each

These Pilot Needles were fitted to all Amal TT and RN competition carburettors, to adjust slow running.  They have a stepped, tapered needle that should close fully the small pilot hole in the body of the carubrettor needle, when fully screwed clockwise.  Original needles most often have some form of wear to the taper of the needle, and as this type of carburettor is already difficult to adjust to run cleanly at low throttle settings - a worn needle will easily compound those issues.

We manufacture these needles to the original design, and an original early type Amal TT needle was used as the template (the needle length is different to the later Long Knurl design (that we also offer - see Item 0154).  The main knurled body has the same dimensions as the original, and most importantly - the needle length protrudes into the carb the same as the original needle.

The body type on this pilot needle is CNC manufactured from brass, as per the original Amal items, then Satin Nickel plated.  It has a fine knurl, and a distinctive stepped shape that makes it easily identifiable from the later design.  If you are restoring an early competition model or SOHC Norton, then fitting this type of Pilot Needle gives that extra level of authenticity.  I am not exactly sure the date that the design was changed to the later type - but believe it was approximately 1951 - All TT or RN carbs before that time would have been fitted with this type of Pilot Needle.  Factory pictures of the Amal TT with larger type 302 Floatchamber still showed this needle type fitted - meaning it could have been used later than 1951

Note, we also offer the later 'Long Knurl' type TT/RN Pilot Needle - Item 0154 as well as the longer needle type to fit later Amal GP carburettors - item 0293.

these pilot adjusters control the slow running, and the needle often wears on originals, that can affect the adjustment available - fitting a new needle will help resolve this.  Note - we also offer the brass pilot housing that screws into the carb body as well as both springs fitted to this adjuster - the internal coil spring as well as the external leaf spring - Items 0155, 0156 and 0157 respectively, all UK manufactured.

Pilot Needle Assembly With Springs:  It is rare to find an origina Amal TT or RN carburettor these days that is still fitted with the correct and full Pilot Needle Assembly.  Originally the design consisteed of a brass threaded piece that screwed into the carb body, which had a special black stained spring clip mounted behind it.  The purpose of this spring clip was to act against the knurl of the Pilot Needle (both the early short type and the later long knurl type), and stop it rotating once set.  Often these seemed to have been removed (they can sometimes make adjustement more fiddly - but are required!), or got rusty and broke.  We can also supply these - Our Item 0157. 

However, the original Pilot Needle assembly was also designed to have a small coil spring fitted inside the brass threaded piece, which fitted around the shaft of the Pilot Needle, and helped apply some positive pressure to the needle when adjusting it.  These are frequuently lost or omitted on TT and RN carbs today.  Again we supply this spring - Our Item 0156.  Both springs are copied directly from original examples.

Early Amal TT (and Amac??) Needles? - Very early Amal TT carbs (i.e. pre-1930) have lots of minor diffences to the later carbs.  I cannot be sure as I no longer own an early carb (I let a TT27 Norton carb go years ago and have regretted it since!) . . . but I think the pilot needle may have been slightly shorter than the 'standard' TT/RN pilot needle.  If you have an early carb and would like to check, please email us at sales@racingvincent.co.uk, as I have a few pilot needles made with a fractionally shorter needle. 

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