But is that what Amal sell today?The original screws are Posidriv.
www.classicbritishspares.com
www.triumph-spares.co.uk
Ah well there you go then. Useful for originality I guess.I can't see any reason why not.
Amal Concentric Float Bowl / Top Cap Screw (1) - 622/086
New Amal Concentric Float Bowl Mixing Chamber & Top Cap Screw. Included are (1) screw made by Amal. Replaces O.E.M. part number 622/086 and 99-0521. Screws will fasten your float bowl and/or top cap. Fits all Amal MKI Concentric carburetors that include all 600 & 900 series as fitted to many...Amal 2BA Screw for Float and Mixing Chamber
Amal 2BA Screw for Float and Mixing Chamber
Better bellmouth on this one but missing the monobloc drain plug. This carbs set up for petrol.Ah well there you go then. Useful for originality I guess.
This is a photo of how I would set up concentrics for reliability when racing. This is one of a 32 mm carb pair for a 500 Dommie. In this case set up for methanol. A poor bellmouth but you can see the Allen screws holding the bowl plus the monobloc drain plug. Set up like this the carbs do not fall apart up to around 7500 rpm (one piece crank). Rear wheel hp around 55 bhp.
I just don't like those screws. They fall out when you use the bike hard.
I believe posidrive drivers can also be used on Philips screw heads...but a Philips drive should be used on a Posidrive scew head.Ah well there you go then. Useful for originality I guess.
This is a photo of how I would set up concentrics for reliability when racing. This is one of a 32 mm carb pair for a 500 Dommie. In this case set up for methanol. A poor bellmouth but you can see the Allen screws holding the bowl plus the monobloc drain plug. Set up like this the carbs do not fall apart up to around 7500 rpm (one piece crank). Rear wheel hp around 55 bhp.
I just don't like those screws. They fall out when you use the bike hard.
www.bolts.co.uk
