Flat bottom tank rubber - normally fitted to the bottom of oil tanks - or occasionally Manx bolthru tanks.  The same as petrol tank rubber Item - 0129, but with a fractionally smaller Internal diameter, more suited to 5/16" bolts.  See listing for more detail. 

Price is per each

Similar in appearance to the petrol tank rubber doughnuts (Item 0129), these oil tank rubbers have slightly different inner diameters - these being closer to 5/16" diameter, and were normally fitted to the bottom of oil tanks where a 5/16" shouldered bolt is used (while our petrol tank version of the same rubber - Item 0129 is more suited to the normal 3/8" diameter shouldered petrol bolt.

These were also used on Manx petrol tanks and oil tanks using 5/16" thru rods - and like Item 0129, they fit snugly in the dished washers we also sell in the same section.

Note: the difference between these and our Item 0129 is actually quite minimal . . . but we ended up making both types.  If one is out of stock, the other can also be interchanged with no issue.

Just like Item 0129, these are manufactured for us by a specialist rubber manufacturer and are patterned on original Norton items from high quality oil resistent nitrile rubber

This is the Large pan Washer used between the top rubber and the petrol tank on Norton Internationals and Norton pushrod/Sidevalve models. Four Fitted per petrol tank.

Price is per each

This item is listed in the 1948 Norton Spare Parts List, and is shown fitted to both International and other OHV/SV models, as being fitted between the petrol tank and the lipped washer (our Item 0128, as shown in the photo).

The washer is certainly very useful for ensuring the rubber does not 'mush out' against the base of the petrol tank . . . but I have found on some petrol tank fittings it is difficult to insert this washer because adding this meant it was difficult for the special Norton petrol tank bolt (our Item 0124 - which are always a standard size) to reach the thread under the petrol tank.  Therefore I would question if this washer was fitted to all single cylinder petrol tanks - and certainly it is very common to find it has been omitted.  I notice that some petrol tank threads seem flush with the mount, and some are slightly recessed - I can only suggest you try . . . and if you can fit them, and the rubbers do not look over compressed - then it is a good idea to use them.

This is the distinctive Top Hat shaped rubber used on the top of Manx and Racing International Bolt-thru petrol tanks - Its head is the correct diameter to fit within the dished washer (A2/277 - our Item 0123). Four required per petrol tank - Price is per each.

Price is each

Norton introduced the 'Bolt Thru' style of Manx Norton petrol tank for the postwar racing models (i.e. 46-47), as well as some Clubmans tanks, although they may have experimented with them just pre-War as well, and Works bike used this method of securing the tank.  The petrol tanks had tubes running all the way vertically through them, and then recesses at the top to hold 4 of these smaller Top Hat rubbers and holes under the tank to push in four of the larger Top Hat type rubbers (our Item 0132).

Through the centre then ran 5/16" steel rods - threaded at both ends, and with chamfered ends, with acorn nuts at the top (our Item 0125) and two 5/16" nuts under the frame tank supports which could be adjusted until the right tension was obtained, then locked together.

Lipped washers (our Item 0123) are then used both at the top of the tank (they slide over the smaller Top Hat rubbers) and underneath the tank bracket to support the whole assembly.  

We have had the moulds made for these bottom rubbers, copied from original Norton items and they are made for us by a specialist rubber manufacturer from high quality oil resistent nitrile rubber of just the right density.

As well as fitting in the tanks nicely - our stainless steel lipped washers fit over these washers lovely, and when used in conjunction with our stainless steel acorn nuts - they really look the business, and finish off any Manx Norton petrol tank restoration.  In the photo is a picture of these fitted to one of my own original Manx Norton bolt thru tanks - in this case a scolloped/soldered Manx tank, fitted to my 1938 Big Plunger Manx.

1950 Manx Norton alloy oil tank and Beart Oil tanks:  This same (smaller) top hat rubber was also used on the alloy wrapround oil tank fitted to Manx Norton's in 1949-50.  The assembly and fitting was similar to the Manx petrol tank - except this small type top hat rubber was used both top and bottom, therefore 4 rubbers were used in total.  Although not shown in the photos, I have one of those oil tanks and it still has the perished remains of this type of rubber in situ!  Additionally - Francis Beart also offered an alloy oil tank in very small numbers (see photograph of the one I have fitted to my 1938 Manx), and these rubbers also fit that tank, as per the 1950 Norton version.

This is the Top hat shaped rubber used on the bottom of Manx and Racing International Bolt-thru petrol tanks - With a larger diameter head than A11M/840 (Item 0131), It fits at the bottom of the tank and locates in the recess on the alloy Manx brackets used on Plunger Manx frames.

Price is each

Norton introduced the 'Bolt Thru' style of Manx Norton petrol tank for the postwar racing models (i.e. 46-47), as well as some Clubmans tanks, although they may have experimented with them just pre-War as well, and Works bike used this method of securing the tank.  The petrol tanks had tubes running all the way vertically through them, and then recesses at the top to hold 4 smaller Top Hat rubbers (our Item 0131) and holes under the tank to push in four of these larger Top Hat type rubbers.

Through the centre then ran 5/16" steel rods - threaded at both ends, and with chamfered ends, with acorn nuts at the top (our Item 0125) and two 5/16" nuts under the frame tank supports which could be adjusted until the right tension was obtained, then locked together.

Lipped washers (our Item 0123) are then used both at the top of the tank (they slide over the smaller Top Hat rubbers) and underneath the tank bracket to support the whole assembly.  

We have had the moulds made for these bottom rubbers, copied from original Norton items and they are made for us by a specialist rubber manufacturer from high quality oil resistent nitrile rubber of just the right density.

Fitting Notes:  These bottom rubbers have a nice wide bottom area that sits nicely on the recess of the Manx Norton frame tank brackets (alloy in the case of the front bracket).  However, if you wish to raise the height of your petrol tank slightly (as sometimes there are clearance issues it is also possible to fit a normal road type 'lipped' washer (Our Item 0128) in the recess of the frame tank support, with the large Top Hat Rubbers then sat on them . 

Final point - some observant people will notice that the 1948 Norton Spare Parts list shows that the lowest rubber - that fits under the tank support is lipped, but small enough to fit into the 0128 lipped washer.  Sorry - we do not sell these small lipped type - and have found that the normal washer (Item 0129) is satisfactory (as ours is of the correct size and density) - and its only purpose was to keep the centre rod centralised and avoiding it touching the tank bracket.  Therefore, if using an extra lipped washer, this will occur anyway - and if not - it is a simple task to take a piece of fuel line and cuts it to approx 5mm length and feed it into the recess in the tank bracket to achieve the same purpose - if this makes sense!

Shown in the photo are two genuine Manx petrol tanks - a steel scolloped/soldered tank (the first bolt-thru type offered, and the later alloy petrol tank - fitted in 1949/50.  There was also an interim type - similar to the scolloped type, but of welded construction, in approximately 1948-49.  All three types use the rubbers shown here.

These petrol tank kneepads, with the Norton logo embossed in them are of the type fitted to Norton International's through the 1930's and into the early 1950's. This was also the type fitted to most SV and OHV model petrol tanks through the 1930's and until approximately 1953, when a slightly more bulbous tank was introduced on the ES2, which I also sell - Item Number 0419.. I am also able to supply the chromed screws that secure them to the petrol tank.

Note: these are sourced from a UK company, not the Indian version often seen on Ebay, I have compared both side by side and found these to be a much better reproduction - hence price slightly higher than some seen on Ebay

These CNC manufactured stainless steel screws are identical to the original Norton items, except we CNC manufacture them in stainless to the original Norton pattern. These are to fit the Norton kneepad type shown in the picture - but this is for tanks with 5/16" BSC thread holes.  

Price is per pair of screws

As can be seen from the accompanyning photographs - an original Norton screw (dull plated steel, just starting to rust on its head!) from one of my Norton pie crust SOHC International petrol tanks was used as the pattern for us to CNC manufacture these screws - identical in profile to the original Norton items, except made in stainless steel, and very pretty so they will not rust.

The screwdriver slot is milled and is made with original BSC thread, so they should be a direct replacement item for your originals if (like most are) they are now looking a bit grotty.  This type of screw was used on many types of petrol tanks that used the 'Norton' type kneepads shown in the picture (fitted to all Norton models from early 1930's to mid 1950's), but particularly SOHC petrol tanks.

However, many tanks - particularly OHV and SV tanks fromt th 1930's to 1950's were fitted with similar shaped screw - but employing a smaller 1/4" BSC thread - therefore please check your petrol tank before ordering.  If you require the smaller (1/4") diameter thread for your tank - then we can also supply these, see Item 1203

Price is per pair of screws

These CNC manufactured stainless steel screws are identical to the original Norton items, except we CNC manufacture them in stainless to the original Norton pattern (Note read below and also see Item 0478 before deciding which screws are right for your tank and ordering).

This type have 1/4" BSC Thread, most commonly fitted to OHV/SV models - and as you can see in the photographg, a pair of these screws are fitted to a standard roadgoing tank of the 1930's to the early 1950's.  

This particular tank is actually a late 1940's 16H SV petrol tank (it does not have the cutout underneath which the visiually identical OHV tank of the same period had) - but most Norton petrol tnaks ot this stile were fitted with 1/4" BSC threads for the kneepads (and those shown are original Norton kneepads - but we also offer replica's of those - Item 0394).

Please Note that we also sell a second kneepad fixing screw which is of an indentical style - but which uses a larger 5/16" BSC thread (Iten0478).  It is difficult to be sure which Norton models for which years used which screw type - so please check your own petrol tank kneepad threads before ordering - as I believe some OHV/SV may have been fitted with the larger 5/16" thread holes, and likewise - some SOHC tanks may have been fitted with this smaller 1/4" BSC thread.

Up to 1953 all models used the type of rubber kneepad shown here though, and the kneepad screws are of identical profile - other than the thread diameter.

The profile for these screws is taken from an original Norton kneepad screw - but we CNC manufacture these screws in stainless steel - with a milled screwdriver slot. Original screws were dull nickel plated, and as they were recessed in the kneepad rubber, nearly always rusted and looked grubby - fitting these stainless steel screws look correct, but will improve the appearance of the petrol tank and will not rust in the future.

Price is per pair of screws.  

These are the petrol tank kneepads fitted to swingarm models of mid to late 1950s (but not Featherbed), and also later plunger framed models.

These petrol tank kneepads, as far as I can remember were not never fitted to Norton International's, but were fitted to the slightly more bulbous OHV (ES2, Model 19 etc) petrol tank that came in approximately 1953. They may also have been fitted to the earlier Dominator tanks (not sure on that one?). They were not the type fitted to Featherbed frames though.

Picture of my old 1955 Norton ES2 is included, so you can see the petrol tank these were fitted to. We also manufacture the tank screws to the original pattern.

This is a slightly longer version of our black Sorbo (hard foam\rubber like material) petrol tank chinpad (Item 0127c)- which may be more suitable than our normal length (Norton) tank pad, if you have a competition bike with a long tank, or just want to give your classic bike a more 'Brooklands' look.  See item listing for more detail.

When making up our last batch of normal Norton racing tank sorbo pads (which are meant for those petrol tanks that have chinpad tabs to retain the sorbo) - we decided to make a smaller of batch of longer pads - see item photos.  We thought these may be useful for anyone contemplating a 1930's 'Brooklands' style racing bike, or even a 1960's faired race bike with long type tank - but these are slightly longer than our 0127c type - having length and width dimensions of: (nominal) 9.75" x 4.25" and are from our normal high quality 30mm (just over 1") thick sorbo foam.

Just like all our chinpads - these are linished to clean up the cut sides and radius each corner.

While our Item 0127c chinpad sorbo's are cut to a length to be the ideal fitment for Norton M30 and pre-featherbed Manx type petrol tanks, which have clips for chinpad tabs - these longer 0990 versions are more suited to a long tank where you choose your own way of affixing - i.e. two sided sticky tape, contact adhesive or whatever.  However, to give an indication of what they would look like on a real tank - one of the photographs here shows one of these longer sorbo pads loose fitted to the top of an original (roadgoing) 1937 Norton International petrol tank - the standard International tank as shown here is slightly slimmer than a pre-war Manx tank and does not have chinpad tabs

This is a short black Sorbo (hard foam\rubber like material) petrol tank chinpad, this type being shorter than our other sorbo pads - but similar to the type fitted to many 1950's-70's classic racing bikes (including many Japanese 2-stroke racers), that often had a small indent in the petrol tank suitable for a small chinpad. 

These are shorter than our 0127c type - having length and width dimensions of: (nominal) 5.5" x 4.25" and are from our normal high quality 30mm (just over 1") thick sorbo foam.

Just like all our chinpads - these are linished to clean up the cut sides and radius each corner.

As these pads have been very popular over the years, we thought we would make a small batch of these shorter type for those Classic race bikes which just need a short chinpad (to help the rider get their head under the fairing), for bikes Like Yamaha Tz's or Honda twins etc.