6mm thick, 100% Wool Black Felt sheet - 180mm x 80mm size. This is a non-standard thickness felt that we have to make using two 3mm felt patch's together. Price is per patch
For some applications I have found it very useful to make washers from really thick felt - but have never been able to find pure wool felt of this 6mm thickness. Therefore,, in the past I have produced washers of this thickness by gluing two pieces of 3mm felt together using a contact adhehsive. This works really well and although difficult and time consuming to make - results in a strong felt washer. These patchs are made in this way - they start off as two layers of 80mm x 100mm 3m felt (i.e. Item 0836), both of which are then lightly covered one side with industrial 528 contact adhesive. When dry they are both joined together to give a good 6mm felt material
I use this thickness of material when wanting to make felt seals for areas susceptible to dirt and debris getting in - two obvious areas being Steering head bearing areas (where often there is a slight gap between upper and lower races) or to protect the gap at the end of swinging arms - where road debris can get in - however I am sure there are other areas as well. In the accompanying photos you will see my Douglas 2 3/4hp project build, where I have assembled the fork steering head bearings with felt seals made from the same 6mm material as listed here.
Sorry these patch's are not cheap, but not easy to make and time consuming.
Felt Seals - Background
Felt seals are rarely seen in the modern world of motorcycles - but they were very commonly fitted on older motorcycles - not just on bearings, but any area where there may be a likelyhood of oil seeping out, this felt helping to stop constant drips on the floor, or dirt getting into bearing areas. It also has the advantage of being able to be cleaned or washed out with degreasant rather than throwing away.
We do sell a few purpose made felt washers - but due to the cost of having custom made washer cutteres made - it is often more economical for a restorer to buy a sheet of wool felt and cut them to size when needed - this material is ideal for this. In the accompanying photos I show how I normally cut them. First of all I use a suitable marker pen and find it easiest for round washer seals to just keep a variety of washers and coins of various thicknesses. I then draw around the circumference of an appropriately sized washer to mark out the shape. I then use good quality heavy duty scissors - I have found those like in the photograph best, I think these are the type used by clothing makers. Just work slowly and carefully and keep the felt as close to the pivot point of the blades to give the sharpest cut. To cut the centre out, I first fold the washer in half, and make a nick that the sharp scissor blade can fit through - then I start in the middle and work slowly out in a spiral fashion. Finally, I trim the outer circumference of the washer to make it as round as possible - I find turning it over makes it easier to remove any pointy bits and ensures a nice round profile.
I think using this good quality black felt adds an original touch to restorations - so always keep a variety of thicknesses for this purpose.
All our felts are high quality 100% Wool from a reputable UK source. I use the same felt for my own restorations. Email on our sales email if you require other lengths or thicknesses (or colours!), we may be able to provide them. They are individually packed in sealable bags to keep the material clean until ready to use
With these 6mm patch's I take great care to ensure they are kept clean in the process of gluing, but inevitably there may occasionally be a smudge of glue around the edges - but this does not detract in any way from the main felt area, or purpose - otherwise I would reject them