Tfs

[ian640]

A pic of my recently restored TFS. I can't take much credit for it, as most of that goes to Paul Powell (http://www.cottonvilliersspares.co.uk) who I would strongly recommend. More to come about the machine, maybe in Leading Link Tomorrow we're going to Belgium to compete in the Mons classic trial.

[Colin Sparrow]

Very nice and very shiny. Never mind, soon get some Belgian mud on it!

I'm currently doing a TFS and I've put banana forks on it. I wonder how they'd compare with your teles.

[ian640]

Well I'll have to stop looking at it and get it dirty at some point

I'll post a report on the event somewhere.

[Phil Hyde]

Very smart Ian. Ally guards transform the looks. One observation on the seat. A bit too high, unless you have long legs. Good luck in Belgium.

[ian640]

I wondered how long it would take before I got the first 'observation'.

[Phil Hyde]

Seat height

Based on riding my TFS in over 300 trials.......

[ian640]

I see. The seat may be addressed in the next phase. I wonder why they were mounted like that in the first place?

[Phil Hyde]

TFS Evolution

The TFS rear sub frame was a direct carryover from the 1964 TES. A lot more road miles in those days and a need for what passed for a seat.

Fitting longer units to allow the suspension to work more efficiently brought about the need to lower the seat height. I cut the bracket down to make a pair of mounting point for my simple sheet ally seat covered in closed cell rubber. A reduction of about 65mm in seat height compared to standard.

[dave higgins]

Good bit of info phil, helps others to be aware of the pitfalls & is cheaper than trial & error......

[Phil Hyde]

Cheers Dave

Yes, lots of information available still to come.

[Brian Thompson]

Experience.....

Likewise Phil, great info.

I had never heard of that one before, interestin' stuff.

Brian.

[Colin Sparrow]

I see. The seat may be addressed in the next phase. I wonder why they were mounted like that in the first place?

I guess I have the same issue with the seat. I don't really want to start altering the rear sub frame, so I may just have to live with it. Is that a Wassel seat Ian?

[Phil Hyde]

Seat Dilemma

Colin

Sawing the seat bracket down is a bit of a radical step. I have kept the section that I removed which could be welded back on if I ever needed to return to stock/factory.

My approach has been one of development. I still have lots of ideas, the next of which will be a hydraulic clutch. No doubt a few purists will wince engineering is king.

Keeping your seat standard should have no affect on the rideability. The TFS is in my opinion the best trials Greeves.

Phil

[floydbassman]

The hydraulic clutch conversion appeals to me being a TFS owner. On the Greeves website, the Pathfinder model advertised (based on the Anglian /Wessex models) says it has a hydraulic clutch. Could be relatively straighforward, the part to find being a slave cylinder from the many different models of modern trials bike and making an adapter to interface with the Villiers gearbox. With that in mind I am going to examine the clutch slave setup on my 125 Gasgas for starters. I wonder what Richard Deal used on the Pathfinder.....

[ian640]

The TFS rear sub frame was a direct carryover from the 1964 TES. A lot more road miles in those days and a need for what passed for a seat.

Fitting longer units to allow the suspension to work more efficiently brought about the need to lower the seat height. I cut the bracket down to make a pair of mounting point for my simple sheet ally seat covered in closed cell rubber. A reduction of about 65mm in seat height compared to standard.

Thanks Phil. My apologies if I came across a little tetchy.

I will probably retain the stock set-up as it's likely that the machine will be used in road trials/LDTs. The seat didn't seem to cause me much of a problem at the weekend and sitting down between sections the riding position was quite comfortable.