Having done a bit of research it seems that conductive polymer pots are the
answer. After a lot of searching I have found some "precision" conductive
polymer pots available in the UK that are rated for 10million cycles.
One in particular seems pretty much ideal but for two things.....
The highest resistance the pot is available in is 50k ....... I know that
the original TM pot was 250k and a lot of wheel pots are 100k so I
wonder....
<<>>Will a 50k pot work at all?
<<>>Are there any disadvantages in using a lower resistance?
<<>>The shaft of the pot is metal rather than plastic .... has anyone had a
problem fitting replacement pots with metal shafts to their TM F1/nas pro ?
I know to make sure the new pots are linear, that they have the right shaft
size and have a large enough rotation angle, but are there any others things
I need to be aware of (such as power rating)?
The pots themselves cost 9.50 each ... plus another 5 for delivery so I'm
really keen to make sure I get the right ones first time!!
I have included the spec of the pots at the end of this posting
If anyone can give me advice about replacement pots or tell me whether the
ones I have chosen are ok ... I'll be very grateful :)
I also have one other related question...
A previous post to this NG said that the pedal pots in the TM F1/nas pro are
different to the steering pot. From memory they said that they are 100k but
most significantly only have a 30degree angle of rotation. This is because
the design of the pedals mean the pot is only turned 25degrees or so from
zero throttle to full throttle.
<<>>Would the 360degree 50k pots I have picked out for the steering be
suitable to use to replace these pedal pots, or would I be better off with
something different?
Hopefully once I sort out these pots I'll gain another 12months use from my
much loved, very well used but very fragile wheel :)
thanks in advance :)
Marc
Single Turn Precision Potentiometer 22mm 1W
Precision potentiometers are intended to be used as 3 terminal potential
dividers. Use as a 2 terminal variable resistor is not recommended.
Spectrol
Precision single turn bush potentiometer
Conductive plastic element
Stainless steel end slotted shaft
Compact plastic housing
Supplied with metal lockwasher and nut
technical specification
Resistance tolerance 20%
Temperature coefficient 600ppm/C (max.)
Linearity tolerance 2% independent
Electrical rotation 340 3
Mechanical rotation 360 continuous
Running torque 368m Nm
Shaft ?6.35 L12.7
Mounting bush ?9.5 L9.5
Rotational life 10 million cycles
Operating temperature -55C to +125C
Dimensions body: ?22.22 L. 9.26
Shaft ? 6.35 L.22.22 (metal)
Mounting bush ? 9.5 L. 8.77
*Meaurement Includes bush