100525 DiGi-Hat DCC Conversion Brush Isolation For Old Graham Farish
- Temporarily Out of stock
100525 DiGi-Hat DCC Conversion Brush Isolation For Old Graham Farish (Pk 1 With Two Insulators.)
The Digi Hat from DCC Supplies is used to convert Graham-Farish chassis safely to DCC in minutes!
Supplied with Kynar® heat shrink tube. Tougher than standard tubing, and half the thickness!
Q. So, the spring is a fuse?
A. No. The spring is made from 0.32mm (28awg) Beryllium copper wire, which has a capacity of 1.4 amps. Or, put another way, most 'N' gauge decoders provide 0.8 -1 amps. The current draw of an average Farish motor is 0.3 - 0.4 Amps.
Q. OK then, will heat draw the temper of the spring?
A. No. Beryllium copper is tempered at 460° C for an hour. With a loading of 1 amp the temperature increase of the spring is negligible. (see below)
Q. Does the spring get hot?
A. No. At 1amp heat generation is 0.003 W/second (per 1000m of wire!), heat dissipation is 105 W/m*k, again, well within tolerances!
Q. Will the DiGi-Hat™ melt?
A. No. The material has a melting point of 140°C.
Q. Is it true the DiGi-Hat™ absorbs water, expands, and splits?
A. No! The material used (a copolymer of Polyoxymethylene) is designed for use as a bushing material, and is specified at less than 0.5% absorption at 100% immersion. (measured by ISO 62-Sat/23C) - and after all, we're not discussing submarines here!
Q. What makes this the best solution?
A. DiGi-Hat™ is a designed and engineered solution. It uses high quality materials chosen specifically for the task, and engineered by a specialist company with over 35 years of experience, under compliance with BS EN ISO 9001 : 2000