glawsder

Agree with a front hub, less hassle- I have just fitted a yose front hub to a trike for under £300, with the following points to note. Your bottom bracket probably won't take the cassette PAS, and a 2 piece PAS unit will be required. The threads and nuts on the new front wheel where wider than the original, you should check it can fit the Raleigh before buying. The frame was OK for mine, but I had to 'adjust' the mudguard and front basket fittings. The biggest issue will be fitting the PAS unit, ensuring there is enough space for the disk on the crank so it spins and getting the spacing for the sensor to read it (there wasn't on the trike and I ended up taking a Dremel to the disk and glueing it to the pedal).

When I tried to fit the KTV12L to my wife's trike it was apparent there was not enough room on the left hand side, and the 'old fashioned' bottom bracket had no spline holes to catch the sensor housing. In any case the sensor and housing was way too wide, to fit between the pedal and the frame. I went back to yose and they sold me a 2 piece sensor (you can get them a lot cheaper on ebay), but even then it needed a dremmel to make the disk thin enough, hot melt glue to fix it to the pedal and a 3mm shim between the sensor and its supporting bracket, but now works a treat. If it starts causing problems, then I may swap it to the RHS and glue the disk to the chain ring. The centre grip on the sensors is quite flimsy and if the disk sticks for any reason, the rotating crank wears the centre down and it doesn't work anymore, hence the hot melt glue. I suspect that if you have space on the crank, and a bottom bracket that fits the sensor, it is a good solution, otherwise my advice would be to forget the v12L and just get a 2 piece sensor.