Oil pressure sensorUp to Commando
Oil pressure sensorPosted by Andrew Heathwood at April 09. 2017
I've recently fitted one of these oil pressure sensors to my 1972 Roadster and thought I'd share the information:
It fits to the rocker feed oil supply on the timing side using a double banjo bolt. I used copper washers (2x 3/8in, 1x 5/16" ID) in preference to the Dowty seals provided as I found they fitted better. The wiring is a simple switch on the earth side and I had the indicator warning light (centre one) in the headlamp available to use.
The switch is available for $30 from Don Pender. http://www.tritonmotorcycleparts.com/297620484 although not listed yet on his website but just email him at the address shown on the website. I paid via Paypal and the switch arrived within 2 weeks. The sensor will also work with the combined Charge/Oil Pressure Warning light from http://www.improvingclassicmotorcycles.com/products.htm if you do not have a warning light spare.
It's a bit 'snug' between the engine and gearbox but fits fine:
This is a basic sensor but could help indicate a major failure of oil pressure, e.g. anti-wet sump valve failure or forgetting a manual switch. The warning light goes out after running the bike for around 5 seconds in normal use. Not standard for a Norton I know but it could help avoid a 'Not a good day' event http://www.nortonownersclub.org/noc-chat/technical4-commando-forum/759661646?b_start=0#85312273
Re: Oil pressure sensorPosted by richard_mills at April 09. 2017
Where in UK can you buy a 'double banjo bolt'?
Re: Oil pressure sensorPosted by Andrew Heathwood at April 09. 2017
Venhill do them. There may be other suppliers.
Re: Oil pressure sensorPosted by paul_nicholls at April 12. 2017
I've seen a similar set up with a thicker aluminium rocker spindle plate tapped to take an oil pressure switch.