BSA Owners' Club Forum

The BSA Workshop => Twins => Topic started by: Boneidle on 13 October, 2017, 17:25:11

Title: A65 Fitting a oil pressure gauge
Post by: Boneidle on 13 October, 2017, 17:25:11
Hi. I have a 1972 Thunderbolt. This engine has the oil pressure switch fitted. Does anyone know where i can buy parts to fit a Oil pressure Gauge, in place of the OPS. SRM sell Gauge's but no fitting's. Any advice on how to proceed are welcome. I would prefer to buy a ready made kit but I cant find anything outside of the USA.
Thanks
Title: Re: A65 Fitting a oil pressure gauge
Post by: Caulky on 14 October, 2017, 10:35:19
I bought all of the parts required from here:
http://www.vehicle-wiring-products.eu/product.php/210/oil-pressure-gauge-capillary-type

They also supply a capillary extension kit and T-piece.
Send for their catalogue.
Title: Re: A65 Fitting a oil pressure gauge
Post by: Boneidle on 14 October, 2017, 11:45:58
I will send for a catalogue. Not sure what the T piece is for? adding something extra I presume,
Thanks for the info. 
Title: Re: A65 Fitting a oil pressure gauge
Post by: Caulky on 14 October, 2017, 12:32:31
I use one of the T-piece outlets for a connection to the capilliary tube, the other for the oil pressure switch.
Title: Re: A65 Fitting a oil pressure gauge
Post by: Boneidle on 14 October, 2017, 13:03:08
Thanks for that. I will do the same.
Title: Re: A65 Fitting a oil pressure gauge
Post by: JulianS on 15 October, 2017, 10:00:46
Should you intend to use the pressure gauge as an instrument whilst bike being ridden rather than as a workshop diagnostic tool you may wish to consider how to isolate the copper capillary from engine vibration and possible fracture.

A fractured pipe, which is situated between the pump and the crankshaft, would likely lead to a catastrophic engine lubrication failure.

Service sheet below from BSA gives a pressure figure.
Title: Re: A65 Fitting a oil pressure gauge
Post by: Caulky on 15 October, 2017, 10:51:23
Put a loop on the capilliary pipe so that there's no tension on it.
Vibration is the enemy.
Title: Re: A65 Fitting a oil pressure gauge
Post by: Boneidle on 18 October, 2017, 10:46:45
The oil gauge would be a permanent fitting. Thanks for the vibration warning
Title: Re: A65 Fitting a oil pressure gauge
Post by: JulianS on 18 October, 2017, 11:03:32
My copy of the Vehicle Wiring Products catalogue, admittedly several years old, lists the gauge as not suitable for motorcycles. I would suggest checking with them before fitting.

Have you seen this Morgo item? Comes with flexible connection rather than metal tube but I dont know how it connects. I have found Morgo to be helpful if phoned.

http://www.morgo.co.uk/morgo-oil-pressure-gauge/57-morgo-universal-oil-pressure-gauge.html
Title: Re: A65 Fitting a oil pressure gauge
Post by: Bess on 20 October, 2017, 17:40:23
Hi,
     A few photos of mine, I used plastic pipe such as this

https://www.carbuildersolutions.com/de/oil-pressure-gauge-tube-18-npt-female-end-and-18-bsp-female-with-male-cone-end

The gauge is glycerine filled to reduce vibration fatigue. A folded stainless plate fitted and secured under the clocks.

Best wishes...
Title: Re: A65 Fitting a oil pressure gauge
Post by: Boneidle on 22 October, 2017, 12:00:17
Hi.   Caulky. JulianS. & Bess. (Your Gauge set up look's good.) For all the Information & links provided. I have enough knowledge now to proceed. I really appreciate everything posted.
Thank's to you all.
Title: Re: A65 Fitting a oil pressure gauge
Post by: Bess on 22 October, 2017, 20:02:33
Hi Boneidle,
                  You're most welcome, good luck.......Bess...