16 replies to this topic

[Deejayry]

Have any of you here installed a stack speedo or dash display on your mini? If so could you tell me about how you went about installing the wheel speed sensor?
I have been thinking about buying a stack dash display for a while and my only concern is how to mount the speed sensor.

Thanks.

[phil hill]

I ended up using a speedo drive sensor from these guys : http://sailesmarketi...x4h-transducer/

 

It's a speedo sensor from a London Taxi but I asked them to replace the spade drive for a square drive so it would fit the mini gearbox.  From memory it was about £35 with next day delivery, the flex is two metres long (three core mains flex actually, but easy enough to wire up to the Stack).  

 

Unfortunately I don't have the email contact any more as I've changed company and therefore lost my email history, but it was simple enough when I got to speak to an actual person.  Nice easy solution too : no magnets, no glue, no brackets...........  

 

I'm sure there are other companies who offer this kind of sensor now, maybe one of the companies supplying electronic speedo's or Rally type trip meters ??

 

Sensor : 

 

Mounted on Gearbox :

 

 

In-car : 

 

 

Phil.

[summs116]

I ran a sensor on the rear back plate and quicksteel the magnet on the rear hub.

[The Matt]

I did the same as the above, but that sensor is brilliant in the first reply!

[dklawson]

Phil, is that the same sensor you installed back in 2010?  

[The Principal]

never used one but came across this the other day - https://www.merlinmo...18x1-5-sp-trans

[phil hill]

Phil, is that the same sensor you installed back in 2010?  

Hi Doug.

 

Yes it is, and It's still going well even after a dousing in Pot-joint grease after I had a seal failure !!

 

Phil.

[phil hill]

never used one but came across this the other day - https://www.merlinmo...18x1-5-sp-trans

Same sensor, but wrong mounting thread.  The thread on the FX4 sensor is correct but the FX4 has a rectangular drive rather than a square (If Doug can find the original posts I send him in 2010 he will have the details of the thread and the guy at Sailes I spoke to).

 

Oh and the price seems to have gone up by a lot !!

 

Phil.

Edited by phil hill, 17 November 2013 - 10:06 PM.

[phil hill]

Here's the original thread details : http://www.theminifo...x4#entry1275035

 

Phil.

[grumpy dad]

Try this 

 

http://www.donbarrow...tripmeters.html

 

near the bottom of the page

and only 30 quid

[phil hill]

Try this 

 

http://www.donbarrow...tripmeters.html

 

near the bottom of the page

and only 30 quid

Yep, but still the wrong thread to fit a mini gearbox.

 

It maybe close, I seem to remember it's a weird thread like 7/8ths fine or some-such.

 

Phil.

[grumpy dad]

Hi

it fits for me on a mg midget box 

and fitted a mini cable to the out put 

[phil hill]

Hi

it fits for me on a mg midget box 

and fitted a mini cable to the out put 

Oh, ok !!  Maybe M20 fine is close enough then !!

 

Phil.

[dklawson]

M20x1.5 should not fit well and may come loose over time.  Before I learned what the actual thread size was I made several metric ones threaded 19x1 and those do fit the gearbox fairly well with positive thread engagement.   

 

The common gearbox speedometer cable thread is 3/4-26 and was on most British gearboxes from the 1960s and 1970s until some cars started using a cable that was held to the gearbox with a clamping fork/foot similar to (but obviously smaller than) the fork used to hold the distributor in place on an A+ engine.  The other end of the cable has a metric 12x1 thread to the back of the speedometer.  As with the lower cable end, sometime in the mid- to late-1970s they changed the type of upper connector to the speedometer head.

 

Looking through my old emails, the contact I had with Sailes was with a man who only identified himself by his first name, "Matthew".  The current model transducer appears to be the FX4H.  As Phil said, it comes with a rectangular drive key that is not right for the hole in the Mini gearbox.  However, Phil said they made a square drive version for him so I am sure they could do it again.  The link below (if it works) is for the Sailes FX4H speedometer transducer.

http://sailesmarketi...x4h-transducer/

[Deejayry]

Thanks all for the replies, I like the idea of mounting the  ST670 on the rear back plate, does the sensor have to detect a magnet? i was under the impression that it simply detects moving ferrous components, so in my situation where i have used alloy rear hubs could i simply set it to detect the wheel studs?

 

I do like the idea of the gearbox mounted transducer, does using this mean that i would have to order the version of the dash display containing the ST492 pulse amplifier? My only concern is the calculations to calibrate the speedo, according to the manual the speedo is configured by entering wheel circumference and number of pulses per revolution, can anyone elaborate on how you set it up?