pekwah1
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| posted on 30/7/13 at 08:48 AM |
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Acewell Speedo Calibration
Hi Guys,
Had a search but can't find the answer..
I have an acewell 7659 with a digital speedo.
The magnet is mounted on the prop with the sensor next to it (seems to be within the measurement tolerances.
However,
I don't fully understand the calibration settings.
There is:
SPD cXXXX = where c is the circumference i believe.
SPD P-001 = signal divider for the engine?
So i've currently got the first setting as around SPD 0200 and SPD P-001 which seems acurate(ish) up to about 20 and above this speed, the
speedo stops reading anything at all and just sits on 0 MPH.
I have tried the speed setting at 500, 800, 1500 etc and this will cause the speedo to massively over-read.
Any ideas?
Regards,
Andy
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AndyW
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| posted on 30/7/13 at 10:24 AM |
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Have a look at this http://www.locostbuilders.co.uk/forum/5/viewthread.php?tid=181887
There is a reply from russbost which explains the correct way to set up. Although I do have a different dash. Best u2u Russbost as he is the man for
Acewell knowledge!!!
Hope that helps
Andy
[Edited on 30/7/13 by AndyW]
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russbost
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| posted on 30/7/13 at 01:12 PM |
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The "P" screen should be set to 001, you only need to change this if you're using an OE gearbox sensor. The "c" screen
is indeed the circumference, typical circumference on a locost would be around 1500, but you'll need to divide this by your diff ratio as
you're using prop mounted magnet, so probably around 400 - 450.
If it's reading ok at low speeds then going wrong at around 20 mph you have the sensor mounted wrongly - it's essential that the magnet
does not go down the centre line of the "barrel" of the sensor - that will give exactly the symptoms you describe, at each end of the
plastic barrel there is a line cast in the plastic, the magnet should run along one of these lines or further to the end of the barrell, it must not
pass between the lines.
I no longer run Furore Products or Furore Cars Ltd, but would still highly recommend them for Acewell dashes, projector headlights, dominator
headlights, indicators, mirrors etc, best prices in the UK! Take a look at http://www.furoreproducts.co.uk/ or find more parts on Ebay, user names
furoreltd & furoreproducts, discounts available for LCB users.
Don't forget Stainless Steel Braided brake hoses, made to your exact requirements in any of around 16 colours.
http://shop.ebay.co.uk/furoreproducts/m.html?_dmd=1&_ipg=50&_sop=12&_rdc=1
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NOTE:This user is registered as a LocostBuilders trader and may offer commercial services to other users
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pekwah1
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| posted on 30/7/13 at 01:45 PM |
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thanks russ, i'll have another look at how i've mounted, i'm pretty sure it must be that....
A quick question regarding your original post, i do seem to remember a resistor included but have no idea where it is now....
Do you know what rating a resistor it is for the RPM smoothing?
Regards,
Andy
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russbost
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| posted on 30/7/13 at 05:02 PM |
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IIRC it's 1 meg ohm
I no longer run Furore Products or Furore Cars Ltd, but would still highly recommend them for Acewell dashes, projector headlights, dominator
headlights, indicators, mirrors etc, best prices in the UK! Take a look at http://www.furoreproducts.co.uk/ or find more parts on Ebay, user names
furoreltd & furoreproducts, discounts available for LCB users.
Don't forget Stainless Steel Braided brake hoses, made to your exact requirements in any of around 16 colours.
http://shop.ebay.co.uk/furoreproducts/m.html?_dmd=1&_ipg=50&_sop=12&_rdc=1
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NOTE:This user is registered as a LocostBuilders trader and may offer commercial services to other users
|
