stevem2727
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 posted on 1/6/10 at 06:13 PM |
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Speedo magnets
I am starting to get really annoyed with them falling off please let me no how you secure yours to the prop shaft,many thanks
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blakep82
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| posted on 1/6/10 at 06:13 PM |
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what gearbox do you have? and what speedo?
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IVA manual link http://www.businesslink.gov.uk/bdotg/action/detail?type=RESOURCES&itemId=1081997083
don't write OT on a new thread title, you're creating the topic, everything you write is very much ON topic!
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stevem2727
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| posted on 1/6/10 at 06:16 PM |
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Sorry yes its a sierra box and etb clocks,thanks
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blakep82
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| posted on 1/6/10 at 06:19 PM |
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search for 'speedo sensor' on www.burtonpower.com, and buy both things that come up. will need a bit of extra wiring done, but its a
sensor that screws into the cable drive on the gearbox, then reprogram your speedo.
not exactly as cheap as new magnets right enough, but its the way i'm doing it
________________________
IVA manual link http://www.businesslink.gov.uk/bdotg/action/detail?type=RESOURCES&itemId=1081997083
don't write OT on a new thread title, you're creating the topic, everything you write is very much ON topic!
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alexg1965
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| posted on 1/6/10 at 06:24 PM |
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I just used Araldite to stick them to the flange at the diff end and there's no way they're coming off
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40inches
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| posted on 1/6/10 at 06:27 PM |
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Acewell magnets screw in, I think you can buy them separately (russbost?)
 
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flak monkey
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| posted on 1/6/10 at 06:43 PM |
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Stuck mine on with PU adhesive and its not come off yet....
Clean the area back to bare metal, key well with 30grit emery cloth, clean with thinners, then a generous glob of PU, stick magnet down and spread up
the sides as well.
[Edited on 1/6/10 by flak monkey]
Sera
http://www.motosera.com
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stevem2727
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| posted on 1/6/10 at 06:50 PM |
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Thanks very much for the suggestions
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Werner Van Loock
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| posted on 1/6/10 at 06:52 PM |
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i've done as above (flak), but then afterwards used fibre reļnforced tape around the prop+magnet.
The tape is with fibers lenghtwise, so no ducktape. Mine cant be torn by hand, i'll try to find what it is exactly.
it looks like this but with black top:
http://www.alibaba.com/product-gs/235985733/Fiber_Reinforced_Tapes/showimage.html
[Edited on 1/6/10 by Werner Van Loock]
http://www.clubstylus.be
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mad-butcher
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| posted on 1/6/10 at 07:31 PM |
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If using araldite use the old style 24hr curing stuff not the quick setting stuff.
far easier to use the lobro/tripoid jont on the back that way you only need one calculation and that is the rolling circumference of the wheel.
tony
[Edited on 1/6/10 by mad-butcher]
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Lars
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| posted on 1/6/10 at 07:48 PM |
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quote:
Originally posted by mad-butcher
If using araldite use the old style 24hr curing stuff not the quick setting stuff.
far easier to use the lobro/tripoid jont on the back that way you only need one calculation and that is the rolling circumference of the wheel.
tony
[Edited on 1/6/10 by mad-butcher]
that's what I am about to do, my sensor is not picking it up from the prop when going over 30mph. (must be spinning too fast, but its only a
cheap push bike sensor.)
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edspurrier
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| posted on 1/6/10 at 08:08 PM |
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Having got through 2 sensors and 6 magnets with my ETB light duty sensor, I've just got the heavy duty bolt counter and I wich I hadn't
bothered with magnets.
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BenB
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| posted on 1/6/10 at 08:42 PM |
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Unless your magnets are seriously heavy if they come off it suggest a lack of prep on the shaft beforehand. Araldite 24 is pretty strong stuff. I
managed to hold 8kg on a 2*4mm contact area. I'm sure there's an equation for centrifugal force involving propshafts and magnets and
resulting g-force but I don't know it 
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beaver34
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| posted on 1/6/10 at 09:46 PM |
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i run mine to the front wheel, there is a hole in the upright directly inline with the wheel hub bolts , pick up from wheel hub bolts, took 2 mins to
put in works perfect
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mad-butcher
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| posted on 2/6/10 at 07:49 AM |
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mine 20+ trackdays 18 months on the road and still as strong as when first fitted
 
Rescued attachment speedo pickup mount.jpg
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Werner Van Loock
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| posted on 13/6/10 at 06:17 PM |
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ditch my idea, just lost the magnet :p
though the magnets are uber strong as i retrieved it from the chassis
http://www.clubstylus.be
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JoaoCaldeira
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| posted on 14/6/10 at 12:35 PM |
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Araldite plus tape (the one with fibres)... perfect and cheap 
Joćo
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