Speed Sensor rotor. - SV650.org

Jayneflakes · 01-04-10, 09:09 PM

I broke it!

Damn thing is made from monkey brains anyway.

Will it work if I glue it back together? Also does it need all four tabs, a silly question I am aware, but I lost one?

It feels like ferrous impregnated plastic and I am trying to work out how it measures the speed, I think the four tabs pass by the sensor, thus activating it that way. However less nerdy members of the household think that this is unlikely.

Found a replacement part on the web, but it is in Europe and is going to cost twenty Euros. Which is a lot better than the quote I got for the whole speed sensor unit at £177!

Anyone know of any places where I can pick one up cheap, it does not have to be brand new, just as long as it is in one piece and not missing any tabs?

On the plus side, I have a nice shiny new front tyre as of today. So can use the bike again this weekend, minus speed indicator. Also very nearly booked my test, but the DSA computer is broken and no tests available!

01-04-10, 09:13 PM

i think the rotor is £22 from suzuki

punyXpress · 01-04-10, 09:15 PM

Works the same way as a cycle speedo.
Easiest way to double your speed on one of them is fit another magnet!

keith_d · 01-04-10, 09:36 PM

Mine's held together with sticky axle grease at the moment because the superglue wouldn't keep it together. I'll probably have to replace it next time I get a front tyre.

I can't remember whether it's got three or four lugs now.

Keith.

01-04-10, 10:07 PM

I need to replace mine, when i put my wheels back on the other day i noticed it only had one lug on the rotor

Sid Squid · 01-04-10, 10:38 PM

I've stuck broken ones back together with a hot glue gun a couple of times, (no, I didn't break them!).
It doesn't need all four lugs, there's a few bikes I know of that have only two.

01-04-10, 10:42 PM

when mine broke well lets put it this way, there wasn't any legs lefts body had disintegrated and jam'd in the speed reader casing thing, good job i got the whole front speed reader off ebay for £30

Jayneflakes · 02-04-10, 01:43 PM

Amazing what can be done with a blob of Araldite! Woking again now.

Right time to order me some Bars!

yorkie_chris · 02-04-10, 03:02 PM

Yeah the sensor is a hall effect one. It works by metal in the rotor passing by the sensor which is some semiconductor and swaps between conducting and nonconducting.

phi-dan · 02-04-10, 04:39 PM

3 out 4 of mine are held on with araldite - previously they were attached to the wheel by grease and will power (not mine - I hadn't known they were broken!)

01-04-10, 09:13 PM	#2
barwel1992 Guest Posts: n/a	Re: Speed Sensor rotor i think the rotor is £22 from suzuki

01-04-10, 09:15 PM	#3
punyXpress Member Mega Poster Join Date: Feb 2008 Location: Riding, North Posts: 2,664	Re: Speed Sensor rotor Works the same way as a cycle speedo. Easiest way to double your speed on one of them is fit another magnet! __________________ Was: K2 naked in rapid yellow - gone to a better? place Now: Street Triple R

01-04-10, 09:36 PM	#4
keith_d Member Mega Poster Join Date: Feb 2009 Location: Ruislip Posts: 1,131	Re: Speed Sensor rotor Mine's held together with sticky axle grease at the moment because the superglue wouldn't keep it together. I'll probably have to replace it next time I get a front tyre. I can't remember whether it's got three or four lugs now. Keith.

01-04-10, 10:07 PM	#5
Holdup Guest Posts: n/a	Re: Speed Sensor rotor I need to replace mine, when i put my wheels back on the other day i noticed it only had one lug on the rotor

01-04-10, 10:38 PM	#6
Sid Squid No, I don't lend tools. Mega Poster Join Date: Jul 2003 Location: Skunk Works, Nth London Posts: 8,680	Re: Speed Sensor rotor I've stuck broken ones back together with a hot glue gun a couple of times, (no, I didn't break them!). It doesn't need all four lugs, there's a few bikes I know of that have only two. __________________ If an SV650 has a flat tyre in the forest and no-one is there to blow it up, how long will it be 'til someone posts that the reg/rec is duff and the world will end unless a CBR unit is fitted? A little bit of knowledge = a dangerous thing. "a deathless anthem of nuclear-strength romantic angst"

01-04-10, 10:42 PM	#7
barwel1992 Guest Posts: n/a	Re: Speed Sensor rotor. when mine broke well lets put it this way, there wasn't any legs lefts body had disintegrated and jam'd in the speed reader casing thing, good job i got the whole front speed reader off ebay for £30

02-04-10, 03:02 PM	#9
yorkie_chris Noisy Git Mega Poster Join Date: Apr 2007 Location: Halifax/Leeds Posts: 26,645	Re: Speed Sensor rotor. Yeah the sensor is a hall effect one. It works by metal in the rotor passing by the sensor which is some semiconductor and swaps between conducting and nonconducting. __________________ Currently Ex Biker Now rebuilding a 63' fishing trawler as a dive boat

02-04-10, 04:39 PM	#10
phi-dan Member Join Date: Apr 2009 Location: going up Camborne hill coming down Posts: 251	Re: Speed Sensor rotor. 3 out 4 of mine are held on with araldite - previously they were attached to the wheel by grease and will power (not mine - I hadn't known they were broken!) __________________ Was: Red curvy S: crash bungs, double bubble screen, fenda extenda, HEL front lines, OEM belly pan Now: Blue FZ6 Fazer

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