For your 2008 you will need 8 magnets

For the hall effect sensor I used the GS100701 part number 512401 from https://www.jameco.com/webapp/wcs/s...FUZ4WmdpsPojh2fmYHN C5z6KlhYP/+NXpz34pde&ddkey=https:StoreCatalogDrillDownView

 

Gsxr´s speed sensor should do the job, and it uses same plug (to the speedo) as the stock Sv's, which makes things a little bit easier. Early second gen. speedos work with 4 magnets, but later models need 8.

Not quite:
all 05+ require 8; <05 need 4.

So just to make sure I'm doing this right. I'll be running an 05 GSXR 1000 wheel/rotor setup on my 07 SV. Do I use 4 or 8 magnets? If 4 I just put them in every other hole and if 8 every hole (rotor has 8 holes) using these magnets http://www.leevalley.com/US/wood/page.aspx?cat=1,42363,42348&p=32065 in these holders http://www.leevalley.com/US/wood/page.aspx?cat=1,42363,42348&p=32066 and I'll be using this sensor https://www.jameco.com/webapp/wcs/s...FUZ4WmdpsPojh2fmYHN C5z6KlhYP/+NXpz34pde&ddkey=https:StoreCatalogDrillDownView mounted like the pic above. Wiring the sensor like like this brown = VCC goes to orange/red
blue = Ground goes to black/white
black = output goes to pink

Also anywhere to buy that bracket so I don't have to make it?

Please re-read the thread it's been said 3 times in 3 pages

 

You should know there are two types of Hall effetc sensor: active and passive. The passive ones detect a passing magnet, the active ones can detect any piece of iron, like a bolt head. I find the active type more convenient since I can use it to pick up the disc bolts, then use a speedo-healer to correct the frequency. I've used ones from a GSXR and from a Ducati, or Mouser sell them.

 

Gsxr´s speed sensor should do the job, and it uses same plug (to the speedo) as the stock Sv's, which makes things a little bit easier. Early second gen. speedos work with 4 magnets, but later models need 8.

 

Any idea which years or 600/750/1000 this is true for?

 

Where did you get your magnets from???

 

magnets

cups

and will i need the speedo healer??

No, you use 8 magnets so you don't need a speedo healer

 

and will i need the speedo healer??

 

The bike from the moto mag has 8.

 

The sensor is a Cherry GS100701 (Same part as the Digikey item) hall effect switch from a local distributor called Master Distributors (Santa Clara, CA) but they have distributors everywhere.

 

And you just used epoxy to hold them in???

 

Epoxy alone is good enough.

 

Epoxy holds aircraft together, it's strong if you use the right grade.

However kryptonite for epoxy is heat, so putting the magnets in the rotor buttons is not so great from that point of view. Then again, if the magnet is inside the button, the glue isn't under much stress.

I once ran a race weekend with my radiator filler neck attached only by Loctite high-temp epoxy, no problems...

PS: you can get good rare-earth magnets from cheap in-ear head-phones. I used some from free pair given to me on virgin airlines for the
speedo on my bicycle

 

... you can get good rare-earth magnets from cheap in-ear head-phones. I used some from free pair given to me on virgin airlines for the speedo on my bicycle

Way to go 'green' Graham!

 

Yes. Are you sure there's 9 ? not 8 ?

 

Yes. Are you sure there's 9 ? not 8 ?...

Yes, there are some rotors with 9 buttons

Also I think I counted 9 spots to place the magnates should I use all 9 or will that mess things up?

No, you cannot use 9 and get correct reading - and you should not use 8 of those 9 either as that extended 'space' will throw things off.
Your options are
1) to not use the the button locations and try to space equally at 45 deg intervals around the rotor at another mounting point;
2) use 9 and live with the speedo error - it will be about 12% fast over & above the already inherent factory 'fast' indication - probably about 20% over actual speed will be indicated.
3) use 9 (or 3!) and install a speed healer device - expensive, but probably best option.

 

Where can I buy a speed healer?

 

Lots of different manufacturers
Healtech v4 is the one I have

This one really impresses me - have no personal experience of it but great price and super-compact
http://www.12oclocklabs.com/p_sdrd.htm

 

dont know about the USA spec bikes but i have found that any SV650 with a lambda (oxygen) sensor needs 8 magnets while all others including the curvy (fist gen) need 4.

 

d... i have found that any SV650 with a lambda (oxygen) sensor needs 8 magnets while all others including the curvy (fist gen) need 4.

Not quite:
all 05+ require 8; <05 need 4.

 

I am glad this was brought up. i have been riding my SV with the front end swap and no speedo for half the season. I need to get it together. thanks for sharing!

 

which wires mach to what color on harness my sensor has red black and green???? i finnally have the magnets and sensor i am actually using first gen busa rotors with spacers under the calipers so i can ust the stock 08 sv front wheel so they look the same. just in case people are unaware the first gen bussa rotors have same bolt pattern as stock but are 10mm bigger in diameter, there for make a 5 mm space to move the caliper away then i dont have the skinny spoke wheel

 

which wires mach to what color on harness my sensor has red black and green????

on the sensor I used

brown = VCC goes to orange/red
blue = Ground goes to black/white
black = output goes to pink

did your sensor or the site you bought it from give you the specs as to which wire is which?

 

ok thanks

 

I think ??? he meant busa front wheel so it matches his stock rear wheel, at least that would make more sense.

 

Even Busa wheel not direct bolt-on - needs special spacer and the rotors will be a little offset in calipers
Hard to know till we get clarification - Busa rotors do actually have same hub/bolt pattern as the SV wheel .......... that's the way I interpreted the post

 

Thanks for the name of the software, is that a stand alone software or is it part of solidworks or autocad or something? And yeah the holes are the same size straight through. So what size should I get?

 

Thanks for the name of the software, is that a stand alone software or is it part of solidworks or autocad or something?

Standalone. http://en.wikipedia.org/wiki/NX_(Unigraphics)

 

[/QUOTE]

This is how I wired the sensor but nothing happens when I spin the front wheel. I don’t have the speed healer in but I figured that I would get something from the speedo but nothing. Its stays at zero.

brown = VCC goes to orange/red
blue = Ground goes to black/white
black = output goes to pink

Here are some more question though.

1. How close does the magnate have to be to the sensor?
2. Which direction should the magnate be facing when in front of the sensor. I mounted in the rotor with the magnate being attracted to the sensor. Is that right?
3. What am I missing?

 

This is how I wired the sensor but nothing happens when I spin the front wheel. I don’t have the speed healer in but I figured that I would get something from the speedo but nothing. Its stays at zero.

brown = VCC goes to orange/red
blue = Ground goes to black/white
black = output goes to pink

Here are some more question though.

1. How close does the magnate have to be to the sensor?
2. Which direction should the magnate be facing when in front of the sensor. I mounted in the rotor with the magnate being attracted to the sensor. Is that right?
3. What am I missing?[/QUOTE]

Hey, that's my bike !!! ;D

1. Make the gap 5mm
2. Magnets should be facing the sensor in the direction where they are attracted to it.
3. Nothing that I can see. You wiring is correct. i would suspect you have the magnets the wrong way around.

 

I would try flipping the magnets. The magnets I bought had a red dot on one side, the red dot went towards the sensor. You could always just stick a few on the rotor itself to test it.

 

I used 1/4" x 1/10" Magnet, 3/8" Cup for 1/4" Magnet and glued them in

 

and it works great. tested it at slow and high speeds

 

It is actually 1/2

 

I just remeasured my 08-09 rotor buttons with a micrometer and the inside diameter was 11mm for the middle part and 12mm on the shoulder (not that your will be the same as mine). Also I thought to 06 750 had 8 buttons, do you have aftermarket rotors?

My paint skill aren't the best but to show you how I measured mine and the red area is where I will probably have to remove about .35mm off each side to make the 1/2" cups fit since they should be about 12.7mm.

 

This is the rotor that I have.

http://cgi.ebay.com/ebaymotors/2007...-FRONT-ROTOR-/200595130631?pt=Motorcycles_Parts_Accessories&hash=item2eb466c907

-

I bought the bike with the front end already installed, so bear with me...

 

I need some help with this as well.

Info:

1993 GSXR750 front end
Sensor - Cherry GS101201 Gear tooth sensor
5 magnets drilled into rotor evenly spaced
magnets are 3" from axle


So I cant get any reading on my speedo at all. I have tried both sides of the magnet (attracting / opposing).

Can someone tell me what I am doing wrong? What spacing do I need for accurate readings? Correct number of magnets?

Thanks in advance!