Neutral switch/gear position switch

[Duckndive]

6 hours ago, Dezza said:

So earlier switch from GSX1100 is 26mm and fits B12? The switch on my EFE is the larger 36mm type. Like Wraith I used to think that all GSX1100 switches were the same but that does not seem to be so.

Is that a TYpo Dazza ?

All 4V air cooled GSX 1100  use a 36mm one and yes it fits in early B12 and Oil Cooled 1100 Case,s  

using the GSX prefix can lead to confusion .......Eg a GSX 1100F . ...is not an Air Cooled bike  it's a 1127 Oil Cooled one  "Powerscreen" 

so maybe best to use A models full description  

[wraith]

From what I've found, 

All GS 2v and the gsx750 4v all use the 26mm ones (don't fit oil cooled engine) 

Gsx1100 4v seem to use the 36mm ones but only the 1984 onwards (efe, es, ex type bikes) have the gear position. These fit the oil cooled engine if you (like me) want to use/fit a gear position indicator.

I was looking into this for two reasons. 

1. My gsx1157et has gsx750es clocks and id like the gear indicator to work (yes I know sad )

2. Don't know if I like the aftermarket ones with the glued on bits, all seems a bit figgly ?

[Duckndive]

1 hour ago, wraith said:

I was looking into this for two reasons. 

1. My gsx1157et has gsx750es clocks and id like the gear indicator to work (yes I know sad )

 

So what actual engine does your "GSX 1157et"  actually have in it ? ..

[Gixer1460]

Blandit . . . . at a guess?

[Dezza]

One that accepts a 26mm neutral switch. Or maybe a 36mm one...

[wraith]

1 hour ago, Duckndive said:

So what actual engine does your "GSX 1157et"  actually have in it ? ..

MK1 b12 .

I put this in air cooled because I knew it was one of the air cooled engines that had the switch.

[wraith]

1 hour ago, Dezza said:

One that accepts a 26mm neutral switch. Or maybe a 36mm one...

36mm 

[Duckndive]

18 minutes ago, wraith said:

MK1 b12 .

I put this in air cooled because I knew it was one of the air cooled engines that had the switch.

you need an EFE one then to avoid confusion ...but as Captain said you will need to juggle wires to make it work  

[Duckndive]

Now If you were a member on the Temp ProBoards site some years back and remember your log in details then these posts may help 

I,ll let @Captain Chaos Decide if the links can stay or not  

https://old-skool-suzuki.proboards.com/thread/4539/b12-engine-efe-gear-indicator

https://old-skool-suzuki.proboards.com/thread/3514/gear-indicator-oil-cooled-engines

unfortunately the pics in the 2nd thread are missing but i recall he drilled a Neutral Switch and added the extra contacts and wires to make what he wanted 

Edited April 5 by Duckndive

[Gixer1460]

26 minutes ago, Duckndive said:

but i recall he drilled a Neutral Switch and added the extra contacts and wires to make what he wanted 

I was just thinking that myself. The arc the shift drum pin takes is usually worn into the 'switch' and if you are lucky there might be wear spots for 2,3 and 4. First and 5th should be obvious as last places in the 'track' in either direction. Drill through with 3 or 4mm drill and epoxy in some 3 or 4mm brass rod, flatten off over sheet of wet & dry (engine side) and solder wires to brass on outer side. Once done, coat with epoxy to seal. Don't forget all the outputs will be to ground, so bulbs in the indicator should have common 12v+

[Duckndive]

 

And just to throw a curveball in suzuki also use this one on an inazuma i think ...

Edited April 5 by Duckndive

[Gixer1460]

I think (believe) this one (in the centre) to be either GSX750ET or GSX1100EFE. The one on the right is simple Neutral only. If the drums do rotate in different directions its sort of clear why you don't get all the outputs ( i'm almost surprised you get any!)

[clivegto]

I fitted a 1100efe one to a B12 bottom end in my Harris. 

Edited April 5 by clivegto

[GSX1100dreamn]

On 4/5/2024 at 5:49 AM, wraith said:

So does the gsxr1100w have all the wires for the gears?  Or am I looking at this upside down 

It looks like this mounted

 

 

https://www.cmsnl.com/products/base-assy-gear-shift_3773031e01/#.XNUzHRQzbIU

 

It is only two wires blue for neutral light and pink for the gear position and the resistors are in the unit.

 

Just ignore the other references it was for research purposes of the 1250 switch but the GSXR gear position values were the same,

 

Here are the values, the same as the 1250 bandit,

 

 

And the 93 GSXR1100W so it is the water cooled GSXR switch mounted in my 82 GSX1100,

 

I used this switch for the gear position indicator on my 2009 GSX650F dash.

Edited April 5 by GSX1100dreamn
added info

[GSX1100dreamn]

5 hours ago, Gixer1460 said:

I think (believe) this one (in the centre) to be either GSX750ET or GSX1100EFE. The one on the right is simple Neutral only. If the drums do rotate in different directions its sort of clear why you don't get all the outputs ( i'm almost surprised you get any!)

Nope they are my switches,

 

left 2007 bandit 1250, middle 93 GSXR1100W (water cooled) using this in my 82 GSX1100 engine, right 82 GSX1100. 

[Mike711]

Does anyone know if a later gsxr 600/750/1000/1300 uses a 36mm switch with resistors? A Healtech GPI can work with them.

[Duckndive]

5 minutes ago, Mike711 said:

Does anyone know if a later gsxr 600/750/1000/1300 uses a 36mm switch with resistors? A Healtech GPI can work with them.

and to confuse even more a lot of the modern water boiled sports bikes use 26mm switches for gear position 

[Wee Man]

[wraith]

1 hour ago, Wee Man said:

Join the club 

[Arttu]

12 hours ago, Mike711 said:

Does anyone know if a later gsxr 600/750/1000/1300 uses a 36mm switch with resistors? A Healtech GPI can work with them.

Suzuki part number 37730-26E20 fits on a B1200 engine so I assume it's 36mm, never measured them. It gives different resistance values for all 5 gears and has separate wire for the neutral contact.

[davecara]

On 4/8/2024 at 6:15 AM, Arttu said:

Suzuki part number 37730-26E20 fits on a B1200 engine so I assume it's 36mm, never measured them. It gives different resistance values for all 5 gears and has separate wire for the neutral contact.

Do you know what this switch is native to @Arttu? I'm struggling to find one

[Arttu]

8 hours ago, davecara said:

Do you know what this switch is native to @Arttu? I'm struggling to find one

Not completely sure but I think it was listed as Bandit 1200 part. Haven't been able to figure out exactly what year or market...

[Mike711]

On 4/8/2024 at 6:15 AM, Arttu said:

Suzuki part number 37730-26E20 fits on a B1200 engine so I assume it's 36mm, never measured them. It gives different resistance values for all 5 gears and has separate wire for the neutral contact.

This is how I did it & it works 100% although not the cheapest way to get a GPI installed: The above part number  is a 36mm switch & fits but it is designed for a selector drum that rotates the opposite way to the GSX1100 & it has no reistor fitted for what is now the 3rd gear position. I opened it up & soldered in a 15kohm resistor as in the pic & then fitted a Healtech GIpro from a DRZ400 that uses the same selector drum rotation direction as the GSX.  There's a bit of wire relocation involved which I'm happy to share if anyone wants to go down the same route but the GPI works instantly & accurately.

[U1v3r]

Sorry for hijacking and bringing this thread back from the dead, but my search has led me nowhere, and you seem very knowledgeable on this subject.

I have a 1996 Bandit 1200 (model GV75A) and would like to install a modern instrument cluster with a gear indicator.

My issues began when I started searching for a compatible gear sensor. The general consensus is that a GSX 1100 F gear sensor (part number 37720-24A01) from the 1980s is a good fit, but I can't find one anywhere at a reasonable price.

I came across a gear sensor (part number 37730-26E21) that has 6 speeds and is claimed to be an original part for the Bandit 1200 (1996). I also saw a seller advertising part 37730-26E20, which appears to be the same.

My question is: Is the gear sensor (37730-26E21, attached image) really a Bandit 1200 part? The schematic on motorcyclespareparts is confusing because this part is identified as number 5 (the same as the "Cam, Gear Shift"). Additionally, they have two other numbers, 42 and 42A, labeled as gear sensors. To add to the confusion, the schematic shown when clicking on the gear sensor does not appear to be from the Bandit.

ChatGPT wasn't much help either; it suggested that it is a Bandit 1200 part but was unclear about compatibility.

On one hand, it seems logical that the early Bandits would use existing parts from the GSX 1100. On the other hand, why would Suzuki use a 6-speed sensor on a 5-speed bike?

 

Edited October 11 by U1v3r

[Gixer1460]

Can't be a Blandit1200 part as they've only 5 gears ! But saying that if the shift drum only goes to '5', the 6th pin never gets contacted! I have a thought that Busa's GPS might also fit and do have different voltage outputs for each gear - so maybe an alternative?