Does anybody know of a sensor that has a very slim profile? The Ford one I have is 5/8 in diameter. I would like to find one that is slimmer as I have very limited space to mount the sensor..
diameter of VR sensor
Moderators: JeffC, rdoherty, stieg, brentp
I don't know of one, but
I don't know of one, but they may exist.
Have you an option to mount the VR sensor other than radially from the trigger wheel - it can be at any angle to the trigger wheel teeth...even 90 degrees works fine.
Maybe even a small amount over 90 degrees might work as well, but I've never tried.
Have you an option to mount the VR sensor other than radially from the trigger wheel - it can be at any angle to the trigger wheel teeth...even 90 degrees works fine.
Maybe even a small amount over 90 degrees might work as well, but I've never tried.
What is the nature of your
What is the nature of your space constraints? Are you trying to mount the trigger wheel between the pulley and the block? If so, another option is to put the trigger wheel outboard of the pulley- it does make changing the belt less convenient, but does still work well.
Here's how I have it mounted on a toyota 4AG motor:
<img src="http://picasso.org/misc/mr2/engine/timi ... nted.jpg"/>
Here's how I have it mounted on a toyota 4AG motor:
<img src="http://picasso.org/misc/mr2/engine/timi ... nted.jpg"/>
Questions...
Martin.. I'm not sure what you mean by 'other than radially..... any angle to the trigger wheel'
Brent how can I post a picture?
A picture tells a thousand words.... how can I upload a picture to show the issue I have...
anyway.. The MGB has a 2 part pulley with the outer part bonded with rubber.. I don't want to upset the harmonics of the thing, so I need to mount the wheel on the inside part of the pulley. There is almost no room to attach the wheel to the inner pulley on the engine side. On the outer side as per your illustration, I can mount the wheel, but there is almost no clearance to the cars steering rack!!
I am using a late model MGB pully where the outer portion is 'inset' and thus allows me to mount the wheel and I will have clearance. The problem is that I cannot point the sensor so it is centered on the wheel.. it would be offset as it would hit the pulley. A smaller sensor that 3/4 inch diameter(depending on the size) would give enogh clearance.
I have seen MGB installs where they make a wheel out of sheet metal, and the clreance is tight... Under a hard jab on the brakes... these engines will move forwards!!
anyway.. The MGB has a 2 part pulley with the outer part bonded with rubber.. I don't want to upset the harmonics of the thing, so I need to mount the wheel on the inside part of the pulley. There is almost no room to attach the wheel to the inner pulley on the engine side. On the outer side as per your illustration, I can mount the wheel, but there is almost no clearance to the cars steering rack!!
I am using a late model MGB pully where the outer portion is 'inset' and thus allows me to mount the wheel and I will have clearance. The problem is that I cannot point the sensor so it is centered on the wheel.. it would be offset as it would hit the pulley. A smaller sensor that 3/4 inch diameter(depending on the size) would give enogh clearance.
I have seen MGB installs where they make a wheel out of sheet metal, and the clreance is tight... Under a hard jab on the brakes... these engines will move forwards!!
Normally the trigger wheel
Normally the trigger wheel and the sensor are mounted in the same plane ie the sensor is pointing at the edge of the teeth and towards the central mounting bolt. The sensor and the trigger wheel mounting bolt are at right angles to each other, as in Brent's picture
But you can also point the sensor at the side of the teeth so the sensor and the trigger wheel mounting bolt are parallel with each other.
Yes picture = 1000 words for both you and me!
But you can also point the sensor at the side of the teeth so the sensor and the trigger wheel mounting bolt are parallel with each other.
Yes picture = 1000 words for both you and me!
Aha.... I understand...
Aha.... I understand... so you are saying that it is not imperative that the sensor is 90 degrees to the wheel... That would work, as I could angle the sensor to the wheel few degrees to not hit the pulley. Is that feasable? I suppose I am not aware of how forgiving the sensor is to position and still generate a signal... Internally, do the two wires join, or are they seperate...
Marty
Marty
Confusion reigns! Let's say
Confusion reigns!
Let's say (agree?) that Brent's picture shows the sensor at 0 degrees, and radially, to the trigger wheel ie if you follow a line from the wheel mounting bolt in the centre of the wheel to the connector of the sensor you are going out on a radius of the trigger wheel and turning by 0 degrees (ie going straight on) to go along the sensor body. The sensor is pointing at the edge of the teeth.
Now imagine following that line out from the bolt to the teeth and turning 90 degrees outwards at the teeth to get to the connector of the sensor. Let's call that as a 90 degree sensor and the sensor is now pointing at the side of the teeth.
You can have any angle from 0 to 90, and as I suggested, I expect you can even go slightly over 90 degrees
Hope that helps!
Let's say (agree?) that Brent's picture shows the sensor at 0 degrees, and radially, to the trigger wheel ie if you follow a line from the wheel mounting bolt in the centre of the wheel to the connector of the sensor you are going out on a radius of the trigger wheel and turning by 0 degrees (ie going straight on) to go along the sensor body. The sensor is pointing at the edge of the teeth.
Now imagine following that line out from the bolt to the teeth and turning 90 degrees outwards at the teeth to get to the connector of the sensor. Let's call that as a 90 degree sensor and the sensor is now pointing at the side of the teeth.
You can have any angle from 0 to 90, and as I suggested, I expect you can even go slightly over 90 degrees
Hope that helps!
When I post pictures I
When I post pictures I simply do an HTML IMG link with the file referenced elsewhere... the forums do not offer file attachements, yet. I will likely be revamping the file storage system as what I have now is no longer supported by the CMS I'm using.
Anyway - back to the topic: It may be obvious but is worth mentioning: whatever angle you use you must ensure the face of the teeth presented to the sensor matches the mounting angle of said sensor.
brent
Anyway - back to the topic: It may be obvious but is worth mentioning: whatever angle you use you must ensure the face of the teeth presented to the sensor matches the mounting angle of said sensor.
brent
I understand... I suppose
I understand... I suppose the end result is getting the correct signal..
So I went to the Ford dealer and bought the wheel from a 5 liter mustang, but pre 2000 PN# XW1Z-12A227-AC ( it is slightly less than 5 inches in diameter).
This wheel is pressed steel, is thinner, and the teeth are bent over to make the same width as the later model cast wheel PN F2LZ-12A227-BB.
I can align and center the sensor with this wheel, and it leaves me slightly more than 1/4 inch to the steering rack. I think this will be O.K.
We shall see!! The next task is to make a bracket to hold the TPS.
By the way I understand that this will work without a TPS or a MAF...???
cheers
Marty
So I went to the Ford dealer and bought the wheel from a 5 liter mustang, but pre 2000 PN# XW1Z-12A227-AC ( it is slightly less than 5 inches in diameter).
This wheel is pressed steel, is thinner, and the teeth are bent over to make the same width as the later model cast wheel PN F2LZ-12A227-BB.
I can align and center the sensor with this wheel, and it leaves me slightly more than 1/4 inch to the steering rack. I think this will be O.K.
We shall see!! The next task is to make a bracket to hold the TPS.
By the way I understand that this will work without a TPS or a MAF...???
cheers
Marty
Great, let us know how it
Great, let us know how it goes.
It will use TPS if the unit is configured that way. the MAP sensor version will measure load through manifold pressure.
Regards,
It will use TPS if the unit is configured that way. the MAP sensor version will measure load through manifold pressure.
Regards,