MicroSquirt.com read only forum (Jan.15,2018)

Going to make a Hall sensor using a board mount 3 wire element potted inside of a threaded tube. Need a m14x1.5 thread, so this will be the easiest way since I can't find one that is available from the market.

Thanks for the help!

It would be easier to make a threaded bushing I would think.....almost like a helicoil. Not sure if something is available from a 14mm to a 12mm and then you could use one of these http://www.diyautotune.com/catalog/hall ... p-489.html

But the more I think about it....a bushing that size may be tricky.

A bushing that size would be effectively impossible, but the idea is good. If I could find a Hall Sensor that was smaller, regardless of metric or not, it would work out quite well. If they were the same thread pitch it would be doable with larger diameters.

I really want to avoid rethreading the existing hole since it is in an expensive magnesium engine case and is already in a very nice location with respect to my second planned trigger wheel setup. Was originally going all out and doing spark+fuel first on this bike and using the stock VR sensor, but it may be a bit smarter for me to use the stock spark setup and do fuel only first, then convert to spark using hall, then eventually once all that is figured out, convert to the stock VR sensor using hall. I bit off a bit too much at first trying to go all out all at once! Going to take baby steps.

Thanks for the help!

Aaron Silidker wrote:A bushing that size would be effectively impossible...

Not quite impossible
I saw the 14mm & 12mm reference, and knew about spark plug adapters, but don't know if this gives you any more options. USA version link here.

Personally, I would use a bike Hall sensor, which usually have an O ring oil seal and a top fixing, and just turn & mill, a flanged threaded 14mm adaptor, to take the smooth bore, and leave enough meat around it to take a top fixing.

24c wrote:

Aaron Silidker wrote:A bushing that size would be effectively impossible...

Not quite impossible
I saw the 14mm & 12mm reference, and knew about spark plug adapters, but don't know if this gives you any more options. USA version link here.

Personally, I would use a bike Hall sensor, which usually have an O ring oil seal and a top fixing, and just turn & mill, a flanged threaded 14mm adaptor, to take the smooth bore, and leave enough meat around it to take a top fixing.

Good idea but that photo isn't actually of what they are selling. What they are selling is a tall adapter that allows you to adapt a 14mm plug to a 12mm hole. I need to go 14 to 12, not 12 to 14. The minor diameter of the 14 is near the size of the major diameter of the 12, so an adapter is impossible.

Buy the time I make/buy a custom sensor, I am approaching the price of a replacement sidecover for the bike, so I think I will just modify the existing cover to fit a proven sensor instead . Problem solved...guess I figured building or sourcing a perfect one would be too time consuming when I am busy with work all the time anyway.