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Re: Crank Position Sensor - Let's find an alternative [Re: Bunny] #746919
04/07/22 11:55 PM
04/07/22 11:55 PM
Joined: Aug 2011
Posts: 390
Auckland New Zealand
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Joined: Aug 2011
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Auckland New Zealand
Apologies if this is a duplication of info.
Have been idly looking around interweb on this topic and came across Big Dog Motorcycles. Their Wolf version uses thev121 Vi x wedge motor. They advertise cam belts, also suited to M3W. Kevlar reinforced.
May be a helpful source for engine bits. Didn’t see if they had crank sensor though. They show on eBay one but explicitly not for xwedge

Re: Crank Position Sensor - Let's find an alternative [Re: Bunny] #746929
05/07/22 06:50 AM
05/07/22 06:50 AM
Joined: Mar 2011
Posts: 258
Nr Watership Down UK
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Do we know what the technology in these is for our engine? Is it a Hall effect device picking up pulse(s) from the crank...or what? Might widen the search options for replacement/repair

Wikipedia says this:

There are several types of sensors that can be used: the inductive sensor, Hall Effect sensor, magnetoresistive sensor, and optical sensor. Inductive sensors have the simplest construction and are usually purely passive devices. Hall effect and magnetoresistive sensors have the advantage over inductive sensors in that they can detect static (non-changing) magnetic fields. Optical sensors do not have great resistance against fouling but are able to provide the most precise edge detection.

Re: Crank Position Sensor - Let's find an alternative [Re: Bunny] #747006
05/07/22 05:53 PM
05/07/22 05:53 PM
Joined: Aug 2019
Posts: 220
Las Vegas
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Las Vegas
I was fortunate enough to buy a spare one before they all disappeared. There was a helpful thread here about what we should grab before they disappeared. Some pictures of it below.

Looking at it, it is not optical, as the end is solid with a small metal centre. It is magnetic, as the supplied washer was sticking to it, but beyond that I can't tell much. There are no visible markings or identifiers on it.
Good luck with the search!

[Linked Image]
[Linked Image]
[Linked Image]
[Linked Image]


2020 M3W
Re: Crank Position Sensor - Let's find an alternative [Re: Bunny] #747180
07/07/22 01:11 PM
07/07/22 01:11 PM
Joined: Oct 2007
Posts: 405
Georgia, USA
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Georgia, USA
Big Dog motorcycles does stock a sensor that will fit our Three Wheelers.
The Big Dog part number is BDM170-00382
S&S number 55-021.

They say the difference between 106-0734 and 55-01 is that the latter has a slightly longer wire but the sensor is the same.

I have one on order and will update once I have received it.


Lance
1981 Plus 8
2016 Three Wheeler
2014 Corvette Stingray Convertible z51
Re: Crank Position Sensor - Let's find an alternative [Re: Bunny] #747194
07/07/22 03:05 PM
07/07/22 03:05 PM
Joined: Feb 2019
Posts: 3,639
Port Orchard, WA.
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Port Orchard, WA.
Good info Lance, thank you.

Re: Crank Position Sensor - Let's find an alternative [Re: Lance] #747208
07/07/22 04:40 PM
07/07/22 04:40 PM
Joined: Mar 2014
Posts: 1,459
Leicestershire, UK
Bunny Offline OP
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Leicestershire, UK
Originally Posted by Lance
Big Dog motorcycles does stock a sensor that will fit our Three Wheelers.
The Big Dog part number is BDM170-00382
S&S number 55-021.

They say the difference between 106-0734 and 55-01 is that the latter has a slightly longer wire but the sensor is the same.

I have one on order and will update once I have received it.
Yes, very encouraging. Please do let us know what turns up. thumbs


Andy
Re: Crank Position Sensor - Let's find an alternative [Re: Bunny] #747230
07/07/22 06:31 PM
07/07/22 06:31 PM
Joined: Jan 2015
Posts: 27
San Diego, California, USA
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Posts: 27
San Diego, California, USA
Thank you Lance | Please keep us updated on your progress with S&S Part

I did have the opportunity to speak with a tech at S&S yesterday. His comment was to keep checking the S&S website, especially towards the end of the month (July). S&S has commissioned to produce additional inventory of Part # 106-0734. I hope it is true information.

Last edited by PocketRocket; 07/07/22 06:37 PM.

M3W
Plus 4
Re: Crank Position Sensor - Let's find an alternative [Re: PocketRocket] #747235
07/07/22 07:40 PM
07/07/22 07:40 PM
Joined: Sep 2019
Posts: 113
Lot et Garonne, France
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Lot et Garonne, France
Hopefully I am wrong but if you Google that part number and go to Big Dog website then

1/ Sensor body looks far too short (AKA Harley type)

2/ Cable exit from sensor body shown would foul on crankcase - needs to be rotated 90 degrees....

Re: Crank Position Sensor - Let's find an alternative [Re: Bunny] #747623
11/07/22 09:45 PM
11/07/22 09:45 PM
Joined: Sep 2010
Posts: 2,104
Wales
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Taffmog Offline
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Wales
I am reliably informed that MMC will have a delivery of these from S & S in the next week or two 🤞


1969 4/4
1995 plus 8
2002 Aero S1
2013 M3W
2014 Plus 8
Re: Crank Position Sensor - Let's find an alternative [Re: Bunny] #747625
12/07/22 02:13 AM
12/07/22 02:13 AM
Joined: Oct 2007
Posts: 405
Georgia, USA
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Lance Offline
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Georgia, USA
Stevo666, Just received my part from Big Dog, and you are correct, it is not the correct part for our purpose.


Lance
1981 Plus 8
2016 Three Wheeler
2014 Corvette Stingray Convertible z51
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