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Buell Motorcycle Forum » Old School Buell » Archive through March 30, 2008 » Mechanical to electronic speedometer conversion « Previous Next »

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Langperf
Posted on Sunday, March 16, 2008 - 12:37 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Has anyone done this. I think I saw a picture of the cases jigged up in a mill indexing a hole for an electronic speedo pickup to be installed. Does the speedo pickup sense of one of the tranny gearsets?, or is there a reluctor mounted to one of the trans shafts?

I was thinking of doing an XB wheel swap....but theres not enough meat on the front XB wheel axle hub to allow machining a place for the mechanical drive. So it would have to be a tach only bike, or convert to electronic speedo
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Chasespeed
Posted on Sunday, March 16, 2008 - 12:39 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Speedometers? We dont need no stinking speedometers....


I rode mine for over a year with a speedo..

Chase
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Langperf
Posted on Sunday, March 16, 2008 - 12:43 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Yeah me too....as often as the speedo cable breaks...lol. it is nice to have in certain situations( Like when Johnny Law is right behind you and you have a D&D can on your bike)
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Ratbuell
Posted on Sunday, March 16, 2008 - 01:04 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I plan on using an electronic on the S2 I'm building from scratch...but have the same question, does it read the stock gearset or do you have to put some sort of trigger on the mainshaft?
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Chasespeed
Posted on Sunday, March 16, 2008 - 01:35 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Okay, after scoping the S/M

I can find NOTHING stating, or mentioning a Reluctor gear for the speed sensor...

BUT, looking at some diagrams, it does appear that it is reading 5th gear...

So, it could be that the ger itself is different, and has the magnets in it, to be a reluctor?

I am not sure, but, hope that can provide some insight..

Chase
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Langperf
Posted on Sunday, March 16, 2008 - 01:42 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

thanks chasespeed...anyone else....its probably just sensing off the teeth the pickup is a proximity sensor most likely....i couldnt find anything in KV
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Ratbuell
Posted on Sunday, March 16, 2008 - 02:17 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Hm. Looking it up, both a 95 S2 and a 2002 S3T (EFI/electronic speedo) show the same 5th gear part number, 35034-94. Guess its just a hall-effect pickup that reads the teeth as they go by...
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Rickie_d
Posted on Monday, March 17, 2008 - 01:27 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Langperf - It was probably one of my cases that you saw last month here.

http://www.badweatherbikers.com/buell/messages/476 23/339115.html?1204338758

The sender reads the fifth gear teeth with about a .020 to .030 airgap
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Mikej
Posted on Monday, March 17, 2008 - 09:30 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

The most cost effective way to convert a mechanical speedo'd bike over to an electronic speedo:
http://www.nashbar.com/results.cfm?category=600082 &subcategory=60001035&storetype=&estoreid=&init=y& pagename=Category%3A%20Cyclocomputers

YMMV ; )
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Velocity
Posted on Monday, March 17, 2008 - 11:01 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Rickie_d, what front end did you use? I have been working on an XB front end with XB triples on an S2. I could not use the stock speedo drive and use the XB front wheel, no room for the speedo drive. Modify the XB wheel looks like a lot of work. SO it looks like I am going to the electronic way.

Scott
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Rickie_d
Posted on Monday, March 17, 2008 - 01:29 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Scott -

The forks in those pics are stock S2 that I had a shorter cable made for the speedo drive.

I have since machined the cases for the electronic pickup to run a more compact gauge package.
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Velocity
Posted on Monday, March 17, 2008 - 01:56 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Well after looking at it again you could machine some off of the XB leg to get the space. Have to check the axle. Anyone else pulled this off?

Scott
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Bad_karma
Posted on Tuesday, March 18, 2008 - 01:32 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Scott
I have seen sensors that mount to the swing arm and trigger off the pulley bolt heads. This is the option that I'm considering.
Joe
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Fasted
Posted on Tuesday, March 18, 2008 - 04:08 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

check out jodie's solution:

http://www.badweatherbikers.com/buell/messages/476 23/335298.html?1202407572
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Guell
Posted on Tuesday, March 18, 2008 - 04:47 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

yeah, im considering running the veypor speedo/tach. It uses a sensor that triggers off of a magnet you attatch to the wheel.
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