Electronic Speedo sender, My solution |
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Electronic Speedo sender, My solution |
Wasa914 |
Oct 20 2003, 11:49 PM
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#1
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Newbie Group: Members Posts: 13 Joined: 8-October 03 From: Ukiah,CA Member No.: 1,229 |
I'm a newbie to contribute but I have received a bunch of information from this board in the past which I am very grateful. Just wanted to share what I learned.
I am using a VDO electronic speedometer and have seen alot of innovative ways to send the electronic signal via the 901 trans. My solution is to cut off the slotted key end of the speedometer cable that fits the angled trans cable driver. Drilled out the cable hole and sodder in a shortened square key drive that is in the standard GM VDO sender. I had a machinist do this and make a bushing that will center the slotted cable end in the GM sender. The GM sender has a threaded nut that will fit the 901 angled cable driver which is amazing because I thought it wasn't meteric. Hopefully this picture will appear. (IMG:http://www.914world.com/bbs2/uploads/post-2-1066763782.jpg) Philip '73 914 still in transformation |
sleepdoc |
Oct 30 2003, 05:58 PM
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#2
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Newbie Group: Benefactors Posts: 24 Joined: 15-June 03 From: Pupakea, Oahu, HI Member No.: 826 |
Hi ss6,
Some solutions are completely functional and cheap. Some solutions are beautiful, engineered, funtional, and expensive. Some solutions appeal because they are elegant. Many of the mods we do to our teens are of the first variety like the BMW320 front calipers. Some for the fortunate are of the second type like James' beautiful RennShift. This mod is just plain elegant, using off the shelf parts in a mix and match way to get rid of a long revolving cable and an old and cranky mechanical speedo. (I have to rap mine just so to get it started). It also offers the advantage of allowing the adjustment of the new speedo for different wheel size with a signal adjuster like this. http://www.abbott-tach.com/era.htm .And with this ratio adapter a later model porsche electronic speedo will work correctly. Desireable ? It is in the mind of the desiree. There is no question that your solution is functional and is a very impressive piece of engineering and I followed your thread closely, but I was already trying to find a sensor that would fit on the 901 speedometer output, and Wasa914 verifying that the gm sender physically attaches to the 901 makes me want to opt for the drill, cut solder, etc instead of the cut grind bend bolt etc. You da man! with the custom sensor and the metal fins.I was wowed at your solution and would have implemented it if this other idea had not surfaced. I appreciate both you and Wasa914 posting your stuff, what an incredible resource this is. best Mark |
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