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| Speedo drive on 17 " wheel. http://ducatipaso.org/forum/viewtopic.php?f=1&t=2400 |
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| Author: | nilaus [ Tue Apr 15, 2008 11:23 am ] |
| Post subject: | Speedo drive on 17 " wheel. |
Hi I have the front wheel (600 SS) and i have the speedodrive (750 ss), but what else do i need to connect the drive to the wheel. It looks like that it should be some kind of machined plate. Does anyone have a illustration or a picture of it? Kind regards Klaus |
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| Author: | Tamburinifan [ Wed Apr 16, 2008 12:40 am ] |
| Post subject: | Re: Speedo drive on 17 " wheel. |
| Author: | ducinthebay [ Thu Apr 17, 2008 5:49 am ] |
| Post subject: | Re: Speedo drive on 17 " wheel. |
It is a stamped steel plate, and it should float a bit in the wheel. Its a gold zinc chromate part. The seal holds it in. I went through this a few years back putting a 17" wheel on a Paso front end onto my 90 Sport. Check that your wheel is centered in your forks. If not, it will ride really funny, and your brakes won't line up correctly. I used a series of sockets to match the clearance between the rim and the fork leg on both sides. While not the most accurate, it was the best way I could come up. It worked just fine. The 907 had a slightly different fork leg that was machined more on the inside of the left leg to accommodate the wider speedo drive. I don't remember the numbers off the top of my head, but I found someone on this list with a 907, and they were kind enough to measure it. If you search back a few year you will find the post. I ended up machining the inside of my left leg to match, and the wheel ended up perfectly centered. My Speedo is surprisingly accurate too. I stared at that thing for hours trying to find a way to reduce the size of the speedo drive, but could not come up with an elegant solution. Machining the fork leg wasn't all that easy either, but the best solution. Alignment of the axle hole to the surface that the speedo drive contacts was the most difficult part. The actual machining was done in 2 minutes. If you machine it crooked, you end up putting a bunch of force on your axle and bind up your front end. Take your time to get the setup right. The other way is to use your old speedo drive and make a shim to take up the difference. I mocked it up with some 5/8" washers at first to test it out, and it worked just fine. I rode with this setup for a while until I machined the leg. The downside is that the speedo drive isn't sealed very well and you have to keep an eye on the grease in it. Cheers, |
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