Re: 1981 Piaggio/Vespa Si Build

Joe K /
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My plan with the forks is to use the upper and lower yokes from the random dirt bike forks I got from WillD and Derek (thanks guys!!). I was going to make the fork tubes myself so I could use all the lower pieces from the original Si forks. I think the tubes would have to taper from a 28mm diameter down to 26mm if I remember correctly. By using the lower parts I also won't have to worry about the rim and brake plate lining up with aftermarket forks.

The head tube on this frame has a larger than normal diameter and it is short in length. I was going to make a sleeve to slip inside the stock head tube and weld it at the top and bottom. The size of the sleeve will depend on the yoke I use, I guess.

BTW when I cut this open I noticed that the seat post must have just filled with water and the top of the gas tank, inside the frame was rusting like crazy. I wouldn't be surprised if a lot of these had phantom fuel leaks inside the seat tube where you normally wouldn't be able to find it.

IMG_4272.jpg
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Subject Written By Posted
  1981 Piaggio/Vespa Si BuildTopic by: Bryan Shank Bryan Shank 08/02/22 03:13PM
  Re: 1981 Piaggio/Vespa Si BuildRe: Joe K Joe K 08/02/22 03:29PM
  Re: 1981 Piaggio/Vespa Si BuildRe: Bryan Shank Bryan Shank 08/02/22 03:40PM
  Re: 1981 Piaggio/Vespa Si BuildRe: campeona del mundo campeona del mundo 08/02/22 03:58PM
  Re: 1981 Piaggio/Vespa Si BuildRe: Bryan Shank Bryan Shank 08/02/22 04:01PM
  Re: 1981 Piaggio/Vespa Si BuildRe: Joe K Joe K 08/02/22 04:20PM
  Re: 1981 Piaggio/Vespa Si BuildRe: Bryan Shank Bryan Shank 08/02/22 04:30PM
  Re: 1981 Piaggio/Vespa Si BuildRe: Bryan Shank Bryan Shank 08/13/22 01:17PM
  Re: 1981 Piaggio/Vespa Si BuildRe: Ike Pipe Ike Pipe 08/13/22 06:11PM
  Re: 1981 Piaggio/Vespa Si BuildRe: Bryan Shank Bryan Shank 08/13/22 06:17PM
  Re: 1981 Piaggio/Vespa Si BuildRe: Ike Pipe Ike Pipe 08/13/22 06:24PM
  Re: 1981 Piaggio/Vespa Si BuildRe: Bryan Shank Bryan Shank 08/13/22 06:30PM
  Re: 1981 Piaggio/Vespa Si BuildRe: Ike Pipe Ike Pipe 08/13/22 06:44PM
  Re: 1981 Piaggio/Vespa Si BuildRe: Bryan Shank Bryan Shank 08/13/22 06:50PM
  Re: 1981 Piaggio/Vespa Si BuildRe: Ike Pipe Ike Pipe 08/13/22 09:08PM
  Re: 1981 Piaggio/Vespa Si BuildRe: Bryan Shank Bryan Shank 08/13/22 09:31PM
  Re: 1981 Piaggio/Vespa Si BuildRe: Bryan Shank Bryan Shank 08/22/22 02:10PM
  Re: 1981 Piaggio/Vespa Si BuildRe: Dirty30 Dillon Dirty30 Dillon 08/23/22 03:08PM
  Re: 1981 Piaggio/Vespa Si BuildRe: Bryan Shank Bryan Shank 08/23/22 04:07PM
  Re: 1981 Piaggio/Vespa Si BuildRe: Bryan Shank Bryan Shank 08/23/22 04:11PM
  Re: 1981 Piaggio/Vespa Si BuildRe: - Joe - - Joe - 08/23/22 05:12PM
  Re: 1981 Piaggio/Vespa Si BuildRe: Bryan Shank Bryan Shank 08/23/22 05:16PM
  Re: 1981 Piaggio/Vespa Si BuildRe: - Joe - - Joe - 08/23/22 05:58PM
  Re: 1981 Piaggio/Vespa Si BuildRe: Bryan Shank Bryan Shank 08/23/22 06:01PM
  Re: 1981 Piaggio/Vespa Si BuildRe: - Joe - - Joe - 08/23/22 07:30PM
  Re: 1981 Piaggio/Vespa Si BuildRe: Josh G Josh G 08/22/22 03:28PM
  Re: 1981 Piaggio/Vespa Si BuildRe: Bryan Shank Bryan Shank 08/22/22 03:41PM
  Re: 1981 Piaggio/Vespa Si BuildRe: Josh G Josh G 08/22/22 03:57PM
  Re: 1981 Piaggio/Vespa Si BuildRe: Bryan Shank Bryan Shank 08/22/22 04:08PM
  Re: 1981 Piaggio/Vespa Si BuildRe: b to the eff b to the eff 08/23/22 04:38PM
  Re: 1981 Piaggio/Vespa Si BuildRe: Bryan Shank Bryan Shank 08/23/22 10:28AM
  Re: 1981 Piaggio/Vespa Si BuildRe: CORN PED CORN PED 08/25/22 04:30PM
  Re: 1981 Piaggio/Vespa Si BuildRe: CORN PED CORN PED 08/25/22 04:31PM
  Re: 1981 Piaggio/Vespa Si BuildRe: CORN PED CORN PED 08/25/22 04:32PM
  Re: 1981 Piaggio/Vespa Si BuildRe: CORN PED CORN PED 08/25/22 04:33PM
  Re: 1981 Piaggio/Vespa Si BuildRe: Bryan Shank Bryan Shank 08/26/22 10:13AM
  Re: 1981 Piaggio/Vespa Si BuildRe: CORN PED CORN PED 08/26/22 10:18AM
  Re: 1981 Piaggio/Vespa Si BuildRe: Bryan Shank Bryan Shank 08/26/22 10:23AM
  Re: 1981 Piaggio/Vespa Si BuildRe: CORN PED CORN PED 08/26/22 10:46AM
  Re: 1981 Piaggio/Vespa Si BuildRe: Bryan Shank Bryan Shank 08/26/22 11:08AM
  Re: 1981 Piaggio/Vespa Si BuildRe: Bryan Shank Bryan Shank 08/27/22 01:05PM
  Re: 1981 Piaggio/Vespa Si BuildRe: Bryan Shank Bryan Shank 08/28/22 10:55AM
  Re: 1981 Piaggio/Vespa Si BuildRe: Bryan Shank Bryan Shank 09/07/22 10:49AM
  Re: 1981 Piaggio/Vespa Si BuildRe: Bryan Shank Bryan Shank 09/16/22 09:20PM
  Re: 1981 Piaggio/Vespa Si BuildRe: Jay Rivett Jay Rivett 10/16/22 05:43PM
  Re: 1981 Piaggio/Vespa Si BuildRe: Bryan Shank Bryan Shank 10/16/22 05:50PM
  Re: 1981 Piaggio/Vespa Si BuildRe: Bryan Shank Bryan Shank 09/20/22 06:28PM
  Re: 1981 Piaggio/Vespa Si BuildRe: Brad Cat (LSLB) Brad Cat (LSLB) 09/22/22 10:04PM
  Re: 1981 Piaggio/Vespa Si BuildRe: Bryan Shank Bryan Shank 09/22/22 10:07PM
  Re: 1981 Piaggio/Vespa Si BuildRe: Brad Cat (LSLB) Brad Cat (LSLB) 09/22/22 10:15PM
  Re: 1981 Piaggio/Vespa Si BuildRe: Bryan Shank Bryan Shank 09/22/22 10:17PM
  Re: 1981 Piaggio/Vespa Si BuildRe: Bryan Shank Bryan Shank 10/04/22 12:13PM
  Re: 1981 Piaggio/Vespa Si BuildRe: Tom Boyd Tom Boyd 10/10/22 05:28PM
  Re: 1981 Piaggio/Vespa Si BuildRe: Bryan Shank Bryan Shank 10/10/22 05:33PM
  Re: 1981 Piaggio/Vespa Si BuildRe: Bryan Shank Bryan Shank 10/10/22 04:44PM
  Re: 1981 Piaggio/Vespa Si BuildRe: Bryan Shank Bryan Shank 10/16/22 11:51AM
  Re: 1981 Piaggio/Vespa Si BuildRe: Bryan Shank Bryan Shank 10/25/22 02:46PM
  Re: 1981 Piaggio/Vespa Si BuildRe: Bryan Shank Bryan Shank 10/25/22 04:16PM
  Re: 1981 Piaggio/Vespa Si BuildRe: capo_dei_ bois capo_dei_ bois 10/26/22 03:30PM
  Re: 1981 Piaggio/Vespa Si BuildRe: Bryan Shank Bryan Shank 10/26/22 04:03PM
  Re: 1981 Piaggio/Vespa Si BuildRe: Bryan Shank Bryan Shank 10/26/22 04:45PM
  Re: 1981 Piaggio/Vespa Si BuildRe: Bryan Shank Bryan Shank 11/08/22 12:05PM
  Re: 1981 Piaggio/Vespa Si BuildRe: Ike Pipe Ike Pipe 11/12/22 09:19PM
  Re: 1981 Piaggio/Vespa Si BuildRe: Bryan Shank Bryan Shank 11/14/22 05:16PM

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