Vespa Tuning/Gearing Q's

Jarod V. /
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Hey guys, I've been tuning my Ciao for a little bit now trying to get it dialed in and it's getting pretty close and running really well! However, I'm having an issue getting it to go faster than about 32mph on the flats. Here's the setup:

-DR43 lightly case matched, Malossi head w/gasket, ported 13mm intake, opened contact patch (not too big), Mazzu anticipato crank, Gianelli Fire.

-13:13 SHA, 70 or 72 jet (can't remember exactly which atm)

-Points set at .016

-Polini Variator, 6g weights

-Malossi belt

-Stock Euro clutch with Malossi black springs (2000rpm clutch engagement), aftermarket steel bellhousing

-12.5 : 1 gears in the transmission on Si cross mags

The engine runs good with a steady idle, has good pull throughout the powerband, gets up to speed quickly and can pull pretty decent hills at ok speeds. I feel the variator is tuned pretty spot on as the pipe comes on and pulls right in the beginning of variation and pulls it to full variation plus a few more rpm after that. After that though it's like it hits a wall even though the engine is pretty up there in RPM's. I've messed with the jetting and different weights up and down the range with little difference in top speed (unless of course I tune it too far out in which top speed suffers).

I'm wondering if maybe the transmission gears are the limiting factor here? Or maybe the pipe just can't hang? What are other people with a DR and variators + super low gears pulling for top speed? I've searched the forums and have found other people experiencing the same issues but never a resolution, I really wonder what's causing the issue.

Any Vespa gurus have some sage advice? (edited)

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Subject Written By Posted
  Vespa Tuning/Gearing Q'sTopic by: Jarod V. Jarod V. 10/18/20 11:22PM
  Re: Vespa Tuning/Gearing Q'sRe: - Joe - - Joe - 10/19/20 08:42AM
  Re: Vespa Tuning/Gearing Q'sRe: Jarod V. Jarod V. 10/19/20 12:01PM
  Re: Vespa Tuning/Gearing Q'sRe: - Joe - - Joe - 10/19/20 12:41PM
  Re: Vespa Tuning/Gearing Q'sRe: pat splat pat splat 10/19/20 01:06PM
  Re: Vespa Tuning/Gearing Q'sRe: Jarod V. Jarod V. 10/19/20 03:51PM
  Re: Vespa Tuning/Gearing Q'sRe: Jarod V. Jarod V. 11/30/20 01:55PM
  Re: Vespa Tuning/Gearing Q'sRe: Jeremy Edwards Jeremy Edwards 11/09/20 05:46PM
  Re: Vespa Tuning/Gearing Q'sRe: pat splat pat splat 11/09/20 05:58PM
  Re: Vespa Tuning/Gearing Q'sRe: EH FCC of the QCB EH FCC of the QCB 11/09/20 08:43PM
  Re: Vespa Tuning/Gearing Q'sRe: Graham Motzing Graham Motzing 11/09/20 08:46PM
  Re: Vespa Tuning/Gearing Q'sRe: Jeremy Edwards Jeremy Edwards 11/10/20 04:12AM
  Re: Vespa Tuning/Gearing Q'sRe: Dirty30 Dillon Dirty30 Dillon 11/10/20 08:31AM
  Re: Vespa Tuning/Gearing Q'sRe: Jarod V. Jarod V. 12/10/20 09:02PM
  Re: Vespa Tuning/Gearing Q'sRe: todd amundson todd amundson 12/10/20 11:35PM
  Re: Vespa Tuning/Gearing Q'sRe: Jarod V. Jarod V. 12/25/20 04:43PM
  Re: Vespa Tuning/Gearing Q'sRe: Declan g Declan g 12/14/20 10:13AM
  Re: Vespa Tuning/Gearing Q'sRe: Jason ( ͡° ͜ʖ ͡°) Jason ( ͡° ͜ʖ ͡°) 12/26/20 02:52PM
  Re: Vespa Tuning/Gearing Q'sRe: Jarod V. Jarod V. 12/29/20 06:16PM
  Re: Vespa Tuning/Gearing Q'sRe: Jarod V. Jarod V. 01/03/21 01:54PM
  Re: Vespa Tuning/Gearing Q'sRe: . Chudas. . Chudas. 01/03/21 02:14PM
  Re: Vespa Tuning/Gearing Q'sRe: - Joe - - Joe - 01/03/21 03:08PM
  Re: Vespa Tuning/Gearing Q'sRe: Matt Grantonic Matt Grantonic 01/06/21 12:26AM

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