Re: Derbi porting

Dirty30 Dillon /
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> Alan Jackson Wrote:

> -------------------------------------------------------

> my moby cylinders are 41.8 stroke. and i cant get them to run with the

> longer stroke crank

>

> unless i could stretch the cylinder.

>

> if i jack up the cylinder to get deck height correct the ports are all

> too high.

>

> peak rpm at 12k which isnt what i want. i was hoping your derboi was

> 43mm stroke.

>

> i know puchs are 43 mm stroke but stud spacing is way out. studs are

> outside the barrel. i might have to get creative and weld some alloy

> tubes etc

Yeah, Moby's aren't very simple for a swap. Although if you're already at 43mm (why, I guess we'll never know), there are a plethora of different cylinders that work great with that stroke in the scoot world. You'd be better off switching to an AV10, honestly.

That said, Derbi PP/PR motors are all 43mm stroke, hence why they fit Puch cylinders on them no problem. Although this doesn't really answer your stud spacing (Moby's have a rectangle, vs. a square pattern).

If you had your stock crank you could try to find yourself one of these or one of these top ends. They are the same stud spacing and stroke. In the end, you still need to figure out how to make the motor swing on the head, with either option.

This single post is part of a larger thread. Start from the top or view this post in context.
Subject Written By Posted
  Derbi portingTopic by: Wolf Wizard Wolf Wizard 08/24/21 09:08PM
  Re: Derbi portingRe: * wormdirt * * wormdirt * 08/24/21 10:47PM
  Re: Derbi portingRe: Wolf Wizard Wolf Wizard 08/25/21 01:16AM
  Re: Derbi portingRe: * wormdirt * * wormdirt * 08/25/21 01:24AM
  Re: Derbi portingRe: EH FCC of the QCB EH FCC of the QCB 08/24/21 10:54PM
  Re: Derbi portingRe: Wolf Wizard Wolf Wizard 08/25/21 01:18AM
  Re: Derbi portingRe: Wolf Wizard Wolf Wizard 08/25/21 01:15AM
  Re: Derbi portingRe: Wolf Wizard Wolf Wizard 08/25/21 10:19PM
  Re: Derbi portingRe: * wormdirt * * wormdirt * 08/25/21 10:42PM
  Re: Derbi portingRe: Wolf Wizard Wolf Wizard 08/25/21 11:19PM
  Re: Derbi portingRe: * wormdirt * * wormdirt * 08/25/21 11:24PM
  Re: Derbi portingRe: pat splat pat splat 08/26/21 02:18PM
  Re: Derbi portingRe: * wormdirt * * wormdirt * 08/26/21 03:57PM
  Re: Derbi portingRe: Alan Jackson Alan Jackson 08/26/21 04:43PM
  Re: Derbi portingRe: Wolf Wizard Wolf Wizard 08/26/21 11:58PM
  Re: Derbi portingRe: * wormdirt * * wormdirt * 08/27/21 12:13AM
  Re: Derbi portingRe: Alan Jackson Alan Jackson 08/27/21 02:18PM
  Re: Derbi portingRe: EH FCC of the QCB EH FCC of the QCB 08/28/21 04:20PM
  Re: Derbi portingRe: Dirty30 Dillon Dirty30 Dillon 09/02/21 02:00PM
  Re: Derbi portingRe: Wolf Wizard Wolf Wizard 08/27/21 01:20AM
  Re: Derbi portingRe: Wolf Wizard Wolf Wizard 08/27/21 10:26PM
  Re: Derbi portingRe: Wolf Wizard Wolf Wizard 08/29/21 01:10AM
  Re: Derbi portingRe: * wormdirt * * wormdirt * 08/29/21 01:27AM
  Re: Derbi portingRe: EH FCC of the QCB EH FCC of the QCB 08/29/21 09:28AM
  Re: Derbi portingRe: Wolf Wizard Wolf Wizard 08/29/21 09:57AM
  Re: Derbi portingRe: EH FCC of the QCB EH FCC of the QCB 08/29/21 12:24PM
  Re: Derbi portingRe: Wolf Wizard Wolf Wizard 08/29/21 02:05AM
  Re: Derbi portingRe: Emil Kniemel Emil Kniemel 09/02/21 12:16PM
  Re: Derbi portingRe: Wolf Wizard Wolf Wizard 09/21/21 07:45PM
  Re: Derbi portingRe: EH FCC of the QCB EH FCC of the QCB 09/21/21 08:50PM
  Re: Derbi portingRe: Jose Castanon Jose Castanon 09/21/21 09:10PM
  Re: Derbi portingRe: Wolf Wizard Wolf Wizard 09/22/21 02:17AM
  Re: Derbi portingRe: Wolf Wizard Wolf Wizard 09/26/21 10:39PM
  Re: Derbi portingRe: * wormdirt * * wormdirt * 09/26/21 11:24PM
  Re: Derbi portingRe: - Joe - - Joe - 09/27/21 09:16AM
  Re: Derbi portingRe: Wolf Wizard Wolf Wizard 09/27/21 12:01AM
  Re: Derbi portingRe: Wolf Wizard Wolf Wizard 09/27/21 01:02AM
  Re: Derbi portingRe: * wormdirt * * wormdirt * 09/27/21 01:19AM
  Re: Derbi portingRe: Wolf Wizard Wolf Wizard 09/27/21 01:36AM
  Re: Derbi portingRe: * wormdirt * * wormdirt * 09/27/21 01:39AM
  Re: Derbi portingRe: Wolf Wizard Wolf Wizard 09/27/21 01:46AM
  Re: Derbi portingRe: MPB Andyrew MPB Andyrew 09/27/21 09:53AM
  Re: Derbi portingRe: EH FCC of the QCB EH FCC of the QCB 09/29/21 06:18AM
  Re: Derbi portingRe: Jacob Fulton Jacob Fulton 09/27/21 10:24AM
  Re: Derbi portingRe: Wolf Wizard Wolf Wizard 09/27/21 12:58PM
  Re: Derbi portingRe: Graham Motzing Graham Motzing 09/28/21 10:46AM
  Re: Derbi portingRe: Wolf Wizard Wolf Wizard 09/27/21 02:06PM
  Re: Derbi portingRe: Wolf Wizard Wolf Wizard 09/28/21 12:54AM
  Re: Derbi portingRe: pat splat pat splat 09/28/21 05:07AM
  Re: Derbi portingRe: Wolf Wizard Wolf Wizard 09/28/21 09:01AM
  Re: Derbi portingRe: pat splat pat splat 09/29/21 12:09AM
  Re: Derbi portingRe: Wolf Wizard Wolf Wizard 09/28/21 10:53AM
  Re: Derbi portingRe: Wolf Wizard Wolf Wizard 10/08/21 11:33PM
  Re: Derbi portingRe: Wolf Wizard Wolf Wizard 10/09/21 01:24AM
  Re: Derbi portingRe: Totally normal JBOT Totally normal JBOT 10/09/21 12:25PM
  Re: Derbi portingRe: Wolf Wizard Wolf Wizard 10/09/21 01:07PM
  Re: Derbi portingRe: Totally normal JBOT Totally normal JBOT 10/09/21 01:18PM
  Re: Derbi portingRe: Totally normal JBOT Totally normal JBOT 10/09/21 01:22PM
  Re: Derbi portingRe: Wolf Wizard Wolf Wizard 10/09/21 06:21PM
  Re: Derbi portingRe: Totally normal JBOT Totally normal JBOT 10/09/21 08:43PM

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