Re: sachs prima g3 build help

Graham Motzing /

oh boy, yeah, sachs are a fun lot. i've still got my 2BX and i'm trying to decide whether to put it together and sell it before it explodes, or go through it and fix everything thats prone to breakage.

i've throughly trashed (as in, i dont think there is anything on it i haven't broken yet) my 1C, and i've written quite a bit about my trials and tribulations on various posts, but i can lay it down real quick for you, what you're in store for.

1st: your chain is going to rub, the motor mounts are too soft and when you put the extra power to the engine, the whole motor will twist and the chain will hit the case

2- The vibration of the rubbing chain will rattle out every single nut, bolt, and screw

3- the clutch will come loose because there is no positive engagement on the shaft, when you slow down (engine braking) it spins the nut loose. The heavier the bike, the worse this is, a G3 will do it almost instantly.

4- once you fix the clutch spinning loose problem, the tabs on the friction pads will get chewed up and break.

5- at some point you're going to break the coaster brake from doing skiddies drunk.

I'm working on making some replacement high durometer urethane motor mounts to prevent problems 1 and 2. I've also come up with a solution to problems 3 and 4, but haven't had a chance to prototype it yet. I'll probably do the 1/C first and if it works adapt it to the 2B... its going to be fairly expensive however, so i'm not sure if i'm going to go through with it, because all of you are cheap bastards...

Gearing up, by putting a tiny sprocket on the back, makes a huge difference on the vibration, but then you loose all your bottom end, and makes your clutch explode faster.

The manual motor isn't the solution to all the problems of the world that people trump it up to be. Mine came from a friend of Roald's in the netherlands, who got sick of replacing clutches.

The reedvalve athena is a sick bastard of a kit, it wrecks everything attached to it. If people were porting them correctly and putting them on E-5o's they'd be blowing them up, too. Buying a motor with more gears isn't going to solve the problem. Graham French took the two speed off his black G3 after about a season, I would assume because he got sick of fixing it, not much feedback comes out of that scene, so who knows, but it would be interesting to know what happened.

Subject Written By Posted
  sachs prima g3 build helpTopic by: nick nick 01/12/10 06:13PM
  Re: sachs prima g3 build helpRe: reynold reynold 01/12/10 06:35PM
  Re: sachs prima g3 build helpRe: nick nick 01/12/10 06:42PM
  Re: sachs prima g3 build helpRe: Tate Tate 01/12/10 10:04PM
  Re: sachs prima g3 build helpRe: Mike Bartell Mike Bartell 01/12/10 10:10PM
  Re: sachs prima g3 build helpRe: Mordecai Mordecai 01/13/10 01:47PM
  Re: sachs prima g3 build helpRe: Mike Bartell Mike Bartell 01/13/10 03:09PM
  Re: sachs prima g3 build helpRe: Mordecai Mordecai 01/13/10 03:16PM
  Re: sachs prima g3 build helpRe: nerdzilla in the north of he south nerdzilla in the north of he south 01/13/10 06:29PM
  Re: sachs prima g3 build helpRe: campeona del mundo campeona del mundo 01/13/10 11:00PM
  Re: sachs prima g3 build helpRe: Mordecai Mordecai 01/13/10 11:30PM
  Re: sachs prima g3 build helpRe: ) Cupermcnewbster ( ) Cupermcnewbster ( 01/13/10 11:44PM
  Re: sachs prima g3 build helpRe: campeona del mundo campeona del mundo 01/14/10 12:12AM
  Re: sachs prima g3 build helpRe: nick nick 01/14/10 02:55AM
  Re: sachs prima g3 build helpRe: Graham Motzing Graham Motzing 01/14/10 12:21PM
  Re: sachs prima g3 build helpRe: Mike Bartell Mike Bartell 01/14/10 02:15PM
  Re: sachs prima g3 build helpRe: Organ Robbin' Organ Robbin' 01/14/10 02:23PM
  Re: sachs prima g3 build helpRe: nick nick 01/14/10 03:26PM
  Re: sachs prima g3 build helpRe: campeona del mundo campeona del mundo 01/14/10 06:03PM
  Re: sachs prima g3 build helpRe: nerdzilla in the north of he south nerdzilla in the north of he south 01/15/10 02:21PM
  Re: sachs prima g3 build helpRe: Graham Motzing Graham Motzing 01/15/10 03:38PM
  Re: sachs prima g3 build helpRe: nick nick 01/15/10 09:53PM
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