ZA50 First Speed Gear

The other day was riding around on the moped when the transmission started making some clanking noise. Opened it up and saw that the first speed gear was cracked and missing a couple of teeth. I've been looking online for parts but can't seem to find them anywhere. The sites that do show them are sold out. If anyone would like to sell me one or let me know where I could buy one I'd be very grateful. Thank you!

Moped: 1979 Puch Maxi 2 automatic

Searching for: NOS puch ZA50 first speed gear - 70T

NOS-puch-za-1st-spd-gear-70T-2.jpg
NOS-puch-za-1st-spd-gear-70T-3.jpg
puchmaxi2firstgear.jpg

Re: ZA50 First Speed Gear

> Brian I Wrote:

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

> The other day was riding around on the moped when the transmission

> started making some clanking noise. Opened it up and saw that the first

> speed gear was cracked and missing a couple of teeth. I've been looking

> online for parts but can't seem to find them anywhere. The sites that do

> show them are sold out. If anyone would like to sell me one or let me

> know where I could buy one I'd be very grateful. Thank you!

>

> Moped: 1979 Puch Maxi 2 automatic

>

> Searching for: NOS puch ZA50 first speed gear - 70T

What’s that crazy looking toothed thing going around the inside of the gear?

Re: ZA50 First Speed Gear

Major bummer. I'd take the rest apart and check the center bearing as well just to be sure

Re: ZA50 First Speed Gear

john cervini /

Mach1Vmotors on Ebay has a bunch of nos puch parts listed. I believe there is a nos first gear available.

Re: ZA50 First Speed Gear

Probably Fred /

> john cervini Wrote:

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

> Mach1Vmotors on Ebay has a bunch of nos puch parts listed. I believe

> there is a nos first gear available.

They are the biggest rip off of anything I’ve ever seen, they charge seven dollars shipping for a m6 nut or washer

Re: ZA50 First Speed Gear

Um, why hasnt anyone mentioned the cause of this yet?? Shift pucks. Or rather lack of.

Re: ZA50 First Speed Gear

Facts ^

Re: ZA50 First Speed Gear

Re: ZA50 First Speed Gear

Got it THANKS!!!

Re: ZA50 First Speed Gear

> Brian I Wrote:

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

> Got it THANKS!!!

Not a problem

Re: ZA50 First Speed Gear

Take a hard look at the drive gear for that also. If it got roughed up when first gear failed, which kind of looks like in picture, it will just eat up a new gear. Hate to see good money thrown away.

Re: ZA50 First Speed Gear

Dirty30 Dillon /

> Aaron Goldman Wrote:

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

> What’s that crazy looking toothed thing going around the inside of the

> gear?

That's the mech that holds the springs for the one-way rollers. Because the gear cracked, it launched the cover and exposed the guts.

I'm going to say that tranny needs to be stripped down and de-fragged

Re: ZA50 First Speed Gear

> Dirty30 Dillon Wrote:

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

> > Aaron Goldman Wrote:

>

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

>

> > What’s that crazy looking toothed thing going around the inside of the

>

> > gear?

>

> That's the mech that holds the springs for the one-way rollers. Because

> the gear cracked, it launched the cover and exposed the guts.

>

> I'm going to say that tranny needs to be stripped down and de-fragged

I've worked on a bunch of Za50s and don't think I've ever seen underneath that cover, pretty funky!

Re: ZA50 First Speed Gear

> Aaron Goldman Wrote:

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

> > Dirty30 Dillon Wrote:

>

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

>

> > > Aaron Goldman Wrote:

>

> >

>

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

>

> >

>

> > > What’s that crazy looking toothed thing going around the inside of

> the

>

> >

>

> > > gear?

>

> >

>

> > That's the mech that holds the springs for the one-way rollers.

> Because

>

> > the gear cracked, it launched the cover and exposed the guts.

>

> >

>

> > I'm going to say that tranny needs to be stripped down and de-fragged

>

> I've worked on a bunch of Za50s and don't think I've ever seen

> underneath that cover, pretty funky!

Any ZA you get you need to open up the transmission and replace the shift pucks. 99% of the time they're disintegrated

Re: ZA50 First Speed Gear

sorry to raise this one from the dead but same problem - need one - any ideas? found one on ebay that has the correct part number but pic is from the wrong part and it is from Mach1Vmotors used so not surprised...help please

Re: ZA50 First Speed Gear

Eventually someone's gonna need to replicate these gears cause too many peeps don't know how to change the shift pucks that cause the damage

Re: ZA50 First Speed Gear

Probably Fred /

> live ɘvil Wrote:

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

> Eventually someone's gonna need to replicate these gears cause too many

> peeps don't know how to change the shift pucks that cause the damage

Even if they do know how change no one wants to take apart a stock original engine that otherwise seems to be running perfect.

I myself have been guilty of it on a stocker but never on a kitted bike. You’d be surprised on other damage and things you’d find like defective/smashed bearings from the factory when you first take apart a za50.

Shift dampener pieces unless large pieces break off at once don’t necessarily hurt the gears but the abrupt non-dampened shift is what hurts the gears and it’s almost hard to tell until the damage occurs but if somethings running good it’s just human nature to leave it alone.

Re: ZA50 First Speed Gear

Not sure if I should move this to the general discussion: I ended up finding a used one; however still dealing with a perplexing issue - as this particular gearbox was fully rebuilt (pucks, bearings, shims wt plastigauge, the works) and was shifting smooth as butter for the first 300miles or so; second gear is flipped, gearing is 19T front 35T rear and the bike is now running stuffy crank, a 65cc Metra kit with 15MM bing - pretty mild setup that should not have resulted in anything. Prior to the full rebuilt the bike came with a sheered off crank - literally - the half into the gearbox was detached from the engine half, was also previously opened by someone to look at the damage. All parts were visually inspected, reasembled with proper shimming, torque on nuts, etc. - so let's hear it - if it ain't the pucks - what do you think it was - invisible microfractures from when the crank event happened? Gearing too high? (edited)

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