Planet Minis

gav · 11-08-2008, 10:29 PM

hi ill ive read that there are some 50cc z50 motor that are 4 speeds just wondering what model they came out of and what there worth

mexicanyella · 11-08-2008, 10:55 PM

Don't believe we got any 4-speed 50s in the US, Z or otherwise. I think for us the 4-speeds were just CT70Hs, SL/CL/XL70s and later ATC70s, and C70 passports in some years.

I believe there were some 5-speed hi-revvin 50s in the UK market in some quasi-sport-moped thing called an SS50, which looked sort of like our CL70. There may have been 4-speed versions too. I've heard the 5-speed was a gear crunch waiting to happen and the 3 or 4 speeds were much stronger. But this is based on reading other people's build stories and experiences on the internet. My own experience is that there are a bunch of 3-speeds out there that still work, and every once in awhile you run across a 4-speed with manual clutch, and they're a little more sporting feeling and those motors cost more on Craigslist and Ebay.

moto234 · 11-08-2008, 11:20 PM

yea ive never heard of a 4speed z motor but that doesnt mean it doesnt exist since im new to this. but ther are the ct70h motors that are 4 speed and more desirable than regular 3 speed. i think they were only made for one or a few years so thers much less of them

gav · 11-09-2008, 12:22 AM

has anyone done a 4 speed conversion on a 3speed z50 at all

jigracing · 11-09-2008, 01:22 AM

I put a 4speed Icon50 motor in my 87Z. It has been in there for three years now with zero problems.

makotosun · 11-09-2008, 05:45 AM

never seen one but this thing looks cool!

Z · 11-09-2008, 06:27 AM

The Majority of the Honda Monkeys out of Japan after 1978 were 50cc 4 speed manual clutch engines and are virtually the same engine as the Z50.

Read up:

Honda Z50 & Monkey Bikes Original Models Gallery

I've converted all my Z50's to 4 speeds using JDM Honda Monkey gearboxes.

Ands1 · 11-09-2008, 04:00 PM

Here in the UK theres lots of 4 speed honda engines with Manual clutches, My 1993 z50j has a 4 speed box but the 1969 z50a, 1978 z50j & 1981 z50r all came with 3 speed semi auto. I used to have an SS50 & the 5 speed did crunch quickly due to the gearing being thinner to fit in the cases, the 4 speed was ok.

NiftyZ50 · 11-09-2008, 06:41 PM

The Z50AK2 makes a great bike for the conversion with the redundant rear foot brake-just convert the left steering tube perch to a clutch lever and your good to go. I have a cl70 scrambler in mine that's warmed up and it cruises at 45-55.

gav · 11-11-2008, 04:04 AM

Quote:

Originally Posted by Ands1

Here in the UK theres lots of 4 speed honda engines with Manual clutches, My 1993 z50j has a 4 speed box but the 1969 z50a, 1978 z50j & 1981 z50r all came with 3 speed semi auto. I used to have an SS50 & the 5 speed did crunch quickly due to the gearing being thinner to fit in the cases, the 4 speed was ok.

what are the 4 speed motors selling for over there

gav · 11-11-2008, 04:04 AM

Quote:

Originally Posted by Z

The Majority of the Honda Monkeys out of Japan after 1978 were 50cc 4 speed manual clutch engines and are virtually the same engine as the Z50.

Read up:

Honda Z50 & Monkey Bikes Original Models Gallery

I've converted all my Z50's to 4 speeds using JDM Honda Monkey gearboxes.

were your bikes 6v or 12v

Z · 11-11-2008, 07:54 AM

Quote:

Originally Posted by gav

were your bikes 6v or 12v

My bikes are 12V.

However, the 1978 to early 1990's monkeys were 6V and those gearboxes are readily available as well.

gav · 11-11-2008, 02:46 PM

whats it like to find 12v 4speed motors over there

gav · 11-11-2008, 02:47 PM

any contact info on where you got the parts from

tmas · 11-11-2008, 03:51 PM

Quote:

Originally Posted by gav

any contact info on where you got the parts from

I got my AB27 4 speed Honda trans for my ZB motor from Z.Check link below.
tmas

Honda50.com Motoshop Z, LLC Part Ordering Procedures and Information

gav · 11-11-2008, 03:56 PM

what are they worth

tmas · 11-11-2008, 03:58 PM

Quote:

Originally Posted by gav

what are they worth

Mine was used....paid over $200 plus shipping. Got it a while back.
tmas

tmas · 11-11-2008, 04:11 PM

Forgot to mention that I got the kickstarter shaft with it too.
tmas

firepower354 · 11-11-2008, 06:35 PM

Ratios?

tmas · 11-11-2008, 06:45 PM

Quote:

Originally Posted by firepower354

Ratios?

Gear Ratios:
1st 3.272
2nd 1.937
3rd 1.35
4th 1.043

http://www.planetminis.com/f58/sale-...12v-72426.html

11-08-2008, 10:29 PM	#1 (permalink)
gav 2nd Gear Member Join Date: Jan 2008 Location: sydney australia Posts: 394	z50 4speed?? hi ill ive read that there are some 50cc z50 motor that are 4 speeds just wondering what model they came out of and what there worth

11-08-2008, 10:55 PM	#2 (permalink)
mexicanyella El rey de los puntos Join Date: Aug 2008 Location: Troy, MO Posts: 976	Re: z50 4speed?? Don't believe we got any 4-speed 50s in the US, Z or otherwise. I think for us the 4-speeds were just CT70Hs, SL/CL/XL70s and later ATC70s, and C70 passports in some years. I believe there were some 5-speed hi-revvin 50s in the UK market in some quasi-sport-moped thing called an SS50, which looked sort of like our CL70. There may have been 4-speed versions too. I've heard the 5-speed was a gear crunch waiting to happen and the 3 or 4 speeds were much stronger. But this is based on reading other people's build stories and experiences on the internet. My own experience is that there are a bunch of 3-speeds out there that still work, and every once in awhile you run across a 4-speed with manual clutch, and they're a little more sporting feeling and those motors cost more on Craigslist and Ebay.

11-08-2008, 11:20 PM	#3 (permalink)
moto234 3rd Gear Member Join Date: Apr 2008 Location: CHICO CA Ukiah CA MENDO 707 Posts: 2,782	Re: z50 4speed?? yea ive never heard of a 4speed z motor but that doesnt mean it doesnt exist since im new to this. but ther are the ct70h motors that are 4 speed and more desirable than regular 3 speed. i think they were only made for one or a few years so thers much less of them

11-09-2008, 12:22 AM	#4 (permalink)
gav 2nd Gear Member Join Date: Jan 2008 Location: sydney australia Posts: 394	Re: z50 4speed?? has anyone done a 4 speed conversion on a 3speed z50 at all

11-09-2008, 01:22 AM	#5 (permalink)
jigracing Super Moderator Join Date: Jan 2004 Location: Hesperia, Ca Posts: 3,265 My Mood:	Re: z50 4speed?? I put a 4speed Icon50 motor in my 87Z. It has been in there for three years now with zero problems. __________________ Scott

11-09-2008, 05:45 AM	#6 (permalink)
makotosun 2nd Gear Member Join Date: Apr 2005 Location: Washington (southwest) Posts: 510 My Mood:	Re: z50 4speed?? never seen one but this thing looks cool!

11-09-2008, 06:27 AM	#7 (permalink)
Z 5th Gear Member Join Date: Sep 2003 Location: KANSAS Posts: 8,540	Re: z50 4speed?? The Majority of the Honda Monkeys out of Japan after 1978 were 50cc 4 speed manual clutch engines and are virtually the same engine as the Z50. Read up: Honda Z50 & Monkey Bikes Original Models Gallery I've converted all my Z50's to 4 speeds using JDM Honda Monkey gearboxes.

11-09-2008, 04:00 PM	#8 (permalink)
Ands1 PM Newbie Join Date: Nov 2008 Location: Manchester England Posts: 40	Re: z50 4speed?? Here in the UK theres lots of 4 speed honda engines with Manual clutches, My 1993 z50j has a 4 speed box but the 1969 z50a, 1978 z50j & 1981 z50r all came with 3 speed semi auto. I used to have an SS50 & the 5 speed did crunch quickly due to the gearing being thinner to fit in the cases, the 4 speed was ok.

11-09-2008, 06:41 PM	#9 (permalink)
NiftyZ50 PM Newbie Join Date: Oct 2008 Posts: 35	Re: z50 4speed?? The Z50AK2 makes a great bike for the conversion with the redundant rear foot brake-just convert the left steering tube perch to a clutch lever and your good to go. I have a cl70 scrambler in mine that's warmed up and it cruises at 45-55.

11-11-2008, 02:46 PM	#13 (permalink)
gav 2nd Gear Member Join Date: Jan 2008 Location: sydney australia Posts: 394	Re: z50 4speed?? whats it like to find 12v 4speed motors over there

11-11-2008, 02:47 PM	#14 (permalink)
gav 2nd Gear Member Join Date: Jan 2008 Location: sydney australia Posts: 394	Re: z50 4speed?? any contact info on where you got the parts from

11-11-2008, 03:56 PM	#16 (permalink)
gav 2nd Gear Member Join Date: Jan 2008 Location: sydney australia Posts: 394	Re: z50 4speed?? what are they worth

11-11-2008, 04:11 PM	#18 (permalink)
tmas ZB50 Jedi Join Date: Apr 2005 Location: Toronto Posts: 4,108	Re: z50 4speed?? Forgot to mention that I got the kickstarter shaft with it too. tmas Attached Thumbnails

11-11-2008, 06:35 PM	#19 (permalink)
firepower354 Advertiser Join Date: Oct 2006 Location: Flint MI Posts: 10,991 My Mood:	Re: z50 4speed?? Ratios? __________________ If it has my name on it I did it;) FirepowerMinis.com Custom FPM parts and engines. Parts and service for all makes. Honda Trail Bikes parts and accessories. Pitster/Piranha/Thumpstar bikes, parts, engines and accessories.

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