Planet Minis

Danman2540 · 08-28-2009, 02:10 PM

Does anyone have any Honda specs or info that states the stock top speed for a Z50? Please email me or post if you have a owners manual or dealer brochure that states a top speed for any year of Z50. dsmith7797@aol.com

zwieblekopf · 08-28-2009, 02:16 PM

Speed calculator

Z · 08-28-2009, 02:29 PM

My 2003 Honda Monkey went 38mph brand new bone stock.

4 speed gearbox, 13/31 gearing

I'm guessing the older models depended on the gearbox and gearing.

Estimate 30-35mph for the US 3 speed models.

dirtbkr188 · 08-28-2009, 03:57 PM

Using the speed calculator above, and filling in the stock configurations, I came up with these numbers:

1975 Z50AK6 - 30MPH at 10K RPM
1985 Z50R - 35MPH at 10K RPM
1995 Z50R - 35MPH at 10K RPM

mexicanyella · 08-28-2009, 08:15 PM

I have a '71 Z50A-K2 hardtail that came stock with 12/35 gearing. With stock carb and exhaust on it it struggles to rev past 8000 rpm. I've seen it touch--briefly--8600-8800 rpm on a downhill, maybe with a tailwind, wide open. On the flat, wide open, it sits at 7500-8000. With a 4.00x8 tire run a little soft for bump absorption, that's less than 30 mph, but it can climb most of the road hills around here without shifting down with my large self on it.

I recently changed to 13/35 gearing and now it can top 30 on the flat but sometimes I have to shift down to 2nd gear on the big hills.

I haven't tested my son's Z50R yet but it feels like it's more willing to rev; not sure if I'm hitting 10K or not but it will definitely zing up higher than my old bike.

Z · 08-28-2009, 08:17 PM

A stock Z50 won't hit 10,000 rpms unless you are going down a very large hill.

CrawlerD · 08-28-2009, 10:11 PM

As the owner of -Ahem(coughs embarassingly) 6 Z's of various builds. Average is about 25 mph on my 6v-ers and about 30 on my 12v-ers. Not a one of them hits 10,000 rpms (and lives that is)

cdoublejj · 08-29-2009, 12:47 AM

i was wondering the same thing. guess i've come along way from 25mph added another 25mph with a lifan and now hopefully 60 something with my z155.

gixxer1 · 08-29-2009, 07:00 AM

my gsxr-1000 does about 180.

tmas · 08-29-2009, 07:59 AM

Didn't arlindsay "high speed record guy" get his stock z50 up to 40 something mph?
tmas

Dan_Lorenze · 08-29-2009, 08:43 AM

Quote:

Originally Posted by crawlerd

as the owner of -ahem(coughs embarassingly) 6 z's of various builds.

lol

arlindsay1992 · 08-29-2009, 10:00 AM

I hit 43 by changing gearing and stripping off extra weight from the bike. Motor was stock except for airbox modifications. GPS confirmed.

I got a 72cc motor to hit 55. It will do 50 on flat ground and 55 on a slight downhill.

CrawlerD · 08-29-2009, 10:54 AM

I believe you could get a stock Z to hit 60 MPH...

It would take a few things-
20 tooth front and 24 tooth rear!
Bonneville salt flats and 20 miles of track.
A push vehicle to get it up to at least 30.
A rider with a big brass set of B**** cause with 8 inch wheels in the salt you know its gonna get ugly!

doopsx3 · 08-29-2009, 10:56 AM

Quote:

Originally Posted by CrawlerD

I believe you could get a stock Z to hit 60 MPH...

It would take a few things-
Bonneville salt flats and 20 miles of track.
A push vehicle to get it up to at least 30.
A rider with a big brass set of B**** cause with 8 inch wheels in the salt you know its gonna get ugly!

and a cliff

toby57 · 08-29-2009, 01:05 PM

i have a stock 50cc 1978 gorilla that all i have added is a aftermarket muffler, 1-1/2" exhaust pipe and aftermarket air cleaner. my speedo is in KM but i have had it pegged at 60kph passing a car that said i was doing 43mph.

looking to add a lifan 125cc or 110cc international shift. should get up to 60mph.

told by biker friends that 17 of them would ride behind me so i don't get run over on the way to a bike night celebration. so i want just a little more speed beside 43.

any bad things to know about lifan engines. i got a 6v bike. told to use a regulator to keep all my stuff working. thinking about switching to 12v anyway.

arlindsay1992 · 08-29-2009, 01:17 PM

Quote:

Originally Posted by CrawlerD

I believe you could get a stock Z to hit 60 MPH...

I don't think so. Theoretically if you geared it that high it would go that fast, but a stock motor simply doesn't have the power. I have a well worked over 72cc motor, ported short rod Z50 head, performance exhaust, 20mm carb, fully portmatched, and it barely hits 55. It isn't like it tops out because of gearing, it just doesn't have the power to go faster.

CrawlerD · 08-29-2009, 03:34 PM

Quote:

Originally Posted by CrawlerD

I believe you could get a stock Z to hit 60 MPH...

It would take a few things-
20 tooth front and 24 tooth rear!
Bonneville salt flats and 20 miles of track.
A push vehicle to get it up to at least 30.
A rider with a big brass set of B**** cause with 8 inch wheels in the salt you know its gonna get ugly!

You didnt finish my quote. You can get anything to go fast its how you get there. Hence the push vehicle and 20 miles of track. Maybe a rocket too...

dirtbkr188 · 08-29-2009, 04:20 PM

Here's a file photo of "The Virginia Blur" practicing for his high-speed run...

firepower354 · 08-29-2009, 04:22 PM

9.8m/s/s

z50 chopper · 08-29-2009, 04:22 PM

^^^nice photoshop or did you use the paint program?

08-28-2009, 02:10 PM	#1 (permalink)
Danman2540 1st Gear Member Join Date: Jan 2007 Location: St Louis MO Posts: 210 My Mood:	Z50 stock top speed Does anyone have any Honda specs or info that states the stock top speed for a Z50? Please email me or post if you have a owners manual or dealer brochure that states a top speed for any year of Z50. dsmith7797@aol.com

08-28-2009, 02:16 PM	#2 (permalink)
zwieblekopf 2nd Gear Member Join Date: Mar 2009 Location: Mesa, AZ Posts: 649	Re: Z50 stock top speed Speed calculator

08-28-2009, 02:29 PM	#3 (permalink)
Z 5th Gear Member Join Date: Sep 2003 Location: KANSAS Posts: 8,540	Re: Z50 stock top speed My 2003 Honda Monkey went 38mph brand new bone stock. 4 speed gearbox, 13/31 gearing I'm guessing the older models depended on the gearbox and gearing. Estimate 30-35mph for the US 3 speed models.

08-28-2009, 03:57 PM	#4 (permalink)
dirtbkr188 3rd Gear Member Join Date: May 2004 Location: New Jersey Posts: 2,972	Re: Z50 stock top speed Using the speed calculator above, and filling in the stock configurations, I came up with these numbers: 1975 Z50AK6 - 30MPH at 10K RPM 1985 Z50R - 35MPH at 10K RPM 1995 Z50R - 35MPH at 10K RPM

08-28-2009, 08:15 PM	#5 (permalink)
mexicanyella El rey de los puntos Join Date: Aug 2008 Location: Troy, MO Posts: 984	Re: Z50 stock top speed I have a '71 Z50A-K2 hardtail that came stock with 12/35 gearing. With stock carb and exhaust on it it struggles to rev past 8000 rpm. I've seen it touch--briefly--8600-8800 rpm on a downhill, maybe with a tailwind, wide open. On the flat, wide open, it sits at 7500-8000. With a 4.00x8 tire run a little soft for bump absorption, that's less than 30 mph, but it can climb most of the road hills around here without shifting down with my large self on it. I recently changed to 13/35 gearing and now it can top 30 on the flat but sometimes I have to shift down to 2nd gear on the big hills. I haven't tested my son's Z50R yet but it feels like it's more willing to rev; not sure if I'm hitting 10K or not but it will definitely zing up higher than my old bike.

08-28-2009, 08:17 PM	#6 (permalink)
Z 5th Gear Member Join Date: Sep 2003 Location: KANSAS Posts: 8,540	Re: Z50 stock top speed A stock Z50 won't hit 10,000 rpms unless you are going down a very large hill.

08-28-2009, 10:11 PM	#7 (permalink)
CrawlerD 1st Gear Member Join Date: May 2008 Location: Sin City Posts: 645	Re: Z50 stock top speed As the owner of -Ahem(coughs embarassingly) 6 Z's of various builds. Average is about 25 mph on my 6v-ers and about 30 on my 12v-ers. Not a one of them hits 10,000 rpms (and lives that is)

08-29-2009, 12:47 AM	#8 (permalink)
cdoublejj 3rd Gear Member Join Date: Oct 2008 Location: St.Joe MO Posts: 1,368 My Mood:	Re: Z50 stock top speed i was wondering the same thing. guess i've come along way from 25mph added another 25mph with a lifan and now hopefully 60 something with my z155.

08-29-2009, 07:00 AM	#9 (permalink)
gixxer1 PM Newbie Join Date: Aug 2009 Location: massachusetts Posts: 14 My Mood:	Re: Z50 stock top speed my gsxr-1000 does about 180.

08-29-2009, 07:59 AM	#10 (permalink)
tmas ZB50 Jedi Join Date: Apr 2005 Location: Toronto Posts: 4,108	Re: Z50 stock top speed Didn't arlindsay "high speed record guy" get his stock z50 up to 40 something mph? tmas

08-29-2009, 10:00 AM	#12 (permalink)
arlindsay1992 "High Speed Record Guy" Join Date: Mar 2006 Location: Northern Virginia Posts: 4,369	Re: Z50 stock top speed I hit 43 by changing gearing and stripping off extra weight from the bike. Motor was stock except for airbox modifications. GPS confirmed. I got a 72cc motor to hit 55. It will do 50 on flat ground and 55 on a slight downhill.

08-29-2009, 10:54 AM	#13 (permalink)
CrawlerD 1st Gear Member Join Date: May 2008 Location: Sin City Posts: 645	Re: Z50 stock top speed I believe you could get a stock Z to hit 60 MPH... It would take a few things- 20 tooth front and 24 tooth rear! Bonneville salt flats and 20 miles of track. A push vehicle to get it up to at least 30. A rider with a big brass set of B**** cause with 8 inch wheels in the salt you know its gonna get ugly! Last edited by CrawlerD; 08-29-2009 at 12:52 PM.

08-29-2009, 01:05 PM	#15 (permalink)
toby57 PM Newbie Join Date: Jul 2009 Posts: 9	Re: Z50 stock top speed i have a stock 50cc 1978 gorilla that all i have added is a aftermarket muffler, 1-1/2" exhaust pipe and aftermarket air cleaner. my speedo is in KM but i have had it pegged at 60kph passing a car that said i was doing 43mph. looking to add a lifan 125cc or 110cc international shift. should get up to 60mph. told by biker friends that 17 of them would ride behind me so i don't get run over on the way to a bike night celebration. so i want just a little more speed beside 43. any bad things to know about lifan engines. i got a 6v bike. told to use a regulator to keep all my stuff working. thinking about switching to 12v anyway.

08-29-2009, 04:20 PM	#18 (permalink)
dirtbkr188 3rd Gear Member Join Date: May 2004 Location: New Jersey Posts: 2,972	Re: Z50 stock top speed Here's a file photo of "The Virginia Blur" practicing for his high-speed run...

08-29-2009, 04:22 PM	#19 (permalink)
firepower354 Advertiser Join Date: Oct 2006 Location: Flint MI Posts: 11,002 My Mood:	Re: Z50 stock top speed 9.8m/s/s __________________ 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.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)

08-29-2009, 04:22 PM	#20 (permalink)
z50 chopper 2nd Gear Member Join Date: Jun 2009 Location: Nanaimo, BC, Canada Posts: 504 My Mood:	Re: Z50 stock top speed ^^^nice photoshop or did you use the paint program?