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Old 11-10-2018, 09:21 AM
SirZylinder SirZylinder is offline
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Default Gear ratio for a GCV160 Honda go-kart build

I am new to building go-karts and this is just a fun DIY project which
I am putting together with a friend. We will convert a GCV160 into a horizontal drive (I know buying a real engine makes more sense but it is for screwing around a bit ) but I was faced with a question.
Which gear ratio should I choose?
I won`t be using slicks more like tires with some tread and a diameter of 25cm to 30cm.
This is the data sheet for the motor: http://www.honda-engines-eu.com/docu...5858/TS_GCV160
The base for the kart will be a modified and used chassis of something like this (just an example/around 44kg stock):
https://gokart-profi.de/BERG-Gokart-...8aAh3VEALw_wcB

I will expect an empty weight of around 60-65kg

If you have any suggestions even if there are elemental flaws in my planning I would be very happy for any suggestions and please be gentle I am a newbie
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Old 11-10-2018, 10:52 AM
karl karl is offline
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Luckly the vertical version has an oil dipper cast on the rod, to keep the part # the same between the motors.

Checking the oil will be almost impossible. And say goodbye to the governer. A custom intake manifold will be required.

As far as gear ratio , your links trash, and we yanks dont appreciate your metric nonsense.

Its just an industrial motor (that will have no gov if it ever runs) on a kart.
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Old 11-10-2018, 12:37 PM
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well karl, then welcome to the real world!
metric rules.. (simple fact: inches are defined as 25.4 mm nowadays)


Anywhoo..

converting a vertical shaft engine when a horizontal shaft engine can be had for dirt cheap..
IDK.. but go ahead (many attempts around failed so far though.. so be prepared!)

gearing is essentially not interesting as of yet..
but if you dial in towards 6:1 you'll be fine with a Berg style pedal cart

Ich weiss, die Idioten verkaufen den Scheiss als Go kart.. SIND trotzdem keine!
Tretautos sind eben nur Tretautos und das gilt auch für Berg und Dino und so..
Auch hier: such Dir lieber was anderes.

In the end, wheelsize is also an important factor of gear reduction!
So you can't just say it weighs X therefor the gearing must by Y.
when in fact the chain ratio is NOT the overall ratio,
overall ratio includes wheel diameters.

if you wanna play around with numbers.. check app.kartcalc.net
(use your phone since it won't run on desktops)
use quick calc and punch in some numbers to see if it throws a warning.

'sid
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Old 11-10-2018, 01:53 PM
karl karl is offline
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Quote:
Originally Posted by itsid View Post
well karl, then welcome to the real world!
metric rules.. (simple fact: inches are defined as 25.4 mm nowadays)
I know haha

I work with standard measurements everyday.

Every bolt on most mowers are SAE (except motors and hondas)

Anyway this is what happens if you buy a new gcv190 powered honda mower and never change the oil. Stuck valve, scoured cyl. Only made it 2 years. About a cup of oil in it lol
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Old 11-12-2018, 12:13 AM
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Quote:
Originally Posted by itsid View Post

Ich weiss, die Idioten verkaufen den Scheiss als Go kart.. SIND trotzdem keine!
Tretautos sind eben nur Tretautos und das gilt auch für Berg und Dino und so..
Auch hier: such Dir lieber was anderes.
Tell us how you really feel!!
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Old 11-21-2018, 02:34 PM
SirZylinder SirZylinder is offline
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Thank you all for your replies and I will look into all the recommendations you guys gave me!

Again this is just tinkering we are two retards fooling around and honestly, I expect that motor to blow up just when staring at it too hard with the mods we will make but meh.

Basically, I got the Idea from a meth head hill billy on Youtube who is kinda my spirit animal so yeah not really expecting any productive result out of this

Again many thanks go out you guys rock!
this project will drag along cause me and my friend have other stuff to do of course but I will post some progress if I remember to do so here!
Cheers!

Link of the meth head:
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Old 11-26-2018, 07:09 PM
karl karl is offline
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This motor is begging to be run on its side

Here is the dipper already cast into the rod

The holes to turn the intake are already in the head, tap m6x1.0 threads, bolt on carb

Fill her up till it spills out the dipstick tube (broken off on this block) buts its about the right level.

Make a mount.

Then give her a good rip.

Why has nobody done this yet

Thats all. Get to it haha.
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