my minichopper

Meaningful discussion outside of the potato gun realm. Projects, theories, current events. Non-productive discussion will be locked.
User avatar
schmanman
Staff Sergeant 2
Staff Sergeant 2
Posts: 1685
Joined: Sat Mar 25, 2006 12:28 pm
Location: Michigan,U.S.A
Contact:

Fri Mar 09, 2007 5:31 pm

I built this for my best friend. not a single sent spent.

It, believe it or not, goes 60.

It has a speedometer.

the frame is from the 70's-80's

totally custom, uses a dirtbike front end, has a 4 hp kohler probably pushing 6 hp.

I'm giving it to him because he lives in a subdivision near me, and he can ride it to my house this summer, and hey, since I have a dirtbike, I dont really have a use for this sucker.

I got the engine (from 1970-somthing) from my grandpa, who had it in a cabinet in his garage, with the factory plastic wrap still on it.

put gas and oil in, and it ran first pull.

I have been assembling it, and fabricating in my spare time, every one and a while, in preparation for this spring, when we will take it to his house. I did the upholstery, too.

the clutch, which I accidentally broke the drum off, (centrifugal clutch), was professionally welded by one of my mom's friends, who runs a welding shop.

had other stuff, because behind my barn, i have a little motor vehicle junkyard of my own.

me and my friend know someone who runs a car customization shop, and he's gonna paint and bondo the tins (tank, fenders, etc.) for us.

anyway, here's the pics.

click the pictures to view full size


Image

Image

Image

Image

Image

Image

this is how I got it in the first place:

last summer, I rode a bike my other friend had put an electric scooter motor on, and it was fun, so Immediately started looking for a frame i could build up.

well, about three days later, i turned this up.

it had almost everything, but a shorter pair of forks and different front tire, no engine, clutch, or handlebars.

so I got the bars form a salvage yard for $10, after buying the frame for $60.

I got the clutch for $25 new.

then, after a summer of riding, a shaft inside this Little gearbox that was on there snapped, and the gears seized up, and then rounded off.

I pushed it behind the barn, and put it under a tarp in late summer, after receiving my dirtbike.

so, a couple weeks ago, I pushed it back in, and flipped the engine around, flipped the air filter around to make it fit, replaced the spark plug, and re did the chain, and rear break, etc.

now I'm giving it away. :D
Last edited by schmanman on Fri Mar 09, 2007 5:43 pm, edited 1 time in total.
Persistence is a measure of faith in yourself
User avatar
pyromaniac
Corporal 4
Corporal 4
Posts: 805
Joined: Tue Feb 27, 2007 7:18 pm
Location: MO

Fri Mar 09, 2007 5:42 pm

Freakin sweat! now all you goto do is mount a spud gun on teh handle bars. :D
User avatar
schmanman
Staff Sergeant 2
Staff Sergeant 2
Posts: 1685
Joined: Sat Mar 25, 2006 12:28 pm
Location: Michigan,U.S.A
Contact:

Fri Mar 09, 2007 5:45 pm

or the rear fender.

eat taters, fool!

lol. no, that would be ugly.

I'm gonna add an air horn off a peterbilt sometime this summer.
Persistence is a measure of faith in yourself
User avatar
chaos
Sergeant 3
Sergeant 3
Posts: 1205
Joined: Wed Jan 17, 2007 8:31 am

Fri Mar 09, 2007 6:13 pm

that thing is freaking kewl
but i doubt thats pushing 6hp, probably around 3 - 4 is more likely unless you have undergone mods.., our go kart engine was 6 1/2 stock and is now pushing probably 15 - 15 1/2hp but anyways that thing is kewl man that would be fun as to ride.

peace
chaos
User avatar
schmanman
Staff Sergeant 2
Staff Sergeant 2
Posts: 1685
Joined: Sat Mar 25, 2006 12:28 pm
Location: Michigan,U.S.A
Contact:

Fri Mar 09, 2007 6:16 pm

thanks! :D

well, my dirtbike is more fun than this thing, it is pushing 25 hp, and goes 70-75 mph, it is street legal, and is lots of fun off road!

on this minibike:
well, the exhaust port is enlarged (bored out with a mill), it has increased compression, and runs really well!
Persistence is a measure of faith in yourself
SpudBlaster15
First Sergeant 3
First Sergeant 3
Seychelles
Posts: 2400
Joined: Wed Oct 18, 2006 11:12 pm
Has thanked: 2 times
Been thanked: 10 times

Fri Mar 09, 2007 7:09 pm

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Cras nec placerat erat. Vivamus dapibus egestas nunc, at eleifend neque. Suspendisse potenti. Sed dictum lacus eu nisl pretium vehicula. Ut faucibus hendrerit nisi. Integer ultricies orci eu ultrices malesuada. Fusce id mauris risus. Suspendisse finibus ligula et nisl rutrum efficitur. Vestibulum posuere erat pellentesque ornare venenatis. Integer commodo fermentum tortor in pharetra. Proin scelerisque consectetur posuere. Vestibulum molestie augue ac nibh feugiat scelerisque. Sed aliquet a nunc in mattis.
Last edited by SpudBlaster15 on Wed Jul 14, 2021 1:29 pm, edited 2 times in total.
User avatar
schmanman
Staff Sergeant 2
Staff Sergeant 2
Posts: 1685
Joined: Sat Mar 25, 2006 12:28 pm
Location: Michigan,U.S.A
Contact:

Fri Mar 09, 2007 7:13 pm

thanks!

the engine is all cast iron, and has a bunch of torque.

(not as much as a dirtbike, though. duh!)


the thing can spin at 4000 rpm, and takes off relatively quick for a centrifugal clutch.

it is actually capable of a burnout. :D
although it ruins the tire, which is very soft, real quick. :D
Persistence is a measure of faith in yourself
User avatar
WOW!!
Corporal 4
Corporal 4
Posts: 891
Joined: Thu Mar 16, 2006 9:47 pm
Location: New jersey

Fri Mar 09, 2007 7:51 pm

I <3 you.



But not in a gay way.
User avatar
jrrdw
Moderator
Moderator
United States of America
Posts: 6569
Joined: Wed Nov 16, 2005 5:11 pm
Location: Maryland
Has thanked: 39 times
Been thanked: 22 times
Contact:

Donating Members

Fri Mar 09, 2007 7:52 pm

Nice job! I was wondering what you where going to do with that engine, we talked about it allmost like a year ago. Theres not many of those 4hp's around anymore. Good job on rakeing the front end, does it ride balanced?
User avatar
schmanman
Staff Sergeant 2
Staff Sergeant 2
Posts: 1685
Joined: Sat Mar 25, 2006 12:28 pm
Location: Michigan,U.S.A
Contact:

Fri Mar 09, 2007 7:58 pm

sure does!
yeah, kohlers are really nice small engines, from what I've heard and experienced.

rides real nice, and is strong, chassis-wise. power wise too.

yep, the engine is getting used again.

was that really a year ago?..... yeah, it was! I started looking for a frame & engine last winter!.... wow.
Persistence is a measure of faith in yourself
User avatar
Deko
Specialist
Specialist
Posts: 190
Joined: Fri Sep 29, 2006 3:22 pm

Fri Mar 09, 2007 9:31 pm

sweet, that thing is awesome im impressed :D lol
User avatar
schmanman
Staff Sergeant 2
Staff Sergeant 2
Posts: 1685
Joined: Sat Mar 25, 2006 12:28 pm
Location: Michigan,U.S.A
Contact:

Fri Mar 09, 2007 9:33 pm

thanks!!!!!
Persistence is a measure of faith in yourself
User avatar
chaos
Sergeant 3
Sergeant 3
Posts: 1205
Joined: Wed Jan 17, 2007 8:31 am

Fri Mar 09, 2007 10:23 pm

thing can spin at 4000 rpm, and takes off relatively quick for a centrifugal clutch.
yer our honda can get to about 15hp 7000rpm on full load on the dyno :lol: i'll get pics on as soon as the engine is rebuilt its done probably 20000km without a rebuild lol yer so ill get some pics up when its done

peace
User avatar
frankrede
Sergeant Major 2
Sergeant Major 2
Posts: 3220
Joined: Thu Jul 20, 2006 9:47 pm
Has thanked: 1 time
Been thanked: 1 time

Fri Mar 09, 2007 11:32 pm

Dam thats cool, makes me want to build a mini bike.
Current project: Afghanistan deployment
User avatar
schmanman
Staff Sergeant 2
Staff Sergeant 2
Posts: 1685
Joined: Sat Mar 25, 2006 12:28 pm
Location: Michigan,U.S.A
Contact:

Sat Mar 10, 2007 7:40 am

I'm Glad you guys like it.
it's pretty fun to mess around n, going up and down our dirt road and the surrounding ones (are "block" is 7 miles of dirt roads, surrounded by more branching off), and it actually does pretty good in my yard.

chaos, why dont you just make another thread? :D

sounds really cool.
Persistence is a measure of faith in yourself
Post Reply