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Mikekx65 · 10-28-2007, 06:56 PM

My new toy is a racing lawnmower.

Started out as a 10hp riding tractor, tore everything off but the basics. Now it has a 18hp v twin motor (no gov)

We changed the front pully from a 3" to a 6" and the rear pully from a 4" to a 3". It does ~25 mph (thats what the gps said) Just another thing to get myself hurt on.

Going to build new exhaust and wheelie bar tomarrow. (My dad rolled it over today trying to do wheelies)
shes a beast ill get pics tomarrow.

MOCRAWLER · 10-28-2007, 07:03 PM

put the blade back on it, and run yourself over OK:-P

Mikekx65 · 10-28-2007, 07:25 PM

The deck is long gone.

'83 chevy · 10-28-2007, 07:36 PM

i'v started building my new racing mower. I'm changing her from a standard type tranny, to a chain driven set up. Im running a 1:2.5 ratio to the tranny, and then a 2:1 on the chain side of the tranny to the wheels. With the 5 speed I'm going to be running, speeds are expected to be in the low to middle 40's. Only thing that sucks is finding replacement chain drive tranny's, I seem to always blow 5th gear in them(did it twice on my first mower). You still running the transaxle?

MOCRAWLER · 10-28-2007, 07:36 PM

I've got one i'll send you.

Mikekx65 · 10-28-2007, 07:46 PM

I've actually got a hydrostatic trans. The further you push the lever foward the faster it goes,and the same for reverse. So the transaxle should outlast the motor. The only thing im worried about is the no gov part. How much can a motor handle before it tears itself apart with no gov?

cammok5 · 10-28-2007, 07:49 PM

ive wanted to build one ever since i saw these. just cant find a cheap mower

http://www.southernmonstermowers.com/ wach the vids

'83 chevy · 10-28-2007, 07:50 PM

Quote:

Originally Posted by Mikekx65

I've actually got a hydrostatic trans. The further you push the lever foward the faster it goes,and the same for reverse. So the transaxle should outlast the motor. The only thing im worried about is the no gov part. How much can a motor handle before it tears itself apart with no gov?

If its a hydrostatic the tranny wont last very long turning twice the rpm it was designed to, you'll over heat the gear pump and it will eventually fail. If you want to get real crazy with it like i am, put a go-kart axle in it and flip the front axle over, it lowers the mower about 5" really easily. Nothing to wear out, but they are harder to set up.
As for the motor, you probably don't want to push it too hard. Just listen to it, if she sounds like she's reving to high, let off a little.

hers my old mower

thatguy · 10-28-2007, 11:16 PM

the cam tends to snap before the motor spins fast enough to come apart.

Mikekx65 · 10-29-2007, 05:10 AM

Well the tractor is like brand new. the first owner just ran it till she blew. Tore the old motor apart and it looked like a bomb went off in it. the axles and everything else if fine though only has 50hrs on it. I might try the go cart axles thing when this one goes,we still have a limited slip axle we never used for our gocart project.

10-28-2007, 06:56 PM	#1
Mikekx65 Rock Crawler Join Date: Apr 2007 Location: LaSalle Posts: 819	My new toy My new toy is a racing lawnmower. Started out as a 10hp riding tractor, tore everything off but the basics. Now it has a 18hp v twin motor (no gov) We changed the front pully from a 3" to a 6" and the rear pully from a 4" to a 3". It does ~25 mph (thats what the gps said) Just another thing to get myself hurt on. Going to build new exhaust and wheelie bar tomarrow. (My dad rolled it over today trying to do wheelies) shes a beast ill get pics tomarrow. Last edited by Mikekx65; 10-28-2007 at 07:24 PM.

10-28-2007, 07:03 PM	#2
MOCRAWLER I wanna be Dave Join Date: Jun 2005 Location: The bunker Posts: 3,767	put the blade back on it, and run yourself over OK:-P

10-28-2007, 07:25 PM	#3
Mikekx65 Rock Crawler Join Date: Apr 2007 Location: LaSalle Posts: 819	The deck is long gone.

10-28-2007, 07:36 PM	#4
'83 chevy Rock Crawler Join Date: Feb 2006 Location: Easthampton Posts: 747	i'v started building my new racing mower. I'm changing her from a standard type tranny, to a chain driven set up. Im running a 1:2.5 ratio to the tranny, and then a 2:1 on the chain side of the tranny to the wheels. With the 5 speed I'm going to be running, speeds are expected to be in the low to middle 40's. Only thing that sucks is finding replacement chain drive tranny's, I seem to always blow 5th gear in them(did it twice on my first mower). You still running the transaxle?

10-28-2007, 07:46 PM	#6
Mikekx65 Rock Crawler Join Date: Apr 2007 Location: LaSalle Posts: 819	I've actually got a hydrostatic trans. The further you push the lever foward the faster it goes,and the same for reverse. So the transaxle should outlast the motor. The only thing im worried about is the no gov part. How much can a motor handle before it tears itself apart with no gov?

10-28-2007, 07:49 PM	#7
cammok5 Rock Crawler Join Date: Aug 2006 Location: nc Posts: 867	ive wanted to build one ever since i saw these. just cant find a cheap mower http://www.southernmonstermowers.com/ wach the vids

10-28-2007, 11:16 PM	#9
thatguy Quarry Creeper Join Date: Jul 2005 Location: pleasant ridge Posts: 317	the cam tends to snap before the motor spins fast enough to come apart.

10-29-2007, 05:10 AM	#10
Mikekx65 Rock Crawler Join Date: Apr 2007 Location: LaSalle Posts: 819	Well the tractor is like brand new. the first owner just ran it till she blew. Tore the old motor apart and it looked like a bomb went off in it. the axles and everything else if fine though only has 50hrs on it. I might try the go cart axles thing when this one goes,we still have a limited slip axle we never used for our gocart project.

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