Heymow - Lawnmower Racing Forum

Engine Help => Kohler Engines => Topic started by: BoNewCo on April 13, 2015, 05:52:40 pm

Title: Cent Clutch for Kohler 1 1/8" crank
Post by: BoNewCo on April 13, 2015, 05:52:40 pm

What are those running a 1 1/8" shaft vertical Kohler using for a centrifugal clutch. Bully isn't making them anymore & I really don't like the idea of it being under the mower in the dirt.

Title: Re: Cent Clutch for Kohler 1 1/8" crank
Post by: redline on April 13, 2015, 07:50:14 pm

If I recall, Zach Kerber makes one.

Title: Re: Cent Clutch for Kohler 1 1/8" crank
Post by: BoNewCo on April 13, 2015, 11:59:02 pm

Quote from: redline on April 13, 2015, 07:50:14 pm

If I recall, Zach Kerber makes one.
[/quote
Yes they look really nice but unfortunately they are almost as much as the owner paid for the mower. He's not a serious racer. Just built it with a Kohler because that is what the mower he had had in it.

Title: Re: Cent Clutch for Kohler 1 1/8" crank
Post by: cycloneracer on April 14, 2015, 01:04:45 am

if he is on that tight of budget run a belt clutch.   Especially if he is running a vertical shaft engine in the FXT class.

Or run a belt to his RAGB and use a 1" or a 3/4" bore clutch on the box.

He gave less than $700 for a FXT style mower???!!!!    I gotta see this thing!!!!!   I have $400 in tires on mine (not counting the 4 spares). 

Title: Re: Cent Clutch for Kohler 1 1/8" crank
Post by: BoNewCo on April 14, 2015, 01:15:48 pm

It's not a competitive FX. He already had the mower & paid a friend of mine to convert it to a "racer" for his kids. Stock engine & turf tires. It has a belt clutch but keeps burning up belts.

Title: Re: Cent Clutch for Kohler 1 1/8" crank
Post by: IADIRT51 on June 24, 2015, 05:19:48 pm

Have the PTO side of your crank turned down, and a key way machined in it, local shops wouldn't charge much for it.

Title: Re: Cent Clutch for Kohler 1 1/8" crank
Post by: cycloneracer on June 24, 2015, 07:49:22 pm

Quote from: IADIRT51 on June 24, 2015, 05:19:48 pm

Have the PTO side of your crank turned down, and a key way machined in it, local shops wouldn't charge much for it.

And your crank will snap.   Unless your running a stock engine.

Title: Re: Cent Clutch for Kohler 1 1/8" crank
Post by: IADIRT51 on June 25, 2015, 03:08:50 pm

.

Quote from: cycloneracer on June 24, 2015, 07:49:22 pm

And your crank will snap.   Unless your running a stock engine.

^ Add an engine plate and 3rd bearing support to the PTO shaft

Title: Re: Cent Clutch for Kohler 1 1/8" crank
Post by: mcollins on July 26, 2015, 09:00:34 pm

All my billet cranks are turned down to 1"??? Mine must be stock lol.  :woo:

Title: Re: Cent Clutch for Kohler 1 1/8" crank
Post by: cycloneracer on July 26, 2015, 10:24:32 pm

Quote from: mcollins on July 26, 2015, 09:00:34 pm

All my billet cranks are turned down to 1"??? Mine must be stock lol.  :woo:

Turn down a stock crank and it will snap. 

No need for a billet crank. 

Title: Re: Cent Clutch for Kohler 1 1/8" crank
Post by: mcollins on July 27, 2015, 03:10:26 pm

I must have missed the "stock" part of the question  :doh:my bad lol

Title: Re: Cent Clutch for Kohler 1 1/8" crank
Post by: westcoast racer on July 30, 2015, 02:45:22 pm

If he is burning up belts on a stock engine then there must be other issues.  It may not have enough tension, cheap belt or poor alignment.  It has been a long time since I burned up a belt and I can abuse it a lot.

Who's mower is it Bob?