Archive through August 25, 2012

[mhomrighausen]

Ryan M. We need to get that little 86 ready for a Plow Day this fall. Janey will love plowing with that little fella. Of course we'll have to borrow an 8 inch plow from someone.

 

[tsimpson]

Ron, I just went out and had a real close look at the bushing, I can't see a slot. It's located right at the left end of the shaft inside of the frame, the cotter key goes through it, maybe it's painted over. I'm going try what you suggested, soak it with penetrating oil and try to get it loose.

 

[rvanmersbergen]

Ken, thanks for the formula I have cub loboy with 20 in blade and rpm of 2500 makes for low tip speed approx. 13,000 so if I increase/decrease pulley size {X} % does that change rpm by same % ?

 

[aaytay]

Denny-
Thanks. No those are a nearly new set of 8.50 Firestones we just found. They still had some of the "bumps" on the tread! I think I got them on "right" because my daughter was helping.

Jeff B-
Not missing a lug, just one lug bolt that is rusty...

 

[kfreeman]

Ray,

Yes, a smaller pulley (measured by diameter or circumference) on the deck will speed up the blade tip speed by the same percentage.

There are other factors to be considered, as well. A smaller pulley makes the spindles turn faster. Can they handle the increase in speed? A smaller pulley will require a shorter v-belt. About 1/2 the change in circumference. A smaller pulley will have less contact area between the pulley and the belt. This will reduce the maximum power that can be transferred to the spindle, therefore, it may be more prone to slipping under load. The spindle drive belt will also have to run faster. Also, running the deck at higher RPM's will require more HP to turn the deck under no load conditions. Fuel consumption will increase. Blade balance or spindle play may become more critical. The blades will have more momentum when encountering heavier grass, brush, rocks, sticks, pine cones, walnuts, etc.

It may be advisable to try incremental changes in speed instead of just jumping to a 45% change in speed.

 

[dfrisk]

ART - Nice find on the 23-8.50's. Wish I could find a good set. I'm trying to make the 70 almost a twin to the 72 and Those will be the hardest thing to find. I remember when I bought the pair for the 72, there were only THREE left in the F'stone warehouse in Chicago back then. Firestone made at least one, maybe two more runs of them. Wish Firestone would let Miller run those molds too.

 

[pbell]

Art,
I was going to ask if your daughter put the tires/wheels on her tractor, but thought I would be nice and not bring up your tire mounting skills, but since you did.......

 

[kmcconaughey]

Art, Katie's 100 looks great with the new tires! Hopefully she wont roll the bead again.

Chuck, nice job on the exhaust repair.

Kirk L., WELCOME!

That's a nice clean 102.

 

[dfrisk]

ART - I take it there wasn't an inner tube in that 6-12 turf tire. Did you put tubes in the 'Stones?

Even though the tires may be marked tubeless, I thought IH was tubing up all the tires on CC's back then.

 

[kmcconaughey]

Denny, I believe those were 23x8.5-12 turfs.