Jump to content

Unofficial Home of Old Simplicity & Allis-Chalmers Garden Tractors

bruker1

Blade Speed, zero turn vs conventional?

Recommended Posts

bruker1

The other day I mowed the inlaws yard with their Ferris zero turn with a 60" deck. The clipppings flew much further and the clippings were almost dust compared to my Prestige with the 50" deck. Do zero turns have a higher blade speed compared to conventional mowers?   

Share this post


Link to post
Share on other sites
MrSteele
16 hours ago, bruker1 said:

Do zero turns have a higher blade speed compared to conventional mowers?   

Depends on the manufacturer. At one time, a nationally known company sold their Zero turns with the advertisement of "fastest blades on the market". They were right, I checked. Has nothing to do with style of machine, just the size of the pulleys. A buddy of mine bought one of the advertised machines. Got rid of it kind of quickly because the bearings apparently did not hold up to the speed of the shafts and had to be replaced often. The company quit selling with that slogan, or, I have not seen it in their brochures for a while.

Share this post


Link to post
Share on other sites
PhanDad

Being curious, I did some research.  Per this article:

https://www.lawnsite.com/threads/engineering-question-why-19-000fps-blade-speed.21711/

The maximum ANSI blade tip speed is 19,000 feet per minute (216 mph).  (It was 21,000 fpm (239 mph) - the change occurred in 1995 I believe).  

For the late model 48" Sovereign deck with gull wing blades, I calculate a tip speed of 14,750 fpm at 3600 engine rpm.  Parameters used:

1:1 BGB ratio

0.942 center arbor/center PTO rpm ratio (based on belt wrap)

16-5/8" Simplicity OEM blade tip diameter (diagonal measurement) 

While Googling, I bumped into this 2011 TT discussion :

https://simpletractors.com/forums/topic/37941-fast-mowing/

 

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Who's Online (See full list)

    • 9934059
    • deebig
    • John Dyer
    • Todd 717
  • Today's Birthdays

    1. cojo92
      cojo92
      (29 years old)
    2. Rebel_Ron
      Rebel_Ron
      (36 years old)
  • Recent Status Updates

    • SonOfCreepfeed

      SonOfCreepfeed

      Thinkin' about this old girl.

      · 1 reply
    • Dean McFadden

      Dean McFadden

      Good morning peeps! I’m always searching for helpful information with my AC collection. Hope to find out new information and pass on my own experience in restoration. Here are some pics of my babies. I’m still looking for front rims for the 410 so yesterday I put the 310 wheels on took it for a drive. Working pretty good but still needs some carb work. Gotta get the 310 running next. Have a great day!😁
       

      · 1 reply
  • Adverts

×