Jump to content

Unofficial Home of Old Simplicity & Allis-Chalmers Garden Tractors


Variable Speed Question

Recommended Posts


When the variable speed on a b112 is adjusted properly should the belt stop almost immediately when depressing the clutch?  Also if adjusted properly can you clutch the variable speed when it is in a different range other than high (7)?  Thanks in advanced.

Share this post

Link to post
Share on other sites

I am not completely versed on this, but I believe the belt should stop relatively quickly as the brake should also engage. I don't believe you can adjust the variable unless you are in motion, or neutral with the clutch engaged.  


Edited by Brettw
  • Like 1

Share this post

Link to post
Share on other sites

The variable on my grading tractor likes to be about half way through it's range if I want to make sure that shifting is smooth. I've had others that worked good in all ranges, and I'm not sure what the differences are. I notice that if I don't spend any time between gears, shifting is better too. 


I've got a feeling that the factory adjustments work better when you have new parts. All my belts are old and very flexible. I kind of wish that Simp would have just put a little brake shoe on an arm to lightly push against the inside rear shiv between it and the transmission. Like a snowmobile of the same vintage. A positive stop.

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)

    • B10Dave
    • Luke Rothvoss
    • Clarsmn
    • dince
    • Al Truistic
  • Today's Birthdays

    1. Mustangsvo
      (37 years old)
    2. RenegadeJ
      (82 years old)
    3. srwven
      (50 years old)
  • Recent Status Updates

    • Paul M.Murphy

      Paul M.Murphy

      Hello glad I got on this site. I hope to upload a couple of photos of my Simplicity Broadmoor 
      Model 707 Tractor. I have replaced all the belts on it and installed a new ignition switch.
      Have a mower deck which was in poor shape , repaced a couple of bushings and welded the
      deck where there was some holes. The tractor and mower deck came from a friend and the 
      mower deck metal was getting pretty thin. Some new metal was put in it and we also undercoated the underside of the deck. This was done by my friend Greg Toulman.
      I have not put the mower deck on the tractor yet, waiting for Greg to come home and give me a hand. Can you please tell me if there is a manual for the mower deck and where I could get one.
      I would also like to get some moon wheel discs as well.
      I will try and down load some photos of the tractor when my wife shows me how to. 
      I really love driving this tractor and also how well it is made compare today's tractors, especially the flexible rear end and the rollers.
      Tell the next time 
      · 9 replies
    • jbrooks

      jbrooks  »  Talntedmrgreen

      folowing  this from a link at the downloads.  I just rescued an AC 920 with the lambodini diesel. I can' t download  yet .  Where did you find the PDF copy you posted. . I would like to figure out how to adjust the injection pump. 
      I assume it's a bosche, correct
      · 0 replies
  • Adverts