Welcome! Please use the navigational links on your left to explore our website.

Company Logo Shop Now
   Allis Chalmers Case Farmall IH Ford 8N,9N,2N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver
 
Marketplace
Classified Ads
Photo Ads
Tractor Parts

Community
Discussion Forums
Project Journals
Tractor Town
Your Stories
Show & Pull Guide
Events Calendar
Hauling Schedule

Galleries
Tractor Photos
Implement Photos
Vintage Photos
Help Identify
Parts & Pieces
Stuck & Troubled
Vintage Ads
Community Album
Photo Ad Archives

Research & Info
Articles
Tractor Registry
Tip of the Day
Safety Cartoons
Tractor Values
Serial Numbers
Tune-Up Guide
Paint Codes
List Prices
Production Nbrs
Tune-Up Specs
Torque Values
3-Point Specs
Glossary

Miscellaneous
Tractor Games
Just For Kids
Virtual Show
Museum Guide
Memorial Page
Feedback Form

Yesterday's Tractors Facebook Page

Related Sites
Tractor Shed
TractorLinks.com
Ford 8N/9N Club
Today's Tractors
Garden Tractors
Kountry Life
  
Garden Tractors Discussion Forum

RPMs of small engines

Welcome Guest, Log in or Register
Author  [Modern View]
Tom RS

01-17-2020 13:09:56




Report to Moderator

What is the typical low and high rpm of most small engines? For example a 8 HP Tecumse snow blower engine.




[Log in to Reply]   [No Email]
Jeffcat

01-17-2020 18:22:33




Report to Moderator
 Re: RPMs of small engines in reply to Tom RS, 01-17-2020 13:09:56  
All of the answers are very close. Generators run at 3600 so you get your 60 cycles. Take 3600 and divide by 60 gives you 60 cycles. And as stated you need enough of an idle to have lubrication. That is about all I can think of.



[Log in to Reply]  [No Email]
t.r.k.

01-17-2020 17:55:45




Report to Moderator
 Re: RPMs of small engines in reply to Tom RS, 01-17-2020 13:09:56  
Steve is pretty much correct. Sometimes the OEM specifies a different rpm.

For example, Briggs and Stratton generators specify no load at 3750. (So at full load it will be turning about 3600.) They call the speed loss 'governor droop'.

Some Briggs Vanguard engines on 'swamp boat' motors turn 4200. Pretty much that same engine in a lawn and garden application is rated at 3600.

On certain zero turn mowers that needed a little more 'oomph', the rep let us set fast idle to 3700.

A lot of push mower engines are set around 3200 to 3400 rpm. I think due to a limit in blade tip speed. This may be a government requirement, maybe. (as if a blade moving at 3200 rpm won't do as much damage as a blade at 3600 rpm.)

Some of the smaller 1 cylinder Honda engines get a lean surge above 3400 rpm. So I guess that is about their max where they are designed run well.

[Log in to Reply]  [No Email]
steve_in_mo

01-18-2020 19:19:51




Report to Moderator
 Re: RPMs of small engines in reply to t.r.k., 01-17-2020 17:55:45  
I had an old Snapper walk-behind mower with a leaf grinder attachment and a bagger.
The bagger didn't pack very well until I adjusted the governor up to 4200 rpm.
The engine ran ok that way for about one season.



[Log in to Reply]  [No Email]
ztrmowers

01-19-2020 09:52:39




Report to Moderator
 Re: RPMs of small engines in reply to steve_in_mo, 01-18-2020 19:19:51  
I always had the impression you might work on small engines or have a small engine shop,would you be interested in bunch new parts etc from a closing out lawm mower shop



[Log in to Reply]  [No Email]
steve_in_mo

01-17-2020 13:15:18




Report to Moderator
 Re: RPMs of small engines in reply to Tom RS, 01-17-2020 13:09:56  
High RPM for most of them is 3600, low can run around 1500. If you idle them too low, they don't blow enough air or splash enough oil for a long life.



[Log in to Reply]  [No Email]
[Options]  [Printer Friendly]  [Posting Help]  [Return to Forum]   [Log in to Reply]

Hop to:


TRACTOR PARTS TRACTOR MANUALS
Fast Shipping!  Most of our stocked parts ship within 24 hours (M-Th). We have the parts you need to repair your tractor - the right parts. Our fast shipping, low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]

Home  |  Forums


Copyright © 1997-2019 Yesterday's Tractor Co.

All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy

TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters

Website Accessibility Policy