DIY Home Improvement, Remodeling & Repair Forum > DIY Home Improvement > Garden and Lawncare > Buying a corded string trimmer




Reply
 
Thread Tools Search this Thread Display Modes
Old 06-13-2014, 04:15 PM  
Wuzzat?
Banned
 
Join Date: Jan 2010
Posts: 2,328
Liked 167 Times on 154 Posts
Likes Given: 94

Default Buying a corded string trimmer

or almost anything else.

Other things being equal, Economy of Scale says a larger trimmer (7A) should cost less per amp than a smaller trimmer (4A).

But with the six trimmers I looked at from either Sears or HD, with the smaller I'm paying $7.50 per amp, with the larger it's $9.30/A.

For $30 I could get either 4A or 4.2A so it would have been the 4.2A but I didn't want to go that cheap.
The average is $8/A and I paid $50 for 6.5A.

Possibly both stores within walking distance of each other have their customers believing that more money = better.
And who's going to draw a graph to make more sense of the prices and features?



__________________

Last edited by Wuzzat?; 06-13-2014 at 04:17 PM.
Wuzzat? is offline  
 
Reply With Quote Quick reply to this message
Old 06-13-2014, 05:05 PM  
bud16415
Fixer Upper
 
bud16415's Avatar
 
Join Date: Feb 2013
Location: Erie Pa, Pa
Posts: 1,343
Liked 404 Times on 316 Posts
Likes Given: 130

Default

As the size of things double by a factor of square the volume goes up by a factor of cube. All parts can't be doubled to scale or the machine will weaken. I would say weight might be a better factor to use than amps. Even then in most cases a serious tool is built better than a toy tool. Life expectancy should be a factor.


Sent from my iPhone using Home Repair



__________________
bud16415 is offline  
 
Reply With Quote Quick reply to this message
Old 06-14-2014, 12:39 AM  
slownsteady
Supporting Member
HRT_SUPPORTER.png
 
slownsteady's Avatar
 
Join Date: Jun 2009
Location: Newton, NJ
Posts: 1,296
Liked 192 Times on 164 Posts
Likes Given: 250

Default

Quote:
Other things being equal, Economy of Scale says a larger trimmer (7A) should cost less per amp than a smaller trimmer (4A).
Following that logic, you should forget the trimmer and buy a power generation plant. But seriously, you aren't accounting for design, manufacture and (importantly) shipping.
__________________
slownsteady is offline  
 
Reply With Quote Quick reply to this message
Old 06-14-2014, 06:16 AM  
Wuzzat?
Banned
 
Join Date: Jan 2010
Posts: 2,328
Liked 167 Times on 154 Posts
Likes Given: 94

Default

Quote:
Originally Posted by slownsteady View Post
Following that logic, you should forget the trimmer and buy a power generation plant. But seriously, you aren't accounting for design, manufacture and (importantly) shipping.
The design cost [non-recurring engineering] gets divided by the number of units made so it approaches zero dollars per unit.

Other factors may weaken the effect of economy of scale. Worst case, I'd think I'd pay the same per amp of motor draw.

In any case, if you graph the price vs. amps it kind of steers you away from the more expensive models. Usually you are steered toward the more expensive models ("for just a few dollars more, you can have. . .").

I think this shows more about the customers of these stores in my local area than the product but I'd like to hear from any MBAs out there.
__________________

Last edited by Wuzzat?; 06-14-2014 at 06:27 AM.
Wuzzat? is offline  
 
Reply With Quote Quick reply to this message
Old 06-14-2014, 06:43 PM  
slownsteady
Supporting Member
HRT_SUPPORTER.png
 
slownsteady's Avatar
 
Join Date: Jun 2009
Location: Newton, NJ
Posts: 1,296
Liked 192 Times on 164 Posts
Likes Given: 250

Default

Your spreadsheet should include many more variables.

__________________
slownsteady is offline  
 
Reply With Quote Quick reply to this message
Old 06-14-2014, 07:30 PM  
Wuzzat?
Banned
 
Join Date: Jan 2010
Posts: 2,328
Liked 167 Times on 154 Posts
Likes Given: 94

Default

Quote:
Originally Posted by slownsteady View Post
Your spreadsheet should include many more variables.
The others - cutting width, weight, etc. - were pretty close. That was the "other things being equal."
BTW, it works pretty well, and I already had a 100', #14 cord.

Now I'll have to figure out why my gas weedwhacker is not running well. And my lawnmower, which starts then dies.

It's a price vs. performance graph and I guess the performance can be whatever is important to the buyer. For cordless drill motors it can be power or endurance or weight or battery replacement cost. For oscilloscopes it's bandwidth vs. price, once I decided on a two channel model.


__________________
Wuzzat? is offline  
 
Reply With Quote Quick reply to this message
Reply


Quick Reply
Message:
Options

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Similar Threads
Thread Thread Starter DIY Home Repair Forum Replies Last Post
Weed Trimmer, Runs in START, dies in RUN ozarkdan Tools 19 05-15-2013 11:49 AM
squirrels chewed through HD Christmas light string, Wuzzat? Electrical and Wiring 2 12-30-2012 10:09 AM
Weed trimmer 70chevelless Tools 9 10-08-2010 09:17 AM
broken gas trimmer brandonriffel Garden and Lawncare 7 03-23-2010 04:57 PM
Poor Paint Trimmer rodduffy Decorating and Design 4 05-08-2007 06:41 PM

Newest Threads

LATEST SPONSOR DEALS