Modification weight and acceleration issue - JeepForum.com
 
LinkBack Thread Tools
post #1 of 5 Old 12-29-2019, 05:38 PM Thread Starter
Jcmoney1010
Registered User
 
Join Date: Jun 2019
Posts: 2
Modification weight and acceleration issue

Hey guys! For Christmas I received a new EAG steel bumper and a pair of Smittybilt steel steps. After getting them put on and taking the Jeep for a spin, I noticed that the acceleration is rather sluggish.

Now I realize that any added weight is going to cause some performance issues, but the overall weight of the new items added is roughly 140lbs (about the weight of a smaller passenger), which seems like it should be negligible. Is the slower acceleration due to how low the weight sits and how it’s proportioned?

Just curious as to what you guys have to say. Thanks!

Jcmoney1010 is offline  
Sponsored Links
Advertisement
 
post #2 of 5 Old 12-29-2019, 06:01 PM
222Doc
Registered User
 
222Doc's Avatar
2012 JK Wrangler 
 
Join Date: Sep 2011
Location: Lake Havasu City
Posts: 8,920
Garage
i had to look at your only other post to see what you are driving. If its a JL wrangler then i would say no that is not enough weight to have any huge lose of power. unless we are doing 1/4 mile times and counting 1/10s. Now if it was say some old jeep that had say 55hp like they did back in the 40s. yea every pound starts to add up fast.

If you have JL you might get more to SEE a post using the section for the year type jeep you own. Street jeep is one of deadest these is. Since Jeep and street is somewhat an oxymoron, at least in my vernacular.

Home of the Parker Desert Splash

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
222Doc is offline  
post #3 of 5 Old 12-31-2019, 12:31 PM
gutthans
Registered User
 
gutthans's Avatar
1995 YJ Wrangler 
 
Join Date: Jun 2018
Location: Deland
Posts: 838
Garage
Divide the rear wheel horsepower into the total weight. That will give you the power-to-weight ratio.

My YJ weighed in at about 2750 lbs. pushing roughly 255 hp...about 10.7 to 1...for comparison recall that the Pontiac GTO, Chevrolet Camaro, Ford Mustang netted about 10 to 1 in high performance street trim. After adding body armor, heavier wheels, etc. I'm roughly 11.4 to one. THAT is a noticeable change in take-off performance.

140 lbs distributed well as 222Doc noted is kind of minor, but if it's mostly up front, you won't get the 'rise' from acceleration and that can change your perception of how much it is accelerating (but it will dive more on braking).

If you do the math...and only go up a few tenths, you're not hurting.

Last edited by gutthans; 12-31-2019 at 10:36 PM.
gutthans is offline  
 
post #4 of 5 Old 01-13-2020, 09:54 AM
chris87xj
JF Admin
 
chris87xj's Avatar
1987 XJ Cherokee 
 
Join Date: Sep 2006
Location: 3rd rock from sun
Posts: 14,126
It's hard to believe adding 65 kilograms would result in a noticeable performance difference.

***Chris***

"You can set my jeep on fire and roll it down a hill,
But I still wouldn't trade it for a Coupe DeVille."


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

chris87xj is offline  
post #5 of 5 Old 01-24-2020, 01:34 AM
gspfunk
Registered User
 
gspfunk's Avatar
2019 WK 
 
Join Date: Dec 2017
Location: North DFW, Tx
Posts: 199
Garage
Any other changes? Different tires? Larger or LT sizes?

19 Sting-Gray WK2 Trailhawk | Hemi | MRR | Ridge Grapplers
08 Silver WK1 SRT8
gspfunk is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the JeepForum.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.



Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may 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
Trackbacks are Off
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome