wheel "Skidding" when downshift - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Transmission - Rearend
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 12-01-2003, 11:53 PM
Member
 
Last photo:
Join Date: Nov 2003
Location: Modesto
Age: 27
Posts: 222
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
wheel "Skidding" when downshift

I have a 66 el camino and i have 4 way drum brakes
so i downshift sometimes while coming to a stop.
when downshifting to 1st gear my left rear wheel "skids"
the tires are not bald. I am not sure of gear ratio but i do not have posi. Does anyone know why it would "lock up" it doesnt do it long, about 2 or 3 seconds




Thanx

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 12-02-2003, 03:44 AM
DoubleVision's Avatar
Not Considered a Senior Member
 
Last photo:
Join Date: Oct 2002
Location: Heart Of Dixie
Age: 40
Posts: 10,654
Wiki Edits: 0

Thanks: 15
Thanked 58 Times in 55 Posts
that`s pretty common when downshifting to lower gear with decent speed, by pulling it to a lower gear, the gears in the transmission aren`t moving, so it causes the sudden "skid" as you discribe since it takes a few seconds for them to be at full momentem of the vehicles speed.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 12-02-2003, 05:22 AM
Gettin a life..Goodbye
 
Last photo:
Join Date: Jun 2003
Location: Bye
Posts: 128
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Try giving it a lil shot of accelerator before you let out on the clutch. That's become my standard practice when shifting down. It gets the R's up on the engine to match your groundspeed.
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 12-02-2003, 06:40 AM
M&M CUSTOM's Avatar
Hotrodders.com Moderator
 
Last wiki edit: Transmission identification
Last journal entry: 1988 Suburban, the project continues.
Last photo:
Join Date: Mar 2003
Location: Northwest Pennsylvania.
Age: 43
Posts: 2,231
Wiki Edits: 9

Thanks: 0
Thanked 1 Time in 1 Post
It's the exact opposite as dumping the clutch as you upshift and "chirp" the tires while accelerating.
When you downshift and catch the lower gear while the engine is revving lower than in the previous gear, something in the driveline is going to have to "give" in order for the rest of the parts to turn in proportion to each other, and the best part to have give would be the tires.
If the tires didn't give the next part to slip would most likely be the clutch or something else could possibly grenade on you.
You are being just a little too harsh on your downshifts.
The best advise I can give you on this subject is to try to go a little more into your brakes and downshift a little later as your speed decreases to the point it will match your engine speed a little more.
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 12-02-2003, 08:58 AM
Member
 
Last photo:
Join Date: Nov 2003
Location: Modesto
Age: 27
Posts: 222
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Thanx for the explanation M&M!

ill be more careful
Reply With Quote Quick reply to this message

Recent Transmission - Rearend posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

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 On
Pingbacks are On
Refbacks are On



All times are GMT -6. The time now is 08:04 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.