Author Topic: Help me with calculating speed  (Read 3681 times)

0 Members and 1 Guest are viewing this topic.

blackdiamond

  • Offline Gold Turtle Award
  • *
  • Turtle Points: 1174
  • Male Posts: 5,057
  • Member since Dec '03
  • Crawlin with Marlin
    • View Profile
Re: Help me with calculating speed
« on: Mar 05, 2009, 11:50:16 AM »
I'm not sure I agree, but let me do some figuring and get back to you...

After "geeking" around a bit in excel, I determined that I needed more information to make a good comparison.  If I had a hp & torque curve for a 22RE I could compare the gearing combinations at different speeds to see where the engine was at.

 :think:

I just realized that if you changed to differential gears from 5.29 to 4.10 you would be decreasing torque to the ground by 29%, but if you shift into low you're actually increasing the torque to the ground by 228%.

Assuming 100 lb-ft of engine torque, the comparison would be the following for 4th gear:

1 x 1 x 5.29 = 529 lb-ft

1 x 2.28 x 4.10 = 934.8 lb-ft (76% increase in torque, but speed is limited due to gearing reduction)

It would be fun to compare the various gearing combinations and verify available torque at matching speeds.
1989 4Runner: Dual Ultimate (Inchworm front & Marlin 4.70 rear), Marlin Twin Stick, 1200-lb clutch, 4.88 R&P, Aussie Front, Detroit rear, 30-spline Longs, Long hub gears, ARP hub and knuckle studs & 35x12.50 Cooper STT PRO tires.  Marlin rear bumper & sliders.  FROR front bumper.  SAS with Alcan springs & Rancho 9000XL shocks.  Budbuilt Bolt-on traction bar.  Custom Interior Cage by Those Guys Rod and Customs.

Moab Tested & Rubicon Approved

 
 
 
 
 

Related Topics

2 Replies
2536 Views
Last post Jul 29, 2002, 04:07:55 AM
by hawaii500_1999
29 Replies
25907 Views
Last post Sep 21, 2020, 08:58:15 AM
by Hal Smythe
5 Replies
3523 Views
Last post Jan 27, 2008, 11:42:24 AM
by kneedownnate
5 Replies
2887 Views
Last post Mar 12, 2006, 08:35:13 AM
by 79coyotefrg
41 Replies
25913 Views
Last post Nov 18, 2018, 08:14:40 PM
by RAMc