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Author Topic: Gears  (Read 4749 times)

lonesouth

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Gears
« on: April 28, 2016, 03:30:40 PM »
Anyone have some free time to help me setup the gears in my front/rear axles?  I'll have everything already torn down, just need some experience on the setup.
1977 Bronco U15 ,351w,C4,PS,PB,1"BL,32s

JustaFordGuy

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Re: Gears
« Reply #1 on: April 29, 2016, 08:46:12 AM »
I'll be tied up for the next few weekends but after that I may have some time.

77 Bronco, 302, 4bbl, Hei, C4, PS, PB, BCB-A/C, 33" KM2s, D44/Lock-Right Chromo axles, 9"/Grizzly locker, 2.5" sl, 1" bl, Bilstein shocks, 1 ton steering, JB-fab twin stick, D20,

2017 F350 CCLB KR FX4
2005 F250 CCSB Lariat FX4

lonesouth

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Re: Gears
« Reply #2 on: October 21, 2016, 02:43:45 PM »
What's your schedule look like for the next week?
1977 Bronco U15 ,351w,C4,PS,PB,1"BL,32s

JustaFordGuy

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Re: Gears
« Reply #3 on: October 26, 2016, 08:36:54 AM »
I never have any time on the weekend but maybe after work one day next week. What time do you get home?
77 Bronco, 302, 4bbl, Hei, C4, PS, PB, BCB-A/C, 33" KM2s, D44/Lock-Right Chromo axles, 9"/Grizzly locker, 2.5" sl, 1" bl, Bilstein shocks, 1 ton steering, JB-fab twin stick, D20,

2017 F350 CCLB KR FX4
2005 F250 CCSB Lariat FX4

lonesouth

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Re: Gears
« Reply #4 on: October 27, 2016, 07:47:02 AM »
I got the diff put in last night.  Pre-load is 20-30 with as much torque as I could muster on the pinion nut, which is still less than 200lbs.  Backlash is .07, and the pattern looks shallow on the drive side, deep on the coast side, and perfect where the paint rubbed off on other teeth.

Pattern looks like the bottom left of the acceptable patterns picture.
https://www.ringpinion.com/Content/Book/Reading-and-Adjusting-Ring-and-Pinion-Tooth-Patterns.pdf

I get home around 6.
« Last Edit: October 27, 2016, 08:03:34 AM by lonesouth »
1977 Bronco U15 ,351w,C4,PS,PB,1"BL,32s

JustaFordGuy

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Re: Gears
« Reply #5 on: October 27, 2016, 06:50:38 PM »
Good work man, i bet that pattern wil be fine.

I have so much to do to our camper in the next two weeks to get ready for our vacation that i don't know if I'll have any time to help with the other diff but if you get in a real jam let me know.
77 Bronco, 302, 4bbl, Hei, C4, PS, PB, BCB-A/C, 33" KM2s, D44/Lock-Right Chromo axles, 9"/Grizzly locker, 2.5" sl, 1" bl, Bilstein shocks, 1 ton steering, JB-fab twin stick, D20,

2017 F350 CCLB KR FX4
2005 F250 CCSB Lariat FX4

lonesouth

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Re: Gears
« Reply #6 on: October 28, 2016, 01:17:00 PM »
will do, thanks!
1977 Bronco U15 ,351w,C4,PS,PB,1"BL,32s

lonesouth

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Re: Gears
« Reply #7 on: October 30, 2016, 11:02:04 AM »
I thought I had an open 9" carrier, turned out to be a trac-loc.  Anyone have an open carrier sitting on the shelf?

850-273-8818
1977 Bronco U15 ,351w,C4,PS,PB,1"BL,32s

lonesouth

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Re: Gears
« Reply #8 on: October 31, 2016, 07:43:13 AM »
Got the front diff installed.  Not a pro job, but i'm betting on it holding together.  Either going to regear my trac-loc or hopefully find an open carrier so I can go ahead and do the spartan.
1977 Bronco U15 ,351w,C4,PS,PB,1"BL,32s

JustaFordGuy

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Re: Gears
« Reply #9 on: October 31, 2016, 08:55:39 AM »
If you're going to use it mostly off road hold out and put in the Spartin. If it will be mostly street the trac-loc will be much better. An automatic locker can be quirky on the street. I have mostly gotten used to my Grizzly but it can be a pain sometimes on the street.
77 Bronco, 302, 4bbl, Hei, C4, PS, PB, BCB-A/C, 33" KM2s, D44/Lock-Right Chromo axles, 9"/Grizzly locker, 2.5" sl, 1" bl, Bilstein shocks, 1 ton steering, JB-fab twin stick, D20,

2017 F350 CCLB KR FX4
2005 F250 CCSB Lariat FX4

lonesouth

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Re: Gears
« Reply #10 on: October 31, 2016, 10:50:56 AM »
If you're going to use it mostly off road hold out and put in the Spartin. If it will be mostly street the trac-loc will be much better. An automatic locker can be quirky on the street. I have mostly gotten used to my Grizzly but it can be a pain sometimes on the street.

good news is if I don't like the spartan, or if I blow it up, I'm not out much.  If I go LSD, it will be true-trac
1977 Bronco U15 ,351w,C4,PS,PB,1"BL,32s

BroncoBlair

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Re: Gears
« Reply #11 on: October 31, 2016, 02:47:38 PM »
What are you going to do with the 3.50 9" gears you pull out? I need to re gear the rear on mine it is a 3.00

lonesouth

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Re: Gears
« Reply #12 on: October 31, 2016, 04:13:17 PM »
you can have them.  I'll let you know when I get them pulled
1977 Bronco U15 ,351w,C4,PS,PB,1"BL,32s

BroncoBlair

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Re: Gears
« Reply #13 on: November 01, 2016, 09:12:45 AM »
ok thanks

lonesouth

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Re: Gears
« Reply #14 on: November 10, 2016, 08:25:55 AM »
I never bothered to count the teeth on my 9" 4.11 gear, since 410 is clearly stamped on the ring.  After chasing a binding issue, discovering that the rear tires completed a rotation faster than the front, and finally counting the teeth, my rear gear turned out to be 3.50.  So, now I have a 4.11 richmond set on order.
1977 Bronco U15 ,351w,C4,PS,PB,1"BL,32s

 

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