Gear Pattern Advice?

Thedaringmove · Feb 1, 2015

Hey everyone! I'm new to NAXJA

!
I picked up a Hp30 not too long ago so I'm attempting my first gear setup in the garage right now. I have all the necessary tools and an understanding of how everything works.

Problem is I've been bouncing back and forth between my pinion being too far and too close.

Here's my latest attempt:
Drive:

Coast:

Too close right?
Backlash is at .009

Planning on getting this done tonight so as soon as I get a response I'll go out and do it!

Thanks guys

smokinu · Feb 1, 2015

ring gear specs on a turdy are (.006" to .010")
found here
http://www.crawlpedia.com/ring_pinion_setup.htm

Serious Offroad · Feb 1, 2015

Thedaringmove said:
Hey everyone! I'm new to !
I picked up a Hp30 not too long ago so I'm attempting my first gear setup in the garage right now. I have all the necessary tools and an understanding of how everything works.

Problem is I've been bouncing back and forth between my pinion being too far and too close.

Here's my latest attempt:
Drive:

Coast:

Too close right?
Backlash is at .009

Planning on getting this done tonight so as soon as I get a response I'll go out and do it!

Thanks guys

Yep, too deep. The straight line at the root is a dead giveaway. Pull .010" from the pinion shims and run it again.

Thedaringmove · Feb 1, 2015

Okay! Gimme 20 mins!

THANKs!!!

Thedaringmove · Feb 1, 2015

Drive:

Coast:

Backlash now at 13.

Serious Offroad · Feb 1, 2015

Might be a tad shallow, tighten up the backlash and run it again.

Thedaringmove · Feb 1, 2015

I'll go all the way down to 5/6 thou BL.

I only took off .005 from the pinion that time.
Pics after backlash coming in 10min

Thedaringmove · Feb 1, 2015

Drive:

Coast:

Backlash at 4.5 thou

Serious Offroad · Feb 1, 2015

Plus
Minus
Plus
Minus
Plus
Minus....

it never ends.

The backlash is a little tight, but the pattern looks better.

Thedaringmove · Feb 1, 2015

Starting to look better i think

Thedaringmove · Feb 1, 2015

If I take the backlash out to .07-.08 will the pattern improve or go to poop haha?

It's tedious but I'm having fun. Something new!

Serious Offroad · Feb 1, 2015

I'd move .002" from the ring gear side to the pinion side.

Thedaringmove · Feb 1, 2015

Lemme permanently setup the pinion and check backlash again.

Thedaringmove · Feb 1, 2015

Realized the seal won't affect the pinion depth.

But I adjusted both the preload pinion shims and backlash just now for hopefully a final.

Drive:

Coast:

Just a little worried about the harsh line... Crossing my fingers though. Opinion?

Serious Offroad · Feb 1, 2015

I'd run it.

Thedaringmove · Feb 1, 2015

Freakin sick.
One more kid on the planet has done a regear himself hah

Thanks so much for the help

Serious Offroad · Feb 1, 2015

Your welcome

ehall · Feb 1, 2015

gg kids

Thedaringmove · Feb 1, 2015

markw · Feb 2, 2015

Just curious, since you adjusted pinion depth, did you finalize with a baffle behind the race? Most master kits only include one and you usually destroy them driving the race out. It's only purpose is to hold gear oil in the pinion bearings so they live a long productive life.

Mark

Gear Pattern Advice?

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