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Thread: AR60 Pinion Bushings vs Bearings vs Bushings Thread

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Old 04-26-2013, 09:59 PM   #21
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Default Re: AR60 Pinion Bushings vs Bearings vs Bushings Thread

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Originally Posted by cephas View Post
A stainless option???
Too soft.

This is a proper option.
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Old 04-26-2013, 10:00 PM   #22
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Default Re: AR60 Pinion Bushings vs Bearings vs Bushings Thread

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Originally Posted by Harley View Post
Too soft.

This is a proper option.
"This"? Picture?
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Old 04-28-2013, 08:20 PM   #23
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Default Re: AR60 Pinion Bushings vs Bearings vs Bushings Thread

Any update on this Harley? I just blew up another bearing at the last comp.
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Old 04-28-2013, 08:30 PM   #24
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I just lost my rear ring gear because I hadn't inspected mine (3 months old). I been wanting a reason to order under drive/over drive gears anyway.

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Old 04-28-2013, 08:51 PM   #25
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Default Re: AR60 Pinion Bushings vs Bearings vs Bushings Thread

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Originally Posted by gbaileyo7 View Post
I just lost my rear ring gear because I hadn't inspected mine (3 months old). I been wanting a reason to order under drive/over drive gears anyway.

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Want a reason NOT to order them???
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Old 04-28-2013, 09:38 PM   #26
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Default Re: AR60 Pinion Bushings vs Bearings vs Bushings Thread

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Originally Posted by Goatsniper View Post
Any update on this Harley? I just blew up another bearing at the last comp.
This week. Waiting on the mail...
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Old 04-28-2013, 09:47 PM   #27
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Default Re: AR60 Pinion Bushings vs Bearings vs Bushings Thread

Sweet! Ready to see the fix
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Old 04-28-2013, 10:36 PM   #28
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Default Re: AR60 Pinion Bushings vs Bearings vs Bushings Thread

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Originally Posted by Dostradamas View Post
Good info

I would go one step further (because I just cannot leave things as vague as "brass" & "metal")& explain what the 2 types of metal alloys those bushings are made of.

***Traxxas Bronze ones are Oilite:

Oilite material is the most widely used of all the types of Oilites. Standards that encompass the Oilite material are: ASTM B-438-95A Grade 1 Type II, MIL[disambiguation needed]-B-5687D Type 1 Grade 1, CT-1000-K26, SAE 841, and old SAE standard Type 1 Class A.[3]


Oilite 87.2–90.5% Copper /max 1%Iron / 0–0.3% Graphite / 9.5–10.5% Tin / 1.0% Other Elements

Oilite Plus is the same bronze alloy as an Oilite, impregnated with turbine oil and fine particles of polytetrafluoroethylene (PTFE). This reduces the friction by approximately 17% versus standard Oilite material. This material is usually used in applications that exhibit mixed-film or boundary condition lubrication. Situations where this type of lubrication is encountered commonly include oscillating motions, slow speeds, intermittent use, pulsating loads, and uneven loads.

***HPI Metal Bushings are:
Super Oilite 18–22% Copper /Balance Iron /0 Graphite /0 Tin / 2.0% Other Elements
Super Oilite is an iron based material that is harder, stronger, and cheaper than Oilite. It is rated for slower speeds, but it can handle higher loads. Common applications include farm equipment, winches, sheaves, conveyors, and pulleys. Applicable standards are: ASTM B-439-95 Grade 4, MIL-B-5687D Type 2 Grade 4, SAE 863, and old SAE standard Type 3.


Super Oilite 16 18–22% Copper /Balance Iron /0.6–1.0% Graphite /0 Tin / 2.0% Other Elements
Super Oilite 16 is Super Oilite that has been heat treated to a hardness greater than HRC 50. This material is used for extreme loads and slow oscillating motions. Common applications include cranes, hoists, machine presses, and conveyors. The applicable standard is ASTM B-426 Grade 4 Type 2.
I will sleep much better tonight knowing this
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Old 04-28-2013, 11:57 PM   #29
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Default Re: AR60 Pinion Bushings vs Bearings vs Bushings Thread

Can't find TRA1243? But I can find TRA1675, which is supposed to be 11x5x4. Will they work, or are they a differend tolerance?
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Old 04-29-2013, 07:30 AM   #30
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Quote:
Originally Posted by Trail Monkey View Post
Can't find TRA1243? But I can find TRA1675, which is supposed to be 11x5x4. Will they work, or are they a differend tolerance?
Tolerance is in the dimensions. They should work. I'd wait to see what Harley is cooking up though. It'll probably be worth the wait.
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Old 04-30-2013, 02:53 AM   #31
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Default Re: AR60 Pinion Bushings vs Bearings vs Bushings Thread

Ill be getting these as well....my rear axle ring gear doesnt like.me right now....
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Old 04-30-2013, 03:07 AM   #32
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Default Re: AR60 Pinion Bushings vs Bearings vs Bushings Thread

There all the same tolerance. Would cost to much have another assembly line for cheaper.


Traxxass most likely buys these from across the pond

I think this shows what part number I used


Last edited by evan03; 04-30-2013 at 03:10 AM.
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Old 05-02-2013, 03:39 PM   #33
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Default Re: AR60 Pinion Bushings vs Bearings vs Bushings Thread

Any updates, Harley?

Just a thought, would it be beneficial to run some of these bushings in any other locations (knuckles, ends of the axle housing) on a high powered rig?
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Old 05-02-2013, 03:55 PM   #34
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Default Re: AR60 Pinion Bushings vs Bearings vs Bushings Thread

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Originally Posted by Devil Inc View Post
Just a thought, would it be beneficial to run some of these bushings in any other locations (knuckles, ends of the axle housing) on a high powered rig?
Running bushings in place of bearings keeps the catastrophic failure of a seized bearing from happening at the cost of increased resistance.

Bearings can lose the balls at the time of failure increasing the play on the shaft dramatically. This increased play can & will damage gears.

The pinion shaft with lots of power / speed burns bearings fast (sometimes so fast it damages other axle components before you notice the bearing) bushings slow this failure down so you can swap em out before any other damage occurs.

If you have other spots that are burning bearings up faster than you like, bushings will give you tougher, longer lasting performance at the cost of more drag.

I want bearings everywhere else personally.

I am curious as well about Harley's "bushing up his sleeve" & what they are made of.

Last edited by Dostradamas; 05-02-2013 at 03:58 PM.
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Old 05-02-2013, 04:00 PM   #35
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Default Re: AR60 Pinion Bushings vs Bearings vs Bushings Thread

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Originally Posted by evan03 View Post
There all the same tolerance. Would cost to much have another assembly line for cheaper.


Traxxass most likely buys these from across the pond

I think this shows what part number I used

I am quite sure all manufacturers of r/c's buy out their bearings & bushings.
It makes no sense whatsoever for them to make them in house.
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Old 05-04-2013, 11:49 AM   #36
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Default Re: AR60 Pinion Bushings vs Bearings vs Bushings Thread

Did your mail ever run harley?
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Old 05-04-2013, 01:52 PM   #37
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Default Re: AR60 Pinion Bushings vs Bearings vs Bushings Thread

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Originally Posted by Goatsniper View Post
Did your mail ever run harley?
Crap, I forgot to check. I'll go look.

Edit: hasn't come today yet.

Last edited by Harley; 05-04-2013 at 01:55 PM.
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Old 05-04-2013, 02:49 PM   #38
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I'm impatiently awaiting this news, I got 2 packs through a new set of traxxas bushings, I am running a mmp pro4 3300kv in my dmg koh #7 w over under gearing, I really dont go slow w it, didn't get all the way through pack 2 n the rear end started making "the noise " aaahhhh

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Old 05-04-2013, 02:53 PM   #39
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Default Re: AR60 Pinion Bushings vs Bearings vs Bushings Thread

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Originally Posted by savagebeast View Post
I'm impatiently awaiting this news, I got 2 packs through a new set of traxxas bushings, I am running a mmp pro4 3300kv in my dmg koh #7 w over under gearing, I really dont go slow w it, didn't get all the way through pack 2 n the rear end started making "the noise " aaahhhh

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The over under gearing is a terrible combo with a rig that is going to have speed. You are multiplying the stress in the gears by adding the additional drag. You should be running the same ratio front and rear to keep the axles alive with pro4 type power.
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Old 05-04-2013, 03:40 PM   #40
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Default Re: AR60 Pinion Bushings vs Bearings vs Bushings Thread

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Originally Posted by Harley View Post
The over under gearing is a terrible combo with a rig that is going to have speed. You are multiplying the stress in the gears by adding the additional drag. You should be running the same ratio front and rear to keep the axles alive with pro4 type power.
I proved that the hard way. He's right.
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