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Old 03-20-2020, 09:56 PM   #1
35fordtn
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Default REM coated gears

Since this serious corona virus has us slow at work, I thought I would build two transmissions that are for a person in Sweden tonight that have been awaiting for a while. Thought I would share just how beautiful the REM coating process makes the gears.


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Old 03-20-2020, 09:58 PM   #2
AlexLohmann1
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Default Re: REM coated gears

Looks great!

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Old 03-20-2020, 10:27 PM   #3
RalphM
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Default Re: REM coated gears

Michael,
What is that process exactly? I’ve never heard of it.
Thanks,
Ralph
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Old 03-20-2020, 11:01 PM   #4
V8COOPMAN
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Default Re: REM coated gears

Quote:
Originally Posted by RalphM View Post
Michael,
What is that process exactly? Iíve never heard of it.
Thanks,
Ralph

I've posted a link to the REM website. Makes it much easier to understand than trying to do a verbal. Click the link! DD


https://www.procryo.com/RemGears.html
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Old 03-21-2020, 12:18 AM   #5
RobR'35
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Default Re: REM coated gears

Almost looks too good to hide in the gear box.
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Old 03-21-2020, 06:58 AM   #6
51 MERC-CT
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Default Re: REM coated gears

Really not meant just for looks but for performance enhancement as shown in the spec's on the web site.


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File Type: jpg REM.JPG (89.0 KB, 290 views)
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Old 03-21-2020, 08:10 AM   #7
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Default Re: REM coated gears

Interesting.
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Old 03-21-2020, 08:19 AM   #8
Kurt in NJ
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Default Re: REM coated gears

What is the cost to do a set of gears?
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Old 03-21-2020, 08:56 AM   #9
Tim Ayers
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Default Re: REM coated gears

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What is the cost to do a set of gears?
Curious as well
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Old 03-21-2020, 09:50 AM   #10
Mart
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Default Re: REM coated gears

What is the benefit, Michael? Does it cause issues on the closely toleranced fitting items like the splines?

Mart.
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Old 03-21-2020, 10:00 AM   #11
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Default Re: REM coated gears

According to web page this coating is aimed at racing to improve performance.
Seriously doubt that any improvement in a street car will even be noticed.
And it does not eliminate broken gear teeth or failed bearings.
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Old 03-21-2020, 10:21 AM   #12
35fordtn
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Default Re: REM coated gears

Cyro-Rem, is two processes. Cyro is the Cyrogenic treating of the gears which increases their ductile strength, which in turn reduces wear and fatigue. I usually do not have the Cyro done as it is only a 5-10% increase in base metal strength, however if a person had the $$ it would be worth while on Low Reverse sliding gears and the cluster/ or even a Lincoln gear set that has extreme torque and stress in first gear

Rem Coating is a patented technology that removes only the high spots from areas like pitting or more importantly machining marks. I primarily only use it when using NEW reproduction gears, and have used it on Rearend gears as well. I also had a camshaft done for a engine I am building for myself.

It does increase tolerances a minimal amount. In a recent batch a dial indicator showed a .0018 change from before and after. Assembling a transmission or really anything that has been Rem Coated is a real pleasure as everything assembles so much easier. I have driven only one Early Ford transmission that had reproduction lincoln gears. It was one of the best shifting Early Ford Transmissions I have driven but... I cannot say whether that was due to the Rem Coating or not.

It is expensive.. A transmission gear set is usually $200-300 depending on which company you have do the work, and a ring and pinion usually is $100-150 and other parts vary..

It is likely not a huge improvement given cost on a flathead (considering how little we drive these cars) car unless you are going for a salt flats record, but if you are using reproduction gears or if you have a little bit of Money burning a hole in your pocket it is a worthwhile investment.

I only build a couple transmissions a year, but I have built several for one customer that is ovreseas. Ever since I did one with the Rem Coating, he now insists that all his be done that way. I recently had a set done and a Ring and Pinion done for my 36 Pickup which is a long ways from being finished.

What sold me on it was comparing a NEW Melling oil pump that I had the shaft and gears done, in comparision to a NEW off the shelf same melling pump. You could really feel a huge difference. One place I had used in the past primarily only did power generating Windmill shafts and bearings for a manufacturer. They claimed the windmills lastly 15% longer before needing service on the bearings
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Old 03-21-2020, 10:34 AM   #13
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Default Re: REM coated gears

I know all the race teams use if not this process, one just like it. Probably common in the aviation business. I believe it would increase the longevity of the parts. Not that makes any sense for us old guys!
A friend with an Ardun pretty much used different kinds of coatings on almost all the internal parts. Cams, lifters, rockers, gears, non scuff coatings and thermal coatings on pistons.
Then again, his neighbor owns the business that does this stuff.
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Old 03-21-2020, 11:17 AM   #14
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Default Re: REM coated gears

I have sold many Winters QC rears with REM coated spur gears and they are quieter than the uncoated gears so I can understand why. My question is about coating a cam shaft. What is the advantage, how much does it cost and how long does it take? Where does one get this done? I'm building a new French FH and would use this process if there's an advantage. Thanks
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Old 03-21-2020, 11:19 AM   #15
RalphM
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Default Re: REM coated gears

I wish my neighbor had a chrome shop!
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Old 03-21-2020, 11:40 AM   #16
Charlie ny
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Default Re: REM coated gears

This process under various names was a huge positive in heavy industry. Hardened

rails that cast iron engine blocks slid on from station to station would after some use
begin marking machined surfaces on the blocks. After this process the rails felt slippery
to the touch and no longer marks heavy iron parts.
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Old 03-21-2020, 12:02 PM   #17
deuce_roadster
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Default Re: REM coated gears

Krylon32 The place I mentioned is:
https://www.performancecoatings.com/
in the Seattle area (Auburn). Their website has prices and a camshaft is 8$ per cylinder so $64. Look under their "internal coatings" Not a Cryo-Rem process
They did the Cermachrome on my avatar intake and headers. Still looks good 20 years later.

Last edited by deuce_roadster; 03-21-2020 at 12:13 PM.
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Old 03-21-2020, 12:15 PM   #18
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Default Re: REM coated gears

While they didn't use the cryogenic stress relief process, they did us the vibratory tumblers to polish parts when I worked at the Army Depot down in Corpus Christi. They were used for polishing used parts with minimal material loss.

Cryogenic stress relief with liquid nitrogen is used for a lot of manufacturing processes depending on the material being used. It hardens the surface and relieves stresses. I'm not sure of the benefit of a sacrificial coating, it may be to reduce surface loss during the vibratory polishing process that would guarantee good dimensional accuracy of the part after the completion of the process.
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Old 03-21-2020, 11:57 PM   #19
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Default Re: REM coated gears

"or even a Lincoln gear set that has extreme torque and stress in first gear"

A 25 or 26 tooth Lincoln gear set has LESS torque multiplication in 1st and second than a stock 28 or 29 set. That is why they will last longer in a performance application.
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