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Old 01-27-2005, 08:16 PM   #16
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I will just use motor bearing oil on em like last time cause it was smooth. I'll just have to go and oil them more often.
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Old 01-29-2005, 06:59 PM   #17
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I've heard that mobil synthetic is the best as far as auto oil goes.just have to soak over night or slightly apply some heat so as to let the oil get in the tiny spaces.
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Old 01-29-2005, 07:35 PM   #18
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Quote:
Originally posted by Hyper1
I've heard that mobil synthetic is the best as far as auto oil goes.just have to soak over night or slightly apply some heat so as to let the oil get in the tiny spaces.
Funny to hear that, I thought I was the only one doing that!

Just a tip or all you THIN oil ppl out there. Oil that is too thin offers no protection under load like acceleration or turning. It may FEEL free but it is only an illusion. REmember that your car on the track is under different loads compared to holding it in your hands turning the spur gear.
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Old 01-29-2005, 08:04 PM   #19
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Motor oil would be good to use for the longevity of the bearing, especially if you are not into frequesnt maintenance. The down side to using motor oit or Marvel Mystery oil is that it is so heavy of a weight, the bearing does not roll as free as it should or could.
If you are into performance, the thinner the oil the better. Trinity Royal oil is pretty dang good as another member said. I prefer Acer oil over all of them. One drop seems to go further than the other stuff I have used, it is extremely thin for incredible performance and it seems to stay in the bearing longer. My bearings also seem cleaner in te long run using the Acer bearing lube.
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Old 01-29-2005, 08:26 PM   #20
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"Thinner is better" I don't know about that part our bearings run at very high rpm's and too thin a lubricant doesn't offer enough protection from the friction and heat produced from the rpm's.Synthetic lubricant's offer substanially better protection due to the fact that it adheres to the parts and doesn't just sling off the first time you fully spin up the bearings.It's the reason that all the premier auto's come standard with synthetic oils in them.Just about all your industrial lubricant's are now synthetic also.I think Tribo is a synthetic also.If anyone needs any Tribo let me know,I can get all you need.
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Old 01-30-2005, 09:11 AM   #21
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Quote:
Originally posted by Hyper1
"Thinner is better" I don't know about that part our bearings run at very high rpm's and too thin a lubricant doesn't offer enough protection from the friction and heat produced from the rpm's.Synthetic lubricant's offer substanially better protection due to the fact that it adheres to the parts and doesn't just sling off the first time you fully spin up the bearings.It's the reason that all the premier auto's come standard with synthetic oils in them.Just about all your industrial lubricant's are now synthetic also.I think Tribo is a synthetic also.If anyone needs any Tribo let me know,I can get all you need.
If you read my entire post I said that thinner is better for performance and not for longevity. Thinner oil also require more maintenance as I stated above as well. The thicker the oil the more rolling resistance the bearing will have and the less freely it will spin.

Your correlation of comparing the use of synthic oil in RC car bearings is not comparable to why Automobile manufactures use it in cars. You cannot comapre an RC carbearing to a 400-600 HP motor...you are comparing apples and oranges. Besides, what best for performance in a gas powered engine is not best for perfomancee in an RC car.

Tribo is best used for bushings and not bearings. Once again Tribo is a much thicker oil (I use it regiously on bushings and brushes, but it will never touch my bearings). Using it or any other synthetic will help keep your bearings in their best condition for as long as possible but they will not spin as freely as using a good quality bearing oil.

Do a test yourself. Gert one bearing and clean it very well. Put a drop of Tribo or any other synthetic and spin the bearing. Take the same bearing and clean it to remove any synthetic oil and put one drop of bearing oil in it. Now spin the bearing. The bearing with oil wll spin much, much longer than the bearing with synthetic iol in it. Now multipy this times 20 or so odd bearing an the RC car and you have your answer.

As far as too much friction or heat in RC car bearings, I have never blown out a bearing for any other reason than a crash ruined it. In my TC3, I ran the exact same set of Bearings for 2.5 race seasons with only using Acer bearing oil and never had to replace one bearing. If I didn't retire the car, the bearing would still be going strong!!

Last edited by koabich; 01-30-2005 at 09:22 AM.
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Old 01-30-2005, 09:33 AM   #22
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Marvel air tool oil is very thin... i use Marvel air tool oil, mixed with valve lube oil... after 17 years of racing, this is the hands down best combination i have ever seen.. ive tried everything posible out there... I run pan cars..my rear axle with this combo spins for over 3 minutes.. you cant get more free... this is steel bearings as well.... i have run my bearing for prolly 6 months and they still run as free as the day i got them...

valve lube can be purchased at any music store.... it is valve lube for trumpets, and other wind instruments... valve lube alone works killer.. but it is almost to thin.... so to help it last longer i mix the marvel in...

also running your bearing with no lube, over time will damage them.. they wil tend to get hotter, and will groove the metal.. after a period of time, there will be more and more slop, or play in the bearing.. they may still spin free, but with the car on the track being thrown back and forth as you drive it will cause friction..

when you check your bearings, i always check for slop. the inside of the baering should not be loose in the shroud.. if it is, it will need to be replaced soon...

when you buy a new set of bearing they are generally packed with a heavy grease.. they do this so they last longer.. they tend to be very smooth, but not as free... i soak all my bearings in a cleaner, that breaks down the grease.... clean them out really good, then put in a light oil. they will spin forever...

Last edited by burbs; 01-30-2005 at 09:38 AM.
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Old 01-30-2005, 01:58 PM   #23
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So, to summarize:

* Thinner oils give the bearing a lower COF in the short run, but the oil isn't as heat-tolerant and spins out/dries out faster, requiring more frequent maintenance.

* Thicker oils put more rolling resistance into the bearing, but stay in the bearing longer and keep the bearing in better shape for a longer time.

I haven't heard much about this yet, except to get the oil everywhere in the bearing, but has anyone ever considered this: given that molecules are still bumping into each other and causing some friction and therefore heat, no matter what oil you use, wouldn't it make sense to use something thicker, as in the "normal" temperature band that your bearings are likely to encounter (freezing to about 140F MAX), most oils and lubes get thinner as the temperature increases? Motor oil gets thicker as the temperature gets higher, but that happens beyond the temperatures even your motor would produce. Find something that starts thick enough to stay in the bearing, and as you do your warm-up runs it thins out to give freer action, but still stick around in the bearing for the entire race. I heard sewing machine oil, and that's about the average thickness you want when its room temperature, but I'm not sure if it thins enough when warm. You might also consider a silicone lube. The change in thickness for some of these is staggering in only a 30 degree difference.
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Old 01-30-2005, 03:24 PM   #24
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Liko,

Good summary, and pretty much spot on.
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Old 01-30-2005, 04:35 PM   #25
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Quote:
Originally posted by burbs
Marvel <a style='text-decoration: none; border-bottom: 3px double;' href="http://www.serverlogic3.com/lm/rtl3.asp?si=23&k=air%20tool" onmouseover="window.status='air tool'; return true;" onmouseout="window.status=''; return true;">air tool</a> oil is very thin... i use Marvel air tool oil, mixed with valve lube oil... after 17 years of racing, this is the hands down best combination i have ever seen.. ive tried everything posible out there... I run pan cars..my rear axle with this combo spins for over 3 minutes.. you cant get more free... this is steel bearings as well.... i have run my bearing for prolly 6 months and they still run as free as the day i got them...

valve lube can be purchased at any <a style='text-decoration: none; border-bottom: 3px double;' href="http://www.serverlogic3.com/lm/rtl3.asp?si=23&k=music%20store" onmouseover="window.status='music store'; return true;" onmouseout="window.status=''; return true;">music store</a>.... it is valve lube for trumpets, and other wind instruments... valve lube alone works killer.. but it is almost to thin.... so to help it last longer i mix the marvel in...

also running your bearing with no lube, over time will damage them.. they wil tend to get hotter, and will groove the metal.. after a period of time, there will be more and more slop, or play in the bearing.. they may still spin free, but with the car on the track being thrown back and forth as you drive it will cause friction..

when you check your bearings, i always check for slop. the inside of the baering should not be loose in the shroud.. if it is, it will need to be replaced soon...

when you buy a new set of bearing they are generally packed with a heavy grease.. they do this so they last longer.. they tend to be very smooth, but not as free... i soak all my bearings in a cleaner, that breaks down the grease.... clean them out really good, then put in a light oil. they will spin forever...
It just so happens that I play trumpet so I have some valve oil on my hands. About what is the ratio of valve oil mixed with the Marvel air tool oil?
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Old 01-30-2005, 10:49 PM   #26
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Why is it so many ppl think that because the bearing spins freely in their hands, it will be faster on the track? If you honestly belive that, clean your bearings and DON'T oil them. Thats as free as they can get.

You WILL loose performance with an oil that is too light.
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Old 01-30-2005, 11:14 PM   #27
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50 /50
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Old 01-30-2005, 11:21 PM   #28
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Quote:
Originally posted by burbs
50 /50
I'm going to try this burbs and you DAMN WELL better be right

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Old 01-30-2005, 11:33 PM   #29
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Btw... if the thinner oil remains in the bearing, it does not hurt the performance... if you use an oil that is way to thin, and after a run or so the bearing is dry, then yes it can hurt..

A baering that spins more free has less rolling resistance,,, this does help performance..

when a bearing is run with no lube, they wear out faster..thinner oil requires more oiling, but if you do it right it is better...

valve lube oil is water based... it dries and turns into a wax type substance... this stays on the bearing when the bearing starts to spin it thins out again and rolls super smooth and free..


make sure it is marvel air tool oil.. it is thiner then the other marvel oils... or just use the valve lube alone...trust me it works...
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Old 01-31-2005, 12:49 AM   #30
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I heard this through the grape-vine.....and have employed it into all my cars. Take your bearings apart (take one shield off), and remove all lubes, greas, and what-not from inside the bearing with motor spray or whatever. make sure they are completely dry.....

Then, take MOTHERS or BLUE MAGIC polish and cram your bearings full of the stuff....I just take the bearing, open side facing down and press it directly into the polish. Its gonna be messy!....with the polish still all over your bearings, re-install them back into your car.....its gonna be messy!....then go run your car up and down the street for about 5 minutes. Your car will be a mess!....Take them all out of the car, hose em' off, re-install them and you'll have the free-est drive train you've ever had!.....But remember, this will be a messy project!....if you have the time and patience on your hands, once you clean them out after the first polishing, do the whole thing again just to make sure.

After the polish, I put a VERY small amount of LITE oil in the bearing. like 1 drop then spin the bearing to spread it out. The combination of oil and polish makes for a very free and long wear drive-train.

I deffinately suggest you try this out.
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