Singlespeed & Fixed Gear - using OIL instead of GREASE to LUBE TRACK HUBS

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teadoggg
02-25-06, 08:09 PM
I know some people who race use some sort of oil to lube the hubs instead of grease, for less friction.
On my race wheels (7600 Dura Ace hubs) I'm going to take the grease seal and the dust cover off permanently, and want to use oil to lube it all up. I have no problem with the gobs of maintence this setup will incur, so don't tell me about it. I'm looking for the smoothest possible, no friction setup.
Anyway, what kind of Oil should I use? does anyone have any experience with this?
baxtefer
02-25-06, 08:15 PM
sewing machine oil used to be the lube of choice for what you're describing.
but geez, that's going to be messy and a huge waste of time. you're basically going to have to relube them *daily*
adamkell
02-25-06, 08:51 PM
daily... or everytime you go out to the track. do it tdogg. you can re-oil them while standing on the winner's podium.
ultraman6970
02-25-06, 08:53 PM
I heard bad ideas and that one... good luck with it :) r u traning to for jiffy lube in a near future???
:p
spider-man
02-25-06, 08:54 PM
The blingingest oil I can think of is Phil Tenacious.
My boss used to do this back in the 80s...
Personally, I overhauled my DA 7600 hubs with Slick Honey, which is the pimpest lube I can possibly imagine. I think oil would be a pain in the ass.
brunning
02-25-06, 10:18 PM
using lighter oil to lube bearings is not uncommon for a good set of track racing wheels. the stuff burns through quickly, so as posted above, you've gotta relube often, but the rolling resistance is lowered.
you'll destroy your hubs by riding like this on the streets.
teadoggg
02-25-06, 10:34 PM
oh no no no, I've another set of DA hubs for street. This is for my race set, so I have no problem with lubing them up every time I go out there. these race wheels will only see the track. i've got a a couple sets of clinchers for the street, and other tubies i'll be training on. I want to do the no seal/oil trick for track races only.
chimblysweep
02-25-06, 10:36 PM
t,
you might get better answers from the hardcore kids on the track forum...
teadoggg
02-25-06, 10:37 PM
do it tdogg. you can re-oil them while standing on the winner's podium.
yes! exactly!
but hopefully, I'll have [165] lubing them for me after I smoke him. he's good at, er, lubing my parts.
teadoggg
02-25-06, 10:38 PM
t,
you might get better answers from the hardcore kids on the track forum...
yeah, I was going to ask there, but the kids on this forum seem to know all sorts of crazy stuff.
This used to be popular in the 70's. Two big problems usually arose. First, the oil tended to dry up and made a rather gummy mess. Today you can get around that in part with a modern oil like TriFlow (or even a 1:1 mixture of TriFlow and any heavier oil like the Phil Tenacious mentioned above, or simply a good synthetic 10W50).
The bigger problem was that people would squirt oil into their hubs, get on the track, and either start dripping oil at the starting line while they were being held prior to an event, or would spew it all over as they went onto the bankings. Referees quickly outlawed the practice.
There were then some studies that showed that a light coat of grease worked just as well under load and avoided any of these problems. The trick is to not use too much, and to adjust your bearings exactly right. After a couple years, the practice disappeared.
It's a messy, useless practice in my book, and track is about efficiency. You don't do things to endanger other riders, and this isn't even what anyone on the track would consider a trick or bling practice -- it's just a brief fad that never came back. So why bother?
techone
02-26-06, 01:13 AM
Use light machine oil or sewing machine oil.
Removing one ballbearing from each side is an old trick as well. But I don't think that's very good for the hubs.
yeah it doesnt seem like a very good idea for track safety.
Oh, and by the way, when the oil ran out, it tended more than anything to flow down the spokes under centrifugal force and coat your own tires with oil. The results were predictable, and rather personal. You may have brought down the rest of the field, but you were usually assured of being on the bottom of the pile with someone's chainring in your leg and their handlebar end in your liver. A practice better off not practiced.
teadoggg
02-26-06, 06:33 AM
hmmmm. thanks for the info, 11.4
-=(8)=-
02-26-06, 07:22 AM
Which oil weighs less ?
Rodador
02-26-06, 08:01 AM
I remember this practice from the mid-80's, chiefly in connection with time trials. Believers removed one bearing from each side and lubed with WD-40. Seemed like an excellent way to ruin expensive equipment to me. I don't remember any evidence of a clear advantage. More importantly, though, the disadvantages that 11.4 points out could have some pretty heavy consequences.
I'm fast becoming a serious 11.4 fan. Knowledgeable and commonsense answers. Thanks, 11.4!
Yes, my boss also told me they removed a bearing from each side along with adding oil. While he doesn't strike me as a fad guy, he may have been prone to hype in his younger track days..
Ooooh. It's time to get nerdy!
I just flipped open my copy of Bicycling Science - 2nd Ed and got these for friction coefficients:
Hubs/BB/Pedals: .01-.005 Each
Tire on a track: .004 Each
Aerodynamic Drag Coefficient: .9
So aerodynamic drag has ~90x the effect that your hubs have.
I would add that taking the dust caps and eliminating the grease seal allows small particles free entry into your very nice and smooth bearings/races - a track is not a clean room.
I would work on your aero position first.
LóFarkas
02-26-06, 08:39 AM
Getting more aero may well be impossible without access to a wind tunnel, compromising power output (i.e. ****ing up your position on the bike) or spending an obscene amount of money on new parts. I guess everyone in here knows aerodynamic drag is the biggest speed limiting factor, so prolly teadogg has done his homework as well.
It looks like the oil thing is not feasible, though... maybe a thinner grease, applied sparingly?
Landgolier
02-26-06, 08:49 AM
I was BSing about this with my bike guru, he was a pro-level wrench when this was en vogue and said you will go through more bearings than you can possibly imagine, both from actual wear and from replacing them just to be safe.
A somewhat related topic, the freewheel on my winter beater/commuter kept freezing up at temps below -10º F and the pawls would get stuck. I cleaned all of the grease out and re-lubed it with Finish Line chainlube. (The "wet" stuff designed for dirty environments) It's a bit thicker, and doesn't seen to drip out, yet it hasn't frozen up yet and I've ridden down to -20 or so.
spider-man
02-26-06, 10:16 AM
A somewhat related topic, the freewheel on my winter beater/commuter kept freezing up at temps below -10º F and the pawls would get stuck. I cleaned all of the grease out and re-lubed it with Finish Line chainlube. (The "wet" stuff designed for dirty environments) It's a bit thicker, and doesn't seen to drip out, yet it hasn't frozen up yet and I've ridden down to -20 or so.
I knew guys who would do the same thing in Fairbanks, Alaska, when I lived up there.
AfterThisNap
02-26-06, 12:25 PM
Want SUUUUUPER smooth hubs for an hour or so? This is how some cat1 guys and tour racers did it on significant races. Lose the seals, keep all your bearings. Use oil of coice and then retightnen your races.
After the race, blow out all the old oil/dirt with automotive starting fluid, which will clean everything out instantly and dry in less than a minute. Relube as necessary.
Obvious downsides are increased maintinance intervals (everytime you ride), but using the ether to clean them out eliminates the need to actually rebuild them each ride.
The molecular shear strength of grease is what creates a "cushion" between the bearings and the race. Oil is either a significantly smaller molecule chain, or without the additives to create a complex that makes an emulsified grease, so the molecules are more prone to shear= less protection between moving parts.
This is also the reason why you can percieve an increase in "smoothness". Greases either have longer chain molecules, or are oils complexed with emulsifiers with long chain hydrocarbon tails that stick to each other. Oils, with short chains or without binding agents are freer at the molecular level, thus metal surfaces coated with oil move freer.
It's kind of a fisher price explanation, but that's the thick and thin (har har) of it.
I´m not one for recommending this either.
But the most hi tech oil is this stuff : www.delta-bikeoil.com
And don´t take my word for it, ask team CSC. They are mad for those little corners to shave.. ceramic bearings, carbonrims ..and delta oil..
The sales rep. is a legend in these parts, once you´ve seen his schtick you´re convinced about this oil..:)
Landgolier
02-26-06, 04:10 PM
Yeah, grease gets gooey and gummy when it's butt-azz cold out. On really arctic days in chicago you get kind of delayed reaction shifting on a geared bike with long housing runs.
visitordesign
02-26-06, 04:56 PM
brokeback it and use spit.
treechunk
02-26-06, 04:59 PM
Yeah, grease gets gooey and gummy when it's butt-azz cold out. On really arctic days in chicago you get kind of delayed reaction shifting on a geared bike with long housing runs.
I hate that shizz. Dri-slide Bike-Aid works pretty well on cables with a tendency to do that.
The talltandem I built had about a 5 minuite delay on the shifting. It was really kinda wierd. You'd shift, and about three blocks later, it would shift all of a sudden. It's really hard to know when to shift if you've got a five minuite lag.
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