When you design a thing that uses bearings, you design it around off the shelf bearings. It's cheaper and easier, even for Honda. Bearings are very seldom the limiting factor in a machine.
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Wheel bearings
- Thread starter Fuzzbuster
- Start date
Fuzzbuster
Well-known member
I just simply entered the year, make and model and whammo the bearings arrived at my door!
Mad Mike
Well-known member
Excusemewhst? You are correct the Cs are internal clearance differences - but it’s not that simple. This internal clearance on a C3 is greater than a standard bearing when there is no interference fit of the installed bearing. When a a bearing is pressed on or in (interference fit) the OD may be reduced and/or the ID increased as the pressure of the fit stretches or shrinks out all or part of the extra internal clearance.
There are other reasons for using C1-4 bearing's, that are not interference fit, (high/low heat, speed, lifespan, ergonomics…). In these cases the ID and OD would not be different. A lot of MC applications are interference fit.
There are also prefixes that denote materials, for instance a stainless 6203 might be listed as, SS6203, S6203, 6203 S.
Gaoler
Well-known member
You could buy a bearing puller kit... I got one via Amazon that wasn't very expensive.
It worked well and made removal easy.
Install was easy.
I put the new bearings into the freezer for a couple of hours, warmed up the rim a bit with a hot air gun and inserted the bearings and tapped them in using a "bearing tapper inner" tool I bought a PA.
Mad Mike
Well-known member
It doesn’t. But if you press a regular bearing on a shaft, the inner race expands, reducing clearance. Same when you press a bearing oute in, the outer race compresses out some/all the additional clearance. That, and extreme temps heat, main reason for the C variants. There are other obscure reasons too.
If you compressing a standard bearing on both sides it can bind, which increases starting force, rolling resistance, and reduces top speed, capacity and lifespan. Mileage varies by application, no big deal in an office chair wheel, may be a big deal on a motor shaft running 20,000 rpm.
Fuzzbuster
Well-known member
Which one did you buy? There are a bunch on there?
TK4
Well-known member
here's a dimension chart -
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Wow! Thanks @bitzz
Looks like the stems have the same ODs. The outside dimensions of the neck of the frame look like the stems could be similar in length. This is very promising. Thanks again.
Mad Mike
Well-known member
Grease nipple? If that's in a bearing buddy you won't be able to unscrew it. Those grease fittings run thru a stamped steel cap, they are either press fit and staked, or pipe thread with a custom one use backing nut. You can drill the Zerk out from the back, but finding a replacement might be hard.
New bearing buddies are cheap, $18 a pair Amazon, sometimes as low as $10/pair at PA.
This is it.
Pre-Greased 3.5K Hub-Drum Kit | K08-247-1G | Dexter Axle Online Store
Pre-Greased 3.5K Hub-Drum Kit(K08-247-1G) - For 3.5K axle, 5 on 4-1/2" Wheel Bolt Center, studded, 1/2"-20, 1.718" seal, greased with bearings, & E-Z Lube® Grease Caps.CLICK HERE TO PURCHASE FROM DEXTER DISTRIBUTION | Hubs, Drums, & Rotors-Pre-Greased Hubs | Dexter Axle Online Store
www.dexteraxle.com
Is this an axle with the grease nipple threaded into the axleThis is it.
Pre-Greased 3.5K Hub-Drum Kit | K08-247-1G | Dexter Axle Online Store
Pre-Greased 3.5K Hub-Drum Kit(K08-247-1G) - For 3.5K axle, 5 on 4-1/2" Wheel Bolt Center, studded, 1/2"-20, 1.718" seal, greased with bearings, & E-Z Lube® Grease Caps.CLICK HERE TO PURCHASE FROM DEXTER DISTRIBUTION | Hubs, Drums, & Rotors-Pre-Greased Hubs | Dexter Axle Online Store
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You have to look it up in a chart. All of the bearing manufacturers have one (and given the industry-standardisation, they all contain the same information, although some might be easier to use than others).
Mad Mike
Well-known member
What's the motivation for the graft?
Standard GL1100 dual disks had a hard time stopping the bike, the vented Aspencades were a touch better. I couldn't lockup CB750 single disk on my CB750.
When the world gives you lemons , make lemonaid. Turns out the Wings I bought were too much work to make road worthy so I'm building another Wing based drag bike.
Trying to lighten up the front end some. There's plenty of run off past the trap to slow a Wing down even with iffy brakes.....
Trying to lighten up the front end some. There's plenty of run off past the trap to slow a Wing down even with iffy brakes.....
Fuzzbuster
Well-known member
Well, it appears the suspect bearing is the unsealed sprocket carrier bearing. I took the wheel off again to start the job and fingered all the bearings. The wheel bearings are super smooth, the sprocket carrier bearing is rough. I believe the rims and bearings are low mileage because it appears there has only been one tire change. I have several sets of these rims and carriers. I think I mixed up a higher mileage carrier with low mileage rims. So I am going to switch out the carrier bearings and test it out to see if that solves the issue.
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