Thanks, it may well be that this ring is made from softer aluminum than the others -- Sugino as well as other brands -- I've used. As for Phil bb bearings, I've had good luck, but I would have tried a SKF if they came with 130 mm spindles. Apparently the cheap Stronglight JP400 ($28, plastic cups, but should fit Phil and Shimano cups) have good bearings and it comes in a 131; might buy one of those in addition to the refurbishment of the Phil bb.
On Sat, Aug 5, 2023 at 1:59 AM ascpgh <asc....@gmail.com> wrote: > Chainrings have varied for me by price. Cheaper stamped (softer) aluminum > ones seem like they have the hardness and wear of a Hershey product. I've > been amazed by the durability of the harder alloy TA rings since I got my > Rambouillet built with Zephyr cranks with them. I have only changed rings > for tooth count necessity when going from triple to wide double. Same for > the Phil Wood BB, I switched to an SKF when doing the triple-wide double > conversion because having built a commuter with a PW based on my good > results with the Ram's PW BB that only lasted one winter. For comparable > money I chose the SKF with lots of seals. Ten years on both the SKF and TA > 46-34 rings. Three years so far on my Coast rando RH 46-30 rings and SKF BB > without signs of wear. I sold the commuter a couple years ago with the > UN-51 BB I tossed in to replace the PW while I got the bearings serviced. > It kept on surviving through the rains and winters with its simple rubber > grommet "seals" and the PW's send away repair became a very back burner > task. > > I have a low threshold for replacing chains and but follow your current > maintenance process mostly using ProLink Gold. I refuse to let a chain be > dear to me if it wears, too many nice parts (chainrings) to waste if they > go too far. > > Andy Cheatham > Pittsburgh > > On Friday, August 4, 2023 at 7:39:11 PM UTC-4 Patrick Moore wrote: > >> I was surprised to see the degree of hooking on this 42 t Sugino ring >> when I went to replace it t'other day for a 44. It has about 3800 miles on >> it, no more than half ridden on ditchbank roads and trails with very fine, >> river-silt sand. I've used Sugino rings for years, on pavement and on the >> same ditchbank routes, tho' usually 46 t or bigger, and I don't think I've >> seen wear this fast. >> >> The installed-new Phil bb bearing assembly with the same miles also was >> dry and rough; not notchy but certainly not greasy-smooth. I've used Phil >> crank bearings for years, pavement and similar pavement/dirt use, and get >> at least 2X the miles. >> >> Questions for you other sand riders: >> >> 1. What mileage do you expect from a smallish chainring, and ditto for a >> good quality crank bearing assembly? In what riding conditions? >> >> 1 bis: What mileage do you expect from Phil bb bearings? In ditto? >> >> 2. How often do you clean your drivetrain and lube your chains? And: >> >> 3. Describe your drivetrain and chain maintenance regimen. >> >> No more than halfway thru said 3.8K miles I switched to mane-at-Analog's >> chain maintenance method: wipe thoroughly, lube sparingly with dry lube >> (ProLink, Purple somethingwhatever, etc) wipe, let dry, wipe again very >> thoroughly). >> >> Until perhaps 1.5 or 2K into this drivetrain I'd been using Molten Speed >> Wax in a crockpot, and I used paraffin and crockpots for my earlier >> Sugino-ring drivetrains. Waxed chains don't collect dust. >> >> >>> Might the accelerated ring wear be due to a poorer lube method? >> >> OTOH, what accounts for such rapid Phil bb bearing wear? >> >> Please excuse the typical bad photos. I do try hard and several times but >> to no avail. >> >> Thanks. >> >> -- >> >> ----------------------------------------------------------------------- >> Patrick Moore >> Alburquerque, Nuevo Mexico, Etats Unis d'Amerique, Orbis Terrarum >> >> -- > You received this message because you are subscribed to the Google Groups > "RBW Owners Bunch" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to rbw-owners-bunch+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/rbw-owners-bunch/789e29f8-09c5-4a2e-a12b-12669e3f2d46n%40googlegroups.com > <https://groups.google.com/d/msgid/rbw-owners-bunch/789e29f8-09c5-4a2e-a12b-12669e3f2d46n%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- ----------------------------------------------------------------------- Patrick Moore Alburquerque, Nuevo Mexico, Etats Unis d'Amerique, Orbis Terrarum -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To unsubscribe from this group and stop receiving emails from it, send an email to rbw-owners-bunch+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/rbw-owners-bunch/CALuTfgsUWktCiN8EimEuXs0AZ7sy%3D9VJ3mpRYvFFN2mL3KJNFg%40mail.gmail.com.
