Dork disk for 46t MTB cassette?
#1
Dork disk for 46t MTB cassette?
Finally! My chain slipped and got stuck between the spokes for the first time.I was going up a very steep hill, changing the gear way too late, heavy pedalling through the quick shift of 3-4 gears in one go. Not intentionally, just happened. Always worked, but there is always a first time.
The chain was properly stuck, took me 30 minutes to release it without tools. Luckily managed to fix it, I was lucky and there was no damage to the bike.
So... Do dork disks for 46t cassettes exist? Any recommendations?
The chain was properly stuck, took me 30 minutes to release it without tools. Luckily managed to fix it, I was lucky and there was no damage to the bike.
So... Do dork disks for 46t cassettes exist? Any recommendations?
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#2
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“Recommendations ?” Change gear sooner
sorry had to be said
Barry
sorry had to be said
Barry
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Finally! My chain slipped and got stuck between the spokes for the first time.I was going up a very steep hill, changing the gear way too late, heavy pedalling through the quick shift of 3-4 gears in one go. Not intentionally, just happened. Always worked, but there is always a first time.
The chain was properly stuck, took me 30 minutes to release it without tools. Luckily managed to fix it, I was lucky and there was no damage to the bike.
So... Do dork disks for 46t cassettes exist? Any recommendations?
The chain was properly stuck, took me 30 minutes to release it without tools. Luckily managed to fix it, I was lucky and there was no damage to the bike.
So... Do dork disks for 46t cassettes exist? Any recommendations?
An external scrape or two is ok, but any sharp bending and/or gouges with burrs means you should replace those outbound spokes.
search: "Spoke guard for Bicycle" on ama-Zone or Fleabay... they list the overall diameters in the ads, or they should. Spoke Count plays into fit, btw... 36 count uses a 3 tab mounting.. 32 spokes uses a 4 tab mounting system... and drilling holes to use zip ties is not unheard of with lower or higher spoke count wheels. "Freewheel" types don't usually work on Cassette hubs....
Oh.. and CHECK YOUR DERAILLEUR ALIGNMENT..that is the typical cause of chains munching spokes.
Last edited by maddog34; 05-27-23 at 11:24 AM.
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Check your derailleur and hanger alignment, make sure your limit screws are set properly and maintain your bike well and you won't have those issues and if you do a plastic disc(or disk) is unlikely to do much as you have probably crashed or hit your derailleur on something. I have had plenty of issues with spoke protectors but never a situation where one has helped at all. Maybe an old school metal one might help but I wouldn't bother. If your limits are set properly and everything is aligned it would be really tough to have a problem. My old school 8 speed XT derailleur (running 9) on a 1X set up gets shifted poorly often and is a bike I do let others ride (which is rare and it is one of my favorite bikes which is even more crazy) but everything is set correctly and given some maintenance and I haven't had any chain coming off issues at all and I have intentionally tried to do some bad shifting on it just to see if I could and no dice.
I would also recommend working on your shifting. I am not a great shifter truth be told so I am not judging anyone but trying to work on it will help.
I would as maddog34 remove the cassette and check the spokes it is hard to assess damage without assessing all the potential damage areas.
I would also recommend working on your shifting. I am not a great shifter truth be told so I am not judging anyone but trying to work on it will help.
I would as maddog34 remove the cassette and check the spokes it is hard to assess damage without assessing all the potential damage areas.
#5
"no damage", huh? didja Remove The Cassette and Look At The SPOKES..? If the chain was stuck as badly as you mention, guess what took the brunt of that force....
An external scrape or two is ok, but any sharp bending and/or gouges with burrs means you should replace those outbound spokes.
An external scrape or two is ok, but any sharp bending and/or gouges with burrs means you should replace those outbound spokes.
Thanks, I just built this bike from scratch and did the alignment before installing the derailleur. Maybe it somehow got out of whack. It's more likely the high-low screws aren't properly done.
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#7
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Probably have to make your own out of a 3/lb. margarine/potato salad tub lid.
Don't you love when you admit you shifted late and others have to tell you how to shift?
Put a few pieces of reflective tape on it and you could have the elliptical-spiral effect like your wheel reflectors
Don't you love when you admit you shifted late and others have to tell you how to shift?
Put a few pieces of reflective tape on it and you could have the elliptical-spiral effect like your wheel reflectors
Last edited by Bill Kapaun; 05-27-23 at 04:33 PM.
#8
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In my defence, I was trying to avoid being hit by a speeding car on a narrow road in a field, had to cycle through nettles and bushes as a result. Got a bit distracted from the correct shifting technique. Also, my all other bikes are quite forgiving, I can pedal through any gear change uphill on them, so wasn't expecting this to happen.
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the damage to spokes happens near the hub, not out further on the spokes... get a large one with the proper mounting pattern for your bike and all will be ok
with a low gear like on your bike, the guard does NOT have to extend past the largest sprocket to do it's job... it only needs to shunt the chain away from the base of the spokes.
with a low gear like on your bike, the guard does NOT have to extend past the largest sprocket to do it's job... it only needs to shunt the chain away from the base of the spokes.
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and if you insist on preventing the derailleur from tangling with your overgeared mtb spokes... search this on ebay.... Bike Spoke Protector Cover WI-7149-235.
however, it will NOT protect the spokes at the hub, which is where they get damaged by an overshifted chain.... add a normal sized spoke protectorto the biggest dork disc i've ever seen to prevent worry.
you're installing a burglar alarm after the break-in and theft.
however, it will NOT protect the spokes at the hub, which is where they get damaged by an overshifted chain.... add a normal sized spoke protectorto the biggest dork disc i've ever seen to prevent worry.
you're installing a burglar alarm after the break-in and theft.
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#11
and if you insist on preventing the derailleur from tangling with your overgeared mtb spokes... search this on ebay.... Bike Spoke Protector Cover WI-7149-235.
however, it will NOT protect the spokes at the hub, which is where they get damaged by an overshifted chain.... add a normal sized spoke protectorto the biggest dork disc i've ever seen to prevent worry.
you're installing a burglar alarm after the break-in and theft.
however, it will NOT protect the spokes at the hub, which is where they get damaged by an overshifted chain.... add a normal sized spoke protectorto the biggest dork disc i've ever seen to prevent worry.
you're installing a burglar alarm after the break-in and theft.
Thanks, that's the model to find, great.
I'm confused though, why it won't protect the wheel/spokes? Isn't it going to prevent the chain from slipping at all?
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and your massive 50t gear sets how far away from the spokes at it's maximum diameter...???
PS.. the chain didn't "Slip".. it OVER-SHIFTED.
Last edited by maddog34; 05-28-23 at 09:55 AM.
#13
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#14
Senior Member
Gee, i don't know either... maybe BECAUSE IT'S A BIG OPEN RING instead of a disc that protects further towards the hub and the base of the spokes...
and your massive 50t gear sets how far away from the spokes at it's maximum diameter...???
PS.. the chain didn't "Slip".. it OVER-SHIFTED.
and your massive 50t gear sets how far away from the spokes at it's maximum diameter...???
PS.. the chain didn't "Slip".. it OVER-SHIFTED.
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https://www.modernbike.com/sunlite-s...36-1.375-x-7.5
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#16
As usual, there are two ways to address the problem
- Preventing
- Mitigating the results
#1 is obvious, pretty much everyone on this forum is intelligent enough to understand that avoiding car accidents is the best way to prevent the injury, avoiding overshifts is the best way to prevent the wheel damage.
Surprisingly there are quite a few forum members that think otherwise. Anyway, since their intentions are good, I give them kudos anyway. Well done, thank you!
Anyway, since "S..t Happens" I am focusing on #2 and I use the words that describe what happens after ovesshifting.
I'm now compelled to rephrase my question though. So.. Is anyone aware of "dork disk"-like device that works with 11-46t cassete and
- Either effectively prevent chain slipping
- Or effectively prevents it from causing further damage when it slips
Last edited by alexk_il; 05-29-23 at 07:07 AM.
#17
Senior Member
Chain slipping is a result of ovesshifting. Similarly to whiplash injury that is caused by car accidents.
As usual, there are two ways to address the problem
#1 is obvious, pretty much everyone on this forum is intelligent enough to understand that avoiding car accidents is the best way to prevent the injury, avoiding overshifts is the best way to prevent the wheel damage.
Surprisingly there are quite a few forum members that think otherwise. Anyway, since their intentions are good, I give them kudos anyway. Well done, thank you!
Anyway, since "S..t Happens" I am focusing on #2 and I use the words that describe what happens after ovesshifting.
I'm now compelled to rephrase my question though. So.. Is anyone aware of "dork disk"-like device that works with 11-46t cassete and
As usual, there are two ways to address the problem
- Preventing
- Mitigating the results
#1 is obvious, pretty much everyone on this forum is intelligent enough to understand that avoiding car accidents is the best way to prevent the injury, avoiding overshifts is the best way to prevent the wheel damage.
Surprisingly there are quite a few forum members that think otherwise. Anyway, since their intentions are good, I give them kudos anyway. Well done, thank you!
Anyway, since "S..t Happens" I am focusing on #2 and I use the words that describe what happens after ovesshifting.
I'm now compelled to rephrase my question though. So.. Is anyone aware of "dork disk"-like device that works with 11-46t cassete and
- Either effectively prevent chain slipping
- Or effectively prevents it from causing further damage when it slips
AeroJacket Disc Cover is that product today. For around $90, Wheelbuilder will take the measurements you provide of your rear wheel and build a cover out of a thick, semi-flexible plastic that screws together just below the rim and has a single-sided cutout for the valve stem, coverable by a specially-cut sticker. If you lose that sticker don’t worry, because Wheelbuilder sends a spare and extras are available for cheap in their store.
https://wheelbuilder.com/aerojacket-disc-cover/
Or if you really want to get crazy, make one out of a nylon sheet and zip tie it
https://www.amazon.com/Clear-Flexibl.../dp/B00BOUUX6G
Last edited by Schweinhund; 05-29-23 at 07:23 AM.
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#18
Senior Member
Visit your bike shop, they may have some. Spoke protectors come with new bikes that have 51t cassettes, surely one of these will work if you can't find a specific 46t.
#19
Senior Member
Finally! My chain slipped and got stuck between the spokes for the first time.I was going up a very steep hill, changing the gear way too late, heavy pedalling through the quick shift of 3-4 gears in one go. Not intentionally, just happened. Always worked, but there is always a first time.
The chain was properly stuck, took me 30 minutes to release it without tools. Luckily managed to fix it, I was lucky and there was no damage to the bike.
So... Do dork disks for 46t cassettes exist? Any recommendations?
The chain was properly stuck, took me 30 minutes to release it without tools. Luckily managed to fix it, I was lucky and there was no damage to the bike.
So... Do dork disks for 46t cassettes exist? Any recommendations?
Set your derailleur stops by eyeball before installing a cable or chain.
Set them a bit short and then do your final adjustment after installing the cable and chain.
Before you ride, EVERY TIME, inspect for problems.
A dork disk won't help if you bend the lower cage or hanger towards the wheel, Unless you've got one like I linked to. It's gonna get sucked into your spokes.
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I love dork disks, and reflectors too, but honestly the best prevention is proaction.
Set your derailleur stops by eyeball before installing a cable or chain.
Set them a bit short and then do your final adjustment after installing the cable and chain.
Before you ride, EVERY TIME, inspect for problems.
A dork disk won't help if you bend the lower cage or hanger towards the wheel, Unless you've got one like I linked to. It's gonna get sucked into your spokes.
Set your derailleur stops by eyeball before installing a cable or chain.
Set them a bit short and then do your final adjustment after installing the cable and chain.
Before you ride, EVERY TIME, inspect for problems.
A dork disk won't help if you bend the lower cage or hanger towards the wheel, Unless you've got one like I linked to. It's gonna get sucked into your spokes.
as to bike reflectors, i have a couple/three hundred that i'm planning to mount onto one rim, then aim a 3 color party laser at it and spin up a cloud of random light beams on a foggy night....... .
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one of my first questions to a person complaining of a badly shifting bike.. "have you ever dropped the bike on the right side, or crashed recently?"
They almost always answer "No!",,, so i then show them the scrape marks on their derailleur knuckles, as i laugh internally. They listen much more accurately after that, and the ego preservation usually ceases too.... if they pause and contemplate before answering, no matter the answer, i believe them more frequently.
i had a "Power" derailleur in here that had stripped out limit threads... the heads of both screws showed no sign of abuse... factory "tolerances", i guess? Power is also in the running for "worst bike parts" awards, along with DNR and C-Star. Most Power rear Ders are too sloppy from the factory to repeatedly shift gears when indexed...Their front ders are copies of the Shimano design that was too stiff for most people to get to move from it's relaxed, resting position, with a twist shifter... the bottom pull lever on the der is shaped to position the clamp screw nearly directly above the cable pull line....
how does an engineer mess up a simple bell crank?
ask Power, they could tell ya!....
They almost always answer "No!",,, so i then show them the scrape marks on their derailleur knuckles, as i laugh internally. They listen much more accurately after that, and the ego preservation usually ceases too.... if they pause and contemplate before answering, no matter the answer, i believe them more frequently.
i had a "Power" derailleur in here that had stripped out limit threads... the heads of both screws showed no sign of abuse... factory "tolerances", i guess? Power is also in the running for "worst bike parts" awards, along with DNR and C-Star. Most Power rear Ders are too sloppy from the factory to repeatedly shift gears when indexed...Their front ders are copies of the Shimano design that was too stiff for most people to get to move from it's relaxed, resting position, with a twist shifter... the bottom pull lever on the der is shaped to position the clamp screw nearly directly above the cable pull line....
how does an engineer mess up a simple bell crank?
ask Power, they could tell ya!....
Last edited by maddog34; 05-29-23 at 01:38 PM.
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#23
one of my first questions to a person complaining of a badly shifting bike.. "have you ever dropped the bike on the right side, or crashed recently?"
They almost always answer "No!",,, so i then show them the scrape marks on their derailleur knuckles, as i laugh internally. They listen much more accurately after that, and the ego preservation usually ceases too.... if they pause and contemplate before answering, no matter the answer, i believe them more frequently.
They almost always answer "No!",,, so i then show them the scrape marks on their derailleur knuckles, as i laugh internally. They listen much more accurately after that, and the ego preservation usually ceases too.... if they pause and contemplate before answering, no matter the answer, i believe them more frequently.
Anyway, I am confident none of these accidents has ever happened to the most experienced cyclists on this forum, but I have already accepted that my skills are unlikely to improve to the point of a complete avoidance of cycling, steering or shifting mistakes.
Last edited by alexk_il; 05-29-23 at 06:19 PM.
#24
Or I might have messed up my screw limits. My dyi bike is completely out of specs, I have Ultegra road 2x brifters shifting MTB FD and RD with 40/26t and 11-46t. I'm sure it creates a lot of stress for RD, maybe getting to a point of smooth shifting across all gears potentially requires a tiny bit of overshifting. Not sure, could be either my mistake or a price to pay for that combo to work.
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