Your cassette may exceed the capacity of the derailleur.
bonebuttonborscht on
Yep, as long it shifts well, there’s not any slack in the smallest cog and upper pulley isn’t running to the largest cog, you’re all set.
JasperJ on
It could even be a little shorter without necessarily being a problem, maybe, but yes this is fine.
WasteResearch7701 on
There’s a difference between suspension and hardtail when it comes to this and I see this is a hardtail. So I’d recommend simply to head over to [si.shimano.com](http://si.shimano.com) and punch in the derailleur number so you’ll find the recommendation from Shimano themselves. The number is written on the back of the derailleur, and most likely it will be RD-M5100 you can punch into the left search field there. RD standards for Rear Derailleur and M is just a basic shimano prefix.
Size the chain the way shimano suggests and you will not have to question it. That looks short to me.
shroomsmoke on
That looks damn close to me, if not correct.
DarkestBadger on
I just put the chain on the smallest cog and make sure the deraileur has tension 🤷
usually the chain breaker has a little piece of metal wire to hold the chain together while finding the correct size.
FabulousCoconut4097 on
Yes, you want a 45 degree angle of the biggest gear.
Domowoi on
Yep, to get the range you need you will need the full capacity of the deraileur. Since it’s a hardtail, you can make it so short that it has a tiny amount of play in that setting and you will be fine.
Mindless-Baker-7757 on
If you want you can size it to be just short enough.Â
Dry_Librarian544 on
Nice cranks
rehpotsirhc123 on
Side note: Temu / Ali nock off 5 Dev-style cranks are dangerous. I was on a social / group mountain bike ride last summer and a literal 70 pound child had his crank snap off right through pedal hole, and this was just pedaling along not hitting jumps or anything. 5DEV has had this same issue on their earlier designs, and they’re a USA company that also machines parts for aerospace not some Chinese manufacturer making things as cheaply as possible. I certainly wouldn’t trust them.
13 Comments
Yes
Your cassette may exceed the capacity of the derailleur.
Yep, as long it shifts well, there’s not any slack in the smallest cog and upper pulley isn’t running to the largest cog, you’re all set.
It could even be a little shorter without necessarily being a problem, maybe, but yes this is fine.
There’s a difference between suspension and hardtail when it comes to this and I see this is a hardtail. So I’d recommend simply to head over to [si.shimano.com](http://si.shimano.com) and punch in the derailleur number so you’ll find the recommendation from Shimano themselves. The number is written on the back of the derailleur, and most likely it will be RD-M5100 you can punch into the left search field there. RD standards for Rear Derailleur and M is just a basic shimano prefix.
https://preview.redd.it/q7fkurwum28h1.jpeg?width=1220&format=pjpg&auto=webp&s=c6fb16cc74a24845837c59ed18daf0a6dc71780c
Found it…
Size the chain the way shimano suggests and you will not have to question it. That looks short to me.
That looks damn close to me, if not correct.
I just put the chain on the smallest cog and make sure the deraileur has tension 🤷
usually the chain breaker has a little piece of metal wire to hold the chain together while finding the correct size.
Yes, you want a 45 degree angle of the biggest gear.
Yep, to get the range you need you will need the full capacity of the deraileur. Since it’s a hardtail, you can make it so short that it has a tiny amount of play in that setting and you will be fine.
If you want you can size it to be just short enough.Â
Nice cranks
Side note: Temu / Ali nock off 5 Dev-style cranks are dangerous. I was on a social / group mountain bike ride last summer and a literal 70 pound child had his crank snap off right through pedal hole, and this was just pedaling along not hitting jumps or anything. 5DEV has had this same issue on their earlier designs, and they’re a USA company that also machines parts for aerospace not some Chinese manufacturer making things as cheaply as possible. I certainly wouldn’t trust them.