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2020 Specialized Rockhopper Expert 1x 23.74lbs
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Discussion starter · #1 · (Edited)
So i have a 2020 Specialized Rockhopper Expert 1x that i am going to upgrade. I have ordered a SRAM GX Eagle crankset with a DUB bottom bracket with It's own tool.

Now before I get to the fun part I need to know how to remove the stock "stout" crankset & bb that comes with the bike originally.

Can anyone definitively tell which exact tools i would need so i can order them? I don't want to order a bunch of tools that i am not going to need. Just the ones specifically for this crankset.

Thanks in advance.
 
So i have a 2020 Specialized Rockhopper Expert 1x that i am going to upgrade. I have ordered a SRAM GX Eagle crankset with a DUB bottom bracket with It's own tool.

Now before I get to the fun part I need to know how to remove the stock "stout" crankset that comes with the bike originally.

Can anyone definitively tell which exact tools i would need so i can order them? I don't want to order a bunch of tools that i am not going to need. Just the ones specifically for this crankset.

Thanks in advance.
You might not need to buy anything.
Not definitively but maybe helpful....
At least some of the recent cranks are self-extracting, i.e., you just need a regular/common hex key. As you turn the hex key, the cranks will self-extract.

You might have to remove a small dust cap first... If so, that'd be just another regular/common hex key.

Source: Me and my 2019 Fuse, which has Stout cranks I've removed before.
 
Discussion starter · #3 ·
You might not need to buy anything.
Not definitively but maybe helpful....
At least some of the recent cranks are self-extracting, i.e., you just need a regular/common hex key. As you turn the hex key, the cranks will self-extract.

You might have to remove a small dust cap first... If so, that'd be just another regular/common hex key.

Source: Me and my 2019 Fuse, which has Stout cranks I've removed before.
Oh ok that would be very easy. Thanks for you input.

Also I will be removing the bb & installing a new DUB bb. Did you ever remove the square taper bb underneath the stout crankset? Would you know if it is the common 20 tooth bb remover bit?
 
Oh ok that would be very easy. Thanks for you input.

Also I will be removing the bb & installing a new DUB bb. Did you ever remove the square taper bb underneath the stout crankset? Would you know if it is the common 20 tooth bb remover bit?
I did remove my bb (i replaced it with a Wheel Mfg threaded bb).
I imagine your bb is press fit, as mine was. Everything should be very easy to remove, EXCEPT for getting the press fit cups out of each side of the frame. I suggest watching some YouTubes for that. Fortunately, not too difficult.
 
Discussion starter · #5 ·
I did remove my bb (i replaced it with a Wheel Mfg threaded bb).
I imagine your bb is press fit, as mine was. Everything should be very easy to remove, EXCEPT for getting the press fit cups out of each side of the frame. I suggest watching some YouTubes for that. Fortunately, not too difficult.
Thanks. I actually have watched literally every single crank & bb video on youtube. Been researching for months now. The thing is none of them show this actual "stout" crankset & bb removal, that's why I am asking on here or i wouldn't even need to resort to it.

I ordered this Amazon.com : Oumers Bike Crank Extractor/Arm Remover and Bottom Bracket Remover with 16mm Spanner/Wrench. Professional Bicycle Repair Tool Kit : Sports & Outdoors

I'd imagine It might be the tool I need. Sure looks just like that 20 teeth design bb to me when I look at it. Wasn't entirely sure though because I haven't taken it apart yet. If I'm lucky It will be the standard square taper style removal, I hope lol.

Also, If it is "press fit" do i have the right tools? or would i need other tools?
 
Thanks. I actually have watched literally every single crank & bb video on youtube. Been researching for months now. The thing is none of them show this actual "stout" crankset & bb removal, that's why I am asking on here or i wouldn't even need to resort to it.

I ordered this Amazon.com : Oumers Bike Crank Extractor/Arm Remover and Bottom Bracket Remover with 16mm Spanner/Wrench. Professional Bicycle Repair Tool Kit : Sports & Outdoors

I'd imagine It might be the tool I need. Sure looks just like that 20 teeth design bb to me when I look at it. Wasn't entirely sure though because I haven't taken it apart yet. If I'm lucky It will be the standard square taper style removal, I hope lol.

Also, If it is "press fit" do i have the right tools? or would i need other tools?
I really don't know anything about the Stout crankset but I did stumble on this thread a while back, maybe it is relevant to you and may help?

 
Discussion starter · #8 ·
I really don't know anything about the Stout crankset but I did stumble on this thread a while back, maybe it is relevant to you and may help?

Thank you for your response. I have actually seen this thread. That crankset is the older "stout xc" crankset with a different bottom bracket as well.
His issue was some sort of galling where the metals were bonded to each other a bit. Mine is a new 2020 Rockhopper Expert 1x which has the newer "stout xc" crankset that has the 30t chainring welded or riveted on to the driveside crank making it impossible to swap out. Which is the whole reason why I am going to install the SRAM GX Eagle crankset with SRAM DUB bottom bracket with a SRAM 28t chainring changing it all at once. 2 weeks till the parts arrive in the mail. I will report back here when I get it all said and done. Should be interesting.
 
Sorry Pal, long shot and a tricky one especially with no youtube clips to check. Have read somewhere that the spindle on a Stout crankset is a bigger diameter than usual?

Is it a square taper bb or press fit? Afaik if it's a press fit bb it can't be square taper but a two piece crankset with a hollow spindle?

If it needs a bb removal tool is it press fit or threaded? As @J_Westy suggests, some pics could really help as on the whole something isn't adding up.

Could be a ISIS spline puller of some kind you might need with a wider end piece to get crank arm off?🤔
 
Discussion starter · #10 ·
Sorry Pal, long shot and a tricky one especially with no youtube clips to check. Have read somewhere that the spindle on a Stout crankset is a bigger diameter than usual?

Is it a square taper bb or press fit? Afaik if it's a press fit bb it can't be square taper but a two piece crankset with a hollow spindle?

If it needs a bb removal tool is it press fit or threaded? As @J_Westy suggests, some pics could really help as on the whole something isn't adding up.

Could be a ISIS spline puller of some kind you might need with a wider end piece to get crank arm off?🤔
On the Specialized website it says

BOTTOM BRACKET:
Square-tapered, 73mm, internal bearings

I think I am going to attempt to loosen the hex bolts on the crank arms and gently see what's going on maaaaybe see if I can take one of the crank arms. The thing is I am just hesitant because not only is this the first time I am removing a crankset/bottom bracket but the tricky part is I don't exactly know which type of bottom bracket it actually is. Even though I have watched 100 tutorials I need to do It one time. Once I do it I can do it again & again.

As soon as i get into it tomorrow and see what I discover I will report back my findings here.
 
On the Specialized website it says

BOTTOM BRACKET:
Square-tapered, 73mm, internal bearings

I think I am going to attempt to loosen the hex bolts on the crank arms and gently see what's going on maaaaybe see if I can take one of the crank arms. The thing is I am just hesitant because not only is this the first time I am removing a crankset/bottom bracket but the tricky part is I don't exactly know which type of bottom bracket it actually is. Even though I have watched 100 tutorials I need to do It one time. Once I do it I can do it again & again.

As soon as i get into it tomorrow and see what I discover I will report back my findings here.
Bottom brackets/spindles/cranks can be one of the more confusing parts abt bikes, since so many different standards.

Fortunately, you might be in good shape. As I mentioned earlier (i know lots of info/posts have flown back and forth, though), if your Stout cranks are self-extracting like mine, you'll find the crank arms separate automatically as you undo the hex. Note: one of the crank arms will have the spindle permanently attached, if like mine.
 
Agree with the above, lots of different standards. It will take some good force to get the crank arm to initially break away from the spindle, this is quite normal especially if they've been on for a few years.

The only thing I'd respectfully disagree on is both cranks should need removing separately and one side won't be permanently attached to the spindle. A square taper crankset is classed as a 3 piece and it's Hollowtech II type that are classed as two piece with one side permanently attached to a hollow axle.

The confusion was it can't be a press fit bb for square taper cranks.

You have an internal cartridge unit fitted into your bike which has a 73mm width threaded bb shell.

Once you get the cranks off as has already been mentioned the non drive side bb cup undoes clockwise and the tools you ordered are the right ones for the job but the crank extractor won't be needed if you have self extracting bolts.

The non drive side cup loosening clockwise means that you have a very common 73mm BSA or English threaded bb similar to this:-

1910322


Plenty of You Tube clips you've already seen are relevant to your set up so should be easy enough Pal.😎👍
 
The thing is I am just hesitant because not only is this the first time I am removing a crankset/bottom bracket but the tricky part is I don't exactly know which type of bottom bracket it actually is.
Take some pictures and we'll point you in the right direction.
 
i look forward to as much practical details as possible on the overall process since i'm interested to switch my daughter's 2021 bella rockhopper over to 1x later this summer :)

she got a really great looking bike for Christmas despite the lack of bike stock, but it could use a couple changes to make it easier, better.
 
Discussion starter · #16 · (Edited)
Thank you for everyone's responses. I appreciate it.

I was able to successfully remove the cranks today. They used the tools i bought. You turn the main bolt in after taking the 8mm caps off, then you screw the pushing bolt through as it extracts the crank arms one by one. I needed to use a tremendous amount of force. As in there was no way i was going to remove them without using a extension pry bar or hammer to have enough force to crank the arms out. I am still surprised at how difficult it was for me to get them off. I would imagine this being intimidating enough for some to quit halfway without a lot of determination & extra big tools also willing to take a bold chance of using excessive force in hopes that it comes off without breaking anything or tearing the threads off the cranks or extractor bolts.

After slaying that dragon, i now have come to the final boss- the bottom bracket. It is the presumed 20 tooth traditional square taper design that i will attempt to remove with the proper 20 tooth removal tool with a big pipe wrench.

I will report my results after I complete the second portion of the crankset/bottom bracket removal process which is removing the bottom bracket on this 2020 Rockhopper Expert 1x "stout xc" crank/bb.
 
After slaying that dragon, i now have come to the final boss- the bottom bracket. It is the presumed 20 tooth traditional square taper design that i will attempt to remove with the proper 20 tooth removal tool with a big pipe wrench.
Don't forget that the threads on the DS are left hand - especially if you are using a big pipe wrench !
 
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