New biker bought a used Trek Xcaliber 7 (2016) chainset issue

Im a newbie biker (haven't biked since 20 years).
I bought a very used Trek Xcaliber 7 2016 model.
Now I took it to the bike shop the guy said it needs a new chainset as the teeth are worn. They were quoting me silly money to fix it like £200 (with a new chain), and said I best off buying a new bike. Is it hard to change ?
Which one do I need ? I found some on eBay under "Shimano C/SET Acera M3000 oct 40/30/22 9s 175 | 40 / 30 / 22 teeth" is this the correct one ?
Heres pic of my chainset.
I bought a very used Trek Xcaliber 7 2016 model.
Now I took it to the bike shop the guy said it needs a new chainset as the teeth are worn. They were quoting me silly money to fix it like £200 (with a new chain), and said I best off buying a new bike. Is it hard to change ?
Which one do I need ? I found some on eBay under "Shimano C/SET Acera M3000 oct 40/30/22 9s 175 | 40 / 30 / 22 teeth" is this the correct one ?
Heres pic of my chainset.

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You can get a Shimano Deore for about £50-60, easy DIY job (tools will cost a max of £25) and a chain for about £10...... And you'll have the tools for the next job!
retired 9.6kg Carrera Kraken
The Carrera Hardtail combined thread - come on all you Carrera's!
The Sons Scott Genius RC20 build
There is no secret ingredient - Kung Fu Panda
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Depending on what chainset you currently have you may be able to simply replace the chain rings rather than the whole chainset. (I can't see the picture you posted.)
Oh, and find another LBS that won't try and rip you off.
And it all promised so so much”
Giant Trance 2 27.5 2016 ¦ Sonder Broken Road 2021¦ Giant Revolt Advanced 2 2019 ¦ Giant Anthem 3 2015 ¦ Specialized Myka Comp FSR 2009
There is no secret ingredient - Kung Fu Panda
London Calling on Facebook
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Currently its got on it a "Shimano 175mm FC-M391" Crankset. Is it likely to have an Octolink BB ?
Im thinking of replacing it with :
Shimano Deore FC-M442 Octalink Mountain Bike Crankset 44X32X22 9 Speed 175mm
Here:
http://www.ebay.co.uk/itm/Shimano-Deore ... SwCQNWeb7d
Would this fit ?
Ill fit the new cassette and chain myself.
Your options will work but look around on this site for cassettes as there are good recommendations depending on the terrain you will use them on. Maybe you could, if you have not done so, consider a 1x set up with one ring in the front and 9, 10 or 11 at the back. It is a simpler option, reduces weight by an amount that I'd consider to be un noticable and immunises you from front shifter problems - which in fairness are rare in my experience. In fairness I've converted all of mine and prefer the 1x set up.
jeez :roll:
Complete set with BB and lighter than octalink - from halfords as well.
http://www.ebay.co.uk/itm/Shimano-FC-M5 ... SwyjBW3VYu
retired 9.6kg Carrera Kraken
The Carrera Hardtail combined thread - come on all you Carrera's!
The Sons Scott Genius RC20 build
Bit of an update! You never guess what happened.
I fitted the new cassette and new chain myself. Everything was going to smoothly.
I added a new seat, grips.. then I took it to Halfords to fit the Crank set.
They fitted it... They didnt call me. So I called them they say its been done, so I go there,
and they cant find the bike! They had me waiting for 30 mins looking for it.
So they paid for my taxi and said thell search the next day.. come next day... they said its gone, they dont have it.
So there you have it... some one nicked it or they gave to to some one.
They said manager said I can have a like for like bike.
Ive not conversed with them yet as I was busy all day today. Might go in tomorrow.
http://www.halfords.com/cycling/bikes/m ... nsion-27-5
retired 9.6kg Carrera Kraken
The Carrera Hardtail combined thread - come on all you Carrera's!
The Sons Scott Genius RC20 build
Make sure you get a suitable replacement though, can you list the full spec of the bike that went missing?
That will be important when negotiating a replacement, and people on here can advise whether they are pulling a fast one or not.
If they can't match it a cash settlement might be a better option.
Bird Aeris 120 | Boardman Team 650b | Boardman Pro FS | Calibre Two.two
http://www.halfords.com/cycling/bikes/m ... ntain-bike
or
http://www.halfords.com/cycling/bikes/m ... -29er-2016
or something else ?
retired 9.6kg Carrera Kraken
The Carrera Hardtail combined thread - come on all you Carrera's!
The Sons Scott Genius RC20 build
So that's what Im riding now.
I do notice the tyres are a little slower on the roads so im thinking of changing them (maybe I should have got a road bike).
retired 9.6kg Carrera Kraken
The Carrera Hardtail combined thread - come on all you Carrera's!
The Sons Scott Genius RC20 build
They tried to offer me £300 at first.
2011 Specialized Hardrock Sport Disc (son #3s)
2013 Decathlon Triban 3 (red) (mine)
2019 Hoy Bonaly 26" Disc (son #2s)
2018 Voodoo Bizango (mine)
2018 Voodoo Maji (wife's)
retired 9.6kg Carrera Kraken
The Carrera Hardtail combined thread - come on all you Carrera's!
The Sons Scott Genius RC20 build
2011 Specialized Hardrock Sport Disc (son #3s)
2013 Decathlon Triban 3 (red) (mine)
2019 Hoy Bonaly 26" Disc (son #2s)
2018 Voodoo Bizango (mine)
2018 Voodoo Maji (wife's)
They should have offered a bike of higher value than what you had. Not only did you spend money on it to improve the grips etc, but the hassle of chasing and travelling to the store should be taken into account.
Worse case you could argue theft as your property wasn't returned to you.
Vengeance - http://www.bikeradar.com/forums/viewtopic.php?f=10017&t=12897374&p=19829658&hilit=installed#p19829658
Some of the gear, less than no idea...
To take something to a store and not only not get the work done, or done well is bad enough but to then be told your property has gone missing is quite frankly unacceptable.
Plus you would think a brand like Halfords wouldn't want to get a bad reputation for stuff like this, its not the first time its happened.
Vengeance - http://www.bikeradar.com/forums/viewtopic.php?f=10017&t=12897374&p=19829658&hilit=installed#p19829658
Some of the gear, less than no idea...
Its not a bad bike, the tyres are much slower than what I had.
But its very comfy compared to the Trek. Event though I had a 17.5 /18.5 Trek, its seemed bigger. I tried the 20" Voodoo and it seemed smaller than the Trek.
Sorry, but by now (well, at the time) I would be spitting feathers. At the very least the £125 should be refunded.
Vengeance - http://www.bikeradar.com/forums/viewtopic.php?f=10017&t=12897374&p=19829658&hilit=installed#p19829658
Some of the gear, less than no idea...
I found my stolen bike again !!
Story as follows..
I went into town and I saw it on the high street. I didnt know who put it there but it was locked to a bin.
So I phoned the police, they said wait by the bike someone will be there... come 30mins.. no police and no culprit.
I get impatient.. phone again and they say if the culprit arrives phone again, as im in town center they have the CCTV guy watching me. OK I said.. I decide to pop in a store and buy 2 of my own locks and lock it. Now its triple locked.
So I go home and come back 45 mins later.. what do I see.. two guys and one guy confused at how "his" bike is locked. I confront him, he cant speak English and is a little drunk. They don't put up a fight so he pretty much gives me his key and I unlock it and take his lock off. He walks away.
Then, as I attempt to undo my locks I put the wrong key in it (don't know which key belongs to which lock yet) and it instantly breaks in the lock. I try to use pliers but it only pushes it in further. I go home looking for tools to try and get it off but cant find anything suitable. Find a hack saw and go to try it out.
Well as im going back to the bike, I find some firemen and talk to them and tell them the story. They said theyll help after I give them ID and proof of ownership + crime reference number.
When I get the info, they try to break the lock.. they try various tools.. most fail lock isnt scratched and is just taunting us.
They get the heavy jaws of life out and finally break it and take it to their local fire station (dont ask thats another story).
BTW: I left out the guy being arrested by the police but he wasn't the thief, he bought the bike.
I also filmed some of it and the fire brigade failing on the lock lol
There is no secret ingredient - Kung Fu Panda
London Calling on Facebook
Parktools
retired 9.6kg Carrera Kraken
The Carrera Hardtail combined thread - come on all you Carrera's!
The Sons Scott Genius RC20 build
How it happened to get stolen from Halfords though, who knows, if I was the store manager I would be very interested in how it went missing in the first place and I'd be stepping up my stock control! Sounds like one of the staff must have had something to do with it unless they are in the habit of leaving customers bikes outside in the open.