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Thread: Ask the experts
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01-07-2022, 08:51 PM #6701Registered User
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01-07-2022, 10:07 PM #6702Not a skibum
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^^ same. Have used liquid soap applied to bead and rim as well for good results.
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01-08-2022, 08:50 AM #6703Registered User
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01-08-2022, 09:05 AM #6704
I'm surprised how rarely anyone says "heat up the tires first." I changed some motorcycle tires this summer and between dish soap on the bead and an hour laying in the sun, the giant tire irons weren't even necessary. This time of year, keeping the rims cold should be easy.
A woman came up to me and said "I'd like to poison your mind
with wrong ideas that appeal to you, though I am not unkind."
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01-08-2022, 09:55 PM #6705
I stopped by Commencal in Squamish today and pedalled the medium Absolut around inside the showroom. The size felt pretty good, though the front end felt low. I’d definitely try some higher rise bars. Obviously these are very preliminary impressions, and I’d have to give the bike a proper try.
Last edited by D(C); 01-08-2022 at 11:03 PM.
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01-10-2022, 09:04 AM #6706
I want to convert my 2016 Beargrease fatbike to a 1x. How do you figure out the spacing for the chainring? Do you buy new cranks or can you use the original? And what else don't I know?...aside from everything.
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01-10-2022, 10:45 AM #6707
1) what kind of chainring mount do your existing cranks have? Will the cranks take a direct mount ring, or do you have to mount to a spider? Note that some cranks have a spider, but the spider can be removed so a direct mount ring can be attached.
If direct mount is an option, you'll have a bit more flexibility - you can get rings with different offsets (0mm, 3mm and 6mm are fairly common), and those rings can be run either "forward" or "backward" to get the offset inward or outward. If direct mount isn't an option, then you mostly just need to decide which side of the spider you're going to mount to. If you're mounting to a spider, you can also space the chainring out from the spider (which will require longer bolts and a spacer kit).
2) Look at your bottom bracket. Are there spacers? Are the spacers on the drive or non drive side? Swapping those spacers will shift your cranks and chainring (usually 2.5mm per spacer) in one direction or the other.
3) Shift your chain into the middle of the cassette and sight down the chain from the rear. It should be pretty close to a straight line to your chainring. If it's straight, great - that's where you want your new chainring to be; buy accordingly. If it's not straight, use the available adjustments in #1 and 2 to get the chainring where it needs to be so the chainline is as straight as possible.
4) If your adjustments require moving the chainring inboard, be careful you don't run into clearance issues with the chainstay. Also, if you spend the vast majority of your time at one end of the cassette or the other, you can consider spacing the chainring in or out to have your chainline be straighter in the gears you're usually in. This means that your chain will be extra not-straight at the other end of the cassette though.
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01-10-2022, 11:12 AM #6708
^ thank you so much!
Surely I will fuck this all up! Live and learn!
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01-10-2022, 12:26 PM #6709
random q - anyone have a good hack/option for bike trainer use with a 20 or 16 inch tire? Would love to get my kids doing some pedal practice in the winter, but doesn't seem to be much out there.
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01-10-2022, 12:28 PM #6710
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01-10-2022, 01:15 PM #6711Not a skibum
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I had an old Cyclops Fluid and they make an adapter for 16/20" though I found even the lowest fluid resistance was pretty tough for them, so didn't get used often. The roller suggestion is likely a better one, hacked something for novelty for my daughter, but wouldn't expect too much in my experience. Think the longest one kid lasted on Zwift was ~10 minutes.
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01-10-2022, 02:15 PM #6712
My kids have a lot of fun pedaling on a 16" bike mounted in Cycleops Fluid2. Bike has just has axle bolt ends or whatever you call it. Tire doesn't even come close to touching the resistance unit. I don't know or care if this a "correct" solution, the kids have a lot of fun with it. If you want to add some resistance, I bet a bit of brake drag would be plenty for a kid.
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01-10-2022, 02:57 PM #6713Registered User
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Just let em learn to ride rollers for real - they'll pick it up after a few wipeouts. Then have them try no hands.
Could use a direct drive ("wheel off") trainer with something to raise the front wheel more than usual. Also makes it easier to deal with knobby tires. And an excuse to upgrade your trainer.
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01-10-2022, 03:23 PM #6714
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01-10-2022, 03:37 PM #6715Registered User
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Any parent who really wants to be unreasonable needs to get their kid a 16" spawn, the kid will ride further faster and the bike will have great resale
Last edited by XXX-er; 01-10-2022 at 05:52 PM.
Lee Lau - xxx-er is the laziest Asian canuck I know
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01-10-2022, 07:09 PM #6716
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01-10-2022, 08:17 PM #6717
Yeah, I break trail a lot, so granny gear is key. But once it gets packed it really does become fast or faster. As a reference many strava koms at places like Fort Rock are from winter snow rides. We have a lot of rock and roots. Snow creates a buff paved highway when conditions are perfect.
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01-11-2022, 04:44 PM #6718
New bike (GG Gnarvana) is setup for 180mm rear rotor using IS mount. Swapping the wheels over from my old bike before I sell it. Old wheels have 200mm rotors. Am I just brain fogged or can I not find an IS adaptor to allow for 200mm rear rotor?
Edit: nevermind....I see I need a 60mm IS to bring the rear up to 200mm.
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01-11-2022, 05:10 PM #6719Registered User
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- Feb 2014
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Don't forget to redish the wheels.
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01-11-2022, 05:29 PM #6720
Had a grand old time sourcing a IS adapter to make Hayes brakes work on the Gnarvana with the pile of 203 rotors I have on hand... Then I read about re-dishing the wheel. Then I found a seized bearing in my not very old frame.
Good thing it's ski season and I can dabble with the build for a couple hours here and there or I'd be pissed!"Your wife being mad is temporary, but pow turns do not get unmade" - mallwalker the wise
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01-11-2022, 06:21 PM #6721
Redish wheels? Huh?
I've moved wheels from bike to bike all kinds of times. These are stiff carbon wheels.
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01-11-2022, 06:27 PM #6722
Ask the experts
You are selling the SB150??
Oops…. Just see the for sale thread right below this! Too small unfortunately!!
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01-11-2022, 06:28 PM #6723
Dummy priced.
https://www.pinkbike.com/buysell/3240896/
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01-11-2022, 07:24 PM #6724
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01-11-2022, 07:58 PM #6725
Very interesting and I have never heard of this with any other bikes I have had. I guess the dudes at the shop would know how to do this? Is it easy to re-dish a wheel at home? I have spoke wrenches etc. I work on every part of my bike, but never fuck with wheel building.
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