Re: Gravel Gearing....again
Posted: Mon May 18, 2020 6:12 pm
The way I see it is the bike carries my lard..I’m not bothered about the speed. If I was bothered about the speed I would spend a lot of time being bothered...
https://bearbonesbikepacking.co.uk/phpBB3/
https://bearbonesbikepacking.co.uk/phpBB3/viewtopic.php?t=17061
I am hoping to setup some kind of touring company there...the tracks are endless. Now if could just get back from the UK that would be nice!The Cumbrian wrote: ↑Mon May 18, 2020 5:53 pmLovely place to live. I went on holiday there in 2015 and loved it.bluebus200 wrote: ↑Mon May 18, 2020 4:52 pm My lowest is a 30/40 combo front/back....yes you spin. But If you can get a fully loaded bike up the hills where I live (Asturias, northern Spain, think Cornwall x snowdonia) you deserve some kind of meddle and probably a knee operation. Yes you could walk, but spinning is more energy efficient and imo much easier. It all depends on your terrain...
3BFA3009-DE1E-4FB8-9B96-DC5F08C7BDED by Chris Harris, on Flickr
https://www.bikecalc.com/gear_inches
Dunno about you, but if it's steep enough to get off, I won't be walking uphill at 4mph (Naismiths Rule is 3mph on the flat), especially not while pushing a, potentially loaded, bike.
There's a few folk running 40x cassettes on 2x systems (me included). I use 50/34 105 cranks and a Ultegra rear mech. It's very likely that GRX cranks and rear mech would work too, I've just not tried it.BigdummySteve wrote: ↑Mon May 18, 2020 6:18 pm it was interesting to see on Bikepacking.com that GRX Di2 can cope with a 40 cassette on 2X with some work.
My current 2x system replaced a 3x plus 11/34T one I was using previously.Jurassic wrote: ↑Mon May 18, 2020 6:29 pm I was talking to a friend recently who is a dyed in the wool "pannier tourist" and he's still running 3x to get the range of ratios he wants. They resort to non mainstream equipment suppliers like Spa Cycles to provide "touring" chainsets. You'd think between tourers and gravel riders there would be enough demand for a low gear, wide ratio set up without resorting to DIY options. I think the UScentric view of gravel bikes as race bikes (for gravel) is partly to blame. I'm currently toiling to get my mtb front mech to work reliably with the new GRX shifter that I've just installed.
I am running mateDunno about you, but if it's steep enough to get off, I won't be walking uphill at 4mph
Just literally installed a 50/34 chain set with a Ultegra r8000 rear derailleur, 11-40 cassette, runs fine.ScotRoutes wrote: ↑Mon May 18, 2020 6:31 pmThere's a few folk running 40x cassettes on 2x systems (me included). I use 50/34 105 cranks and a Ultegra rear mech. It's very likely that GRX cranks and rear mech would work too, I've just not tried it.BigdummySteve wrote: ↑Mon May 18, 2020 6:18 pm it was interesting to see on Bikepacking.com that GRX Di2 can cope with a 40 cassette on 2X with some work.
Shimano are notoriously conservative with their specifications.
My current 2x system replaced a 3x plus 11/34T one I was using previously.
James I run 42/28 on an slx chain set using a cx series front mech and it works great with road shifters.jameso wrote: ↑Tue May 19, 2020 6:56 am Good luck... I've been asking for a super-compact chainset for drop bars for over a decade now, since before the first Shimano drop-bar disc brakes appeared on the Croix de Fer In that time we've gone from 32-50T to GRX 30-46... clearly I have zero influence there so maybe you can help me/us all out. All I want is a 28-42 and a side-swing front mech to go with it.
Yes it can be done, I have an option of XTR 30-42 or XT 28-40 chainsets here and use bar-end shifters to free up my options, but both cranks are MTB wider Q-factor. Not a massive problem but not what I'd take out of choice, esp for longer road trips. I just think it's well past time that there were better options in that area that are optimised for road / gravel bikes. Too much of the Billy Big Ring bollocks in road riding..James I run 42/28 on an slx chain set using a cx series front mech and it works great with road shifters.
It does.. but if I commented would I be Billy Big Ring talking bollocks? Also to be fair 38-50 on a gravel bike is still a few gears higher than 22-36 on a 26" bike.Makes you think,
That's good, the trick of using a road triple with a guard on the outer ring position. I've wondered about using some of those aftermarket tabs to finish it off neatly i/o the chainguard. I rode with a guy for a few hours on the TINAT 600 who used a 30-42-52 105 HT2 set up that way minus the outer ring. Think I've mentioned him before here RE gearing, a really strong climber who'd ridden a sub-50hr PBP and was going for it again last year, his take was that the further you ride the less you want big gears. I was quite inspired by that, been a fan of the rev-limiting approach for a while but hadn't seen it used on a fast audax bike before to that kind of effect. 42 is OK for me on road but most will want a bit higher.spa cycles are doing some interesting super compacts... Cheaply too..