Author Topic: Suitable Kit was Diversity was : AUK CHAIRMAN ST  (Read 6407 times)


Re: Suitable Kit was Diversity was : AUK CHAIRMAN ST
« Reply #101 on: January 12, 2019, 04:05:49 pm »
https://store.interlocracing.com/irddewicorod.html

IRD Defiant Wide Compact Road Double Crank Set (46-30T)

4 lengths
Quote
This is a 46-30t crankset, something that many touring and randonneuring cyclists have played with, but very few maker have mass produced them.

This double combo gives you almost as much gearing as a triple, but with less weight and less shifting.

If you have a 11-32t in the back, you can spend almost all your time in the big ring and only shift to the 30t on extended climbs.

- 94BCD / 46-30t 7075 aluminum chainrings

- 6061 cold forged aluminum arms

- High polished anodized finish throughout

- JIS square taper BB required (118mm)

- Q-factor: 143mm



Grand Cru 50.4 BCD Crankset
https://velo-orange.com/collections/cranks/products/grand-cru-50-4bcd-crankset-mkii

IanN

  • Voon
Re: Suitable Kit was Diversity was : AUK CHAIRMAN ST
« Reply #102 on: January 12, 2019, 05:21:02 pm »
30-46 seems like a quite a jump (to me). Obviously it works, though.

110 BCD does allow 33/46,  34/46, 34/44 etc. - with a 11-34 this covers the range of my triples.
Unladen, 1:1 low gear is OK for me. For now  ;D

The 10 speed shimano CX chainsets (36/46) swapping in a 34 were a mainstream option - I think the 11 speed CX chainsets are 36-48.  :-\



mattc

  • n.b. have grown beard since photo taken
    • Didcot Audaxes
Re: Suitable Kit was Diversity was : AUK CHAIRMAN ST
« Reply #103 on: January 12, 2019, 05:33:30 pm »
30-46 seems like a quite a jump (to me). Obviously it works, though.
Well 34-50 is hugely popular, and not much smaller a jump! But then I think these wide gap doubles are absurd when triples are tried-n-tested technology ...
Has never ridden RAAM
---------
No.11  Because of the great host of those who dislike the least appearance of "swank " when they travel the roads and lanes. - From Kuklos' 39 Articles

Karla

  • car(e) free
    • Lost Byway - a Pacific bike ride
Re: Suitable Kit was Diversity was : AUK CHAIRMAN ST
« Reply #104 on: January 12, 2019, 06:17:32 pm »
... and available in a Tiagra road-spaced groupset too!

Karla (who has never been a member of a "TT club")

Cudzoziemiec

  • Solar powered, tea fuelled cycle-wol
Re: Suitable Kit was Diversity was : AUK CHAIRMAN ST
« Reply #105 on: January 12, 2019, 06:43:01 pm »
... and available in a Tiagra road-spaced groupset too!

Karla (who has never been a member of a "TT club")
There's a whole world between the extremes of TT and AA!
The earth is vast and beautiful and contains many miraculous places. (Chekhov)

quixoticgeek

  • Mostly Harmless
Re: Suitable Kit was Diversity was : AUK CHAIRMAN ST
« Reply #106 on: January 13, 2019, 10:37:11 pm »


So of all of those suggested, only the FSA seem to be a 'Modern' style with integrated spindle, for external bearing bottom brackets, and even then only their own BB. No easy drop in replacement for a Shimano chainset.

As for the triple:

a) Not available with electronic shifting

b) only available to Tiagra level.

c) looked down upon by many a gatekeeping wanker.

I noticed this article (linked below a review of some pedals I was reading).

https://www.cyclingweekly.com/videos/cycling-tech/compact-chainset-dead

It dates from last april, and seems to imply that replacing an 11-25 cassette that's paired with a 50/34 crankset, with a 52/36, and an 11-28 cassette. I read it and just want to scream. Some of the men seem to be thinking that the 50/34 doesn't have much use if you have a wider cassette. It seems to ignore that there are many of us screaming out for a 46/30 to bridge the gap between the MTB and the Road setups.

I'm not saying every bike only needs a 46/30, but I wish it was more of a choice off the peg, and with mainstream manufacturers without having to massively change the rest of the bike (triples).

I wonder what design advantage there is from having a spider that only goes down to 34t, vs one that could go down to 30t...

J
--
Beer, bikes, and backpacking
http://b.42q.eu/

Karla

  • car(e) free
    • Lost Byway - a Pacific bike ride
Re: Suitable Kit was Diversity was : AUK CHAIRMAN ST
« Reply #107 on: January 14, 2019, 03:24:18 am »
So faced with a choice between AbsoluteBlack, FSA, Sugino or Praxis, you've found problems with each one.  Well done, you've discovered how kit choice works.  Shimano will probably follow the trend in a couple of years but until then you'll have to stop being sniffy about Tiagra, triples, square taper BBs and/or mechanical shifting.

(While we're at it, I'd love it if manufacturers still made 8 speed brifters.  You know what though?  I realise I'm in a minority.)

Carlosfandango

  • Yours fragrantly.
Re: Suitable Kit was Diversity was : AUK CHAIRMAN ST
« Reply #108 on: January 14, 2019, 02:40:44 pm »


So of all of those suggested, only the FSA seem to be a 'Modern' style with integrated spindle, for external bearing bottom brackets, and even then only their own BB. No easy drop in replacement for a Shimano chainset

J

The Sugino fits straight into a Shimano, Hope or Sugino 24mm bottom bracket. I've got one and used all 3.

 I don't see why you can't use electronic gears with it.

quixoticgeek

  • Mostly Harmless
Re: Suitable Kit was Diversity was : AUK CHAIRMAN ST
« Reply #109 on: January 14, 2019, 03:38:04 pm »


So of all of those suggested, only the FSA seem to be a 'Modern' style with integrated spindle, for external bearing bottom brackets, and even then only their own BB. No easy drop in replacement for a Shimano chainset

J

The Sugino fits straight into a Shimano, Hope or Sugino 24mm bottom bracket. I've got one and used all 3.

 I don't see why you can't use electronic gears with it.

But it's discontinued, so unless you can track down stock in the few places still with it, and pay the 300 quid for it. Not really practical.

Would be a great option otherwise.

J
--
Beer, bikes, and backpacking
http://b.42q.eu/

Carlosfandango

  • Yours fragrantly.
Re: Suitable Kit was Diversity was : AUK CHAIRMAN ST
« Reply #110 on: January 14, 2019, 03:46:15 pm »
How about Absolute Black chainrings to fit a Shimano four arm crankset?

To be honest, at the moment it's specialist, short production run components that we want to fit another manufacturers products. It's gonna be pricey.




Re: Suitable Kit was Diversity was : AUK CHAIRMAN ST
« Reply #111 on: January 14, 2019, 10:14:50 pm »
How about Absolute Black chainrings to fit a Shimano four arm crankset?

To be honest, at the moment it's specialist, short production run components that we want to fit another manufacturers products. It's gonna be pricey.
Not too pricey compared with other options.
I got AbsoluteBlack 46/30 rings & new R7000 chainset for sub£200  - and still hoping to get a bit back on the redundant 50/34 rings.
I did find the 46 ring a bit trying in yesterday's wind, but would probably have been slower overall if I'd had the usual 38 ring of my triple to relax into.

Carlosfandango

  • Yours fragrantly.
Re: Suitable Kit was Diversity was : AUK CHAIRMAN ST
« Reply #112 on: January 15, 2019, 05:08:27 pm »
How about Absolute Black chainrings to fit a Shimano four arm crankset?

To be honest, at the moment it's specialist, short production run components that we want to fit another manufacturers products. It's gonna be pricey.
Not too pricey compared with other options.
I got AbsoluteBlack 46/30 rings & new R7000 chainset for sub£200  - and still hoping to get a bit back on the redundant 50/34 rings.
I did find the 46 ring a bit trying in yesterday's wind, but would probably have been slower overall if I'd had the usual 38 ring of my triple to relax into.

One person's £200 is cheap, another person's expensive.

That is a good option, but I never got on with the Shimano crankset, too flexible and too much chainrub for me. Also,  looks awful when the black finish rubs off. Didn't want to throw the cost of the Absolute Black chainrings at it, so got the Sugino.

Re: Suitable Kit was Diversity was : AUK CHAIRMAN ST
« Reply #113 on: January 15, 2019, 07:17:15 pm »
One person's £200 is cheap, another person's expensive.
I agree - I balked at the £300 cost of the Sugino,

Re: Suitable Kit was Diversity was : AUK CHAIRMAN ST
« Reply #114 on: January 15, 2019, 07:37:08 pm »
I've been curious about these Doval cheapo sub-compact chainrings for a while - no idea of the quality but one of these days I might take a punt and order some. They're certainly much cheaper than the Absolute Black offerings.

Cudzoziemiec

  • Solar powered, tea fuelled cycle-wol
Re: Suitable Kit was Diversity was : AUK CHAIRMAN ST
« Reply #115 on: January 15, 2019, 07:43:18 pm »
One person's £200 is cheap, another person's expensive.
I agree - I balked at the £300 cost of the Sugino,
It does look pretty, but...

I wonder how many they've ever sold?
The earth is vast and beautiful and contains many miraculous places. (Chekhov)

quixoticgeek

  • Mostly Harmless
Re: Suitable Kit was Diversity was : AUK CHAIRMAN ST
« Reply #116 on: January 23, 2019, 12:02:28 pm »
So faced with a choice between AbsoluteBlack, FSA, Sugino or Praxis, you've found problems with each one.  Well done, you've discovered how kit choice works.  Shimano will probably follow the trend in a couple of years but until then you'll have to stop being sniffy about Tiagra, triples, square taper BBs and/or mechanical shifting.

AbsoluteBlack - Oval rings, still not sure about them, but most plausible option out there
FSA - Only works with their own BB, but it's external bearing, offers two price options. Plausible
Sugino - Discontinued, available in a few places, but 300 quid a go, and not sure about replacement parts, because it's discontinued
Praxis - Unless I'm missing something, I can't find anything smaller than 32/48. That's not 30/46...

I'd like Di2 shifting so I can have shifters in multiple places, (see other threads for more discussion about this). I currently run Tiagra 2x10 (With a MTB front mech and chainset, that shimano says doesn't work).

But of all the options listed, only the AbsoluteBlack oval rings provide an easy drop in replacement for the chainrings on an off the peg bike. I've yet to get my head round the pros and cons of oval chain rings. it's also worth noting that the Absolute Black rings are not compatible with most crank based power meters, they are updating the design to be compatible with the Dura Ace Shimano Power meter, but that's the only crank based option, according to AbsoluteBlack themselves.

Quote

(While we're at it, I'd love it if manufacturers still made 8 speed brifters.  You know what though?  I realise I'm in a minority.)

I know I'm in a minority, but I also know that this minority isn't as small as some may think (look at the number of gravel bike riders who ask for sub compact chainsets.

When I finish building my Di2 bike, I'm wondering if I can somehow set it up to log which gear I'm in at any given time on a ride so I can get an idea on how much I'm using each gear...

J
--
Beer, bikes, and backpacking
http://b.42q.eu/

Kim

  • 2nd in the world
Re: Suitable Kit was Diversity was : AUK CHAIRMAN ST
« Reply #117 on: January 23, 2019, 01:11:41 pm »
When I finish building my Di2 bike, I'm wondering if I can somehow set it up to log which gear I'm in at any given time on a ride so I can get an idea on how much I'm using each gear...

You're logging speed and cadence, right?
To ride the Windcheetah, first, you must embrace the cantilever...

sib

Re: Suitable Kit was Diversity was : AUK CHAIRMAN ST
« Reply #118 on: January 23, 2019, 01:23:27 pm »
Yes Garmin units can record di2 gearing....see https://www.dcrainmaker.com/2014/12/5108101000-dynamics-segments.html

Re: Suitable Kit was Diversity was : AUK CHAIRMAN ST
« Reply #119 on: January 23, 2019, 02:16:51 pm »
When I finish building my Di2 bike, I'm wondering if I can somehow set it up to log which gear I'm in at any given time on a ride so I can get an idea on how much I'm using each gear...

You're logging speed and cadence, right?

GPS derived speed is not accurate enough, might be better with a wheel sensor (I think mine has run out of battery). Here's a plot from a recent ride (700x25c tyres). See if you can work out even a sensible guess of the gearing from it:-





"Yes please" said Squirrel "biscuits are our favourite things."

Re: Suitable Kit was Diversity was : AUK CHAIRMAN ST
« Reply #120 on: January 23, 2019, 10:39:06 pm »
@quixoticgeek, I might have missed it above but Velo Orange have a 2x10 46/30 crankset in 50.4 BCD https://velo-orange.com/collections/cranks/products/grand-cru-50-4bcd-crankset-mkii , I had this on my audax bike for a few years (Ultega Shifters & FD, Deore XT RD, 11-36 cassette), worked well although the FD wasn't perfect but ok, would have investigated options if I had kept this setup. In the end I went to 3x9 (just like my tourer) as it gave me an additional high gear and 2-3 lower gears but most importantly allowed me to just stay on the middle ring (36, cassette 12-36) much of the day if I was being lazy rather than frequently going up and down on the double.

Re: Suitable Kit was Diversity was : AUK CHAIRMAN ST
« Reply #121 on: January 25, 2019, 11:19:05 pm »
I have recently swapped to absolute black oval sub compact. Paired with a Stages PM. Works. Eautifully.

The oval rings seem to smooooth the rhythm of cycling rather than anything more obvious.
Easy swap