[ebonho]

Slightly clearer photos (minus the yellow flash which washes out more than it illuminates!) of the bulge in the sidewall and the damage to the outer rubber layer over the underlying thread laced carcass .





There is a moral here ... always clean your bike yourself. And inspect it while topping up the air before you ride. I did not SEE this, but FELT it while cleaning my wheel rims and tyres. I might have missed it otherwise and rode out on it ....

Cheers, Doc

[Fillmore]

Quite some nifty gadgets here for the cycle rider

10 Bike Gadgets

All might not be available here at present but worth a view.

[vb-saan]

Originally Posted by Fillmore

Quite some nifty gadgets here for the cycle rider

All might not be available here at present but worth a view.

Nice set of gadgets, on the expensive side though. That Heritage helmet looks pretty cool.

Talking about gadgets/accessories, I got this helmet yesterday

[ebonho]

Originally Posted by vb-san

Talking about gadgets/accessories, I got this helmet yesterday

Very smart helmet. And MIPS too.

Cheers, Doc

[vb-saan]

Originally Posted by ebonho

Very smart helmet. And MIPS too.

Cheers, Doc

Thank you. Got this from Specialized (Align ll); though the Mets is going strong, thought it will be better to have one more, especially that now I do roads on weekend rides. So got one with MIPS.

Noob question to you - How much of a difference does it make in speed, between a 9-speed Sora (11-32T) and say an 11-speed 105 (11-34T), and 50-34 chainring on both? Weight difference and smoothness in shifting is taken, but what are the other reasons that can impact speed (from a drivetrain POV)?

[ebonho]

Originally Posted by vb-san

Noob question to you - How much of a difference does it make in speed, between a 9-speed Sora (11-32T) and say an 11-speed 105 (11-34T), and 50-34 chainring on both? Weight difference and smoothness in shifting is taken, but what are the other reasons that can impact speed (from a drivetrain POV)?

Zero difference. Even if you go one lower to Claris. Assuming the same rider. All the difference is in the legs. Not the hardware.

The biggest difference between a 8 (or 9) speed and a 11 speed is not how fast you go or how steep you can climb. It's how tired you get at the end of a long ride. You need to ve a very strong rider (or one who mashes habitually) to be able to take the bigger jumps in a 8 speed. Even then depending on the gradient, wind, time in the ride, level of fatigue, you will have many moments wgere you find yourself without the correct gear, trapped in a grey zone between two gears, where you just cannot find your comfort space and cadence.

When this repeats over 100 km or more, you start feeling it and fatigue quicker than the guy riding a 11 speed with spall incremental.jumps that always put him in exactly the right gear such that his cadence never changes, nor does his degree of effort.

Cheers, Doc

[ringoism]

Originally Posted by ebonho

So I've put the word out on my mission tourer/beater drop bar gravel/bikepacking bike build rolling frame donor bike search to my friend circle

Not sure where you're at with this, Doc, but brought this home last evening:



Most here may understandably ask "Why!??!", and it's mainly because it has a taller frame (23") than anything else I own, by a couple inches. And because I like to pile up scrapyard projects before a long winter...

26" wheels originally but expect it should accept 700's or at least 27.5's. Steel being easily weldable, I might just get some disc brake mounts on it to keep any wheel-size experiments simpler and to maximize the, eh, "modern appeal"...

Looks a little compact in the photo, but top tube length is also 23", which is similar to my very spacious/comfy Raleigh Conan 29er.

Got it from the same guy I bought the ACT108Max from - he's had what's left of two of these Hero Ranger "ATB"'s sitting for ages, left over from ten he originally owned/ sold. Seems to think they were great bikes, and whatever, I figured it was probably worth ₹600 (incl. the orig. straight steel handle) just to fool around with.

Vs. a modern aluminum mtb frame, even, it's definitely heavy - albeit not "heavy" like that millstone under it ("only" 4.5kg for frame incl. fork).

Its brother still had half a crankset, BB, stem, handle & seat, all in steel, and showed somewhere around 8kg, so building up more or less as I did the Riverside (which similarly weighed 5kg bare), I'd target in the region of 13.5-14kg finished, but with a more spacious frame probably better suited to my physique than that one is...

Very neat butted welds here. Note the original Hero-logo'd center-pull cantilevers - I never knew any Indian bike had come with those...

Now if I can just get that rusted seat-post out...
(Winter project indeed)

-Eric

[ebonho]

Originally Posted by ringoism

Not sure where you're at with this, Doc, but brought this home last evening:

-Eric

Finally a proper 90s steel MTB frame! Spindatt will be proud.

My Hercules Top Gear has center pull cantilevers too.

[vb-saan]

Originally Posted by ebonho

Zero difference. Even if you go one lower to Claris. Assuming the same rider. All the difference is in the legs. Not the hardware.

The biggest difference between a 8 (or 9) speed and a 11 speed is not how fast you go or how steep you can climb. It's how tired you get at the end of a long ride. You need to be a very strong rider (or one who mashes habitually) to be able to take the bigger jumps in a 8 speed. Even then depending on the gradient, wind, time in the ride, level of fatigue, you will have many moments where you find yourself without the correct gear, trapped in a grey zone between two gears, where you just cannot find your comfort space and cadence.

When this repeats over 100 km or more, you start feeling it and fatigue quicker than the guy riding a 11 speed with spall incremental jumps that always put him in exactly the right gear such that his cadence never changes, nor does his degree of effort.

Thank you for the detailed explanation. And the spacing between higher gears seems pretty similar between 9/10/11 speeds. So effectively its about preserving energy and developing on the ability to push.

[ebonho]

Originally Posted by vb-san

Thank you for the detailed explanation. And the spacing between higher gears seems pretty similar between 9/10/11 speeds. So effectively its about preserving energy and developing on the ability to push.

In general, the jumps between the higher gears (smaller cogs) is lower than those between the lower gears (bigger cogs). But the effect (feel) on your legs of a 1 or 2 tooth jump at the higher end is the same (slightly more in the lower speed systems like 8 speed in fact) as to 3 to 4 to even 5-6 tooth jump at the lower end. The job of gears is primarily to get you over terrain, but co-primarily (not secondarily) to allow you to tap out a steady cadence at a steady hear rate while doing so.

Do remember (and I commented on this recently on You Tube when some armchair gear snobs were dissing Claris on a DurianRider video) that just 20-30 years ago, pro riders were racing in the Alps on the world pro tour with 2 and 6 speed threaded freewheels and 52-42 race cranks. I know for a fact that they chuckle with derision at what they consider saucer (dinner plate?) sized 11-32 cassettes (they spent their racing and climbing lives never going lower than 23 or max 25) and positively baulk at what they consider very cissy/granny 52-36 or (shudder/cringe) 50-34 modern semi compact and compact cranksets.

Cheers, Doc

[Fillmore]

Originally Posted by ebonho

Zero difference Even if you go one lower to Claris. Assuming the same rider. All the difference is in the legs. Not the hardware.

The biggest difference between a 8 (or 9) speed and a 11 speed is not how fast you go or how steep you can climb. It's how tired you get at the end of a long ride.

While the rest of your explanation is spot on, why do you say Zero difference ?

If it was Zero difference why would bike/component manufacturers bother to come up with so many different cog sizes ?

It does make a difference, take a 11x36 Cassette vs a 11x28 Cassette, climbing on the 11x36 for steep climbs definitely would be much easier than taking the same incline on a 11x28. Premium MTB's now come with 11x51 Cassettes , I bet you will not be able to make the same climb with a 11x32 given the same level of effort put in.

In the intermediate range no doubt there will be a lot of overlapping gear combos when it comes to a 3x8 or 3x10 front/rear gear set. That's one reason I was looking out for a 2x10 set maybe where you have a High teeth count for the climbs at the rear Cassette , at the same time you have a decent 11 for flat roads. Might not go as fast as a road bike , but heck if you can go at 25kmph is good enough for most folks.

[ebonho]

Originally Posted by Fillmore

While the rest of your explanation is spot on, why do you say Zero difference ?

If it was Zero difference why would bike/component manufacturers bother to come up with so many different cog sizes ?

It does make a difference, take a 11x36 Cassette vs a 11x28 Cassette, climbing on the 11x36 for steep climbs definitely would be much easier than taking the same incline on a 11x28. Premium MTB's now come with 11x51 Cassettes , I bet you will not be able to make the same climb with a 11x32 given the same level of effort put in.

In the intermediate range no doubt there will be a lot of overlapping gear combos when it comes to a 3x8 or 3x10 front/rear gear set. That's one reason I was looking out for a 2x10 set maybe where you have a High teeth count for the climbs at the rear Cassette , at the same time you have a decent 11 for flat roads. Might not go as fast as a road bike , but heck if you can go at 25kmph is good enough for most folks.

But we are not comparing apples to bananas in terms of different gear ranges or a "road" close ratio cassette (11-25) versus a wide ratio cassette (11-32 or 11-34) or "MTB/Gravel 1x" cassette (11-36 to 11-50).

We are comparing identical gear range (eg. 11-32) between a 8-9 speed versus a 11 speed. For a road group-set hierarchy like Shimano or SRAM.

8, 9, 10, and 11 speed cassettes, all have 11-25, 11-28, and 11-32 options. So theoretically your top end and steepest climbing gear in all are the same.

Its the effort in between that differs.

More gears in between simply means smaller jumps and more available ratios to select from for the same level of resistance (gradient, wind, etc.)

For instance, I have two 8 speed cassettes:

11-12-14-16-18-21-26-32

12-14-16-18-21-24-28-32

The second cassette foregoes the highest 11t cog, with 12 being the highest, and puts that extra cog as an additional ratio in the climbing range of the cassette, on either side of the 26 (by now having two ratios instead of the far spaced single ratio, of a 24 and a 28, where the first cassette has just a 26 with a 5t jump from 21 and an even bigger 6t jump to 32).

This is a very nice article by Gordon Brown ...

https://www.sheldonbrown.com/speeds.html

Cheers, Doc

P.S. Why manufacturers do ANYTHING is eventually linked to money and profit. That is the nature of any business. This is how Gordon Brown starts -

"Bicycle Gears: 6-speed, 7-speed, 8-speed, 9-, 10-, 11-, ...?

Component manufacturers like to sell you lots of new parts, even if you don't need them. This has led to much confusion as various parts are labeled as if they are incompatible with other parts even though they are actually usable with little or no problem. Also, design often is churned by spec hype, and "keeping up with the Joneses," as in more sprockets, lighter weight, higher-priced components must be better. "Jones" is also a slang term for a drug addiction!

In reality, the fancier parts aren't always the most suitable, in the same way that a Ferrari, while it is a great racecar, isn't at all as good for daily transportation as a Toyota -- there are practical issues of cost, reliability, serviceability and durability. With bicycle components, the performance gain with higher-end models is often minuscule. Remember, you account for 80 percent of the weight even if you are riding a rather heavy bicycle!"

[vb-saan]

Originally Posted by ebonho

We are comparing identical gear range (eg. 11-32) between a 8-9 speed versus a 11 speed. For a road group-set hierarchy like Shimano or SRAM.

8, 9, 10, and 11 speed cassettes, all have 11-25, 11-28, and 11-32 options. So theoretically your top end and steepest climbing gear in all are the same.

Its the effort in between that differs.

More gears in between simply means smaller jumps and more available ratios to select from for the same level of resistance (gradient, wind, etc.)

True, the variance indeed is evident in the middle jumps.

The 11-34 9-speed cassette on my bike goes like this – 11-13-15-17-20-23-26-30-34
And an 11-speed 105 with the same range has 11-13-15-17-19-21-23-25-27-30-34

[ebonho]

Originally Posted by vb-san

True, the variance indeed is evident in the middle jumps.

The 11-34 9-speed cassette on my bike goes like this – 11-13-15-17-20-23-26-30-34
And an 11-speed 105 with the same range has 11-13-15-17-19-21-23-25-27-30-34

This is why -

"In general, the jumps between the higher gears (smaller cogs) is lower than those between the lower gears (bigger cogs). But the effect (feel) on your legs of a 1 or 2 tooth jump at the higher end is the same (slightly more in the lower speed systems like 8 speed in fact) as to 3 to 4 to even 5-6 tooth jump at the lower end."

Its simple maths actually and there is also a "ideal jump ratio" range between consecutive gears. I forget the number. @Shipnil had mentioned it a long time back when we were having a gear ratio discussion.

Cheers, Doc

[anoopGTkrish]

HI All - Recently discovered this section of the forum and needless to say that I am really thrilled to have a community of cycling enthusiasts here.

A bit about my journey with cycling. I started getting back into cycling at the beginning of 2021, after leaving it at the age of 21. For me I was on the lookout for new forms of exercise besides boxing and crossfit and rediscovered my liking for cycling. Now I try to complete 100 Kms a week alongside other forms of exercise and I feel I'm ready to explore further and do longer endurance rides.

I currently have a Triban RC 100 that I picked up from decathlon and I really like the bike. But it is limited by its 7 speed Tourney unit which is felt especially on climbs and long distance sprinting. Since my primary target is fitness, I do try to keep a watch on the average speed and enjoy sprinting and the occasional suffering. I have come to realize that its time for me to switch to an endurance geometry road bike to better suit my needs. Considering the lack of availability in the market, I took a look at the used bike market and found out 2 decent options. Both these are unfortunately not very popular and have limited reviews online. Requesting suggestions and inputs from fellow enthusiasts here.

Option 1 - Focus Culebro 4.0 2018 -

This is a 2018 model with a fair amount of usage (~2500KM as per the current owner). Comes with

• Sora GroupSet
• Concept EX Wheelset
• KMC Chain
• FSA Headset
• Concept EX Brakes

Online reviews are scarce and the ones which are there points towards this being a no-nonsense fast entry level road bike.

Selling Price - 55000 INR

Most detailed review I could find - https://www.bikeradar.com/reviews/bi...ro-4-0-review/

Option 2 - Ridley Damocles 3

This is a 2020 purchase model of the India specific Damocles 3. Has an endurance oriented frame and comes with -

• Tiagra GroupSet
• Shimano Wheelset
• Shimano Chain
• FSA Crankset
• Tektro brakes

Selling price - 59000 INR

Most detailed review - https://www.choosemybicycle.com/en/w...-3-2017-review

This one while seems good on paper, is in another city and I will have to depend on pictures and videos for inspection before its shipped over.

Looking forward to your suggestions on the above 2 or any leads on new/ used bikes will also be appreciated. I am currently located in Bangalore.