Geekzone Cycling Thread

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Mad Scientist
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#3334641 23-Jan-2025 09:19

networkn:
99 Cycles told me if I want a Bike with a smooth gear change, the minimum to spend is $1200 and more like $1500. Sigh.

Going to go in store and see what I can find.

The last torpedo7 i linked has smooth gear change

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#3334650 23-Jan-2025 09:37

mudguard:

It lives above her motorbike when she's not riding it.

Wow, so they do exist in NZ. How much is that? (compared to my $675 with plush air fork, smooth gears, low friction drive train, etc etc)

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#3334653 23-Jan-2025 09:41

Batman:
mudguard:

It lives above her motorbike when she's not riding it.

Wow, so they do exist in NZ. How much is that? (compared to my $675 with plush air fork, smooth gears, low friction drive train, etc etc)

Looks like that specific model with smooth-shifting Microshift Advent drivetrain is currently available for $699 around the country.

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#3334657 23-Jan-2025 09:57

Handsomedan:
Looks like that specific model with smooth-shifting Microshift Advent drivetrain is currently available for $699 around the country.

Looks good. But I don't think it has the climbing gears I need. My mtb will climb the steep hills of Dunedin no issues but this one won't. All the best to networkn.

networkn

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#3334661 23-Jan-2025 10:04

Batman:

Looks good. But I don't think it has the climbing gears I need. My mtb will climb the steep hills of Dunedin no issues but this one won't. All the best to xpd.

What are climbing gears? It's not a term I've heard before? What size hills require those?

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#3334667 23-Jan-2025 10:25

networkn:
Batman:

Looks good. But I don't think it has the climbing gears I need. My mtb will climb the steep hills of Dunedin no issues but this one won't. All the best to xpd.

What are climbing gears? It's not a term I've heard before? What size hills require those?

If you live in Wellington or Dunedin you'll need them. If you live in chch or Hamilton you probably won't.

In akl, depending on where you live.

How steep depends on the strength of the rider. Is your daughter very athletic or is she not. I don't want to judge by age but by size I'd say she likely won't make it up any hills with the hybrid.

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#3334668 23-Jan-2025 10:29

Batman:
Handsomedan:
Looks like that specific model with smooth-shifting Microshift Advent drivetrain is currently available for $699 around the country.

Looks good. But I don't think it has the climbing gears I need. My mtb will climb the steep hills of Dunedin no issues but this one won't. All the best to networkn.

To be fair I was riding up Signal Hill on an 18kg bike with a 36t front chain ring and 12-36t cassette so it can be done. Would I do it again. No. But did it multiple times per week.

Commuters and road bikes don't gearing as low as a rule you can maintain a higher speed as the rolling resistance is much lower.

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#3334670 23-Jan-2025 10:31

networkn:
What are climbing gears? It's not a term I've heard before? What size hills require those?

Because there's no such thing. They are all just gears, and effective gearing. Gearing depends on wheel(tyre to be exact) size, front chainring, rear cassette.

mudguard

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#3334671 23-Jan-2025 10:32

networkn:
@mudguard that bike sounds like exactly what we need.

We will head to MEC in Mt Eden on Saturday to take a look.

Funnily enough, that's where my partner's came from too.

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#3334672 23-Jan-2025 10:33

mudguard: />To be fair I was riding up Signal Hill on an 18kg bike with a 36t front chain ring and 12-36t cassette so it can be done. Would I do it again. No. But did it multiple times per week.

Commuters and road bikes don't gearing as low as a rule you can maintain a higher speed as the rolling resistance is much lower.

Just beat in mind op has a daughter that is 155cm tall. Either she's a freak athlete in which case yeah she'll be fine. But most 155cm girls that I've seen getting their first bike won't cope with hills without decent gearing. They just don't have the leg power. Boys I've seen doing fine but those were 165cm tall boys too, not sure about 155cm boys.

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#3334673 23-Jan-2025 10:36

mudguard: >Commuters and road bikes don't gearing as low as a rule you can maintain a higher speed as the rolling resistance is much lower.

The friction may be lower, But the gravitational potential energy to overcome is the same when it comes to hills.

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#3334674 23-Jan-2025 10:38

networkn: What size hills require those?

Mount eden... Is it steep? See if they'll let her pedal on the steepest section of her school route. Had to say. I don't know how strong she is.

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#3334677 23-Jan-2025 10:42

Batman: If you live in Wellington or Dunedin you'll need them. If you live in chch or Hamilton you probably won't. akl, depending on where you live.How steep depends on the strength of the rider. Is your daughter very athletic or is she not. I don't want to judge by age but by size I'd say she likely won't make it up any hills with the hybrid.

The thing is the Sirrus is really a road bike with a flat bar.
It's got a 40t on the front, 12-42t on the back. So she should be fine in Auckland.
I've ridden up Highgate in worse.
I looked at the crankset that closely but potentially the front chain ring could be replaced with a smaller one if required.

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#3334690 23-Jan-2025 11:20

mudguard:/>I've ridden up Highgate in worse.
I looked at the crankset that closely but potentially the front chain ring could be replaced with a smaller one if required.

But you're not a small girl where the bike probably weighs more than some of them. For a small girl I'd go 32t chainring to be safe. swap back the 40t (& new chain) when they have completed puberty. But they might need a bigger bike too.

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#3334700 23-Jan-2025 12:01

Batman:
mudguard:/>I've ridden up Highgate in worse.
I looked at the crankset that closely but potentially the front chain ring could be replaced with a smaller one if required.

But you're not a small girl where the bike probably weighs more than some of them. For a small girl I'd go 32t chainring to be safe. swap back the 40t (& new chain) when they have completed puberty. But they might need a bigger bike too.

But I was a small boy once in Dunedin!

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