The Retirement Thread

[ColinJ]

I've 229 at present.

You must like going downhill at 150 km/hr or have a very low cadence! 20 rpm would give you around 48 km/hr (30 miles/hr).

 

[classic33]

You must like going downhill at 150 km/hr or have a very low cadence! 20 rpm would give you around 48 km/hr (30 miles/hr).

Low cadence.
Chainring is 62
Wheels are 27"
Smallest on the rear is 11

Then, I've a 50% increase from a SA five speed hub.

 

[ColinJ]

Low cadence.
Chainring is 62
Wheels are 27"
Smallest on the rear is 11

Then, I've a 50% increase from a SA five speed hub.

Hmm! I prefer 80-100 rpm with ~90 rpm being my favourite cadence.

 

[classic33]

Hmm! I prefer 80-100 rpm with ~90 rpm being my favourite cadence.

What speed would that get you on the above set up then?

I tried for as high a gear as possible.

 

[12boy]

Per Sheldons calculator it's 166.9 gear inches. Good for them 20% grades, what.

 

[classic33]

Per Sheldons calculator it's 166.9 gear inches. Good for them 20% grades, what.

You including the 50% increase from the hub gearing.

 

[12boy]

Just run his calculator. I like it because it has a lot of IGH and wheelsize options. I set it up for 11 tooth sprocket and 62 tooth chainring.

 

[ColinJ]

Just run his calculator. I like it because it has a lot of IGH and wheelsize options. I set it up for 11 tooth sprocket and 62 tooth chainring.

You've made a mistake somewhere... I used the same calculator!

Then apply the 325% to that...

What speed would that get you on the above set up then?

90 rpm in gear 8 would give nearly 214 km/hr (133 miles/hr).

 

[classic33]

You've made a mistake somewhere... I used the same calculator!

View attachment 554758

Then apply the 325% to that...


90 rpm in gear 8 would give nearly 214 km/hr (133 miles/hr).

All you'd need is a traffic free Burnley Road. And any and all lights in your favour.

Might give SJS a call later today.

 

[numbnuts]

 

[PaulSB]

feeling remarkably good for this time in the morning. I shall finish my brew and hopefully doze...........helped by counting gear inches!!!

I know what these are but those posts have lost me completely.

@Dave7 - have you ordered an ebike yet?

 

[Mo1959]

Morning. I don't have a mathematics brain so it confuses me entirely. Struggled to squeeze a pass at O-level

It is chilly but dry so might have an early bimble and get it done.

 

[Tenkaykev]

I've been up and lurking for a couple of hours. The rain is lashing down at the moment so I'll wait for it to abate before heading out the door. Managed 8.8 Km yesterday on a random bimble. Now I need to sort out what apps to transfer to the new phone, and get familiar with the controls.
We're due a visit from our daughter and grand daughter this afternoon, that should wear me out more than the DIY I did yesterday.
Have a lovely day folks.

 

[screenman]

Morning all.

 

[Drago]

I have risen!

Had a torrid night. Woke up at about 0100hrs with a rotten heache and could get properly off again.