RADBMX.CO.UK

BMX General => BMX Chat => Topic started by: dubber on October 03, 2011, 03:08 PM

Title: chainring-freewheel combo, whats best?
Post by: dubber on October 03, 2011, 03:08 PM: just bought a 25t sprocket for my haro, what can that be matched with apart from a 9 freewheel?...bought the haro freewheel yesterday was gonna ask first on here but obviously site was down. :(..got a bit impatient..lol..
whats the combos you can have for various sizes..
i know 25-9
42-16
etc but i wanted to go a bit more new school..
to go on this ride.
(http://www.radbmx.co.uk/archive/albums/aa97/DUBBER657/04haro.jpg)
thanks for your time..
Title: Re: chainring-freewheel combo, whats best?
Post by: Jon The Bassist on October 03, 2011, 03:18 PM: You could go 25:10 but that's gonna feel really low, like a 40:16.
Title: Re: chainring-freewheel combo, whats best?
Post by: Spen69 on October 03, 2011, 03:24 PM: The smallest freewheel, ie sprocket that you thread onto the outside of a hub that you can buy is a 13T Oddysey, and it will run on a flip-flop hub small side (30mm dia) which means you can get down to 36T front for normal riding, possibly a 34T to 33T if you're riding parks a lot and need acceleration not top speed.

To run a 25T front chainwheel you need a rear wheel built with a cassette hub specifically designed for the task, ie to run a 9T cog. I doubt that you bike has this, but take a close up of the rear hub and I'll let you know.

If you need to buy a hub and re-lace it into your rim, you'd best sit down as it won't be cheap :shocked:

Spen :daumenhoch:
Title: Re: chainring-freewheel combo, whats best?
Post by: QUADROPHENIA on October 03, 2011, 04:06 PM: Thinking of going 28-9, tried a mates, was very nice
Title: Re: chainring-freewheel combo, whats best?
Post by: mattuknc on October 03, 2011, 04:19 PM: I run 28/9 on my Subrosa for the ride to work, it works nice. :daumenhoch:
Going from 45/16 to 46/16 on the Goose. ;D
Title: Re: chainring-freewheel combo, whats best?
Post by: oldtired on October 03, 2011, 04:38 PM: just gone 45/16 on the mcs :daumenhoch: run 41/16 on the current park incarnation , as Spen says, easier will give faster acceleration over shorter distance , but not much good for a long run or a blast round the track

that seat looks real comfy :daumenhoch: :LolLolLolLol:
Title: Re: chainring-freewheel combo, whats best?
Post by: fugazi on October 03, 2011, 06:49 PM: Quote from: QUADROPHENIA on October 03, 2011, 04:06 PM

Thinking of going 28-9, tried a mates, was very nice

Agreed, so is 30-10 :daumenhoch:
Title: Re: chainring-freewheel combo, whats best?
Post by: dubber on October 03, 2011, 07:51 PM: Quote from: Spen69 on October 03, 2011, 03:24 PM
The smallest freewheel, ie sprocket that you thread onto the outside of a hub that you can buy is a 13T Oddysey, and it will run on a flip-flop hub small side (30mm dia) which means you can get down to 36T front for normal riding, possibly a 34T to 33T if you're riding parks a lot and need acceleration not top speed.

To run a 25T front chainwheel you need a rear wheel built with a cassette hub specifically designed for the task, ie to run a 9T cog. I doubt that you bike has this, but take a close up of the rear hub and I'll let you know.

If you need to buy a hub and re-lace it into your rim, you'd best sit down as it won't be cheap :shocked:

Spen :daumenhoch:
just taken this pic, if its not good enough ill do a better one tomorow...cheers Spen.. :daumenhoch:
(http://www.radbmx.co.uk/archive/albums/aa97/DUBBER657/hub.jpg)
Title: Re: chainring-freewheel combo, whats best?
Post by: QUADROPHENIA on October 03, 2011, 08:10 PM: swap the back wheel out and get a cassette, but make sure the chainring dont hit the frame, i didnt when i brought a proper :-[ it cost me a new wheel and chainring
Title: Re: chainring-freewheel combo, whats best?
Post by: Betty on October 03, 2011, 08:23 PM: Is that a 16t freewheel?

The hub doesn't look threaded on the other side, if not 16t is as low as you can go

Just stick with 44/16, that's the easiest option... :daumenhoch: