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Technical & Reference Section => Tech and Restoration => Topic started by: 2020mad on January 13, 2006, 10:42 PM

Title: freewhell info wanted
Post by: 2020mad on January 13, 2006, 10:42 PM

What is the smallest size freewheel you can get for a normal rear wheel without having a casette hub ? cheers.

Title: Re: freewhell info wanted
Post by: billstup on January 13, 2006, 10:46 PM

13 t I think  :daumenhoch:

Title: Re: freewhell info wanted
Post by: TwoBobRob on January 13, 2006, 10:58 PM

But that 13 tooth freewheel will not go on a good old fashioned hub...  I made that mistake   :'(


I stand to be corrected, but I think a traditional flip flop hub has the smaller threaded area on one side of it which will accomodate the wee freewheels.

I think   :-\

Title: Re: freewhell info wanted
Post by: 2020mad on January 13, 2006, 11:02 PM

Its just your old standard screw on type hubs ive got.   what about a 14T ? or am i stuck with 16T?

Title: Re: freewhell info wanted
Post by: billstup on January 13, 2006, 11:07 PM

You are right Rob, a normal freewheel only goes down to 16 t, but I thought 2020mad ment what is the smallest freewheel that goes on a hub that is not a casette hub, i.e a threaded one  :idiot2:

Perhaps we need more info  :daumenhoch:

Title: Re: freewhell info wanted
Post by: TwoBobRob on January 13, 2006, 11:09 PM

You're stuck with yer 16 I'm afraid.  I thought I could run a 15t on my Superpro hub - Nope!   :tickedoff:

Title: Re: freewhell info wanted
Post by: 2020mad on January 14, 2006, 12:02 AM

Hmmm guess i won't be fitting 28T chainring tommorow then,  28-16 ratio a bit stupid.
Will have to start saving a bit more for some new wheels.

Title: Re: freewhell info wanted
Post by: Nana on January 14, 2006, 12:06 AM

You need a 10 to run a 28 teeth sprocket but it various but nowt by much you can run a 10x28 ,29,30,31 most common on new rides are 13x36

Title: Re: freewhell info wanted
Post by: Rombloke on January 14, 2006, 10:45 AM

ok the easiest way to work out gearing is to head for an average ratio of 2.75.
this is acheived by diving the front sproket size by the rear

i.e 44 / 16 = 2.75


so if you wanted to run a 28 tooth front, then that needs to be divided by the 2.75 which equals 10.18.....so as nana says you will need a ten tooth driver.

44/16
42/15
40/14
39/14
36/13
33/12
30/11
28/10
25/9
22/8

hope that helps....i feel nerdy now

Dave

Title: Re: freewhell info wanted
Post by: power on January 14, 2006, 11:00 AM

the smallest freewheel you can use on normal size threaded hub is 15 http://www.alansbmx.com/product_info.php?products_id=1179
you will need a flip flop hub to go smaller than that

Title: Re: freewhell info wanted
Post by: 2020mad on January 14, 2006, 11:04 AM

Thanks :daumenhoch:

Title: Re: freewhell info wanted
Post by: TwoBobRob on January 14, 2006, 08:40 PM

Quote from: power on January 14, 2006, 11:00 AM

the smallest freewheel you can use on normal size threaded hub is 15 http://www.alansbmx.com/product_info.php?products_id=1179
you will need a flip flop hub to go smaller than that

Aah.....  Specialist item.  Nice.  £20?  even nicer.  Wish i'd seen that.... :'(