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Technical & Reference Section => Tech and Restoration => Topic started by: Frosty on March 08, 2006, 12:26 PM
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Having never built a little uns bike before I'll seek some guidance on a couple of things from you folks
I have some flip flop hubs and need and idea of the gearing that I should run for the bike, ie each side and also the chainring size?
With regards to the rear brake, will I need a road race caliper or will a DC 890 suffice?
That's all, these are the last parts I need to get before building starts.
Thanks
Paul
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i am building a bike for my daughter
and initially gonna use 41t up front with 16t rear
and 155mm cranks
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I built a mini for my lad and used 40 - 16 gearing with 152mm length cranks
With regard to the brake just fit the wheel where you want it and then measure the brake reach to see if you need a special mini road caliper. in most cases you should be OK, I used a DC 890 with no probs.
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my nine year old runs 36/15 alot of the time as this gives him better accelleration out the gate, and quicker pick up, but sometimes he loose's out on top end on really long tracks. brake wise its what fits best. on my old school mini i'm using weinmann 730, but 890's are excellent.
alan ;)
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Thankyou all, I'll have to wait until I have built her up before spec'ing the brakes, but gearings wise, I'll use your infor and do some calcs.
Regards
paul
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I use mini road calipers / mini diacomp bmx caliprs on ym minin builds, winemann also do small calipers,
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I used the 40 - 16 ratio with 152mm cranks on my Mini Ripper
Used a mini short reach rear brake too which was perfect for the skinny Ukais
(http://www.radbmx.co.uk/archive/albums/a217/steve167690/SE%20Mini%20Ripper/DSCF2490.jpg)
Cheers
Steve :daumenhoch:
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I have those cranks all ready to go. The mini brakes do look better on these also, Minihaha, what make brakes are yours?
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Minihaha, what make brakes are yours?
The caliper is a mini Tektro unit with a DC Tech 3 lever
(http://www.radbmx.co.uk/archive/albums/a217/steve167690/SE%20Mini%20Ripper/rearbrake.jpg)
Cheers
Steve :daumenhoch:
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side lining the thread a tad
any one got any cranks for a rider
cheaper than the £35 dotek's alans has for sale ?
want some for my daughter bike and need to keep costs down if poss
150mm - 160mm considered i guess
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Mini Question an all please?......where can i get a euro bb to fit a one piece crank for my Curtis mini? cheap as poss please :daumenhoch:
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Mini Question an all please?......where can i get a euro bb to fit a one piece crank for my Curtis mini? cheap as poss please :daumenhoch:
Never tried that . . . is there enough room to get a one-piece crank through a euro BB ??
Cheers
Steve :daumenhoch:
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Mini Question an all please?......where can i get a euro bb to fit a one piece crank for my Curtis mini? cheap as poss please :daumenhoch:
you cant, i belive i'm right in saying that one piece cranks only fit US bottom brackets
alan ;)
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if you have a flip flop hub, it means that you can fit a smaller than 16 tooth , to the smaller threaded side
-ie the large side can only take 16 or more
i have 2 mini brake alipers, one silver one black
-here is a link for fmf cranks at £25
We've got FMF isis in stock at £25.00 with £3.50 postage.
www.grooveracingshop.co.uk
sutty
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okey dokey,thx :daumenhoch:, in that case where can i get a 3 piece crank complete? to suit new or used? :daumenhoch:
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okey dokey,thx :daumenhoch:, in that case where can i get a 3 piece crank complete? to suit new or used? :daumenhoch:
!!! CLICKETY CLICK !!! (http://www.alansbmx.com/product_info.php?cPath=116_121&products_id=1181)
Hope this helps
Steve :daumenhoch:
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thx,need a little cheaper tho? :daumenhoch:
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-here is a link for fmf cranks at £25
We've got FMF isis in stock at £25.00 with £3.50 postage.
Sutty - looking at those FMF cranks can you confirm if they are splined cos they look square tapered in the pics ???
i have a shimano UN73 BB already so sq would be better .... ;D
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daz
look at http://www.alansbmx.com/product_info.php?products_id=1146 (http://www.alansbmx.com/product_info.php?products_id=1146)
or if grooveracing does has the square taper these FMF ones
http://www.grooveracingshop.co.uk/shop/index.php?act=viewProd&productId=136 (http://www.grooveracingshop.co.uk/shop/index.php?act=viewProd&productId=136)
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:daumenhoch:
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fmf, do make both isis and square taper
-i am not sutty, but they do them
-i had an isis bb in a bike i bought with no cranks, but i just fitted the squarebb from another bike complete with cranks to it
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-i am not sutty
oops sorry :)
i have since spoken to the shop and they were expecting both types in
but only recieved isis so they are waiting to see if the rest turn up - so fingers crossed
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i have an isis cartridge mini bb
for sale
£15
-ooh and its an fmf one, which is nice
:D
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got some 152 sugino maxys today off the bay
for a massive £11 inc P&P
so i'm sorted :daumenhoch: