Author Topic: Mini build questions (Read 1640 times)

Frosty · « **on:** March 08, 2006, 12:26 PM »

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

kdw712 · « **Reply #1 on:** March 08, 2006, 03:42 PM »

i am building a bike for my daughter
and initially gonna use 41t up front with 16t rear
and 155mm cranks

Nosnod · « **Reply #2 on:** March 08, 2006, 05:06 PM »

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.

silentpartner · « **Reply #3 on:** March 08, 2006, 10:38 PM »

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

Frosty · « **Reply #4 on:** March 09, 2006, 10:49 AM »

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

jon016847 · « **Reply #5 on:** March 09, 2006, 12:08 PM »

I use mini road calipers / mini diacomp bmx caliprs on ym minin builds, winemann also do small calipers,

Steve P · « **Reply #6 on:** March 09, 2006, 12:44 PM »

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

Cheers

Steve

Frosty · « **Reply #7 on:** March 09, 2006, 12:46 PM »

I have those cranks all ready to go. The mini brakes do look better on these also, Minihaha, what make brakes are yours?

Steve P · « **Reply #8 on:** March 09, 2006, 12:56 PM »

Quote from: Frosty on March 09, 2006, 12:46 PM

Minihaha, what make brakes are yours?

The caliper is a mini Tektro unit with a DC Tech 3 lever

Cheers

Steve

kdw712 · « **Reply #9 on:** March 09, 2006, 01:10 PM »

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

daz bmx it! · « **Reply #10 on:** March 10, 2006, 09:50 AM »

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

Steve P · « **Reply #11 on:** March 10, 2006, 12:09 PM »

Quote from: daz bmx it! on March 10, 2006, 09:50 AM

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

Never tried that . . . is there enough room to get a one-piece crank through a euro BB ??

Cheers

Steve

silentpartner · « **Reply #12 on:** March 10, 2006, 05:45 PM »

Quote from: daz bmx it! on March 10, 2006, 09:50 AM

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

you cant, i belive i'm right in saying that one piece cranks only fit US bottom brackets

alan

steve · « **Reply #13 on:** March 10, 2006, 07:34 PM »

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

daz bmx it! · « **Reply #14 on:** March 10, 2006, 11:51 PM »

okey dokey,thx

, in that case where can i get a 3 piece crank complete? to suit new or used?

Steve P · « **Reply #15 on:** March 10, 2006, 11:57 PM »

Quote from: daz bmx it! on March 10, 2006, 11:51 PM

okey dokey,thx , in that case where can i get a 3 piece crank complete? to suit new or used?

!!! CLICKETY CLICK !!!

Hope this helps

Steve

daz bmx it! · « **Reply #16 on:** March 11, 2006, 12:39 PM »

thx,need a little cheaper tho?

kdw712 · « **Reply #17 on:** March 14, 2006, 02:05 PM »

Quote from: steve on March 10, 2006, 07:34 PM

-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 ....

kdw712 · « **Reply #18 on:** March 14, 2006, 02:07 PM »

daz

look at 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

daz bmx it! · « **Reply #19 on:** March 16, 2006, 12:08 AM »

steve · « **Reply #20 on:** March 29, 2006, 03:18 PM »

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

kdw712 · « **Reply #21 on:** March 29, 2006, 04:03 PM »

Quote from: steve on March 29, 2006, 03:18 PM

-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