3 peice help

[oldschoolrb]

could do with a bit of help here people !!
i got myself a felt 24 with a 3 peice crank ,never really used them befor allways had opc . the guy i got it off said i just need a couple of bolt to sort it out but can i fook find the ones im after ! but its not the best trying to ask for something when you dont really know what your talking about is it ...
im now barred from one shop over the fact the bolt i was holding in my hand " IS NOT OUT OF A 3 PEICE CRANK I MUST HAVE MADE A MISTAKE " i very nearly dragged the man from behind the counter 4 miles home by his ankle to show him the hole it came out of !!
thank god i took a vow of peace 12 month ago and and went to my happy place ... wooosaaaa


this is what it looks like , mines on the left,





how it looks on , i know its bash but im going get it powdered



this is what iv bin given 3 time and told is the right thing im after ,, it tightens down to fit dont you know ! everyone knows that god...



well im no rocket scientist ill have all you know , but one thing i do know is its not going to close round that now is it .....................

so please can someone help me out here

cheers ric

[BrianP]

Hey Ric,

Pretty sure those are Demolition cranks designed by Nate Wessel.
Try googling this and see if anything else comes up, might even be able to get spares from the likes of Custom Riders / Alans?

Anyway, all this bolt is doing is helping stop the crank arm from sliding off the spindle so you may be able to make something up using a large diameter washer which will have a small enough central hole to suit the spindle bolt, but a big enough outside diameter to sit on the shoulder of the crank arm itself and "keep" the arm on?

Hope this makes sense, and answers the question  I might have totally misread this - I should be working right now

Brian 

[monkian]

Yep deffo a Demolition Crank (just like this one I had)
Your bolts look different to mine. Maybe a different year or rethreaded?

[oldschoolrb]

do you know what they'r called i cant find any info on them ?

[HEYWOOD BMX]

  Are they an early Demolition Medial crank? Custom Riders will prob be able to help..

[gavprimo]

as suggested give Custom riders a ring, they know pretty much everything. 

I had a set of Madera(Profile's ahem 'budget' brand) cranks once that had the wrong bolts, and I bought the profile flush bolt set from CR and all was good after talking to them.  they do have demolition flush bolts, however I don't think yours will take them as you have pinch bolts

[oldschoolrb]

iv looked and there doesn't seem to be what im after . ill send him a pic see how i get on

[oldschoolrb]

spoke to Custom Riders and they can help me !! what can i do now 

[BrianP]

What is the outside diameter of the spindle bolt threaded part Ric?
And the outside diameter of the washer on it?

Brian 

[oldschoolrb]

spindle thead is 15 mm
outside diameter of the washer is 25 mm
overall lenght is 29 mm

[BrianP]

Have you tried that well known (mainly mountain bikes) bike shop in Ballyclare, Co. Antrim?
They do some different M15 bolts, do a quick search for "crank spares"...

If you're really stuck though, an M12 standard DIN125 flat steel washer has an OD of 24mm, and an M8 DIN9021 penny washer has an OD of 24mm, if you fancied drilling out the centre to suit the M15 bolts you already have?

You can usually get these from B&Q or your local hardware store.

Brian 

[oldschoolrb]

im going have to make somthing fit it , i cant find anything the same