Need help with a recent pickup.
 

HI all,
My son is out growing bikes very quickly, so I try to grab a bargain bike any chance I have.
Today I lucked upon a Norco Bigfoot (Year unknown, but suspect 2004 as it is White)
The big was so cheap it just had to have issues !
Sure enough, when I put it together I found out there were no crank arms, chain rings, or pedals.

I'm trying to put it together for cheap, although I would need it to last 1 full year.
So, does anyone know what would fit, what I need ?
It does have a bottom bracket, which feels ok, albeit without the added leverage of crank arms and pedals.
It's got sort of a spline drive off the BB, which I'm not familiar with.

Any top tips greatly appreciated
Many thanks
STULEC52

Sounds like you have an ISIS bottom bracket instead of square taper.

Is there a bicycle co-op near where you live? You would be able to pick up an used crankset and pair of pdeals very cheaply. Please check the length of the bottom bracket spindle as well. Will help with chainline and prevent the cranks from rubbing the driveside chainstay. Normally, a person picks the crankset then matches the bottom bracket to the cranks and frame.

If you don't have a bike co-op near you, let me know what length cranks you need and the size of chainrings. I will look at the co-op that I volunteer at for you tomorrow.

Thank you for your reply.
I certainly don’t know if a bike co-op locally. I was just checking Kijiji and Pinkbike but didn’t really see anything that’d work.
I’ll check out that size tonight when I get home.
Thanks again.
STULEC52

Count the splines, are there 8 or 10?
10 would be an ISIS, 8 would be an octalink, they are not interchangeable, so you need a crankset to match.

It’s 10.
Does that narrow it down for me?
Thank you for the reply
STULEC52.

10 splines would seem to indicate you've probably got an ISIS crankset. Another characteristic that might help you identify an ISIS spindle is that the valleys between splines are rounded. You can do a Google image search for ISIS bottom bracket and visually compare the pictures to your bottom bracket.

There are other splined interfaces, but they generally have differing numbers of splines. Shimano's Octalink had eight splines. Truvativ Power Spline had 12. There might've been others I'm not recalling offhand.

ISIS is a dead standard, so it might be a challenge to find a crankset to fit your bottom bracket with the right chanring sizes and arm length, and in your desired price range. My suggestion, since bottom brackets are generally inexpensive parts, would be to pick a crankset with a common bottom bracket type, then buy a bottom bracket to match your new crankset. Going this route could be cheaper than sourcing an ISIS crankset and it'll give you more crankset options to choose from.

If you look up the Bigfoot specs for 2007, it doesn't list the BB. For 2008, it lists a Howitzer Spline BB (by Truvative).

The User Guide is here. Does this look like your spindle?

I agree with SkyDog: It may be cheaper to replace the BB with a commonly used geometry, and a crankset to boot. You'd want to be sure that you get the dimensions of the BB and the threads or other interface accurately to do this.

https://drive.google.com/drive/folde...2tpZkd6cl9FMzA

here's a close up pic

Get a crankset and get the BB that matches it. Very likely your cheapest option.

probably a good idea :-)
Off to search local classifieds, see what I can find.

UPDATE

Found someone locally with complete BB / Crank / chainring set
couldn't get the old ISIS stuff off. So, took it to my local friendly bike shop, just having them install and set it up for us.
I just don't have all the tools to do it myself, plus, it'll be setup correctly by folks that know what they are doing :-)