cook bros cranks???

[dwain dibbly]

any idea if these should have caps on them?

[MartyC]

No, they shouldn't have caps on them 

[dwain dibbly]

No, they shouldn't have caps on them 

made me wonder because there is threads on the inside
like there should be a screw in cap?? ??

[dj_benice]

hmmmmm  these must just be a lucky fit 

[dwain dibbly]

hmmmmm  these must just be a lucky fit 

did they come ith them?

[MartyC]

hmmmmm  these must just be a lucky fit 

Sweet, Pete 

I seem to remember them bitd not having caps on them but they do look good with them 

[Longun]

Is the internal thread not simply for the crank extractor tool when you want to remove them..........................and give them to me. 

[stidds]

I only ever used Cooks Cranks bitd and never had end caps on them.

[gossa]

Those Cook Bros Racing cranks pictured are the later ones usually made for the MTB market and yes, mountain bikers might have run crank caps on them to keep the mud out. Early Cook Brothers Racing (italicy font) BMX cranks didn't come with a cap, the axle bolt was quite big and yes the threads were mainly for a crank extractor.

[dj_benice]

http://www.radbmx.co.uk/forum/index.php'topic=51134.30  mr dains first gen ones on page 3 have cap's one set are flat the other domed like the ones on mine

[MartyC]

Intersting article on cranks in BMX Plus.... note the Cooks Bros ones - no caps.... and the amazing but unrelated Flight Crank timeline....

[diesel]

This might help: Courtesy of Si

1st generation Cook Bros. Cranks - note the writting on the arms is a script font not blocked.

[dwain dibbly]

so any idea when mine date back to?
are mine 2nd gen

[diesel]

They look to be 2nd generation (1982/84 at a guess) - any more photos?

- Are the arms etched or is that a sticker on them?

- Do they have a notch cut in the back of the drive arm or are they both perfectly smooth?

3rd generation Cranks have the Larger text and often have a small notch cut in the back of the drive side for chain clearance.

4th generation Have the hollowed out arms and these are mountain bike XC cranks.