Bike strip help needed - with pics!

[AWG]

Hi Folks,
I am stripping down an old i-Drive Comp with a view of repainting. I am a sucker for making good of old so whilst most would bin and buy something that's not really me

Anyway, I have come to a brick wall in two departments. a) removing the crank, b) releasing the fork.





With regard to the crank, I am used to square tapered bottom brackets therefore my tool just simply screws straight through as there is nothing to push against (if that makes sense). I am sure I am missing something obvious and hoping that you could advise where I am going wrong.

The fork issue, again not exactly what I have been used to on previous bikes. I am guessing this is a different headset maybe? But assumed the forks would have come loose when I unscrewed the top bolt but this did not happen.






Any suggestions?

Thanks for your time.
Andy

[anonymous-user]

Crank - what is on the other side? i.e. if you remove the left hand crank arm, does the right side and the spider just pull out?

https://www.parktool.com/blog/repair-help/crank-re...


Forks, slip that split ring at the top out with a bit of gentle encouragement prising from underneath and I'd be surprised if the forks don't then come out very easily

Edited by anonymous-user on Saturday 30th June 11:19

[AWG]

JPJPJP, It worked! Many thanks. The fork is now out.

The other side of the crank is much the same as the drive side.






I'm boggled by this one.

[frisbee]

A lot of cranks have an inner bolt that unscrews into an outer cap that extracts the crank.

[Willow1212]

If you have a square taper bb removal tool it might work if you can give it something to push against on the end of the hollow axle. I seem to remember a 5p coin may work?

[anonymous-user]

good news on the forks

if you undo those hex bolts on the bottom bracket bit, what happens?

[Smoggy XJR]

Hi.

I'm not a cyclist but if you Google the US patent number on the crank you can see an exploded view of how it fits.

hope this helps.

TIM

[gazza285]

What you can do is put the crank bolt back in the opposite side, then use a length of steel rod or an old bolt shank through the axle, cut to length, then use your existing crank puller. The puller then has something to push against.

Or you can buy an ISIS crank tool...

Edited by gazza285 on Sunday 1st July 18:11

[AWG]

Thanks for the responses guys, I'm going to have another go tonight.

JPJPJP
Not sure, I'm guessing it holds the centre mechanism together but will loosen them to find out.

Smoggy XJR
That's a rather good idea! I'll check online.

Gazza285
Will need to find a way milling a piece of steel at the right radius I guess to force it out, but would imagine that would indeed work.

[lufbramatt]

gazza285 said:

What you can do is put the crank bolt back in the opposite side, then use a length of steel rod or an old bolt shank through the axle, cut to length, then use your existing crank puller. The puller then has something to push against.

Or you can buy an ISIS crank tool...

Edited by gazza285 on Sunday 1st July 18:11

^ this works, used to do the same thing on old Shiumano octalink cranks which are very similar to ISIS.

Some cranks used to have self extracting crank bolts (separate collar screwed to the crank with a pin spanner) which may be another option?

https://www.tredz.co.uk/.FSA-Self-Extracting-Crank...

[AWG]

OK, I have tried the patent search. This did work and brought up schematics but unfortunately no conclusion could be drawn from them

I'm going to try putting the bolt on the other side, fingers crossed!

[Runes]

You just need a tool with a slightly larger diameter head to push again the bottom bracket spindle. You can get one that comes with the appropriate head quite cheaply:

https://www.amazon.co.uk/Silverline-241095-Compact...

Or maybe you can use an appropriately sized washer, or perhaps even a coin, to allow you to use your square taper crank puller.

[AWG]

GAZZA285 a big thank you is required. Tried your suggestion of the steel rod (a long bolt was all that came to hand)






To reveal this..




Once frame is painted, first thing on the shopping list will be a square tapered bottom bracket!!

Thanks for your help gents, much appreciated.