Crank And Pedal Problem. Pics Within

[dann2707]

I am in the middle of replacing my pedals on my t-pro. However I've come across a little problem

Today I brought my crank and pedal to school as the pedal wouldn't loosen from the crank so it had to be removed as I couldn't for the life of me do it at home without a secured vice.

We managed to remove it however the only way it would come off would be that the pedal which screws inside another screw like thread which in turn screws into the thread in the pedal.

Now as this seperate piece of metal was pretty much welded shut to the pedal it couldn't budge and as mentioned, would only come with the pedal.

So now the thread in the crank is wayyy too big for my new (ish) pedal to go into due to this stray piece of metal being removed with the pedal. Pics kinda explain what I mean. Now what do I do? Look for this thread adapter piece which I can't find anywhere as I have no idea what it's called!?

Cheers

Apologise for the crap pics..blackberry cam is poo!

[Ash-Kennard]

ohh you mean the pedal threads have come off and gotten stuck in the the crank?

if so get some plyers or similar, slide them in the crank hole, open them out so they are firmly gripping the inside of the threads stuck in and eventually twist them out. depending on how stuck in they are.

or buy new cranks and pedals and put some grease in next time.

Edited May 25, 2010 by Ash-Kennard

[brad1995]

You could always take the crank back to school and go to the head of engineering or whatever and ask them to tap the threads to put them back to the original size. Check up on what size threads they are though, otherwise if you get the wrong size the pedal won't go in properly.

[dann2707]

ohh you mean the pedal threads have come off and gotten stuck in the the crank?

Yeah, that sounds about right, only, nothing has come off (apart from pedal itself as I removed that for ease to work with)

I'm not sure if I'm explaining properly what I mean. I'll draw what I mean and take a pic. Cheers guys

[PeanuckleJive]

You could always take the crank back to school and go to the head of engineering or whatever and ask them to tap the threads to put them back to the original size. Check up on what size threads they are though, otherwise if you get the wrong size the pedal won't go in properly.

the hole is too big, how does he tap it to the original size?

Tarty can helicoil it for you

[dann2707]

Taken a pic of my drawing. Hope this helps explain more?

[brad1995]

Ohh .. I didnt read it propperly. I though some of the pedal threads came off in the crank making the hole smaller

Like what PeanuckleJive said, Tartys can helicoil it.

[PeanuckleJive]

I had no idea the muscleman cranks had them thread inserts, I dunno if you can buy them, talk to the guys at onza though

[dann2707]

I had no idea the muscleman cranks had them thread inserts, I dunno if you can buy them, talk to the guys at onza though

maybe this problem is hinting for me to upgrade anyway

[Ash-Kennard]

oh right didnt realise they had inserts you sure you havent just bought the wrong size pedal?

i advise you heat the crank up so it expands just enough for you to wedge something in there and unscrew it.

i dont know why the insert isnt a standard pedal thread size though.

[PeanuckleJive]

maybe this problem is hinting for me to upgrade anyway

yup!

[dann2707]

oh right didnt realise they had inserts you sure you havent just bought the wrong size pedal?

i advise you heat the crank up so it expands just enough for you to wedge something in there and unscrew it.

i dont know why the insert isnt a standard pedal thread size though.

The pedal I removed was a wellgo platform so surely not? I'm changing them as I don't really like them and it was an odd pair.

Why would I need to heat the crank up? Surely I need to remove the insert from the existing pedal so the crank isn't really involved with all this?

I'm so confused haha.

[JD™]

Ok. Let me see whether I've got this right then we can all start afresh and sort your problem

You've taken the old pedal off, and the insert is still attached to the old pedal. This means the new pedal won't screw into the crank because there's no insert there for it to thread into. Right?

That being the case, you either need a new insert or some new cranks. Or, as was mentioned, get Tarty to do their helicoiling unless your tech geezer can do it for you.

[dann2707]

Ok. Let me see whether I've got this right then we can all start afresh and sort your problem

You've taken the old pedal off, and the insert is still attached to the old pedal. This means the new pedal won't screw into the crank because there's no insert there for it to thread into. Right?

That being the case, you either need a new insert or some new cranks. Or, as was mentioned, get Tarty to do their helicoiling unless your tech geezer can do it for you.

Absolutely spot on

I'll look into helicoiling and see if school have the right equipment for the job

Cheers matey

[PeanuckleJive]

Ok. Let me see whether I've got this right then we can all start afresh and sort your problem

You've taken the old pedal off, and the insert is still attached to the old pedal. This means the new pedal won't screw into the crank because there's no insert there for it to thread into. Right?

That being the case, you either need a new insert or some new cranks. Or, as was mentioned, get Tarty to do their helicoiling unless your tech geezer can do it for you.

Finally, Somebody else who read the thread properly too

[JD™]

Finally, Somebody else who read the thread properly too

Yea noticed you'd said that earlier, but it looked to get lost in the thread... To be fair, the picture drawn makes it look like the insert is separate to both the crank and pedal, so I can see why some got confused... Hopefully the guys school can sort it

[Dan6061]

I had this problem with my Tensile cranks.

This is how I managed it:

Soak the pedal/insert in WD40.

Screw it back on the crank, and then tap the spanner on the pedal with a hammer/mallet.

Each time, tighten it back into the crank tighter, so the insert is tight in the crank. Then just keep spraying and tapping it. Hopefully the WD40 will soak through between the threads, and the shock from the hammer will loosen the pedal in the insert, instead of the insert in the crank.

I can't promise it'll work though, you might just end up loosening and tightening the insert over and over, and get no where.

[Ash-Kennard]

any luck with this yet?

[dann2707]

No sir.

I went to my local bike shop and asked if they sold the inserts, which they didn't.

So the guy offered me to leave the crank and pedal with him and he'll try his best to get it out of the insert and told me to give him a call on Thursday (my 18th birthday. woopa!).

So I'll ring him tomorrow

[CC12345678910]

just buy a new insert from onza or tarty and put ur new pedals on...

I'm guessin the inserts for the tensile cranks will fit as onza stuff is designed by the same people.

DO NOT helicoil. there is just no need.

EDIT: PLAN B : we use this method at college.

STEP 1. Find a nut that will thread on to the insert. (it'll be a common size, might take a bit of lateral thinking)

STEP 2. Place said nut into a vice and tighten

STEP 3. hacksaw into the flat that currently faces upwards

STEP 4. thread pedal + insert into nut (which BTW protects the pedal threads perfectly)

STEP 5. Tight vice good & proper BUT DONT MONSTER IT.

STEP 6. undo pedal normally

Now undo the vice and retrieve the insert and put it ur new pedal axle with a good smothering of grease (dito the outside of the insert

& wind the pedal in normally

SORTED

Hope this helps

Ciaran

Edited May 27, 2010 by CC12345678910

[dann2707]

just buy a new insert from onza or tarty and put ur new pedals on...

I'm guessin the inserts for the tensile cranks will fit as onza stuff is designed by the same people.

DO NOT helicoil. there is just no need.

EDIT: PLAN B : we use this method at college.

STEP 1. Find a nut that will thread on to the insert. (it'll be a common size, might take a bit of lateral thinking)

STEP 2. Place said nut into a vice and tighten

STEP 3. hacksaw into the flat that currently faces upwards

STEP 4. thread pedal + insert into nut (which BTW protects the pedal threads perfectly)

STEP 5. Tight vice good & proper BUT DONT MONSTER IT.

STEP 6. undo pedal normally

Now undo the vice and retrieve the insert and put it ur new pedal axle with a good smothering of grease (dito the outside of the insert

& wind the pedal in normally

SORTED

Hope this helps

Ciaran

Thanks for this. But I think I might just get some new cranks as today I've been told by the bike shop guy that it's not going to come out.

May aswell!

[Ash-Kennard]

it will depend on which crank arm it is for that though as the pedal threads go backwards on one of them

[bikerboi46468]

Had the same problem Onza parts are pants try to avoid them as much as possible.

also if you are getting new cranks i would also advise getting the isis type as they are Amazing. i have had no problems since replacement!

sorry about the late reply just had to get me nose in he he

[PeanuckleJive]

Had the same problem Onza parts are pants try to avoid them as much as possible.

Ell

Oh

Ell.

[AlexxRogers]

http://www.chainreactioncycles.com/Models.aspx?ModelID=27072

These may help?

Alex.