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[SOLVED] Evo 3 : clicking noise and creaking noise

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Re: [SOLVED] Evo 3 : clicking noise and creaking noise

Postby Winfried on Mon Jul 09, 2018 3:42 pm

The 373 bolt is currently just a bit loose, but still I can't remove it. Should I apply more force?

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Re: [SOLVED] Evo 3 : clicking noise and creaking noise

Postby Blackstridaaustria on Mon Jul 09, 2018 3:47 pm

Winfried wrote:The 373 bolt is currently just a bit loose, but still I can't remove it. Should I apply more force?


No, not more force please :|

I guess you mean the parts below the bolt's head are loose and the head is tight.
That would be for me a sign of a damaged rear joint.
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Re: [SOLVED] Evo 3 : clicking noise and creaking noise

Postby Winfried on Mon Jul 09, 2018 3:52 pm

They don't feel loose, but regardless, I can't loosen the bolt/head as it's very tight.

How can I remove the bolt to check the state of the parts below (cup spring, washers, frame) ?
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Re: [SOLVED] Evo 3 : clicking noise and creaking noise

Postby Blackstridaaustria on Mon Jul 09, 2018 4:03 pm

Bolt 373 is originally glued - it is now very hard to tell why you can't remove the bolt.
Either it is just the glue still holding the bolt - or, that would be dangerous, maybe there is rust in the thread. You are now of course in danger to break the bolt...that would be pretty bad because in that case has the complete axle to be replaced (that again means complete disassembly of the rear part).

I would now try to heat up the bolt's head a little bit, not with flame but with electric heat gun.

There is no other way than that of removing 373 first - it is impossible to get "from the other side" because the axle (at the same time axle stump below 373) goes through the bottom tube.
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Re: [SOLVED] Evo 3 : clicking noise and creaking noise

Postby Blackstridaaustria on Mon Jul 09, 2018 4:09 pm

Do not break the bolt if possible.

Can you tell:
Is it possible to turn the washer and/or cup spring below the bolt's head by hand?

Try that with the bike laying on the left side.
While you try to turn the parts with one hand, use the other hand to pull the right crank gently upwards and downwards - crank in 90° position related to bottom tube (to generate torsion of the bottom tube).
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Re: [SOLVED] Evo 3 : clicking noise and creaking noise

Postby Winfried on Mon Jul 09, 2018 6:03 pm

Thanks for the tip.

Anyway, I took it for a spin, and it looks very much like it's the KS3 that's to blame, as the squeaking only occurs 1) when I pedal 2) harder, ie. going "uphill" or with a bit of headwind: The rest of the time, the bike is perfectly silent, save for the KS3 normal ratchet sound.

Here's a small audio recording (sorry, the windmuf I ordered will be here… next week):

https://vocaroo.com/i/s1RtoVIJcned

Provided the KS3 must be replaced on that two-year-old EVO: How much does it cost, and how much time does it take for a seasoned Strida professional?

Thank you.
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Re: [SOLVED] Evo 3 : clicking noise and creaking noise

Postby Blackstridaaustria on Mon Jul 09, 2018 7:08 pm

Thank you for the sound sample.
Of course I may be wrong, but:

- The behaviour "occuring while applying more load" - does match exactly to the rear joint issue.
- The sound matches, too.


Your last sentence seems very complex therefore I'd like to split my reply into several single parts:

- Yes, it may happen that even younger than two year old EVO drives must be replaced.

- The costs will depend mainly from the workstore's professionality but also their abilities.
(Please note that there are a few special tools required to separate drive and frame, also to remove the beltwheel from the drive.)

- The costs for a single KS3 drive will be around 250 € (it is in stock for example in Germany, confirmed).

- If all required tools (including electric or pneumatic impact screw driver) are on hand and the mechanic familiar with the process a drive change must not take longer than one hour.
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Re: [SOLVED] Evo 3 : clicking noise and creaking noise

Postby Winfried on Mon Jul 09, 2018 7:18 pm

Yes, I'm a complex mind.

So, considering there's a competent Strida dealership available, at worst, it'll cost about €250 for parts + one hour of work €50 ~ €300.

Hopefully — since it's a cheaper operation —, it's the rear hinge that's to blame (€30 parts + 1/2 hour of work €25 ~ €55?).

I'll report back tomorrow after stopping by the dealership.

Thank you.
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Re: [SOLVED] Evo 3 : clicking noise and creaking noise

Postby Blackstridaaustria on Mon Jul 09, 2018 7:50 pm

Winfried wrote:Yes, I'm a complex mind.


You're welcome :twisted:

Winfried wrote:So, considering there's a competent Strida dealership available, at worst, it'll cost about €250 for parts + one hour of work €50 ~ €300.


At worst - and not competent.
A competent Strida distributor would know that the drives are going back to the factory to be refurbished/exchanged - and then returned to the dealer.

That's what I meant before - a really intrigued distributor would stock a few drives to have in time replacement for failed customers drives.
It is not my understanding of service to send the drive to Far East for refurbishing and let the customer wait meanwhile.
At the same time it is truly understandable for small companies, which are not spezialised in Strida, that they neither have special tools nor parts.

Winfried wrote:Hopefully — since it's a cheaper operation —, it's the rear hinge that's to blame (€30 parts + 1/2 hour of work €25 ~ €55?).


Much cheaper as long as you can get rid off the 373 bolt without breaking it.

Winfried wrote:I'll report back tomorrow after stopping by the dealership.

Thank you.


That would be great.
In the case they can't find an issue on the drive I'd recommend you beg for replacing of bolt 373, washer and cup spring.
Always at your - Strida - service 8)
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Re: [SOLVED] Evo 3 : clicking noise and creaking noise

Postby Winfried on Mon Jul 09, 2018 9:08 pm

In the case they can't find an issue on the drive I'd recommend you beg for replacing of bolt 373, washer and cup spring.


In case they tell me the KS3 needs replacement… I'll drop by a DIY bike shop and try to loosen the 373 bolt.
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Re: [SOLVED] Evo 3 : clicking noise and creaking noise

Postby Winfried on Thu Jul 12, 2018 1:50 pm

After a €50 tune-up, it's now perfectly silent, save for the inevitable ratchet sound from the SA gearbox.

You were right: It was indeed the rear joint. The mechanics used vaseline instead of a new nylon washer, though.

Lesson learned: If it creaks while pedaling, brintg it back to the shop for an inspection.
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