the 'there's no such thing as a stupid question' bike maintenance thread

jethrothe2nd

magicbastarder wrote: »

there's an interesting question - is that the cheapest genuine dura-ace part it's possible to buy separately?

'oh yeah, my bike is a mixture of 105 and dura ace...'

It might well be until you add in delivery from that website which comes in at a whopping 30 quid sterling for express delivery with no other available shipping options.

Have to shop around a bit - I might drop down to the lbs and see if they have one lying around (if I can get the bust one out)

Type 17

Yeah, I only used that link to illustrate the part and its part number, some Googling of the part number is required.

Pity about SJS now being stuck behind the “Brexit Curtain”, they were great for tricky small parts like this.

CramCycle

Type 17 wrote: »

Yeah, I only used that link to illustrate the part and its part number, some Googling of the part number is required.

Pity about SJS now being stuck behind the “Brexit Curtain”, they were great for tricky small parts like this.

Holy f***, just looked at SJS shipping, 35euro for a 2euro part

CramCycle

jethrothe2nd wrote: »

It might well be until you add in delivery from that website which comes in at a whopping 30 quid sterling for express delivery with no other available shipping options.

Have to shop around a bit - I might drop down to the lbs and see if they have one lying around (if I can get the bust one out)

thebikeinn have it for €2.50 and €8.50 shipping with An Post so a better bet even if still shockingly expensive

fat bloke

CramCycle wrote: »

Holy f***, just looked at SJS shipping, 35euro for a 2euro part

Jeez! I predict a new wave of thievery. Like the lads cutting catalytic convertors out of Priuses. Be wary of anyone loitering around coffee shops with a tiny Allen key

68 lost souls

CramCycle wrote: »

Holy f***, just looked at SJS shipping, 35euro for a 2euro part

If its a small part like that chance your arm and ring them or email and ask can they pop it in a iffy bag and royal mail it to you?

magicbastarder

€8.49 (delivered) for the part from bikeinn.

Type 17

68 lost souls wrote: »

If its a small part like that chance your arm and ring them or email and ask can they pop it in a iffy bag and royal mail it to you?

Actually, they state on their delivery info page that this is possible:

Any orders being exported with a packed weight under 100grams can be sent untracked to offer a cheaper postage option for small items. If selecting the untracked method please be aware that this shipping method will take longer than the tracked method - anything up to 30 working days is to be expected.

Might be useful if a part is unavailable elsewhere.

nicksnikita

68 lost souls wrote: »

If its a small part like that chance your arm and ring them or email and ask can they pop it in a iffy bag and royal mail it to you?

Spare yourself the hassle. I tried the above and got an aggressive response that effectively said stump up if you want the part. Needless to say...I didn't stump up

MojoMaker

Which tells me the postage isn't that indicated cost at all.

CramCycle

Other option is too ask your LBS to order it and get it in with their next Shimano delivery. Probably more reasonable than most of the options stated so far.

retalivity

So i hadnt cycled in a week, went down yesterday evening to the basement (I live in an apt block) and saw that the bikes around my bike were all gone with locks cut etc, but mine was still there. Checked the lock on mine all ok, but when I took it out I saw the damage below to the frame - looks like whoever was robbing bikes tried to twist mine over to break the lock, damaging it in the process, and then gave up.
I took it out for an hour or so yesterday to test it, all was ok. Took it to the shop today for them to check it out, they said it was a write off and to not ride it as the carbon fibre could snap if i hit a bad pothole. Said that they could not repair it, there are a few places in Ireland that may be able to fix it but to have a look online and see.
Have any experience with something like this and what can be done? Bike is only 1.5 years old, structurally it seems fine but the LBS guy has me wary now so would like it fixed asap. Any recommendations on carbon repairs in the Dublin area? Is it worth repairing? Looking around broefly online I see what frame repairs are anywhere from €100 - €300+, which seems reasonable...

tomasrojo

Anyone know what tool is required to unscrew the core of a Shimano hub dynamo out of the hub shell?

This sort of thing:



I just checked the serviceable side of the hub, and it's pristine, so the slight resistance I'm getting when the wheel turns must be in the non-serviceable ball bearings in the dynamo core. It's only about €35 to replace the core, and it's done over 35,000km, so it's probably time.

The guy in this video made his own pin spanner to do it (1:50), but if the actual tool doesn't cost that much I'll get that. I don't want to go down the route of using a hammer and chisel or anything like that. I have an old-style bottom bracket pin spanner, but it won't do the job.

https://www.youtube.com/watch?v=MaDhrLFRpx8

tomasrojo

retalivity wrote: »

Took it to the shop today for them to check it out, they said it was a write off and to not ride it as the carbon fibre could snap if i hit a bad pothole.

You can see holes in the frame from the stress of the distortion, so, while I don't know much about carbon fibre, it does look like a write-off, alas.

tomasrojo

(Definitely don't take my word for it though. I know nothing about carbon fibre, except that it's supposed to fail spectacularly when it does fail.)

magicbastarder

that's stuffed; totally. completely unsafe to ride.
i'm no specialist in carbon fibre, not even close, but once there's even a crack in it, it's bin it or repair it, and that looks way too extensive to repair.

ARX

CramCycle wrote: »

Holy f***, just looked at SJS shipping, 35euro for a 2euro part

They told me that "we are only using DHL for export orders due to their reliability compared to other carriers we have tried. We hope to resume normal shipping prices asap" which seems fair enough to me. Funnily enough it was £15 to Australia or Russia and £60 to Sweden when I checked.

8valve

retalivity wrote: »

So i hadnt cycled in a week, went down yesterday evening to the basement (I live in an apt block) and saw that the bikes around my bike were all gone with locks cut etc, but mine was still there. Checked the lock on mine all ok, but when I took it out I saw the damage below to the frame - looks like whoever was robbing bikes tried to twist mine over to break the lock, damaging it in the process, and then gave up.
I took it out for an hour or so yesterday to test it, all was ok. Took it to the shop today for them to check it out, they said it was a write off and to not ride it as the carbon fibre could snap if i hit a bad pothole. Said that they could not repair it, there are a few places in Ireland that may be able to fix it but to have a look online and see.
Have any experience with something like this and what can be done? Bike is only 1.5 years old, structurally it seems fine but the LBS guy has me wary now so would like it fixed asap. Any recommendations on carbon repairs in the Dublin area? Is it worth repairing? Looking around broefly online I see what frame repairs are anywhere from €100 - €300+, which seems reasonable...

Only one man for a carbon repair job like that; Marko, in Altitude, in Waterford.


The man is a a genius when it comes to composites/carbon repairs and has repaired stuff, to better than new, that many others would deem a write off.


Be warned there is usually a waiting list for his work, though.

tomasrojo

tomasrojo wrote: »

Anyone know what tool is required to unscrew the core of a Shimano hub dynamo out of the hub shell?

This sort of thing:

Think this might be the correct tool.

https://hollandbikeshop.com/en-gb/bicycle-tools-maintenance/bicycle-tools/bicycle-hub-tools/shimano-key-hub-dynamo-tl-dh20/?country_id=260

Pretty pricey. I might have to make something after all. The video I linked in that post, and another post on YouTube, seem to have used 8mm bolts filed to be square embedded in some metal as a wrench.

cletus

tomasrojo wrote: »

Think this might be the correct tool.

https://hollandbikeshop.com/en-gb/bicycle-tools-maintenance/bicycle-tools/bicycle-hub-tools/shimano-key-hub-dynamo-tl-dh20/?country_id=260

Pretty pricey. I might have to make something after all. The video I linked in that post, and another post on YouTube, seem to have used 8mm bolts filed to be square embedded in some metal as a wrench.

Jesus.

Does it have the same crenellation pattern as another normal freehub/freewheel tool? If so, it would be much easier to just cut the wall section out of an old one

tomasrojo

cletus wrote: »

Jesus.

Does it have the same crenellation pattern as another normal freehub/freewheel tool? If so, it would be much easier to just cut the wall section out of an old one

Don't think so. Not like the Shimano freehub removal tool I have anyway. The splines would be much bigger.

Could buy the new dynamo core and drop it into a shop that already has the tool to install. I just need it back the same day or back on a Saturday after a Friday drop-off, as it's off the cargo bike, and I need the cargo bike to bring the kids to school in anything like a reasonable time.

I guess the current one should last a while longer,but it's wasting energy on my part overcoming the resistance in the core.

cletus

tomasrojo wrote: »

Don't think so. Not like the Shimano freehub removal tool I have anyway. The splines would be much bigger.

Could buy the new dynamo core and drop it into a shop that already has the tool to install. I just need it back the same day or back on a Saturday after a Friday drop-off, as it's off the cargo bike, and I need the cargo bike to bring the kids to school in anything like a reasonable time.

I guess the current one should last a while longer,but it's wasting energy on my part overcoming the resistance in the core.

Have you pictures of the DIY tools that you've seen?

CianRyan

cletus wrote: »

Have you pictures of the DIY tools that you've seen?

You're gonna have to start charging!

cletus

CianRyan wrote: »

You're gonna have to start charging!

I haven't offered yet

tomasrojo

This was one of the improvised tools. He doesn't say what the bolts were, but in another video the guy mentions 5/16" bolts, filed to have a square profile.

Out of curiosity why would something like that tool be so expensive? it's little more than a fancier something you'd have as part of a socket set and the one linked to isn't even the most expensive from a quick search. To dissuade average Joe from attempting service/repair themselves maybe?

tomasrojo

Yeah, I was expecting €50, max. I guess it's a large-ish piece of hardened steel, precision engineered. Low production volumes maybe?

Based on the video, it's pretty easy job. You just screw out the old core and screw in the new one. There's a simple cup/cone arrangement on the other side of the hub with bearing balls. The replacement part is half the price of the tool!

Yeah possibly that, one on ebay from the US for 10 of their finest bucks https://www.ebay.com/c/1056797415 been years since I've bought from ebay though.

EDIT: Scratch that it's actually not the same one at all.

Large bottle small glass

tomasrojo wrote: »

Yeah, I was expecting €50, max. I guess it's a large-ish piece of hardened steel, precision engineered. Low production volumes maybe?

Based on the video, it's pretty easy job. You just screw out the old core and screw in the new one. There's a simple cup/cone arrangement on the other side of the hub with bearing balls. The replacement part is half the price of the tool!

https://yacf.co.uk/forum/index.php?topic=7768.50

Is that any good to you or is hub very different to the dhn72 and 80 mentioned in that thread?

German YouTube video, along with photos at end of thread from the now gone trinitycycles link buried in thread along with a few helpful posts

Have you an odd wheel size? I've bought full wheels with a dhn80 hub for less than that tool from Rose bikes

tomasrojo

Large bottle small glass wrote: »

https://yacf.co.uk/forum/index.php?topic=7768.50

Is that any good to you or is hub very different to the dhn72 and 80 mentioned in that thread?

German YouTube video, along with photos at end of thread from the now gone trinitycycles link buried in thread along with a few helpful posts

Have you an odd wheel size? I've bought full wheels with a dhn80 hub for less than that tool from Rose bikes

Thanks, will read that now.

It is an unusual size. It's the front wheel of a cargo bike, so it's small. 20"

EDIT: Have read now. Ithink it would be easier just to replace the dynamo core. There are a few videos showing you to open up the dynamo core and regrease it and so on, but it's quite easy to break it, so I'd need to have replacement core to be on the safe side anyway, given how reliant on the cargo bike I am. It's done about 35,000km. I don't feel bad about replacing it!