http://citycyclingedinburgh.info/bbpress/ CityCyclingEdinburgh Forum » Topic: I were wrong about those bolts en Fri, 17 Apr 2026 01:28:32 +0000 http://citycyclingedinburgh.info/bbpress/topic.php?id=17678&page=2#post-250817 Mon, 22 May 2017 20:17:29 +0000 gembo 250817@http://citycyclingedinburgh.info/bbpress/ <p>Beth also very close to my childhood stomping ground. My granny used to make wardrobes there and occasionally took us to the George picture house. Not often in case we became too attached to her.</p> <p>We did go to Beith Fair every year, it rained.</p> <p>Speedway, Walters, candy floss.</p> <p>There is a song I can sing on PY night out about Beith, kilbirnie and lochwinnoch. </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=17678&page=2#post-250816 Mon, 22 May 2017 20:10:58 +0000 I were right about that saddle 250816@http://citycyclingedinburgh.info/bbpress/ <p>@Ed1</p> <p>I believe that the separatist in question may have been flirting with <a href="http://www.legislation.gov.uk/ukpga/1983/2">Section 113(2) of the Representation of the People Act (1983)</a> there, but hey-ho you got your bike fixed. </p> <p>PS My brake post survived moderately severe wilderness usage yesterday. </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=17678&page=2#post-250810 Mon, 22 May 2017 14:27:34 +0000 Ed1 250810@http://citycyclingedinburgh.info/bbpress/ <p>My seat bolt snapped again this time on my way back from Ardrossan harbour near Beith on the way to Paisley . I noticed a Saltire flying behind the wall on the other side of the road, there was a house on a small backroad with an ornamental bike in the garden and SNP on the roof. I knocked on a door to ask what way is the nearest station as my phone was flat. The person I asked had a workshop in their garage working on old motor cycles and another old bicycle. He made me a seat bolt out of cutting and grinding a car/motorcycle long bolt and gave me ½ inch wrench to adjust it with. My Halfords bolt lasted 7 weeks, but it may not have been the bolt as the helpful person advised my seat post groves looked warn down. All he asked was that I vote SNP. </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=17678&page=2#post-250296 Tue, 16 May 2017 20:47:51 +0000 I were right about that saddle 250296@http://citycyclingedinburgh.info/bbpress/ <p>@Klaxon</p> <p>I am quite disarmed. Thank you. </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=17678&page=2#post-250173 Mon, 15 May 2017 20:07:13 +0000 Klaxon 250173@http://citycyclingedinburgh.info/bbpress/ <p>As shown this was no bodge. It is a properly thought out repair second to only a new factory drilled frame </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=17678&page=2#post-250165 Mon, 15 May 2017 18:55:14 +0000 gembo 250165@http://citycyclingedinburgh.info/bbpress/ <p>Battle of the Bodge? </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=17678&page=2#post-250154 Mon, 15 May 2017 14:47:17 +0000 I were right about that saddle 250154@http://citycyclingedinburgh.info/bbpress/ <p><em>at some point probs just get new forks?</em></p> <p>I'm a bit of a hippy. Repair things until they can't be repaired and then replace them.</p> <p>These are the third forks to have gone on this frame in its seventeen years of service. I expect them to last another four or five years. I'll replace all the seals this autumn some time.</p> <p>I started drilling the hole by twirling a 1mm drill between finger and thumb for maximum precision.... </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=17678&page=2#post-250153 Mon, 15 May 2017 14:27:49 +0000 crowriver 250153@http://citycyclingedinburgh.info/bbpress/ <p>A Bodge Too Far?</p> <p>(Dah dah di dum dum, dah dah di dum dum, dee dee dit dah di dah di dum dum;<br /> Dah dah di dum dum, dah dah di dum dum, dee dee dit dah dee di dummm...)</p> <p>Magnesium, epoxy resin, brass, aluminium or steel bolt? It's like scratch building scale model steam engines or something.</p> <p>Well bodged I suppose ( steady hand needed on the drilling!) but at some point probs just get new forks? </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=17678&page=2#post-250146 Mon, 15 May 2017 13:24:41 +0000 gembo 250146@http://citycyclingedinburgh.info/bbpress/ <p>Double Bodge by Judy Blum (obscure reference to children's author)</p> <p>Re-bodge</p> <p>Bodge on Bodge</p> <p>none doing it for me </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=17678&page=2#post-250120 Mon, 15 May 2017 07:28:10 +0000 I were right about that saddle 250120@http://citycyclingedinburgh.info/bbpress/ <p>@kaputnik</p> <p>I cannot answer your question, but many thanks for not mentioning tri-metalic corrosion.</p> <p>I did enjoy my precise, confident Helicoil work being the source of a luminous waterfall of shame. </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=17678&page=2#post-250112 Sun, 14 May 2017 23:36:23 +0000 kaputnik 250112@http://citycyclingedinburgh.info/bbpress/ <p>This is taking bodging into another dimension! (What is the correct term for a bodge with 2 distinct phases?) </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=17678&page=2#post-250095 Sun, 14 May 2017 19:17:12 +0000 I were right about that saddle 250095@http://citycyclingedinburgh.info/bbpress/ <p>So I did a bad thing to my front brake too. It's like I have become IWRATS Destroyer of Bicycles.</p> <p>The fork lowers are magnesium and very soft. The lower bolt hauled and stripped the female thread, which I repaired with a Helicoil insert. I knew the upper one would go too, it did and I Helicoiled that too. Except the male thread on the bolt kept stripping. Close inspection revealed the cause - sheer carelessness on my part.</p> <p>I'd accidentally swapped the bespoke Helicoil tap and the standard M8 tap in my tool boxes. The Helicoil tap is M7 point something. I'd tapped the hole too big. Drat. Rats.</p> <p><img src="http://cdn.ipernity.com/200/10/86/44791086.aad0d0dc.240.jpg?r2"></p> <p>What to do? Ah yes. Use epoxy resin to weld an M8 brass bolt into the M8 tapped hole;</p> <p><img src="http://cdn.ipernity.com/200/10/54/44791054.6dfdeb15.240.jpg?r2"></p> <p>Saw the top off flush and mark up with the bolt position;</p> <p><img src="http://cdn.ipernity.com/200/10/64/44791064.fbfe36ed.240.jpg?r2"></p> <p>Drill a 4.5 mm hole into the brass bolt and tap that to M6;</p> <p><img src="http://cdn.ipernity.com/200/10/74/44791074.1821aeba.240.jpg?r2"></p> <p>I'm still not sure if the shame at borking it in the first place is overcome by the pride of bodging it back into life. </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=17678&page=2#post-248859 Fri, 05 May 2017 08:35:12 +0000 I were right about that saddle 248859@http://citycyclingedinburgh.info/bbpress/ <p>@crowriver</p> <p>I'm saying that I can't see any plausible mechanism by which it would accelerate bimetallic corrosion and that I have no concern about using it in this application. </p> <p>Water, air and salt are the enemies of ferrous metals, colloidal copper is but a bystander. </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=17678&page=2#post-248845 Thu, 04 May 2017 23:22:18 +0000 crowriver 248845@http://citycyclingedinburgh.info/bbpress/ <p>@IWRATS, so are you trying to say copaslip won't accelerate galvanic corrosion?</p> <p>I have a big tub of the stuff in the garage BTW, but I only use it on alloy/alloy or steel/steel connections. If it's alloy/steel I use plain old axle grease, that brown gooey stuff. Works a treat. </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=17678&page=2#post-248843 Thu, 04 May 2017 23:12:46 +0000 I were right about that saddle 248843@http://citycyclingedinburgh.info/bbpress/ <p>It's not a solution as it has two distinct phases. That's what gives grease its low shear viscosity compared to fats and jellies. </p> <p>Quite which of the phases is continuous I do not know. </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=17678#post-248842 Thu, 04 May 2017 23:04:37 +0000 Frenchy 248842@http://citycyclingedinburgh.info/bbpress/ <p>I'd just call it a solution, to be honest. But not quite my area of expertise (certainly not in real applications, anyway). </p> <p>I'm maybe misunderstanding too, I was assuming that the surfactant and the oil were miscible. Is the oil the majority or the minority phase? I'd call it an emulsion if only one of the passes was continuous. </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=17678#post-248838 Thu, 04 May 2017 22:46:34 +0000 I were right about that saddle 248838@http://citycyclingedinburgh.info/bbpress/ <p>@Frenchy</p> <p>Can you think of a better term for an oil dispersed in a soap? I can't. It's not a solution, it's not a colloid. I consider it to be an emulsion as the two components are immiscible fluids physically distinct from each other and microscopically divided. </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=17678#post-248825 Thu, 04 May 2017 22:01:36 +0000 neddie 248825@http://citycyclingedinburgh.info/bbpress/ <p>You need to be careful if putting grease of any sort on bolts, to avoid over-tightening them. Especially if using a torque wrench - the grease will allow the torque and hence tension in the bolt to become much higher than it should be.</p> <p>Torque wrench settings become null and void if grease is used. Particularly important for the wheel bolts of 5 - 8 seat combustible metal boxes*</p> <p>Fleas are killed easily by putting them on a bar of soap, or maybe some Molybdenum Disulphide if you fancy giving them a luxury death.</p> <p>* ©️ Bob Gunderson </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=17678#post-248813 Thu, 04 May 2017 20:57:57 +0000 gembo 248813@http://citycyclingedinburgh.info/bbpress/ <p>I did get a row off a rubbish clown once for trying to get in the ring, and a kick from a burroo. </p> <p>Clown smelled strongly of drink. Mule v bad tempered. </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=17678#post-248810 Thu, 04 May 2017 20:52:43 +0000 chdot 248810@http://citycyclingedinburgh.info/bbpress/ <p>In your ear? </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=17678#post-248808 Thu, 04 May 2017 20:43:52 +0000 gembo 248808@http://citycyclingedinburgh.info/bbpress/ <p>The smell of the crowd, the roar of the greasepaint. Every circus I have ever been at has sad animals, drunk clowns and you get a free flea </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=17678#post-248805 Thu, 04 May 2017 20:30:25 +0000 Greenroofer 248805@http://citycyclingedinburgh.info/bbpress/ <p>I'm slightly concerned that I may be the 'proper metallurgist' that IWRATS was referring to. All my proper metallurgy was 25 years ago, and by the end had a very narrow focus on obscure techniques for high-productivity continuous casting of aluminium beverage can alloys. Since then I've worked in a bank. I'm going to sit this one out... </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=17678#post-248803 Thu, 04 May 2017 20:07:59 +0000 Frenchy 248803@http://citycyclingedinburgh.info/bbpress/ <p>@IWRATS - a surfactant dispersed in a liquid isn't an emulsion. You need two immiscible liquids and something to prevent separation (normally a surfactant) to make an emulsion. </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=17678#post-248800 Thu, 04 May 2017 19:57:00 +0000 hunnymonster 248800@http://citycyclingedinburgh.info/bbpress/ <p>Yep most "grease" is actually lithium soap (not as good for your hands as Fairy liquid and absolutely cack for cleaning stuff) as IWRATS says with various goodies mixed in Molybdenum Disulphide being a popular one (Molyslip) or the elemental copper in Copperslip (always referred to as slopperkip here) </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=17678#post-248797 Thu, 04 May 2017 19:49:38 +0000 I were right about that saddle 248797@http://citycyclingedinburgh.info/bbpress/ <p>I quite like circuses, but when I was little the animals were sad and the clowns were drunk and I got a flea.</p> <p>And now I'm thinking about making grease with colloidal gold in it as the ultimate non corrosive release agent. </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=17678#post-248796 Thu, 04 May 2017 19:40:36 +0000 I were right about that saddle 248796@http://citycyclingedinburgh.info/bbpress/ <p>@crowriver</p> <p>Grease is an emulsion of of a surfactant and an oil. Bathroom soap is one surfactant. It's largely sodium stearate. Lithium grease could have lithium stearate as the surfactant. Molybdenum grease has moybdenum sulphide as the surfactant. There are loads of other ones.</p> <p>Copper grease contains a soap, but it isn't copper stearate. It could well be lithium stearate. What it does have is colloidal copper added to a rather fluid classic grease. </p> <p>If you tried to use a grease with colloidal lithium (and I can't think how you'd even make that) you would quickly have a fire on your hands. </p> <p>It's possible that the bikeradar guy may not <em>quite</em> know what he's talking about. Copper grease is commonly used in automotive brakes where bimetallic corrosion is a huge problem. It is an inert release agent designed to stop components sticking together rather than a lubricant. I have no concern at all in using it between steel and aluminium alloy pieces. </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=17678#post-248793 Thu, 04 May 2017 19:28:16 +0000 gembo 248793@http://citycyclingedinburgh.info/bbpress/ <p>@IWRATS, yes as you know from the early doors DVDs I do like circuses but not temporary traffic lights</p> <p>My new early doors show is Two Doors Down which is Rab C transferred to Giffnock if you know your outlying posh bits of Glasgow (note, not posh) </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=17678#post-248791 Thu, 04 May 2017 19:21:34 +0000 crowriver 248791@http://citycyclingedinburgh.info/bbpress/ <p>---</p> <p>on things that are likely to get the oxide scraped off (i.e. aluminium screws in a steel thread) then you should use lithium* grease instead. A few years ago I made the mistake of putting copper grease on the aluminium idle screws on my car's carburettor which had steel thread sleeves. They were seized within a week and I had to get the impact driver out on them. </p> <p>Leaving aluminium/steel in bare contact will definitely lead to seizing though. If in doubt, use lithium grease, but copper grease is fine for almost anything you'll come across on a bicycle. </p> <p>* lithium grease doesn't react because the lithium in it is already reacted. Copper grease contains unreacted particles of copper.</p> <p>---</p> <p>From:</p> <p><a href="http://www.bikeradar.com/forums/viewtopic.php?t=12698017" rel="nofollow">http://www.bikeradar.com/forums/viewtopic.php?t=12698017</a> </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=17678#post-248790 Thu, 04 May 2017 19:21:27 +0000 I were right about that saddle 248790@http://citycyclingedinburgh.info/bbpress/ <p>Do you like circuses, @gembo? </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=17678#post-248788 Thu, 04 May 2017 19:03:53 +0000 gembo 248788@http://citycyclingedinburgh.info/bbpress/ <p>Was this all about back brakes? </p>