Showing posts with label headsets. Show all posts
Showing posts with label headsets. Show all posts

Monday, 28 October 2024

Shakedowns but no breakdowns...


 








Forty miles in, Ursula and I were bonding very nicely. Then, to my surprise (and good fortune, since this struck 2.5 miles from home) I glanced down to discover the left-hand crank was creeping off. No 10mm Allen key on the multi-tool meant nursing us back, minimising contact with the left side. Having returned, I whipped out 10mm, 5mm Allen keys and of course, trusty torque wrench. I can only imagine things stretched during the formative outings. Pre-load faffed and ultimately everything rejoined and behaving to type, I pondered some more pre-winter prep.  

The recent wet roads had me thinking I should add a protective butyl boot to Denise’s lower headset race. I decided rounding up the tools and taking a decision from there was the best route. Before I knew it, I’d plunged in head-first and met a few surprises. The quill converter had become mysteriously stuck. Nothing a quick tap with a rubber mallet didn’t solve (although I still needed to tap the expander wedge free- a long flat screwdriver and controlled nudge from the mallet fixed this).   

Everything else came apart easily and ample Juice Lubes Bearing Grease clung to the bearings and races. Fork out, I slid the butyl over the head tube and rolled it up. Another quick lick of grease to the lower balls, I reinstated fork and mysteriously had the headset adjustment bang on first time.  

Reassembling the quill adaptor, I added some of the Oxford Assembly Grease to hopefully subvert and further episodes of stubbornness (adaptors are prone to seizing). Same went for the hardware. While the Juice Lubes Bearing Juice is a synthetic, putty type formulation, I applied a quick shot of Muc Off Silicone Spray to the underside of the tube, to help it glide over the headset.  

 

Allowing for the fact I geustimated, rather than measured the length of tube, the coverage is precisely as I wanted it and should, with the added helping of grease, lock the elements out. Lizard Skins and others used to produce neoprene covers, but unless removed every wet ride, could cause moisture to get inside.  

 

Old inner tubes are plentiful and could even be scrounged from your friendly local bike shop. It’s tempting to strip the crankset come next chain replacement and treat the axle to some Peaty’s Speed Grease (for the last word in low friction) but the Wolf Tooth is a premium blend and seems highly effective thus far. Will be interesting to see how it fares against winter’s witches’ brew.  

 

Staying with pleasant surprises, I was sent another set of the WTB Nano, not the TCS tubeless ready versions this time. Their UK importer tells me these are the 120tpi versions employing their SG2 puncture repelling belt that runs bead to bead, so will be interesting to see how they cope in this regard during the darker monthsAside from gravel and indeed “more adventurous touring” they’re also aimed at cyclo cross audiences and, given their “most conditions” persona, it’s not difficult to see how the genres ahem, cross-over. I’ve found them surprisingly good in gloopy UK mud, but again we’ll see how this translates through a mulchy mucky British winter40mm wide, they’re going to be a little portly for more traditional ‘cross bikes, which can typically swallow 32-35mm, 38 if we’re talking a slick commuting/touring tyre for off season’s road duties. 

  

Despite the rise in popularity these past twenty years, cross meets still have a very eclectic flavour. Sure, there are packet fresh disc equipped carbon fibre bling machines but plenty of traditional cross bikes, repurposed tourers and indeed, mountain bikes looping the circuits. Single-speed transmissions keep things rugged and reliable, provided you’re prepared to stick with something around 63 inches…  

 

There are a few folks who also brave it on a fixed. I can see the appeal, but as I say, very much a niche thing. On-One’s Mulo might be a prime candidate. There’s clearance for 43mm tyres without tickling the chainstays and you could either run it with a disc up front or go the old school cantilever route.  

 

The latter are again, still very popular. Lightweight, simple and still relatively effective, set up correctly, with decent quality pads and cablesStandard cables with PTFE linings and stainless-steel inner wires are good staples, although the jump between these and more elite, sometimes sealed systems, such as the Jagwire Road Elite is very palpable.  

 

Aside from the fit n’ forget weather sealing, the inner wires are extremely high quality, thus virtually zero stretch and very tolerant of fine tuning. I’ve set ours up and removed them from Ursula’s callipers with no signs of compression, let alone fraying. Braking is very progressive, stiction free, but again, I’d expect so at this end of the market and again, I’ll see what impact if any, winter has upon their stopping prowess.  

 

Transfil Flying Snakes were another solid (and much cheaper) choice on the sealed front, but fitting was more involved and cable rub could be an issue if you hadn’t used the little protectors or applied some helicopter tape to the head tube and other areas where the outers sit, or brush against the frame. Right, I’ll leave it here with my review of the  Magicshine See Me 50 Mag Light Magicshine SeeMee50 MAG Light | cycling-not-racing 





Wednesday, 8 June 2022

Bum Steer AKA Its Too Tight, Or Its Too Slack..










 I had a model cancel a shoot, which is annoying but comes with the territory. This presented an ideal opportunity to investigate some issues with my fixed gear winter/trainer’s recently replaced Aheadset.  

I’d pensioned off the long serving FSA, which had served faithfully for five fairly hard years. The lower race employed a cartridge bearing, the upper traditional balls, which keeps costs down, but I fancied something a little more refined, hence the Stronglight.  


However, despite having everything correctly aligned, it wouldn’t adjust properly. Removing slop meant tightening bearings to the point the bars would barely turn. Something was clearly very wrong, and I wondered if this was indicative of a more serious fork steerer issue.   


A full strip and diagnostic session followed. I dismissed the Gusset Uni-Lock Headlock, inspected the fork steerer, paying particular attention to the crown area and went the SFN (Star Fangled Nut) route.  


I then dismantled the headset and found while new, it was a “Franksenset”. One cobbled together from two superficially identical but ultimately, incompatible models (which in retrospect, explains the issues and why it was so cheap). The compression ring being a case in point. Given it was boxed and sealed, I had no reason to think anything was "off".  


Decision made. No sense attempting silk purse from sow’s ear. Might as well start again...The cartridge bearings would be useful but otherwise, I put it down to experience. Thankfully, I found a complete, sealed Olite I’d bought a while back. This also proved an ideal opportunity to use a tube of Park PPL grease that was splitting along the seams.  


Lashings of the tenacious green goo delivered to the cups and races-buttery smooth. New stem bolts, (since the Redshift Sports Shockstop Suspension Stem TEST & REVIEW REDSHIFT SPORTS SHOCKSTOP SUSPENSION STEM (sevendaycyclist.com)’s  were getting a little chewed) some fresh thread lock on the disc caliper mount hardware, some spacer-switching... 


Time consuming but formative checks confirmed things were broadly right, so I fine-tuned the preload and snugged the stem bolts to 5nms. Cane Creek SC5 CANE CREEK V BRAKE DROP BAR LEVERS | cycling-not-racing (sevendaycyclist.com)lever engaged and several, neurotic rockings later, I couldn’t trace any slop, so tethered the K-Lite dynamo K LITE BIKEPACKER ULTRA DYNAMO LIGHT | cycling-not-racing (sevendaycyclist.com) cable to the Kinesis fork leg.  


Of course, I wasn't done there!  


Tyres inflated; pedals switched in favour of the Shimano XT, chain tension tweaked and finally, Motoverde PTFE Chain LubeMotoverde PTFE Chain Lube | cycling-not-racing (sevendaycyclist.com) stripped in favour of this Momum Mic Dry Lube. I finished by giving the frameset a light waxing, buffing with a micro fibre cloth, then popped it away.  


There’s a fine line between staying with something until you’ve got it sussed (and sorted) and quitting while ahead.  Sure enough, the following morning’s shakedown ride confirmed the bearings were a little too snug.  

 

Slackening the stem bolts, I loosened the pre-load by 16th turn, did the rocking back and forth test, then tightened the stem bolts to 5nms.  Cue loud (internal) cheer-it was 5.50am and I didn’t think my neighbours would be so appreciative, dare I say empathetic.  When it comes to bearings, headset and bottom brackets, I preside durability and weather sealing above weight and indeed price. Needle bearing models that displace loads were particular favourites 


The Teenage Dream was originally built, (back in ‘91) with a Primax unit featuring these, which might seem strange given needle roller bearing models were a tourists’ choice and said machine was a sunny days, pared to the essential's plaything...I’ve run them up to very high mileages on traditional touring lorries but they’re also a good bet for bikes that regularly lug trailers and indeed, tag-alongs.  


Decent waterproof greases, including the Park, or White Lightning Crystal TESTED : WHITE LIGHTNING CRYSTAL GREASE (sevendaycyclist.com) certainly help extend service intervals, without shortening component life. Mudguards (Fenders) also make a big difference but if this isn’t an option for you, make a boot from old inner tube to protect the lower race.  


Obviously, being butyl go for a synthetic grease, rather than the old school lithium, or PTFE infused blends, since these will rot rubber-another consideration if headsets employ rubber seals.  Green Oil Eco Grease TWELVE MONTH TEST: GREEN OIL ECO GREASE (sevendaycyclist.com) is a surprisingly stoical alternative, albeit not rivalling the Park, or White Lightning blends discussed.