Cannondale 'Headshok'...

Cannondale 'Headshok'...

Author
Discussion

gazza285

9,810 posts

208 months

Friday 23rd February 2018
quotequote all
The mech on there will work with your ten speed shifters.

If you have a 2x10 set up already then use that. I can't see the logic of buying an old and fairly niche bike, then sticking a new groupset on it. Use an 8/9 speed MTB mech with your ten speed shifter, and you can get a 36t cassette on it if you are running out of gears...

yellowjack

Original Poster:

17,078 posts

166 months

Friday 23rd February 2018
quotequote all
gazza285 said:
The mech on there will work with your ten speed shifters.

If you have a 2x10 set up already then use that. I can't see the logic of buying an old and fairly niche bike, then sticking a new groupset on it. Use an 8/9 speed MTB mech with your ten speed shifter, and you can get a 36t cassette on it if you are running out of gears...
OK. Another new option has just (potentially) raised it's head.

A vet acquaintance of mine has just upgraded his bike to 1 x 11. I joked when we were last out riding that I would happily take his 2 x 10 kit off his hands as spares for my MTB. So potentially there is a bunch of XT/SLX ten speed kit coming my way, as he sent a text this morning suggesting I collect it (with no mention of money changing hands).

So....

Upgrade rear end to ten speed MTB stuff? Mixed with a road compact chainset? Will road and MTB shifters pull the same amount of cable? Are they compatible? How much of the SLX/XT group is coming my way? New bigger rings on the MTB crankset? Back to flat bars if I get shifters as well?

Arrrrrrrrrgh! wobble

It's embarrasing too, being offered used kit for free (Mr Vet Surgeon knows I'm not currently working). Do I offer to pay for the stuff? Will this offend him? Is he expecting payment? Maybe I should just "grow a set" and text him to ask?

I'm coming around more and more to the idea of just riding the damned thing as it is now, and forgetting about upgrading/improving it. confused

gazza285

9,810 posts

208 months

Friday 23rd February 2018
quotequote all
Shimano ten speed MTB has a different cable pull to ten speed road stuff, so that's out. The chainset should work with your road mech, should you wish to use that.

Barchettaman

6,308 posts

132 months

Friday 23rd February 2018
quotequote all
Cool bike - but then I like weird drop-bar conversions!

I’d stop worrying about upgrading the drivetrain, just get all the contact points in the right place, get out there & ride the snot out of it!

::edit:: Just had another look at the photo. There’s a LOT of seatpost showing - not a problem, but make sure the post is not clamped below the minimum as the seattube could crack.

It looks to have a steep seattube angle with a very slack front end, so handling might be a bit....unique.

I would also lose that cacky sprung seatpost ASAP, hateful things!

Edited by Barchettaman on Friday 23 February 15:20

yellowjack

Original Poster:

17,078 posts

166 months

Friday 23rd February 2018
quotequote all
Barchettaman said:
Cool bike - but then I like weird drop-bar conversions!

1. I’d stop worrying about upgrading the drivetrain, just get all the contact points in the right place, get out there & ride the snot out of it!

2. Just had another look at the photo. There’s a LOT of seatpost showing - not a problem, but make sure the post is not clamped below the minimum as the seattube could crack.

3. It looks to have a steep seattube angle with a very slack front end, so handling might be a bit....unique.

4. I would also lose that cacky sprung seatpost ASAP, hateful things!
1. I'm slowly coming to that conclusion myself (there's a pretty Italian frame on ebay right now that I could ruin by fitting my Shimano Ultegra group to! hehe )

2. Rest assured, with my short fat hairy legs on it, there'll be a whole lot less seat post showing (presuming the seat post isn't stuck, of course...)

3. Geo never worried me, so long as the bike fits. I grew up in the 70s and 80s riding bikes I was assured I'd "grow into" so I was used to some idiosyncratic handling traits in my bikes.

4. We'll see about the seat post. I've never been a fan, but equally I've never owned one, so I'll reserve judgement until I've ridden it a bit.


As for collection, that's planned for tomorrow. The seller wants it out of his hair by 2.30 pm (in time for the Six Nations rugby) and I'm hoping to get there between 12 and 1. Pay for it, give it a quick blast locally to him (Clacton sea front looks favourite), then if it all rides OK and I feel I can trust it, I might head up to an old stomping ground for a trip down memory lane on the way home. I'll take some tools, and my own shoes/pedals to start getting those contact points improved.

I've had email and text contact with the seller, stalked him on Google Maps (satellite view shows the garden looking pretty much as it is in the photos so I'm confident I'm not off on a wild goose chase). This has all gone quite smoothly so far, and it's 'cash on collection' so I reckon I'm reasonably safe from being scammed.

I also took delivery of the bulk of a 10-speed MTB gearset today. A friend getting rid of his 10 x 2 kit has given me an XT Shadow Plus rear mech with an FD-M615 front mech and some SLX shifters. Along with some generic spare parts including some properly dorky big amber wheel reflectors. My wife had a face like thunder earlier when she found out I was hoarding bike bits again, "but they're spares for my MTB dear - it'll save money in the long run"...

...all I have to do now is decide which of the manky frames at the back of the garage will have to be got rid of to comply with her "one in, one out" rule. frown

yellowjack

Original Poster:

17,078 posts

166 months

Saturday 24th February 2018
quotequote all
OK.

It's here, at home, in the back of the car right now.

I collected it this afternoon. The seller wasn't particularly talkative, and expressed no interest in my plans for it. So I just paid him and left. In fairness, though, he was in the middle of demolishing a detached garage so I can see why he didn't want to get too involved in a conversation about a bike he wanted rid of.

It's pretty much rideable right off the bat. The tyres were cheap, nasty, generic Sri Lankan made 700 x 28c things that had seen better days. They came off straight away to be replaced by a set of Continental Tour Ride 38(ish) x 700c tyres off my wife's old bike. The rear wheel gave up it's rubber without a fight, but the front had a different rim (Mavic CXP21 I think) and that cost me two broken tyre levers before I resorted to a "feckin' mahoosive screwdriver" to get the tyre off.

I also switched the toe-clip pedals for my Shimano SPD pedals, and strapped on a Garmin mount and some lights. All this was done beside my car at Holland-on-Sea, a little way north of where I collected the bike. Then I rode it 14 miles, basically from the car to Walton Pier, down to Clacton Pier, then back to the car.

It held up well. The HeadShok isn't right, but then I'm not sure I expected it to be. There are a few annoying ratles and clunks, but it was so windy I couldn't really tell where they were coming from. The shock hits it's stops to readily, so that needs attention fairly urgently. The rest of it? The brakes (V-brakes) are very grabby. On loose surfaces they lock the wheel easily, yet don't feel very 'confidence inspiring'. And the gears are mostly old Shimano 105. Shifters and chainset anyway. I think it's an old XT rear mech. It all works well enough though. Seat post wasn't stuck, and was well greased. Worst part? That was the position of the bars and shifters. The stem needs getting rid of for something with a little less rise and not so short. The shifters were just too high and canted back too much to be comfortable.

Cosmetically it's really quite good. Some decals have disappeared on the seat stays, but on the whole they're "all present and correct. It's also a "Made in the USA" Cannondale.

I'll take a better look at it tomorrow in daylight, and run the tape measure over it. Oh, and I'll start making a list of bits to buy.

Cost so far...

£53 = Bike purchase cost
£20-ish = fuel to drive to fetch the bike from Essex
£? = replacement cost of 2 x tyre levers
£nil = spare Conti Tour Ride tyres salvaged of an old bike
£nil = 2 of 700c x 28-38c inner tubes that had been hanging around in the garage forever anyway


Half-and-half - Original 28c tyre on the front looks too skinny on this bike. The rear has already been swapped for a spare Conti Tour ride Ihad kicking around at home.



Yay! The shop was open so I bought a couple of sticks of seaside rock. It'd have been rude not to, really.



End of the ride. In the end I swapped out both tyres because I thought it would look better. The front one was a right bh to get off though.

Edited by yellowjack on Saturday 24th February 22:13

Barchettaman

6,308 posts

132 months

Sunday 25th February 2018
quotequote all
Nice one! Sounds like a good maiden voyage!

There looks to be plenty of clearance above the tyre for a set of Mini-V brakes should you wish to go down that route, however I would keep the standard V brakes and Travel Agents, maybe back out the pads a bit so they don´t grab at the top of the lever travel.

Out of interest, I´ve just had a quick Google of the HeadShok system and it does look a fairly scary thing for the home mechanic to service/dick around with, specific tools are required, so maybe a job best left to a specialist.

yellowjack

Original Poster:

17,078 posts

166 months

Sunday 25th February 2018
quotequote all
Another ride today.

I promised myself I'd strip the wheels to re-grease the bearings this morning. The front one in particular sounds/feels terrible. I reckon it's completely dry. I also swore I'd see if flipping that hideous stem could make things more comfortable short-term. But it looks like it'd change the geo for the worse so I left it for now. I've got a couple of likely replacements on my ebay watch list already.

What I did do before riding it today was give the chain a squirt of GT85 and a rub down, before dribbling some wet lube onto the links. Then I remembered to check the chain for wear, and it's beyond help. So that's the first new parts sorted. An 8-speed 11-32t cassette and a chain to go with it. Then I'll cross my fingers and hope the chainrings aren't too bad.

So anyway, I took it out on my local army training area for a quick ride this morning... https://www.strava.com/activities/1425915771

Good fun, but the lovely sunshine had brought the world and his wife out to walk their dogs. It was hard to string a segment together without having to brake to avoid spooking the livestock! I managed to get an 8th place Strava 'trophy' on the most unlikely segment too. I had a chat with a couple of other riders and some of the random walkers out. The bike got two positive comments, and I got a compliment from an (albeit elderly) lady who was very kind and knocked 20 years off my age for me. I'd gone out looking to push myself and the bike to get an idea of how it compares with other bikes and me at my fittest.

Conclusions so far? It's a lot heavier than I expected. The hefty Continental Tour Ride 42c (I think) tyres have a lot to do with that. There's little else I can ditch to lose weight off the bike without starting to spend cash I don't have, so the next step is to strip the wheels 'naked' and weigh them against a couple of spare sets I already have in the garage. I'm hoping that the 8-speed cassette will go on a 10-speed hub OK by either adding or removing a spacer (I can never remember which). I'll use lighter wheels if I have them, along with ordering up some CX tyres which ought to be lighter than the massively over-built Conti Tour Rides I had going spare.

If I can lose a few hundred grams off the wheels I'll be happy. If I can lose anything near a kilo off them I'll be over the moon. I also have a feeling that the diameter of the seat tube means that I already have one from my old Merida to fit, and a saddle that's right for my backside. So tyres are (hopefully) the only part of the dieting that will cost money. I'll be happy if I can ditch the suspension seatpost without having to spend money on a replacement.

The other area to spend on will have to be the HeadShok™ suspension system. I'll need that servicing at the very least, and possibly the innards replacing. It can be done, apparently, but it needs the right parts, some unique tools, and someone who knows what they're doing. Oh, and a stem that's a better fit for me too. Again, that's unique to the HeadShok™ system - a 1.56 inch steerer, so a larger clamp size. Spacers and bearings might be harder to find as well. I'll have to get some saved searches on ebay and hoard spares when I can. But aside from that headset, everything else is pretty much standard parts from Shimano, albeit mixed and matched in a rather unusual combination!

Rear end is 8-speed, with a Deore XT derailleur. Front is a 105 triple chainset (52 tooth big ring), with an unmarked derailleur. Shifters are older 8-speed 105 (left hand one missing a cover cap). Brakes are V-brakes with a 'Travel Agent' system to allow them to work with the road levers. They are branded under the grime, but not a name I recognise right now. Wheels are a mis-matched pair. It looks like one of them has been replaced at some point, possibly both. Rear rim is in better condition than the front though.

Shopping list...

1. 8-speed cassette @ £17.98 (Shimano) http://www.wiggle.co.uk/shimano-cs-hg41-8-speed-ca... or @ £14.49 (Shimano) http://www.wiggle.co.uk/shimano-altus-hg31-8-speed... or @ £16.17 (SRAM) http://www.wiggle.co.uk/sram-pg850-8-speed-cassett...

2. 8-speed chain @ between £5.91 and £18.78 on Wiggle

3. 140mm x 25.4mm x 5° Headshok™ stem @ £19.99 on ebay

4. Some CX tyres, although I need to work out which ones are going to be suitable as all-rounders for me @ £??.??

5. Bar tape. Again, not sure which kind yet, but something with a little extra padding might be nice.

6. A Garmin mount of some kind.

I'm sure there will be lots of other tarty bling I'll want. Seat pack, water bottle cages, a bell, wheel reflectors, dork disc, etc, etc. I'm sure there'll be a few trips out to bike shops, and possibly some impulse purchases too. But for now I'm resolved to make as much use of spares and salvaged parts as I can to keep the cost of this bike as low as possible.

So far, so good...

biggrin

richardxjr

7,561 posts

210 months

Sunday 25th February 2018
quotequote all
Just single speed it and rag it to the pub YJ biggrin

gazza285

9,810 posts

208 months

Sunday 25th February 2018
quotequote all
Eight speed and ten speed cassettes use the same spline length, so no spacer required. Eight speed chains and cassettes are cheap and seem to last well, but you'll not find any cassettes with alloy spiders on anymore, just the individual pressed steel and plastic spacer type, so it'll be a good idea to avoid alloy freehubs, as the sprockets will dig in badly otherwise.

CoolHands

18,633 posts

195 months

Sunday 25th February 2018
quotequote all
Are you going to disassemble the headshok and service it?

yellowjack

Original Poster:

17,078 posts

166 months

Monday 26th February 2018
quotequote all
gazza285 said:
Eight speed and ten speed cassettes use the same spline length, so no spacer required. Eight speed chains and cassettes are cheap and seem to last well, but you'll not find any cassettes with alloy spiders on anymore, just the individual pressed steel and plastic spacer type, so it'll be a good idea to avoid alloy freehubs, as the sprockets will dig in badly otherwise.
Yes, I've been looking at 8-speed cassettes and chains just now. Should easily come in well under £30 for both.

Good point about the splines/spider interface too. I had to file the splines on one of the spare sets of wheels I have because a previous owner ran a steel cassette on alloy splines. Still, the wheels were free, and I have at least two sets, possibly three, hanging up in the garage. I'll be getting the steel rule out tomorrow to see if any are good for 11-speed cassettes, then I'll weigh 'em to see which ones will ditch the most weight.

I've been on Planet X tonight and ordered some cheap CX/Gravel tyres. "Panaracer Gravel King Mud Clincher" in black & tan and 700c x 33 mm flavour. They are, apparently, 'tubeless compatible', so if I'm feeling brave I might have a go at converting the wheels to tubeless if possible. They were £20 each. I also ordered some 3/4 bibs for £25 in one of their 'flash sales' so we'll see how they work out too.

Those tyres alone should get rid of 700 grams from the bike. If those freebie wheels are a few hundred grams lighter each, then the bike could feel a whole lot more lively for only £40 spent. All I'm worried about now is the current chainrings "not getting on" with a new chain. Do Shimano make an 8-speed Shadow + rear derailleur???

scratchchin


Edited by yellowjack on Monday 26th February 00:32

yellowjack

Original Poster:

17,078 posts

166 months

Monday 26th February 2018
quotequote all
richardxjr said:
Just single speed it and rag it to the pub YJ biggrin
NO!

tongue out

Sorry, but there are possibilities for a single speed conversion of one frame in the garage which has a damaged gear hanger tab. This 'Dale, however, is not getting butchered. It's too nice really.

After all the speculation about swapping bits of groupset in and out to try to make it 10-speed, I've decided to keep it like it is for now. The low gears, while not quite as low as my MTB, are low enough for my foreseeable needs, and it's running a high gear of 52 x 11 so I'm going to run out of legs before the bike runs out of gear inches!

The potential weight loss (as detailed in the post above) should be enough to make it easier to get rolling, and to keep it there too. If I destroy any wheels with my exploration of how far off road it can be pushed, then I'll probably try to get a good wheelbuilder to make a set for me with wider rims built to be robust, not light.

I can see at least a kilo coming off for relatively little spending, which ought to make a noticeable difference.

yellowjack

Original Poster:

17,078 posts

166 months

Monday 26th February 2018
quotequote all
CoolHands said:
Are you going to disassemble the headshok and service it?
If I can't find anyone else who's got a reputation for knowing how to do it, then I suppose I'll have to have a go myself. But at the moment I have no intention of stripping that bit of the bike. I've seen the photographs on the internet, and simple they aren't! eek

Parts might be an issue for the HeadShok™ steerer and suspension too. It looks like a case of buying up slightly less than ideal stem sizes as a temporary fix, and waiting for something better to come up on ebay. Either that or paying a fair bit extra and buying stuff from the USA, where there seems to be a healthier market for the HeadShok™ system.

richardxjr

7,561 posts

210 months

Monday 26th February 2018
quotequote all
You are quite bonkers biggrin Lose all the weight you like it'll still have terrible geometry. 140mm stem, Really? Your money.

No you can't get an 8 spd clutch mech but a single narrow wide chainring will work with 8spd and do much of the chain retention work and save half a kilo.

SS it, smash it to the pub, get big thighs.

yellowjack

Original Poster:

17,078 posts

166 months

Monday 26th February 2018
quotequote all
richardxjr said:
You are quite bonkers biggrin Lose all the weight you like it'll still have terrible geometry. 140mm stem, Really? Your money.

No you can't get an 8 spd clutch mech but a single narrow wide chainring will work with 8spd and do much of the chain retention work and save half a kilo.

SS it, smash it to the pub, get big thighs.
The 140mm stem? That's just the one that's currently on ebay in the UK. If I'm prepared to order from the USA I can get a choice of stem length and in some cases the rise angle. It's that unique clamp size that really restricts choice though, so a 140mm 5° rise might not be in any way ideal, but it'll be more comfortable than than stubby little pig of a thing that's on there at the moment, I'll wager!

It's definitely not going single speed though. And that wouldn't help with the geo anyway... wink

ps: Big thighs? Mucho overrated. Besides which I'd never get into my skinny jeans!

yellowjack

Original Poster:

17,078 posts

166 months

Saturday 3rd March 2018
quotequote all
Current updates?

There was a plan to fit new CX tyres. But the ones I bought from Planet X seem to be far too tight. There's a thread on that sorry saga here >>> https://www.pistonheads.com/gassing/topic.asp?h=0&...


Decisions made so far?

* I think I'm going to stick with the current shifters and the 8 x 3 drive train. It's running an old Shimano XT rear mech with an 11-32t cassette. It makes no sense to junk that set-up for the sake of bolting on my 2 x 10 Ultegra group. I'd be narrowing my gearing options for the vanity of fitting a 'posh' suite of components.

* The suspension seatpost must remain for now. It's a 26.2 mm post and all my spare or alternative posts are either 31.6 mm or stuck (literally) in another frame that my brother gave me.

* It needs a bell. I know! yikes I here you cry! But all my other bikes have bells, and four times in three rides I've found myself apologising for not having one. So it'll get a bell. Hopefully a kids style one with Dennis The Menace or something on it.

* Scour ebay for a second HeadShok™ fork. They're not exactly in plentiful supply so having a spare before I need one will help keep it on the road/trail. And work on finding someone who can service the damned thing, and tune it/set it up properly. The other alternative is to purchase a HeadShok™ to 1⅛ inch head tube adapter and switch to a more traditional fork. All this will cost though, and betray the budget nature of this attempted build. And after all, I did buy this bike because of the HeadShok™, not in spite of it.


LordHaveMurci

12,043 posts

169 months

Sunday 4th March 2018
quotequote all
yellowjack said:
Current updates?

* Scour ebay for a second HeadShok™ fork. They're not exactly in plentiful supply so having a spare before I need one will help keep it on the road/trail. And work on finding someone who can service the damned thing, and tune it/set it up properly. The other alternative is to purchase a HeadShok™ to 1? inch head tube adapter and switch to a more traditional fork. All this will cost though, and betray the budget nature of this attempted build. And after all, I did buy this bike because of the HeadShok™, not in spite of it.
Have PM'd you.

Barchettaman

6,308 posts

132 months

Sunday 4th March 2018
quotequote all
There seem to be stems available from this German seller:

http://www.cannondale-parts.de/Headshok-stem

It looks like these guys will sell you the specific tools to service the fork:

https://qwertycycles.co.uk

As always, the guys on Retrobike are worth a shout:

http://www.retrobike.co.uk/forum/viewtopic.php?t=1...

Apologies if you were aware of all those sites. Also YouTube has plenty of stripdown videos for the fork.


It does look a really fun project. I do fear however that if you get too obsessed with trying to shed weight from the bike things might get very expensive very quickly, in fact, keeping the costs down is going to be your biggest challenge.

One last thing - buy a 9-speed chain for the 8-speed drivetrain when you renew it, they run better and the 9-speed chain my be even cheaper.

yellowjack

Original Poster:

17,078 posts

166 months

Monday 5th March 2018
quotequote all
LordHaveMurci said:
Have PM'd you.
I'll reply when i can get into my emails. Struggling to log in at the moment. irked