[Closed] Eccentric BBs for standard shells - anyone used one of these?

I have a Trickstuff (and the other one who's name escapes me).

Used it to SS a geared steel frame I had. Did what it said on the tin, didn't slip. There's not a lot of chain slack takign up so I needed to adjust the rear cog size to get a decent chain tension. Bearings are ok, replaceable and seals come off for cleanign too.

I ran mine at 2pm to get best chain tension so can't comment on the effect on BB drop etc.

[ad] if you do decide you want one DM me - I've sold the frame now and it's sat in my 'I must sell that sometime' box [/ad]

I’d certainly notice £170 a hell of a lot more than 10mm.

I’d certainly notice £170 a hell of a lot more than 10mm.

Haha! Yeah... but if a job's worth doing it's worth doing well etc.

wwaswas, will think about it, this is definitely a long term pipedream bike but maybe buying the most obscure part first will make the rest a reality!

Actually now I think about it I should probably check how much vertical adjustment you can actually achieve...

Yeah… but if a job’s worth doing it’s worth doing well etc.

Oh… custom frame, then 🙂

JUST LET ME BUY THE OVER-COMPLICATED BB GODDAMIT! 😉

Looks like £170 (or whatever wwaswas is selling for) only buys you 7mm vertical adjustment, according to my shady CAD drawing anyway, makes the price look twice as extravagant...

I’d say, why don’t you add that £170 to the budget for your frame? Then you might be able to find something more suitable for your needs, rather than bodging. Just a thought . .

I've got one!

Not used for about 4 years and had it on my bike for about 12 months. Bearings are smooth, but one of the plastic top caps is damaged.

If you are interested drop me a DM. Based in Bristol if you want to see it.

£55 posted if you want it.

turns out you can get these for bmx bbs too i have an old sunn bmix i`d like to drop the bb on and this seems ideal!

I've got a Philcentric on my SS 26er. Never touch it, works lovely bearings are lasting and lasting.

Can't remember whether I tensioned it upwise or downwise, but I'm happy with the way the bike rides.

I wouldn't bother getting one for a geared bike before I'd ridden it. It might be absolutely fine.

£55 posted if you want it.

I might be interested if the OP isn’t… I’ll have a think.

I still don't get how you can't do disc brakes Ian!

I’d say, why don’t you add that £170 to the budget for your frame?

Because it wouldn't be enough 🙂

This is my eternal quest for a lightweight gravel frame that takes rim brakes. Steel/touring frames exist but are either heavy or expensive, and Ti exists but is expensive. Custom is even more expensive and some builders now won't do canti mounts anyway.

The Kinesis appears to be the same weight as the nearest Ti equivalent (Van Nich Amazon) and £600 without expensive eccentric BBs, even with the eccentric it's still cheaper by a long way. Takes 40c tyres with guards (apparently) and can double up as the CX bike in the winter.

Anyway, I think the adaptor is becoming a moot point, am waiting for SJS to respond to my question, but it doesn't seem worthwhile if I'm only getting a few mm adjustment.

Edit:

I still don’t get how you can’t do disc brakes Ian!

See the dozens of other threads on the subject I've started/contributed to Al! Just don't see the point considering how happy I am with the rim brakes on my winter singlespeed, adding discs into the equation just adds cost, weight and the very probable possibility of horrible squealing in the wet which no amount of fiddling or new pads/rotors seems to rid me of. I don't ride in such a way on road or on gravel that I need the instant gobs of power that discs offer.

isn't the 7mm the overall movement, so it (in comparison to a standard bb) only lowers you 3.5mm (another page claims 3mm) at most? complete waste of cash in this instance!

is there an actual reason you want a lower bb? handling doesn't really apply in the same way to road bikes as to mtbs..

if you really want one, they're £100 here https://www.bikester.co.uk/trckstuff-exzentriker-bottom-bracket-for-bsa-68-73-mm-black-477372.html?gclid=Cj0KCQiAj4biBRC-ARIsAA4WaFj723idYhXRHufO4bkNLITBf9fPYhs-vbYvskvp2GGxQOYGgn6mWFMaAvunEALw_wcB&_cid=21_1_-1_9_250_477372_201642850999_pla&ef_id=WlS2oAAAAMoluDjF:20190118103454:s

I just measured centre-centre of circles, so the centre of the axle would be 7mm lower than the centre of the BB shell (the way I've drawn it anyway).

I always thought lower BB = better handling on corners due to lower centre of gravity etc?

Also a lower BB = more stack height for a given handlebar height, and I like lots of stack but don't like piles of spacers!

Ooops, google just brought up about a dozen similar discussions including one on here only a month ago! Sorry folks, I should always search first...

See the dozens of other threads on the subject I’ve started/contributed to Al!

I am aware 🙂 I understand your position, it's just odd that you've had such bad experiences when many of us haven't.

Aren't there heaps of SH superlight canti cx frames about?

Anyways I am no expert but 7mm lowering to your CoG when it's ~1m above the road, I doubt you'd notice it.

it’s just odd that you’ve had such bad experiences when many of us haven’t

Mm; for me one of the benefits of discs is that they never squeal (never have in nearly 20 years of using them), whereas cantis almost always squeal like pigs, either in some conditions on just about any bike or always and forever on certain forks.

The ceramic rims/V brakes combo on my Lava Dome is terrifying, it's like riding an air raid siren.

ne of the benefits of discs is that they never squeal

To save hijacking my own thread, see the recent 'road bike disc brakes squealing thread'. I'm not the only one who experiences squealing disc brakes in wet conditions, although obviously I'm one of the few who finds it offensive enough to go back to rim brakes.

FWIW posh TRP Mini Vs on cheap aluminium rims with posh Swisstop pads work fine in all conditions, only squeal (and nowhere near as badly as cold wet disc brakes) when the pads wear enough that they need toe-d in again.

I gave up on actual cantis fairly quickly though...