not sure if i'm posting this in quite the right spot but here goes

anyone ever heard of durahelm, nowt comes up if i google them?!

i started looking for a new helmet & something popped up looking very sort of kask protone

when questioned i got assured they're certified meeting EN 1078 (Europe/UK) standard & made in italy by durahelm

currently working on basis bogus & not safe

anyone any experience ?

just to relate my experience - BUYER BEWARE

i'll begin by saying that as a short 5ft 7in / 1.7m tall bloke & light weighing approx 10st 7lbs / 66kg (wringng wet) with normal length legs i :

    *     can just stand over the frames of my 2 x mtb's without squashing my dangly bits against the top tube
    *     ride 165mm crank arms (have to!)

across those two mtb's i have seatposts that are :

    *     30.9 (whyte)
    *     31.6 (ritchey)

both of which comfortably allow height adjustment well within safety limits / minimum required insertion points in seat tube as specified by manufacturer

i recently purchased two "zoom suspension" seatposts ie. pic enclosed is of the 31.6 widely available @ aliex

at no point was a minimum insertion length in the seat tube indicated

when they arrived @ 350mm they looked very much shorter than both my existing ritchey & whyte seatposts but in most of what i'd read pre-purchase are deemed very long

ignoring any potential issue with sag from just sitting on the suspension seatpost, ie. setting things with same height / fore&aft / angle settings as current i am massively disappointed that in order to use either zoom seatpost then i'd have to :

    *     find atleast 20mm to reach minimum insertion point in seat tube
    *     chop length of my legs
    *     stop wearing padded shorts
    *     ride bare foot
    *     buy saddles with greater stack height
    *     ride crank arms over 185mm!

i conclude they are hopeless for anyone :

    *     over a maximum of 5ft 5in
    *     doesn't have a ridiculously high seat tube

am therefore back to square one looking to find a version of suspension seatpost that is considerably longer than 350mm with better minimum insertion point

i bought the zrace flavoured version for my two mtbs

after being disappointed with the difference in feel and lever travel between all four brakes i looked to bleed & degas them

carefully removing the bleed screws from the levers i found that not one of the o-rings was intact (split or in one case only 3/4 of an o-ring)

am working on the basis it is down to poor machining of the threads as it did the same to the o-rings on my bleed kit

time to stock up with loads of spare o-rings

still think they should have proper caliper bleed nipples not just bleed screws and it is a shame that bleed nipples from hope tech or shimano simply don't fit, different sizes & threads!

ok, so i thought i'd give a little update on how things have gone with the zrace m1 x2 i purchased for my two mtb's and see if anyone else's experiences matches mine?!

you can adjust reach but not lever travel

with 4 brakes with very different levels of lever travel and uneven braking 'tis time to bleed & de-gas whole systems to try and balance things out

firstly shimano red mineral oil smells like fish guts!

for each 5m bleed screw @ levers discover all o-rings are already wrecked, bits even missing, due to poor machining of thread @ manufacture and it did exactly the same to the o-ring on my bleed equipment

is it even possible to buy just o-rings for 5m bleed screws and i suppose same question applies to the 4m o-rings for caliper bleed scews?

will be really interested to learn, when it comes to the 4m bleed screws @ caliper, has anyone replaced theirs with decent bleed nipples and if so what did you use?

thanks

i've seen several different shots of both 2 piston and 4 piston brake calipers where :

    *     brake bleed nipple
    *     banjo hose connector

are interchanged (as shown here on hope x2)

are both configurations ok, does either provide any performance or functional difference?

ps. i reached out to hope tech but the clock is still ticking...

hi Ludo

are you using them with the kind of matchmaker clamps avid/sram use - it looks as tho they shud work?

cheers
Terry

is anyone actually using either the 2 or 4 piston version of the zrace m1?

any technical comments and where did you source them?

they look to me to be the same as the iiipro e2 or e4 just with different branding

i got so fed up with trying to get aliexpress or alibaba to function but found the zrace listed on dhgate

managed to create an id on dhgate, ordered & paid no problem for zrace

then notice order has a flag suggesting out of stock

queried seller who now just states listing is removed and won't ship as too heavy (at 1.1kg for package) and as yet no refund

what jokers?!