18 replies to this topic

[birdy]

This looks pretty high tech. Has anyone got a pair of the Glycerin 8?


birdy

[Rafferty]

birdy, on Jan 6 2010, 12:18 PM, said:

This looks pretty high tech. Has anyone got a pair of the Glycerin 8?


birdy

My son will be returning from the USA in two weeks with a cupla pair of these for his mum (US$130 a pair).

Hopefully they live up to the hype.

[sarz]

Glycerin 8 is available now in 2 colourways with the new DNA cushioning, and 2 more colours will be released soon.

DNA is a new adaptable heel and forefoot cushioning system to provide optimum shock absorption and energy return for each individual runners needs.


Run happy!

[Rafferty]

She likes 'em.

Done about 50 klm's in new pairs of 7's and 8's - the cushioning in the 8's significantly better.

[WetWeek]

Bought some new Brooks recently and had a brief trot on the shop's treadmill in the Glycerin 8's. They felt brilliant - albeit firmer than I anticipated. I expected them to feel squishy, but they gave a positive feel underfoot. I got talked into Defyance 3s instead, and in comparison the Defyances are really squishy underfoot. Don't know if that was just the DNA's response to my gait, though?

[scoop1962]

Trying a pair of 8's to help with calf woes.

Did 11k on sunday and no probs....very stable shoe and as someone mentioned firm not squishy when running.

Will update after a few more runs

[Gadfly]

I love the DNA!

I tried a pair of the new Glycerin and loved the feel of them (ran in them for 2 weeks)....and the faster you run, the better they feel. Only problem was that they were letting my left foot pronate too much. So, I'm back in the Inifiniti.....but waiting for the DNA to be in the other models.....hopefully soon. Love it!

Edited by Gadfly, 24 February 2010 - 08:09 AM.

[WetWeek]

Gadfly, on Feb 24 2010, 09:09 AM, said:

I love the DNA!
So, I'm back in the Inifiniti.....but waiting for the DNA to be in the other models.....hopefully soon. Love it!

LOL! Me too. I have my eye on a pair of Infiniti - hopefully with DNA for next year. You listening, Sarz....?

Steven

[sarz]

Yeah...I'm listening!!

It's not next season...but hopefully not too far away!

Run happy!

[vat]

WetWeek, on Mar 12 2010, 08:08 PM, said:

LOL! Me too. I have my eye on a pair of Infiniti - hopefully with DNA for next year. You listening, Sarz....?

Steven

Top shoe - on my second pair and it's my pick for what little road running I do nowadays.

[peterb]

I just bought some new Glycerin 8's and went out on my first run yesterday morning. Shoes felt great but after about 6km my calves were aching like they haven't done for 3-4 weeks and still hurt like hell this morning. I was previously wearing some old Trance 5's so I'm hoping it's just the change to some new shoes and some advanced technology that are finding some new muscles - otherwise I'm going to be extremely unimpressed.

[MongrelRex]

I have got the Glycerin 8s, fitted with orthotics. I find that they are a firm shoe. But I also find that the orthotics spoil an otherwise supberb shoe making them too heavy, but I tend to roll in without them (not overpronation, another biomechanical issue).

Can someone tell me what the difference between non-Newtonian material and normal shoe material is?

Rex.

Edited by MongrelRex, 29 March 2010 - 10:09 AM.

[cjr]

Good to see that the clever marketing people at Brooks are earning their keep...

[WetWeek]

MongrelRex, on Mar 29 2010, 09:27 AM, said:

Can someone tell me what the difference between non-Newtonian material and normal shoe material is?

Rex.

Hi Rex

There's an interesting video on the DNA material on the Brooks US website. My year 12 physics/science-loving daughter tells me the non-Newtonian thing is real. She even showed me using a cornflour mixture! By my limited comprehension, I understand the premise is that the higher the impact the greater (up to a point) the resistance. That is, at very low impact, it acts as a fluid, but at higher impact as a solid (albeit soft one).

The video explains it much better than I can

Edit. found it: http://www.brooksrunning.com/Videos/Brooks...Cushioning/1331

Steven

(Maiow)

Edited by WetWeek, 29 March 2010 - 05:11 PM.

[MongrelRex]

Interesting video thanks Steven. This stuff looks like the goop our nanny makes for our kids sometimes!

I can understand why a heavier runner would require a firmer ride than a lighter runner -- and presumably the DNA compound would adapt to that. But the inverse to that is that a heavy foot striker may need more impact absorbtion than a light foot striker. How can it do both?

Edit: I am wondering whether this is also why in the shop when I was fresh and my gait relaxed and springy the shoes felt wonderfully cushioned, but after 10 km when I am beginning to get fatigued and hitting the ground harder, the shoes felt less forgiving. Perhaps that was in my imagination.

I am sure the Brooks chemical engineers have thought of this. However, it does lead me to think that it may be best to wait until the second generation of the compound.

It is a bit like never buying version x.0 of software -- always wait until the first update when they fix most of the bugs in the initial release.

Rex.

Edited by MongrelRex, 29 March 2010 - 09:37 PM.

[Rafferty]

A quick update re Mrs Raff's experiences with Glycerine 8's and DNA.

Currently wearing 3 pairs of shoes in her weekly (50klm to 70klm) cycle - Glycerine 8's, Glycerine 7's and Nike Vomero 4's, all pairs about the same age.

At the beginning she noted the G8's to be much firmer than anticipated, and still favoured the softer ride of the Nikes. Approx 200 klm's later she is now struggling to even look at the Nikes as the G8's are now giving a much superior and cushioned ride. Her current order of shoe preference - G8's, Nike Vomero 4, G7's.

Is anybody else out there noticing a better feel for the G8's after a substantial run-in period?

Edited by Rafferty, 14 April 2010 - 08:02 PM.

[Gadfly]

I'm back in the Glycerin 8's instead of the Infiniti as I was finding the impact on my forefoot too much in the infiniti.

Yes, I still technically pronate a little too much in the Glycerin 8, but the feel and less impact on the forefoot far outweighs that. Interestingly, according to the guys that I'm training with - my running is much smoother and much better form in the Glycerin 8, so obviously what I do at slower speed trying them out....is different to the on road test. I'm very lucky to be able to do this - helps when you train with the guys who run a running shop!!

I can't say I've noticed a difference as they settle in - comfy from the word go!

[peterb]

I've now ben running in my Glycerin 8's for 3 weeks. First week was terrible - bad calf pain. Went on to a more measured breaking in plan and 2 weeks later all is beautiful. Much firmer and better then my old Trance 5's. Ran 12 km last sunday (new PB) and no calf pain at all.

[WoronoraApeMan]

I am finding that the DNA in my adrenaline's is a tad too soft. i have been in brooks for 4 years and how after my long runs when i walk barefooted my heals hurt!