Viewing 40 posts - 1 through 40 (of 84 total)
  • The Grim Donut finally tested!
  • Premier Icon eddiebaby
    Full Member

    Well worth 20 minutes of your time as the guys from PB put a massive change from current geometry on the hillside. No spoilers from me.

    Premier Icon Rubber_Buccaneer
    Full Member

    Saw that yesterday, not disappointed after the long wait for the video.

    Premier Icon Pyro
    Full Member

    Watched it last night – ace!

    Premier Icon the00
    Free Member

    Shame this was done by an online publishing team rather than a multi-million pound bike company, but fair play to them, and also the factory that made it.

    Premier Icon eddiebaby
    Full Member

    Just the right amount of stupid! 🙂

    Premier Icon hooli
    Free Member

    I like that saying “we’ve stumbled across the right amount of stupid”.

    Premier Icon eddiebaby
    Full Member

    Snap!

    Premier Icon DickBarton
    Full Member

    It is an interesting idea but the shape just looks all wrong – how that frame hasn’t snapped at headtube is impressive…it just looks all wrong. The fork is almost angled so the traditional seals and bushings aren’t going to run smoothly as they aren’t really going up and down but sliding at a forced angled.

    I’ve not seen the video yet but will watch it – the above is just my uneducated thinking – especially watching the amount of flex produced in the slow-mo bottoming out videos of suspension bikes.

    An interesting idea, but looks like it will fail dramatically. Hopefully the video proves my thinking completely wrong!

    Premier Icon howsyourdad1
    Full Member

    It’s brilliant, highly entertaining and i really like Mike L, a bike nerd who see’s the funny side of being a bike nerd

    edit: quick someone copy Dick’s comment before he watches the video

    Premier Icon matt_outandabout
    Full Member

    Who else wants a bottle ‘oldeer now?

    Premier Icon monkeyboyjc
    Full Member

    It is an interesting idea but the shape just looks all wrong

    Would you have said the same thing ten years ago about today’s bikes? I would have….which is kinda the point of the experiment.

    Premier Icon brant
    Full Member

    It is an interesting idea but the shape just looks all wrong – how that frame hasn’t snapped at headtube is impressive…it just looks all wrong. The fork is almost angled so the traditional seals and bushings aren’t going to run smoothly as they aren’t really going up and down but sliding at a forced angled.

    I’ve not seen the video yet but will watch it – the above is just my uneducated thinking – especially watching the amount of flex produced in the slow-mo bottoming out videos of suspension bikes.

    An interesting idea, but looks like it will fail dramatically. Hopefully the video proves my thinking completely wrong!

    Certainly one of the most STW posts ever.

    Premier Icon brant
    Full Member

    Singletrack have previous in this area of course – they made their own bike years before this.

    Happy Pasty

    Build It And You Will Ride – Chipps goes on a framebuilding course

    Premier Icon bearGrease
    Free Member

    Bollocks to the bike, I want the mini at the start!

    Premier Icon duncancallum
    Full Member

    Interesting vid, wonder on the side loading on the fork bushes…

    I wonder if dropping the head tube height to help pick up the bb height slightly would help

    Premier Icon kayak23
    Full Member

    It’s very good at one thing seemingly.. As Yoaan says, you wouldn’t want it as your everything bike (or words to that effect)

    Everything is a compromise for a bike that performs well everywhere. They could just as easily make a frame that excels at climbing,but is rubbish downhill….maybe.

    Premier Icon swavis
    Full Member

    Cool experiment and I’m glad they did it. It’ll be interesting to see what we are actually riding in 2030.

    Premier Icon mos
    Full Member

    The guy testing it reminded me of the scuba instructor from Along came Polly.

    Premier Icon Rubber_Buccaneer
    Full Member

    An interesting idea, but looks like it will fail dramatically. Hopefully the video proves my thinking completely wrong!

    Are you so sceptical of bridges, aeroplane wings not snapping and the existence of helicopters?

    Grim Donut huck to flat about 3 mins in.

    Premier Icon sanername
    Full Member

    I feel like the Trust fork might actually come into its own with a bike like that.

    Premier Icon eddiebaby
    Full Member

    Levy does like his Trust fork. Hmmm.

    Premier Icon nickc
    Full Member

    I could be wrong but I think the Grim has already had a Trust on it, just for extra Ugly.

    It’s really entertaining, I don’t think for a minute they actually thought it would be any good, and YB’s comments were super interesting. Also I shall be referring to it as a bottle older from now on.

    Premier Icon tomhoward
    Full Member

    I could be wrong but I think the Grim has already had a Trust on it, just for extra Ugly.

    Only in photoshop IIRC

    Premier Icon orangespyderman
    Full Member

    I enjoyed Yoann’s laugh when he saw his time – genuinely contagious, I found 🙂

    Premier Icon chrismac
    Full Member

    Very entertaining and I’m amazed it worked as well as it did. Some of the comment from both mike and yoaan are brilliant

    Premier Icon DickBarton
    Full Member

    Nope, I trust the engineers that have spent the time learning and working out the right stuff…but as this has been done without all that (from what I can see from the various videos and articles on it), then I’m more sceptical.

    Side loading was the terms I was after not the up and down bit.

    Video looks good…does support Chris Porter’s chat about longer bikes being faster as well, that bike seemed to make a decent dent in the ‘standard’ bike time on that run they filmed.

    As I said, it doesn’t make sense to me, but I’m not trained or skilled in this area (I have enough problem trying to get my leg over the bike!), so happy to see it being ridden and used, but the front end does look like it’ll be ripped off without much impact!

    Premier Icon hols2
    Free Member

    Premier Icon honourablegeorge
    Free Member

    Noticed Chris Porter’s name in the credits too…. he actually did this for real (albeit bit more seriously) five years ago.

    Premier Icon dc1988
    Free Member

    The issue with too much side loading isn’t going to be an issue all the time, how often do you huck to flat. Surely the head angle will mean the fork can compress backwards more and “get out the way” of oncoming obstacles, kind of like the theory behind high pivot points for rear suspension

    Premier Icon nickc
    Full Member

    Only in photoshop IIRC

    Makes sense, there has to limits after all…

    Premier Icon chiefgrooveguru
    Free Member

    I knew it would probably work well!

    I’ve made a business from ignoring convention and pushing the boundaries with audio products. People are just so stuck in their ways!

    Regarding the forces on the fork, we ride our bikes forwards so impacts are rearwards most of the time – that’s why high pivot rear suspension works so well. With that 57 deg head angle you’ll have 20% more leverage on a huck to flat than with 63 deg HA. Is 20% a big deal?

    Look what Paul Aston has built after 15 years of pushing the boundaries with non DH bikes:

    https://m.vitalmtb.com/features/Ultra-Long-210mm-Travel-Enduro-Machine-Is-This-the-Ultimate-MTB,2947

    Premier Icon richmtb
    Full Member

    57 Degrees!!

    That was a fun video. Its a really cool idea.

    If they dial back the stupid just a touch they might really be onto something.

    Ultimately though, you really need to be a good rider benefit from that style of bike.

    I’m on a LLS trail bike with a 65 degree HA and I keep having to remind myself to get my weight more forward.

    If I rode the Grim Donut I’d be spat out the side on the first corner.

    Premier Icon john_l
    Free Member

    That’s a highly entertaining video, Mike Levy’s enthusiasm is properly infectious – don’t think I’ve ever spent 20 mins watching a review of a bike I’ve no interest in owning!

    Premier Icon reluctantjumper
    Full Member

    Been waiting for this video for a while, love ridiculous projects like this!

    Bollocks to the bike, I want the mini at the start!

    I mentioned to Levy in the PB comments about how ridiculous that bike would look carried by the Mini and we got into a conversation about how it wouldn’t fit on his rear mounted rack. Ended up talking about Mini’s for a bit and about how strap-on racks can separate the roof from the rest of the car, he spotted the tell-tale signs of that on his car and now he has a seasucker as in the vid!

    My little claim to fame.

    Premier Icon Nobeerinthefridge
    Free Member

    It is an interesting idea but the shape just looks all wrong – how that frame hasn’t snapped at headtube is impressive

    It certainly doesn’t look conventional! But in terms of the headtube, not really, you have to consider which way the forces are acting, unless you slowly hit a huge huck to flat, then it’ll be fine.

    Premier Icon andylc
    Free Member

    Genius. Loved both of those videos.

    Premier Icon chiefgrooveguru
    Free Member

    “I’m on a LLS trail bike with a 65 degree HA and I keep having to remind myself to get my weight more forward.”

    You wouldn’t if your bike had longer chainstays!

    Premier Icon chiefgrooveguru
    Free Member

    “unless you slowly hit a huge huck to flat, then it’ll be fine.”

    As I said above, 20% more leverage than with a 63 deg head angle. It’ll fine full-stop.

    Premier Icon timmys
    Full Member

    Crumbs. Never occurred to me it was possible for the chain to slap the ground on landing.

    Premier Icon julians
    Full Member

    The grim tagnut?

Viewing 40 posts - 1 through 40 (of 84 total)

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