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HOBSON Easyseat II

Discussion in 'Adaptive and Disabled Cycling' started by stearman65, 15 Aug 2016.

  1. stearman65

    stearman65 Well-Known Member

    As some of you who follow my posts know I bought a used Pashley TR1 folding trike last week. It came with a HOBSON Easyseat II seat, the previous owner said the user had autism & it had been recommended by a specialist. He also said it cost £140, which I've since learned they are available at almost a third of that. Anyway, I've taken that on the chin, I read up on what I could find about setting up the seat & on our first foray into the local park, gave it a try. The sensation was totally alien to other bike seats I've used, so my wife had a try & although I hadn't adjusted the height for her, (she's 6 inches shorter than me) she did think it felt right.
    My specific queries are, has anyone bought one of these, how did you get on with it, do you still use it?
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    Attached Files:

  2. TheDoctor

    TheDoctor Man-Machine

    Location:
    Hertfordshire
    A specific saddle for autism? Niche market...
    Anyway, saddles are somewhat personal. I do know these things have been around for over a decade, and don't seem to have taken the world by storm as yet.
     
  3. stearman65

    stearman65 Well-Known Member

    It isn't specifically for Autism, it's for anyone who can't get on with a conventional saddle, it was the seller who said that was why he bought it for his son who has Autism & some expert said he should get one. Did a search on all forums here not a peep.
     
  4. Yellow Saddle

    Yellow Saddle Veteran

    Location:
    Loch side.
    We did not arrive at conventional saddle design by accident. Over the years plenty of bench-style saddles with slots like the one pictured have seen the light and died a deserved death. Conventional bicycle saddles support your body weight on the ischial tuberosity (sit bone) whereas conventional seating such as chairs and horse saddles, support your body weight on the sit bones and gluteus maximus. In the latter configuration you cannot generate power to pedal because the primary muscle that does that is now being constricted by supporting you. A bicycle saddle separates the two gluteus muscles and leaves them free to do their work. Recumbent bicycle chairs compromise by supporting weight at the back of the pelvis - essentially slouching in the chair.

    Therefore these chair saddles will feel comfortable when just sitting but will not allow you to pedal properly. If you're just toodling off to bingo around the corner, then they're OK. The fact that the ones in the picture are supposedly tested to 300lbs should tell you something.
     
    summerdays and stearman65 like this.
  5. stearman65

    stearman65 Well-Known Member

  6. Yellow Saddle

    Yellow Saddle Veteran

    Location:
    Loch side.
    Attaboy! That's where it belongs, on eBay. If ever you find any cyclist using one of them for rides longer than 100 meters, let me know and I'll print what I've written above and eat my words.

    I hope your eBay adverts mentions that the saddle was stress tested to 300lbs and that you made a big hooh-hah about the synchronized width adjustment feature.
     
    stearman65 likes this.
  7. Nibor

    Nibor Über Member

    Location:
    Accrington
    Why should the saddle being rated to 300 pounds tell you something pray tell ?
    Do you have issues with riders of such weight?
     
  8. Yellow Saddle

    Yellow Saddle Veteran

    Location:
    Loch side.
    Whoa! Hold your horses cowboy!

    Who said the saddle is rated to 300 pounds? It is "Stress tested to 300 pounds."

    Most bicycle items will easy take 300 pounds of weight. I'll work in kgs, because that's what I understand better and it can be related to g-forces better with a near 10/1 relationship. 300 pounds is 136kgs. If the saddle/seat in question was stress tested to 136kgs it isn't very strong and they don't have much faith in it. Most of us, hitting a ridge in the road or dropping off a kerb will easy subject the non-suspended parts of a bike to 4gs. A quick calculation would show you that 136kgs in stress test mode (i.e. expressed as weight @ G forces) is only 34kg at 4g. In other words, the saddle stress tested at 300 pounds is actually only strong enough 9(or was tested to) a person of 34kgs sitting on the saddle, dropping off a kerb.

    That tells me a lot. It tells me that the manufacturers don't know what they're talking about. It tells me that they perhaps did know what they talked about and wanted to hide the weakness in the product or, it tells me that it is all BS.

    Most of us dropping off a kerb would not sit on the saddle but suspend ourselves on our legs. However, the wheels are not suspended and they would experience the full force of the drop. An average-weight person of say 70kgs would easily "load" a wheel at 400kgs when dropping off a kerb. Wheels take this in their stride. A person sitting on a trike hitting a bump or dropping off a kerb would not be able to suspend because of the bike's configuration. The saddle would take the full brunt of the force. A "stress-tested-to-300lbs" saddle would not cut the grade.

    The point of my original post was to a) point out why a butt-dividing saddle works better on a bicycle and b) to ridicule the ridiculous brochure and its set of claims - just for laughs, if you like. I could have gone further and laughed at the #1 Bestseller claim (really really funny BS) or I could have puzzled over point four and three kinda contradicting each other. Instead I focused on my area of expertise - basic physics.

    Take a deep breath, go for a ride and have a beer.
     
    Nibor likes this.
  9. Nibor

    Nibor Über Member

    Location:
    Accrington
    I was just baiting you and you dealt with me like I was an angry midge chapeau my friend.
     
  10. Yellow Saddle

    Yellow Saddle Veteran

    Location:
    Loch side.
    I would have thought baiting was against the rules here. Further, your "pray tell" request is a clear invitation for an explanation. Go ride and have a beer. Since it is Wednesday, it is IPA day.
     
  11. Nibor

    Nibor Über Member

    Location:
    Accrington
    I was trying to accept your thorough and detailed explanation with dignity. I will be riding later once I have finished work and will not be partaking in beer today as I am trying to remove some of the 300 Lbs lol :okay:
     
  12. Yellow Saddle

    Yellow Saddle Veteran

    Location:
    Loch side.
    Just remember. It is Wednesday. IPA day.
     
  13. stearman65

    stearman65 Well-Known Member

    New saddle for the trike just arrived, quite impressed at the appearance, will fit it after lunch & give it a try going to the local Spar.
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  14. Nibor

    Nibor Über Member

    Location:
    Accrington
    IPA day what is this?
     
  15. stearman65

    stearman65 Well-Known Member