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  1. #1
    EZ-1 SX to ebike Project
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    req: Recumbant Weight limit upgrade Sun EZ1

    I am learning perhaps too late that I may need more bike than the SUN EZ-1 is off the showroom floor.
    Any one know of any structural modifications that would strengthen the frame in preps of the near 350 lb load of me(280 / 125kg) , motor, batteries and equipment? I know a few good welders, I just want to know where the gusset tabs or box tubes would be added.

    I have heard of the AEROSPOKES and think those would be good for my rear wheel if I'm able to get the front hub motor.

  2. #2
    The Site Administrator: Currently at home recovering from a couple of strokes,please contact my assistnt admins for forum issues Tom Stormcrowe's Avatar
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    Why? It's rated by the lawyers at 350# for the frame.....and that's likely about 2/3 of what the engineers would rate it for. The issue would be more likely to be a rear wheel rather than the frame. You aren't really going to be taking that recumbent in any conditions that would create THAT much stress, you know, it's a pavement ride, and being a recumbent, you aren't going to be bunny hopping curbs or taking jumps.

    tom daniels here in Clyde's will hopefuly chime in here about his Sun and the rear wheel he had built for it. A Rhynolyte, if I remember correctly....
    on light duty due to illness; please contact my assistants for forum issues. They are Siu Blue Wind, or CbadRider or the other 3 star folk. I am currently at home recovering from a couple of strokes. I am making good progress, happily.


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  3. #3
    Clydeasaurus tomdaniels's Avatar
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    Chime in I will. I don't have a Sun, but a Rans Stratus rather. My stratus is rated to 275 or 300 and I am 350. It's a great bike and carries me pretty well.
    If the Sun EZ-1 is rated for 350, I would not be afraid of it taking 450. Don't sweat the frame! And other things like bottom brackets that clyde upright riders might be hard on, are not such a big deal on recumbents as we never stand on them. Get a good LBS to build that rear wheel!

    As far as wheels go, I had a Sun Mammoth 36 Hole rim built up with DT Swiss spokes and I have their tension checked regularly. Unfortunately, that rim is is no longer being made. Wish I had bought 2 rims! My LBS suggested a Salsa Gordo (available in 40 and 48 hole models.) This will probably be my next rim unless I buy a trike. The rhynolite is a great wheel as well, but seems to top out at 36 Hole. Either are great wheels
    Last edited by tomdaniels; 06-13-08 at 09:00 AM.
    2007 TerraTrike Cruiser (XL) Trike
    2004 Rans Stratus XL LWB Recumbent
    1999 Trek Navigator 200 21"

  4. #4
    EZ-1 SX to ebike Project
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    Quote Originally Posted by tomdaniels View Post
    Get a good LBS to build that rear wheel!

    As far as wheels go, My LBS suggested a Salsa Gordo (available in 40 and 48 hole models.) This will probably be my next rim unless I buy a trike.


    Not familar with the lingo... what is "LBS" in this context?

  5. #5
    Senior Member theetruscan's Avatar
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    Quote Originally Posted by chesspupil View Post
    Not familar with the lingo... what is "LBS" in this context?
    Local Bike shop

  6. #6
    Clydeasaurus tomdaniels's Avatar
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    LBS == Local Bike Shop.

    Talk to the mechanic who builds wheels at the LBS (or several). Explain your concerns -- notably, Big, heavy, strong, bombproof wheel without breaking the bank. Note: mention this is for a recumbent so they know it will be a mountain bike spacing.

    Get a quote. You might ask them for what rim they would recommend on your recumbent after explaining your concerns. If it's not one of the above, you might ask for their reasoning. This often tells you something about their skills and knowledge.
    I have three excellent LBSs in 25 miles--2 in Ames, 1 in Ogden. I try to support each of them, but usually for different things. One does my recumbent specific stuff, one does my wheel stuff, and another does tuneups and works on my daughter's Raleigh 10 speed. I went with the wheel builder who was knowledgeable and seemed excited to work on building something strong enough to carry my lard ass around.
    2007 TerraTrike Cruiser (XL) Trike
    2004 Rans Stratus XL LWB Recumbent
    1999 Trek Navigator 200 21"

  7. #7
    EZ-1 SX to ebike Project
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    anyone got aerospokes? at over $200 a rim, seems pricey!
    There are no strangers here among us; only freinds we havn't met.

  8. #8
    Senior Member DieselDan's Avatar
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    Here's a thought: ditch the motor and batteries and RIDE the bike, instead of making it something it isn't. Otherwise, you're just making excuses to make you feel better.
    Bikes use brakes to stop.

    If your bike has breaks, don't ride it.

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