Amysystems JUST finished a re-design of their RWD chair. After 9 months of waiting for a test drive, the rep. finally got the first from R&D so I took it for a spin last week
It is not a "true" Rear Wheel Drive, but a hybrid
(cross between mid & rear wheel drive). Their website is VERY weak, but IMHO looks like Amy is concentrating on engineering. I tried their mid-wheel last June, so need to try it again for comparison while RWD impressions are fresh in mind. You can take a look at their mid-wheel over inclines, obstacles, grassy slopes, snow, etc...here: http://amysystems.com/AmyPower/main.html
I'm a C5-6 quad for 30+ years, so will give some highlights since 2-finger typing any longer a post is a PITA. Will try to answer any questions you may have, if I can. Started research for a new power chair over a year ago. Time to retire my 7+ year old Pride/Quantum Blast & check out all the new chair & seating options to meet MY needs/wants. I also have a Quickie2 manual chair which I use around the house from time to time, exercise & when going to places like a friend's house that's not accessible for entry. I have family spread all over the country, so something for flying & all the stuff (plane transport, transportation, etc..) was a big consideration.
The following might not be totally accurate, but the best opinion/info. I can do based on research & a couple of hours with the chair. Amysystems has been making some of the most versatile & lowest height
(floor to seat pan) tilt-recline-elevate seating systems for most any mfg's. power base for quite a while. A few years ago they decided to mfg. their own power chairs & opened a facility in Champlain, NY, USA. I'm not sure if they are sharing license/patent or making chairs for Quickie Canada (http://www.quickiexpower.com/
), but they appear to be almost identical. Many parts seem to be the same, so if you're trying to decide on customization, apparently LOTS of parts or options found on Sunrise Med. (Quickie USA) or Quickie Canada will work on Amy chairs. I think Amysystems has made some serious improvements to the power base though.
RWD: power tilt-recline, power center footplate, swing-away legrest, high back, adj. headrest, PG R-net control (new version), solid insert tires
MWD: power elevate-recline, power center footplate, PG R-net control, solid insert tires (referenced here but no full review)
BOTH: all parts & frame are aircraft aluminum. Lighter weight & VERY durable!! I've yet to break my older than dirt Quickie P-100 & V-521 of same material.
***I currently use 3" Otto Bock Cloud cushion, fixed canes & Jay Back which are about 18" above the seat pan, so the top-of-shoulder backs were very awkward for me.
1) Ride is awesome...very smooth & easy on the lower back. All 6 wheels & motor are independent suspension. Took rough lawn & large bumps in driveway/road at faster speed nicely! I think the MWD might(?) be a little smoother, but need to test again..
2) Drive motors run extremely quiet & an almost inaudible "clunk" on start/stop. Had to try to hear it.
3) Same for their newly re-designed power seating motors. Had to strain to hear tilt, recline or power footplate.
4) New! All pivot points/connections on suspension (#1 above) have aircraft bushings to eliminate wear & squeaks over time. Some "special" material (can't remember), not standard nylon.
5) Same bushings (above) in their sleek drop-in, swing-away legrest/hangars.
6) 3 motor options w/ biggest set to 8.5 mph. Supposed to be capable of faster? MWD is limited to about 6 mph max. option
7) Turning very close to MWD, but a little larger radius.
8) Adj. height joystick option. One of my must haves.
9) Joystick has a 6" lead to another plug, so can quick release to carry onto the plane to prevent damage.
10) Programmer is about 6"(l)x2"(w)x3/4"(thk) box. Plug between #8 connection (above) & custom program through R-net LCD screen. Also, has USB connection for firmware updates or trouble shooting with Amysystems tech support over internet.
11) Battery box opens from rear latch. Has pull-out tray & quick-connect plug. A must if you fly anywhere!
12) Center mount footplate does not interfere with front casters regardless of height!
13) More for the asking
1) Those big a$$ rear caster forks. Not a true RWD, so it is needed for this hybrid.
Solution: I think I can replace with different fork (ie: froglegs) or force a solid rubber front caster insert on it horizontally to make a bumper. Need to prevent,tearing-up walls & kitchen base cabinets after the martini so wife doesn't take away my driving privileges in a brand new chair.
2) No "stock" fold forward cane back like Pride has. Plane cargo doors are 34" high opening, so they will remove batteries, lay on it's side & cram stuff in which has led to broken parts.
Solution: There is a fixed, adjustable angle cane back option. Add some quick-release pins & fold. Or, install Pride's cushion in place fold forward hardware.
Arm's getting tired...so about it for the Amy. Still checking things out, but all-in-all the PRO's are winning over Otto Bock B600, Permobile Street
Don't want to get started on a BRAND NEW option out soon for me & lower SCI's. This look's WAAAAAAAAAY cool for travel: http://beachmobility.com/ZX1/video.html
Hope this helps.