Building a Better Wheelchair

Shaun,

2 large wheels up front and smaller in the rear on casters or vice versa would probably work just fine.

Hovv's plastic drum find is fantastic! The only downside I see to that is if you go to a rocky beach they may not roll well over the rocks, where a rubber tire would. It would be hard to get it over obstacles as well do to lack of traction unless perhaps you wrap them in a rubber sleeve? Like mouse pad material. or at least make a few wide strips around the circumference to add some traction.

[TDC57]

Great point Dicky!.. the rocks would be problematic!.. but as you stated above I can wrap them with something that would work..

Hovv's find was an outstanding pull! it saves me over $200 on tires alone and about 40 lbs of weight!.. Just a huge pull!!!

Thanks for everything!..

after looking at several, i really think te big wheel vs small wheel thing is personal preference.

big front, small rear


big rear, small front


big x4


low rider (low cog) (alum frame) big front small rear


the accesory chair

[_paralyzed_]

pm me all you want, I'm not doing nothing but playing on rc-monster and forming class action lawsuits The 2-4 wheel debate: it won't effect the passenger, only the person pushing it, and in sand they are expecting some work. I think to cut down on weight and complexity 4 fixed wheels. The wheels need to be as large as possible for less rolling resistance, but that has to balanced with the added weight.

[JERRY2KONE]

Whos going to push anything?? I thought that we were going for a brushless powered beach chair. After all is this not the worlds best Brushless site?? This thing has to be a remote control brushless chair that will take the wheelchair world by storm or whats the point...

Originally Posted by _paralyzed_

pm me all you want, I'm not doing nothing but playing on rc-monster and forming class action lawsuits The 2-4 wheel debate: it won't effect the passenger, only the person pushing it, and in sand they are expecting some work. I think to cut down on weight and complexity 4 fixed wheels. The wheels need to be as large as possible for less rolling resistance, but that has to balanced with the added weight.

Originally Posted by JERRY2KONE

Whos going to push anything?? I thought that we were going for a brushless powered beach chair. After all is this not the worlds best Brushless site?? This thing has to be a remote control brushless chair that will take the wheelchair world by storm or whats the point...

on the "expensive model" he is trying to make a budget wheel chair first to bring mobility to more that need it.

[bruce750i]

There went cheep.

Well, i think the most important thing to most disabled people is independence, and i think a manual chair just doesn't cut it in my opinion. A powerchair would be at the top of my list.

[_paralyzed_]

^^^^^^^^+1! Mine tops out at 7.5 and can climb like a 20 degree incline if that

[BL_RV0]

Who are you building this wheelchair for?

[TDC57]

Originally Posted by DickyT

after looking at several, i really think te big wheel vs small wheel thing is personal preference.

Wow Dicky Thank you for the effort!! your too kind! I really do appreciate it..

Thank you!.

Shaun.

Originally Posted by JERRY2KONE

Whos going to push anything?? I thought that we were going for a brushless powered beach chair. After all is this not the worlds best Brushless site?? This thing has to be a remote control brushless chair that will take the wheelchair world by storm or whats the point...

Jery!, you've been on fire / your "A" game lately!.. All happy and having a great time with us all in your post.. WAY TO GO SIR!.. I ilke it when your relaxed and can have some fun.. I was still blown away in "where's linc" you had everybody doing bouble takes.. whatever is going on GO WITH IT!..

As for the BL beach chair that will come!.. Please you know me of course that will come but for now I'm just going to start out slow and build my first prototype, if and when it works then I'll either add to it or start over with greater knowledge and then build BL.. I still want to try to build my 3rd world one out of bike's and i've got a few other things going on so it might take a while but I will get to it! I can guarantee that before the year (09) is over I’ll have out the baddest 4 wheel, 4 steering, all terrain chair with upper and lower airdams and rear smoke system going 20+.. or IE next years project “X” winner!.. LOL.LOL.LOL..

Thank you for also volunteering earlier Sir..

Have a great one Jerry and I hope you keep your new and improved mood!..

Shaun…

Originally Posted by Fast5sRevo88

Well, i think the most important thing to most disabled people is independence, and i think a manual chair just doesn't cut it in my opinion. A powerchair would be at the top of my list.

I totally agree and I’m listening.. But for my first one I'm going manual, I want to know what it takes to build $1200 beach chair.. Then I'll either work on my 3rd world chair and or do a BL one.. But I will have one soon so if you can please start to think about the drive system for it that would be killer!.

Here is what has been offered up thus far by TexasSP. http://www.hobbycity.com/hobbycity/s...28eq:_70-55%29

I'll probably need at least two total of them if not one per wheel..

What do you think?? got any other recommendations??

Thanks for your time and your input as it is always much appreciated!..

Thanks – Shaun..

Originally Posted by _paralyzed_

^^^^^^^^+1! Mine tops out at 7.5 and can climb like a 20 degree incline if that

I can and will do better than that! but I guess I need to ask what is / should the top speed be?? that quickest one I've seen went 10mph, so how quick do I go paralyzed?? do I double it?? and what kind of runtime should I account for during a typical day ??

Thank you so much for your time sir..

Shaun.

Originally Posted by BL_RV0

Who are you building this wheelchair for?

We'll it a prototype for now! I really don’t have any plans on selling it at the moment, it would be nice to complete it before Christmas and give it the Huntington beach parks and rec for a Christmas present.. I mean how cool would it be to take my kids to the beach (3 miles away) next summer and see Dad’s chair being used!..

Or I’ll find someone who really needs and will use it, then I'll pass it along as a gift from all of us..

Or TBD?? LOL.LOL


Have a great BL and thanks for stopping by..

Shaun.

[/QUOTE]I totally agree and I’m listening.. But for my first one I'm going manual, I want to know what it takes to build $1200 beach chair.. Then I'll either work on my 3rd world chair and or do a BL one.. But I will have one soon so if you can please start to think about the drive system for it that would be killer!.

Here is what has been offered up thus far by TexasSP. http://www.hobbycity.com/hobbycity/s...28eq:_70-55%29

I'll probably need at least two total of them if not one per wheel..

What do you think?? got any other recommendations??

Thanks for your time and your input as it is always much appreciated!..:smile
I can and will do better than that! but I guess I need to ask what is / should the top speed be?? that quickest one I've seen went 10mph, so how quick do I go paralyzed?? do I double it?? and what kind of runtime should I account for during a typical day ?? [/QUOTE]

The HobbyCity 180kv outrunner would be great if outrunners r as good as people say they r (never had personal experience with one). I would suggest one on every drive wheel. I must ask though, how dependable r these motors?, i mean it isn't like our rc's that u can simply pick up and take home to fix, if the chair breaks down u r stuck until someones finds u; not good if its cold outside. I think 15mph is good number to shoot for. My chair will do a 16 mile range @ full tilt(7.5mph), so i would like to at least that of range on a single charge going 15mph.

Control is also on the top of the list, it can't be a 2-speed; 1st speed is stop and 2nd speed being "OH CRAP, SO FAST MY EYES R BLEEDING! My powerchair has such fine-tuned control that i leave it on it's full power setting all the time. I can creep, go full-tilt,and everything in between all on the full power setting.

[_paralyzed_]

Originally Posted by Fast5sRevo88

Control is also on the top of the list, it can't be a 2-speed; 1st speed is stop and 2nd speed being "OH CRAP, SO FAST MY EYES R BLEEDING! My powerchair has such fine-tuned control that i leave it on it's full power setting all the time. I can creep, go full-tilt,and everything in between all on the full power setting.

all of that programming is in the controller. There are 2 or 3 manufacturers of controllers(joysticks) that all of the wheelchair manufacturers share. The sophistication and complexity of the controller will be very hard to meet, and for the controller the chair should use existing parts. The controllers can control top speed, braking speed, joystick sensitivity, joystick throw, acceleration, turning speed, turning acceleration, reverse speed, torque, more I forgot and have 5-6 different programmable drive profiles, along with being able to control several peripherals, such as tilt, recline, elevate.... unless we can do better!!!!!!!!

How many amps can a stock powerchair controller handle? Also, is a powerchairs speed restricted from the controller or the gear motors on them. I mean the best motors money can buy would still only get u to 7.5mph if the controller is what constricts it.