Distance btwn Sprockets Toylander 2

[geekygrilli]

Hi guys

Just wondering if anyone out there can tell me the distance btwn the rear wheel sprockets on a standard two motor set up with standard wheels. I need to work out if my mobility scooter axle will work without too much messing about.

Many thanks

Christopher

[Tombraider]

Christopher,
The sprockets run very close to the bodywork (about 5mm away). I had to have my scooter axle (Pride Hurricane) shortened by a machine shop. I was told that basically, scooter axles come in two different widths; 27 and 29" (not sure how true this is). Hence they are normally too wide to fit in the rear body tub as is or too narrow to be used as an axle on the Toylander, unless you make adaptor hubs as some people have done.
Hope this helps. I have the distance between my sprockets written down somewhere if you need it.
Regards
Mike 

[Tombraider]

For some reason it only attached 1 picture in the previous post.
Mike

[markh15]

Hi Christopher,
The axle widths that Mike gives are correct, the 29" units are (generally) on the 4 / 8 mph scooters.

Interestingly, the 27" units will fit under the seat on the Toylander with a little juggling, and the axle shafts stick out into the rear wheelarch enough to attach sprockets to.

I know this because both Multisync (Walter) and myself have used this method of propulsion to great effect.

You will have to gear the axle down a little by fitting smaller sprockets to the scooter transaxle and larger ones behind the drive wheels. I used the ratio of 3:1 with a 60 tooth sprocket at the wheels and a 20 tooth one on the transaxle.
Richard Shepard can supply sprockets machined to fill your needs, or you could try Technobots (www.technobots.co.uk) and Bearing Boys (www.bearingboys.co.uk) if you wish to make your own mounting hardware.

If you need to see what I'm waffling about, check out my website for loads of pictures, just click on the 'globe' icon under my user name (top left).

Hope this has helped,
Regards,
Mark.

[geekygrilli]

Thanks guys, much apprecited.

I think I'll have to modify my scooter axle, by only 10 mm or so. Ho hum - another evening devoted to the toylander!

[multisync]

Hi
The sprockets are about 18 inches apart, the width of a Shoprider scooter, and most 4mph "pavement" models, is about 21 inches to the outside edges of the tyres. The 8 mph models are often bigger.
I was able to use the axle without modifying it, I simply fitted sprockets on the ends of tye shaft, with the boss on the outside to keep the sprocket width as narrow as possible and juggled the wheel positions slightly to suit.
The wheel size was increase by a ratio of 3/2, so the sprockets were at ratio 2/3 to compensate. The net result being that the distance travelled per revolution of the  axle remained unchanged.

The picture gives the basic idea, the tape on the chain is to make it show up better in the pic, and in reality the sprockets do line up correctly, the camera angle makes them look out of line.
Best Wishes
Walter