|
7
1/4"
Gauge Bogies
Medium to Heavy Duty
   
|
|
Dimensions
- Wheel size 127mm (cut
from 5" dia blank) EN8 steel
- 1" diameter axles
- Length 516mm
- Width 282mm
(axle ends)
- Wheel base 300mm
- Height of cross plate
150mm (top of transfer bearings)
- Minimum radius - 15
feet
(4.5m)
Optional
Extras
- Shoe brakes
- Vacuum actuator
- Steel cross plate
- Castle nut instead of nyloc
|
Technical
- Industrial self aligning bearing blocks.
- 5mm steel frame with additional bracing.
- Strengthened bearing keeps.
- 5mm steel tie bar at bottom of bearing keeps.
- Ball transfer units for reduced friction on bogie
swivel.
- Integral vibration mounts.
- Precision press fitted wheels.
See them in service -Over 300 bogies sold as of June 24 - Railways with bogies in public service
|
These
bogies are classified as medium to heavy duty. They will happily sit
under an 8 person coach with out any problems. The axle keeps are
completely surrounded in 5mm steel and even braced with additional
6mm of steel around the top and sides of the bearing keep. This area is often over
looked on bogie design and can prove to be the weak link. I have used
the term "medium to heavy duty" to try and put off the eccentrics who
want to build 2 ton
coaches and carry 25 people.
It is nearly impossible to provide springs for suspension and get a
stable ride, so with these
bogies the springs are for compensating. Suspension is provided by the
eight anti vibration mounts in each bogie which hold the ball transfer
units in place. The use of ball transfer units not only reduces
friction for rotation of the bogies but also ensures that the weight
being
transfered down from the superstructure is always in the centre of the
bogie frame.
Wheels
are press fitted to axles. Avoid wheels that are welded on to
axles as it can mask poor fit where weld will eventually fail.
Price quoted is for two bogies and includes VAT.
|
