Regular Member
Joined: 12/01/2011
Location: AustraliaPosts: 62
| Posted: 11:30am 21 Feb 2011 |
Hi bob,
I always do things with maximum engineering challenge
divided by minimum time and utilize as much junk from
the shed, topped up regularly by local tipshops, as possible.
I just realized I have a snapper ride on mower with a good
cutting deck (appx 28") but stuffed transaxle buried in there.
I could easily build a frame with a wheelmotor on each corner,
linked with chains for steering. This would allow 270 deg steering,
or enough to rotate on the spot. I would need to dry-sump
convert the motor, but the extra cutting deck width would
be worth it, however it will be heavy, wider track, and be more
likely to destroy itself if it tips over. A mercury switch with oil
pressure switch on ignition circuit is probably some insurance.
I just don't want to break the wheelmotors. Maybe I just stick
to the little 18" pope. Keep it light and nimble. The wheelmotors
have a 6" rims with fat 4" knobbly tyres so it would be good to
lower pressure. I was going to swing the front axle about 15 deg
to keep all feet on ground, but it puts C/G on three points instead
of four so I don't think I will. All wheels driving should be enough
if one wheel finds itself dangling. I won't electrically differentiate
the motors for this reason too. Skid steering is sounding better
all the time.
Regards Alasdair.
Amc-elec