Lotus Elan

Knock-on wheel nut handing

PostPost by: ttaunton » Sat Apr 23, 2011 8:58 pm

This has probably been covered before,,,,but knock on wire wheels, as used on Austin Healey, MGA, Triumph and MG, have the wheel with the RH threaded Knock-on on the LH side of the car. The Lotus has it the other way round. The only difference I can see is the difference in the sense of the locating tapers.
The Lotus spinner has a coarse male taper that beds onto a female taper on the wheel, drive being provided by the pegs. The 42mm splined (52mm on a Jaguar) Dunlop wheel/Rudge splined wheel is located by an inner taper on the wheel that mates with a taper on the hub, and an external taper on the outside that mates with an internal taper within the spinner. Basically the tapers are the opposite way round in the two systems. Somebody in the Lotus factory, developing these wheels, must have worked out why the threads should be opposite to the splined type wheels. Perhaps they found out the hard way? Anyone ever rebuilt an Elan and got them on the wrong side of the car? Did the wheels come off? I can't really see why the sense of the tapers should make any difference.

ttaunton
ttaunton
Second Gear
Second Gear
 
Posts: 51
Joined: 11 Feb 2007
Location: Virginia Water, Surrey

PostPost by: StressCraxx » Sat Apr 23, 2011 9:08 pm

"Somebody in the Lotus factory, developing these wheels, must have worked out why the threads should be opposite to the splined type wheels. Perhaps they found out the hard way?"

They were designed that way on purpose, exactly as you stated. People have indeed swapped the hubs to opposite sides in error. The wheels will loosen very quickly and exit the hubs.
There is no cure for Lotus, only treatment.
User avatar
StressCraxx
Coveted Fifth Gear
Coveted Fifth Gear
 
Posts: 1012
Joined: 26 Sep 2003
Location: San Francisco Bay Area, California

PostPost by: rcraven » Sat Apr 23, 2011 9:59 pm

Robert
rcraven
Third Gear
Third Gear
 
Posts: 254
Joined: 23 Oct 2007
Location: UK

Total Online:

Users browsing this forum: No registered users and 7 guests