I'm currently sorting out the workshop and clearing out prior to Stoneleigh , I have this pair of rear arch moulds I have had for a couple of years and done nothing with them as most of my work has been with Dashes , Aeroscreens , Cycle wings and other parts I've never done anything with rear arches can anyone identify them for me .
They look like Caterham / locost style , the one arch has a protruding part on the inner to the tub as below , any help would be much appreciated .






I've not made any from it yet although I can also see that the moulds have been taken off used arches are there are four small dimples from where light units would be bolted to the arch .




[Edited on 20/4/14 by aerodynamix]

Well, they're not MNRs - I just mounted one of mine, tonight, and so am overly-familiar with it...

They're not Stuart-Taylor / Aries rear arches.

Is the protruding part on the nearside arch?

They look like Locost (narrow ) rear arch moulds , but probably derived from Lotus or Caterham wider rear arches , the left hand arch is a different shape to allow for the days when the exhaust ran under the arch and to a rear exit.


Thats' IMO , but could be complete cobblers!!

Yes the protruding part is on the nearside , the flanges are almost vertical too if that helps , a friend had suggested they were locost which I agreed with but having limited knowledge of the rear arches on locost's I thought it would be best to ask the combined expertise on LCB

[Edited on 21/4/14 by Surrey Dave]