ET: Engine (Twin) What clamp is used for exhust pipe ?

[The VOC Spares Company Limited]

We have been asked by a customer....
My exhaust system was modified to use screw in inserts into the heads and the pipes are split to slide over the extended insert. This system uses large finned brass clamps and one of the clamps is broken. Do you know what clamp is used?
Any one know what bike would have 'donated' these clamps?
Ian

 

[greg brillus]

Series "A".........................????

 

[The VOC Spares Company Limited]

Don't think so, the 'A' pipe is larger od than post war, I found a reference to Arial but no model details.

 

[davidd]

I don't know the size of the Triumph inserts, but they use and insert and a clamp. A photo of the broken one would help.

I would scroll down Google images and see if something is familiar.

https://www.google.com/search?rlz=1......0...1c.1.64.psy-ab..0.0.0....0.CZm4e3O25tk

David

 

[ClassicBiker]

I believe 1-5/8 on the 350s and 500s and 1-3/4 on the 650s.
Steven

 

[macvette]

My prewar Speed Twin has 1&3/4"pipes. Various pre unit Triumph Spares dealers carry chromed clamps for these and for 1&5/8". Depends on the diameter of the modded Vincent pipes. VOC spares co are 1&5/8"