Triumph tiger 90 twin frame

[mark2]

Triumph tiger 90 frame , I have what was bought as a tiger 90 frame but im not sure , the two top tubes are both the same size at about 1 1/2 inch , when did they do this ? I have seen the two tubes before but they have always been different diameters to one another, as with a lot of old British frames the numbers have fallen off at some point  so lost that way of identifying this frame.

[mark2]

looking the wrong side for numbers they are there but frame is unusual 1964 ?

[Boo]

There is a web site dedicated to T90's and T100's. Just google it and he has ALL the info you require if you have the chassis number.

[mark2]

thanks I am waiting for the dispatch record , this could well be home made , its been done well