This is the complete mail-exchange with TWE.
The carburator arrived today, but I am sorry to say that it is not what I ordered.
The carburator body is stamped 26, we have both refered to it as 26 mm,
but the actual bore is 25 mm.
This is not what I want.
3 dec 2004
Im sorry you find a problem with the carburettor, but that is the carburettor that we advertise and it is the one the manufacturers advertise as a 26mm. We have sold and used on our customers scooters about 150 this year with no problems.
Could you please let me know what you was expecting as there is a picture in scootering mag.
Every carburattor all over the world, is specified by the size of the bore, i.e. the big hole that is connected to the airfilter in one end, and, in this case the crankcase, in the other end. For example, the SI20.20 have a bore of 20 mm, and the SI 24.24 a bore of 24 mm.
With this practice, a carburattor that is specified by you as 26mm,should have a bore of 26 mm.
I measured the bore of the carburattor you sent me, with a vernier caliper, and the bore is 25 mm. Your supplier has either made this carburattor wrong, or fooled you 150 times this year. As the carburator is stamped " 26 " he is liabilied to fraud.
I have seen your ad in Scootering, Febr. 2004, but it is hard to see on that picture if the bore is 25 or 36 mm. But below the picture it states „SI26/26“ that indicates that it is a 26 mm bore.
4 dec 2004
You seem to have a problem so please send the carb back and i will refund you .
Send it back, never! I am going to frame it, together with the reciepe, and place a brass sign below reading „Great Britain goes metric“!