Raleigh Dyna Tech appreciation and information thread

[averagebiker]

Anyone know the seatpost diameter for Dynatech Road bikes? The restoration of my 1994 Corsa 405ti has begun and I am not sure the seatpost it came with is original/correct.
Cheers

 

[Mark south wales]

it varies depending on the year and the material, most of the mt3 - mt4 range with tims titanium is 28.4mm. spme of pro range, like my 2070 tt lo-pro, with reynolds 653 has 28mm. some of the later mtrax range has larger 31.2mm... the mtrax 27.5`s and 29ers are 31.8mm .. how ever for yours, id say would be same as an mt3/4 28.4mm, anybody else, want to add anything?

 

[Markybeau]

it varies depending on the year and the material, most of the mt3 - mt4 range with tims titanium is 28.4mm. spme of pro range, like my 2070 tt lo-pro, with reynolds 653 has 28mm. some of the later mtrax range has larger 31.2mm... the mtrax 27.5`s and 29ers are 31.8mm .. how ever for yours, id say would be same as an mt3/4 28.4mm, anybody else, want to add anything?

MT4 is 26.4 -26.6mm. They take a 28.6mm front derailleur. Although this is not helpful to the OP. Best not to confuse internal with external measurements.

MT4 is pre-TIMET tubing.

@averagebiker your best bet is using a vernier / micrometer.