If it's the model I'm thinking of (I have seen the kit for sale in many shops, and the completed model
at a number of IPMS shows) it is actually 1/9 in scale. It's currently marketed by Revell but I'm not
sure if they originally made the moulds; I may be incorrect but I think it was available under a different label
in the past.
Anyway, good luck in building it, I'm sure it'll result in an impressive finished model! The Kettenkraftrad
is a tiny vehicle and really needs a larger scale than even 1/35 to do it justice.