30-09-2017, 09:31 PM
Hi, a question for any trials competitors out there. I plan to have a go at a 750mc A7 trial next month. I've never competed before, so I'm just hoping to have some fun and learn something!
I've had a look at the regs, and there is one technical requirement that I need some advice on. Could someone please help me on the requirement for extra or "double" throttle return springs. My special is basically mechanically a 1927 chummy with original up-draft zenith bronze carb and original chummy throttle linkage. There is already the standard return spring on the linkage. Do I just need to add an extension return spring onto the carb throttle arm (SU style) to conform? (Making two springs in total) or do both springs need to be actually on the carb itself? Thanks for any advice
Robin
I've had a look at the regs, and there is one technical requirement that I need some advice on. Could someone please help me on the requirement for extra or "double" throttle return springs. My special is basically mechanically a 1927 chummy with original up-draft zenith bronze carb and original chummy throttle linkage. There is already the standard return spring on the linkage. Do I just need to add an extension return spring onto the carb throttle arm (SU style) to conform? (Making two springs in total) or do both springs need to be actually on the carb itself? Thanks for any advice
Robin