Dual throttle return springs

sander288 "Bolt-on Master"

1,404 posts · joined Aug 2008 · 24 Aug 2010, 1:13 pm

#798228

Was talking to troy at Eastern Creek this weekend about the scrutineering for the day, he said they really harped on about double return springs.

What are people running?

I have a spring that is on the engine lid side of the throttle cable but though i'd run the standard type return in between the carb and fanhousing, are these still available?

The car is 1300, with single 30pict, but will be upgraded to twin carbs soon, so what do people do for twin carbs?

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Sides Veteran Volks Folk

2,220 posts · joined May 2007 · 24 Aug 2010, 2:10 pm

#798236

Yeah - pretty common thing for scruits to check.

Dunno of anyone running a Volksy with a single carb other than you Shaun... with twin Webers, Kads etc. you end up with a spring at each carb, either running up to around the air cleaner, or maybe down/out to the inner guard.

For your setup tho... why not just run a second and looser spring beside the stocko 30 PICT one ??? CAMS rules says you have to have two springs... doesn't say they have to be connected at separate places.

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Craig Torrens 6 times Australian, 7 times State Hillclimb Class Champion

8,040 posts · joined Jan 2003 · 24 Aug 2010, 3:38 pm

#798245

Schedule B, point 7.............just needs to comply with that.

http://www.camsmanual.com.au/pdf/10_gen_req/GQ03_Schedule_A_B_Q310.pdf

The problem you will have with the OEM spring setup is if you snap a cable at the carby end then its possible for the spring to fail in returning the throttle to a closed position. It would be best to have the spring on the shaft/arm and then onto the carby body as well.