OzVMX Forum

Clubroom => General Discussion => Topic started by: lucien on December 31, 2012, 05:47:52 pm

Title: Why is a RT1 pre70
Post by: lucien on December 31, 2012, 05:47:52 pm

my RT 1 is 1971 , the first one , but is it pre 70 to race in.

Title: Re: Why is a RT1 pre70
Post by: Iain Cameron on December 31, 2012, 06:01:09 pm

Yes the RT is classed as a follow on model so pre 70 is the go . Iain

Title: Re: Why is a RT1 pre70
Post by: Nathan S on December 31, 2012, 06:05:15 pm

The basic idea is that while they weren't available in 1969, all of the technology is pre-70 (and significantly outclassed for pre-75) so they belong in pre-70.

I think it's a good call - they boost the numbers in the pre-75 263cc+ class, without damaging the spirit of the era. If anyone ever managed/manages to win the class on an RT1, then they bloody well deserve it!

Title: Re: Why is a RT1 pre70
Post by: Freakshow on December 31, 2012, 06:21:44 pm

And your rt1 needs to be piston port as well....

Title: Re: Why is a RT1 pre70
Post by: firko on December 31, 2012, 06:27:19 pm

Quote

my RT 1 is 1971 , the first one , but is it pre 70 to race in

The first black tank/yellow pinstripe RT1 was released in May 1970.

Title: Re: Why is a RT1 pre70
Post by: vandy010 on December 31, 2012, 07:34:47 pm

what they said^^^
no reed block, just carby straight into the barrel and she's good to go ;)

Title: Re: Why is a RT1 pre70
Post by: Iain Cameron on December 31, 2012, 08:48:39 pm

Lucien the guys posting above plus a couple of others on here are  the DT/RT gurus between them there is a mine of info for you to tap into if your going to race a pre 70 Yamaha .  ;D