Dynojet never supplied slide springs for a GS. They may have for other bikes, but not a GS.
They slowed the slide rise by suggesting you block one hole etc, so a solfter spring would be counter productive to their jet kit's flaw anyway.
Cool.
Buddha.

Oh you got me thinking there, see i had a spare set of carbs that turned out to be setup using of dj parts and mikuni jets, never seemed to be quite right for 1 reason or another, it remains a mystery. Once i realised that the needles etc were dj i yoinked the bits to play with and set it up with cross referenced mikuni mains.

I had assumed they were dj springs, as they were shorter and softer like dj are on most bikes.

Anyway being curious and given that ive got a spring oddity / its a rarity youre wrong ive just had a quick look on the dynojet site. Its only giving US info on the pdfs but up to 00' they didnt get springs in the kit but 01+/F got the springs. Being in the uk im not sure if we got different kits. Ive definetley got shorter / softer springs but cant quantify their origin as they're from a set of bst33 mystery carbs however the bsr34s got them in the kit fosho'. Could be a regional thing that we got them in the uk or someone's used bsr34 dj springs... Who knows, either way ones snapped.

Yeah they plug/s the slide to slow it down, suggest removing a plug for stage 3, youre right it does seem counterintuitive, id assume the softer spring in part works with the lesser forces, to compliment the plugged diapgragm a bit more. Itll slow the diaphragm returning too, so i guess itll open quicker if its slower returning on decel to throttle modulation but also removing the plug will help reduce both the slowing effects. Its all just to bring a little more control to the aggressive needle taper so that its not on/off or lifting so quick that it gets too much fuel in that given operating range should it be opened up too quick but they also use dignificantly smaller mains. Im purely speculating and trying to rationalise their logic. Really they're just using different parameters to arrive at the same conclusion for the sake of getting it onto main circuit marginally sooner. Ive never really put any thought into why they do it tgat way to be honest. Id be interested to see back to back dyno sheets of tuned vs dj tuned just to see what differences there are and where with both stage 1 and 3. Id imagine any differences are nominal. Once again im speculating off the top of my head. Going to see what literature i can dig up on such effects purely for my own curiosity.

I love playing with carbs, i can say my experience with dj kit on the gs vs just tuning on std slides/needles is that i seemed to pick up good initial punch in the 1/8th to 1/4 throttle, little bit better as it enters mid range  but that's about it and 4/4 was good but was never quite as good as before the kit, always felt like i was between jet sizes. Cant quantify with dyno data but did a lot of back to back testing. Albeit i dunno like 5 yr ago.

I know there's certain applications ie different bikes where using factorypro has shown to be optimal rather over just jetting, think they use ti needles and different tapers broadly speaking. id assume dj has its place too but really is it worth the money to get a kit... Hell no. Thats ultimately my issue with them.

Be curious to hear your experiences with the dj kits or thoughts on any of it, personally id never waste my money on a their kits, not sure if theres any valid merrit to them but i suspect its largely gimmick.

But yeah you've got me thinking, the springs are a mystery so im gonna double check ive got the right dj needles in for the bst33s, if so it means i can run standard springs,  pull the plug/s out and tune to suit.

Once i find a cheap source of jets i'll look at comparing 1 tune vs dj tune again for a bit of fun. Sourcing the right size drills and shaft deviation have turned drilling jets into a no go for now.

 

Thanks very much Chris,
 I will try this out over the next few days.
I have only two thin washers on the left of both cam shafts , o mention of wave washers on the right hand side. (That's according to the Haynes manual), will let you know how I get on .
  Thanks again.

awww yea!  that's the best feeling!

,..when it starts

It runs! But the ECU was bad, Genuine recalled them, so I am checking on whether a replacement is available via recall. Otherwise, I have the ECU from the other one on it and it runs fine.

New tires inbound, then ride!