The sled came with that (used). Haven't bothered to re gear since I have a 1,25 track. Maybe I will have to re gear for next season. I was going to put on 7 grams in tip now, with 2 lock washers and one "regular" 1 gram washer. That didn't work out because the bolt would even so slightly touch the "spider wall" under the roller (if you know what I mean). I mean if I've had 2 regular washers and one lock wahser, then it might would have worked (I used the regular one gram washers 3 of them in the heel, so now I only have 3 left). Now, I'm in serious doubt that 1 gram will cure a 2-300 rpm overrev but I think it will bring me a little closer. Too bad, I ran out of regular 1 gram washers, and the delivery time is like 3 weeks. LOL SOOO close. So now I have 4 options:
1) Get one more regular 1 gram washer, put it on and see (when I get it)
2) re gear to 23/38 and see what happens
3) get a 50/38 helix.
4) relieve some tension in the secondary (to 60 degrees from 70) to bring rpms down sliglty.
Going testing tomorrow when I wake up (going to bed pretty soon, time is like 2,38 am)
Going to try option #4.
The higher the number of the helix the steeper. Now If I am not mistaken, a 50/38 will load the engine sliglty more than a 50/36 because the latter will hold the secondary in a higher "gear" for longer.. or something like that...