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Post by dexameth on Apr 4, 2018 18:08:00 GMT -5
So for the past... months I guess, been a while, my belt has ridden awfully low at idle. This makes the clutch spin quicker and makes it engage too soon. So here we go: I researched all the belt lengths and landed on a 738x18x30, stock width and angle and 9mm longer than the normal 729. After installation, it was visible that at idle it's resting more to the top at idle. I swapped boss lengths from stock to performance, 1mm shorter, and didn't like the performance so just used stock. I got pics with the stock faceplate and with the Naraku performance drive face which shortens the ramp just a bit. Since I'm on mobile I'm going to upload in sequence: stock with old belt (worn 1mm thin), then stock faceplate with new belt, then Naraku faceplate and new belt. Now I go tedt drive... Results to follow...      |
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Post by dexameth on Apr 4, 2018 18:23:00 GMT -5
First run with the Naraku faceplate. It was very low rpm, but engaging very quick. Grunty, low rpm crawl up to top speed but at a good pace. Very comfortable riding.
JUST NO WHEELIES.
Swapping to stock faceplate next to wheelie figure this out.
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Post by dexameth on Apr 4, 2018 18:51:53 GMT -5
Second run with the stock faceplate. Felt pretty much the same. Little bit laggy but kinda the same.
I really think I need to pop in a 1.5k contra spring. I normally run stock, but I have consistent low rpms that I think this is a perfect time to try a stiffer spring. I mean the belt IS brand new...
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Post by 90GTVert on Apr 5, 2018 6:10:05 GMT -5
You can also try spacers on the drive boss to see if that frees up the belt at rest/idle as long as you make sure they don't exceed the diameter of the boss. Usually can find something in .5 and 1mm increments.
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Post by dexameth on Apr 5, 2018 6:30:33 GMT -5
You can also try spacers on the drive boss to see if that frees up the belt at rest/idle as long as you make sure they don't exceed the diameter of the boss. Usually can find something in .5 and 1mm increments. Yeah, true. I've had that in the back of my head bouncing off the fact the Naraku face plate performs like a shorter boss is installed. It has a large flat area in the center, machined to draw the pulleys together closer. I fear with shims it may drop the belt to the flat area only, currently the belt seems to be on the lip of the ramp area and the flat section at idle, the wear marks show it. With the stock faceplate I'm more than happy to give it a whirl. I'm just waiting for us to get them back in stock. |
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Post by 90GTVert on Apr 5, 2018 7:44:27 GMT -5
Generally, I haven't like pulleys with large flat centers. When I first started modding, I'd file stock stuff flat, but later started trying to keep more of the angle. Sometimes you'll get to a great spacing for the front pulleys for the low end and then it won't do as well up top. Some of this stuff can be tough to guess at and you just gotta try it and see if it works.
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Post by dexameth on Apr 6, 2018 9:46:02 GMT -5
So I got the 1.5k contra spring installed. RPMs did get better, but a little too good. I was rocking 8k at launch, with an awesome launch, but the RPMs would slowly get up to 8400 by the time I was doing 45-50. A little too high for my liking.
Got home, swapped back to the stock contra. I swapped 3 6g sliders for 3 5g, just to lighten the load a little bit and I'm closer. Very strong take offs, nice pull all the way to 45 and my rpms are 7200-7600. Kinda want them a little higher...
I may try all 7g sliders and the 1.5k contra, and 5g sliders with stock contra. We'll see.
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