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Post by billwill on Jan 7, 2024 22:27:07 GMT -5
You should be able to lock the rest wheel with a drum brake setup. Good quality brake pads. Plus a good cable with very little drag should make it easy to apply pressure. I did find once trying a cheap cable. It would just stretch as I pulled it. 😞 Yep I think I just need to order a quality cable so did that last night. Should be here soon so we’ll see how she plays. |
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Post by billwill on Jan 7, 2024 22:30:55 GMT -5
Been a while since I checked the plug so I pulled it tonight and took a look. I didn’t do a WOT plug chop or anything so this is simply from varied riding. What do we make of this? Seems pretty rich to me. Might have something to do with this 32:1 mix I’ve been using for break in. I’m going to start running 40 or 50:1 now and maybe throw in a new plug.   |
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Post by bigmatthew86 on Jan 8, 2024 13:31:12 GMT -5
Plug doesn’t look that bad to me. What are your cylinder head temps? If you’re not hitting that 350 you are still rich.
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Post by billwill on Jan 8, 2024 14:11:14 GMT -5
Plug doesn’t look that bad to me. What are your cylinder head temps? If you’re not hitting that 350 you are still rich. 330 was the hottest I saw. trying to figure out things with temps being so cold here - i've been tuning with cold weather in the 30's. |
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Post by bigmatthew86 on Jan 8, 2024 16:41:33 GMT -5
I don’t believe air temp plays that much into it. I’d drop 1 size on the main & see where you are. Like we said you can run that aluminum a little hotter & still be safe. I think something is still holding you back. My 05 would do 55-56 with me sitting up on the flat & l’m 260lbs. That was s6 street race, dell 17.5mm, yasuni r, multivar, 15/50 gears. Turning around 9700-9800rpm
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Post by Zino on Jan 8, 2024 18:03:17 GMT -5
When you go 40 to 50 to one that will actually make it richer by about 1/2 a jet
32 to 1 is over 3% oil getting in the way of cooling fuel mixture compared to 2.5 % at 40 to 1 or 2 % at 50 to 1
If you are rich at temps in the 30's with the cold air you will be way rich in the summer.
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Post by billwill on Jan 9, 2024 10:53:39 GMT -5
Well, you can’t fix stupid right? Discovered this morning that I had been running this setup this whole time without this lil guy, that is supposed to go in between the contra and clutch. Hoping and praying this is the answer to (most) of the problems I’ve been having.  |
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Post by monsterunderyourbed on Jan 10, 2024 10:59:22 GMT -5
The comic book-esque look of these gauge clusters always make me smile
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Post by billwill on Jan 12, 2024 6:32:57 GMT -5
Added the spring perch and thought that would help things with the clutch engagement and overall feel and swapped down to a yellow contra. Didn't improve much. I think I'm faced with the harsh reality that this pipe is just too much for this cylinder. I tried different rollers from 3.8g to 5g and the pipe is trying to make the cylinder rev to 12k rpm with lighter rollers and asking for more at 11k with heavier ones. Not to mention, even with stage6 super hard clutch springs with engagement set at 8k rpm, it bogs for the first few feet until hitting the powerband at 8.5-9k. Here's a vid at idle. I am still only seeing a top speed of 60-62mph which is crazy to me. So another harsh reality is that the 14/42 gearing may have been a bit too ambitious with this setup. Been seeing guys hit 70+ on stock prebug gearing with similar setups. I'm leaning in a couple of directions for what I can do next here: - upgrade the cylinder to match the pipe (Athena hyper or MXS)
- Snag a trusted Yasuni c16 and downgear to stock or 15/50 (I don't want to go back to the Polini 4 race)
- set everything on fire
Here is a video from one of the last rides where you can hear the long, slow bog in getting started, and some kind of a strange popping noise if I were to roll into the throttle too quickly during the initial takeoff. I don't know if this is an indication of carb tuning needed or just the pipe/cylinder mismatch. Almost sounds like it did when the ground wire for the starter broke off a while back and I was chasing that problem down - but that wire is secure now. |
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Post by bigmatthew86 on Jan 12, 2024 8:54:53 GMT -5
If you’re able to turn the rpm’s I wouldn’t think it’s the gearing that’s the problem. I could be wrong. 11-12000 seems pretty high so I would think with your gearing it would be flying.
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Post by billwill on Jan 12, 2024 9:45:31 GMT -5
If you’re able to turn the rpm’s I wouldn’t think it’s the gearing that’s the problem. I could be wrong. 11-12000 seems pretty high so I would think with your gearing it would be flying. my thoughts exactly... im going to fiddle more with contras and try to run the softest one i can. lack of travel in the front and rear is where the the lost speed is. |
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Post by bigmatthew86 on Jan 12, 2024 10:20:41 GMT -5
What belt are you running? A lot of aftermarket belts are shorter than the stock one. I ran a yellow contra, s6 sport clutch with medium springs, multivar with 6g rollers, 15/50 gears. I know not the same setups but I was able to get pretty much full travel.
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Post by billwill on Jan 12, 2024 11:17:58 GMT -5
What belt are you running? A lot of aftermarket belts are shorter than the stock one. I ran a yellow contra, s6 sport clutch with medium springs, multivar with 6g rollers, 15/50 gears. I know not the same setups but I was able to get pretty much full travel. I'm running the supplied belt with the malossi overrange setup. Which cylinder and pipe were you running? |
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Post by bigmatthew86 on Jan 12, 2024 11:20:36 GMT -5
I had a stage 6 street race & a Yasuni r. Still had electric start, auto choke, & oil injection.
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Post by billwill on Jan 12, 2024 13:23:41 GMT -5
I had a stage 6 street race & a Yasuni r. Still had electric start, auto choke, & oil injection. i have this combo on my vento triton, killer setup! |
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