(Weekly) KartPulse Racer Videos Thread

Exciting race! This last lap moment was :sweat_smile:

It looked like you were pulling on Chris pretty hard on the straight bits. Was that draft at work because I assumed diff gearing.

Pretty sure Andy and I were on the same gear, and everybody was experiencing the strong draft going up the hill and into the “carousel.” The draft was a little too strong (if that’s a thing) on some laps and caused my mishap in the prefinal.

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A few laps from today at 103rd with some MG Greens. They are about 0.7-0.8 seconds quicker than levantos or yellows here. Not as good as the bridgestones from 20+ years ago, but still really good. I was getting about 2.3 lateral g’s on the levantos in the monza turn, and 2.6 g’s on the greens. Back in the day we were hitting 3 on the YGB’s.

Fun stuff.

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@ApexGRT great camera position. Probably the fastest laps I’ve seen at Jax.

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Thanks I agree about the angle, chin cam is the best!

I was 1 of 3 lucky winners of a full day of testing a Jesolo kart. It actually felt really good and balanced, the brakes were amazing. Very easy to modulate!

My best time of the day was 50.6, that would put me in 53rd place of 91 in 2021 world champ quali here in Kristianstad. Not to shabby considering I ran a good ol TM KZ10B

Enjoy

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Nice! Kart looks planted and easy to drive. I’m sure much of that is your prowess.

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Surprisingly easy actually, I’ve driven basically every brand. But this one did stand out, it kept giving all day!

The smoother I was the more I was rewarded

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My first big hit after 8 years of karting. I’m #07.

Frame was bent 22mm up on the right side. Was able to get it fixed and race the next day though.

BTW Quaker City is a fantastic track.

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How on Earth did that bend it up 22mm? Looks like you barely tapped him.

I put it in the barriers at 60 mph in Vegas last year and the frame was straight as an arrow when we put it on the table. I had a head-on hit at New Castle this year that broke the tie-rod and bent every component on the front end, including a front stub, and it was bent 3mm. 22mm is almost the thickness of the tubing, that would be pretty hard to straighten.

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Dude I have augered into tires, bales, berms, etc.. and had no damage, then I drop a wheel off the edge of the track on a straight and bend the frame so bad the kart won’t roll. It is weird sometimes.

I think it’s because the front right hit the other drivers rear right wheel straight on… All it could go is up. The guy who straightened it was like “this is a lot softer than an OTK” frames 28/30mm so that’s maybe why.

Up in WI this week to visit some family and friends and decided to also haul up the trailer and run some laps at the old stomping grounds in Dousman with the KZ. Happy coincidence that they’re running the same classic configuration I ran there 20+ years ago before they expanded the track, also the first time I’ve been up here since the surface was repaved. Fun times were had, now just hoping the Saturday forecast improves so I can get a little racing in here too.

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Got confused with the suit and thought this was my video.

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I’ll get some video up today, but damn I think I’m being far too gentle on the downshifts. You are zinging that thing. What do you see for RPM down shift wise? I’m trying to stay under 15k. I don’t think the polling rate is fast enough to really capture the spikes so it might be a bit higher than what I’m seeing.

I’m usually seeing low to mid 15k on downshifts, and don’t usually try to go more aggressive than that partially because I know the engine doesn’t love it, but mainly because I already have a hard time getting enough front brake bias a lot of the time so more engine braking isn’t doing me any favors from a brake balance perspective. I’ve seen plenty of people hitting well over 16k on downshifts which seems unnecessary and overkill to me, but it seems like the engine can handle it (usually). Definitely something worth experimenting with.

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I’ll save the punchy downshifts for race day. I’m finding adjusting to front brakes to be the hardest part of learning to drive these. Extra power and speed isn’t to hard to control (lots of time behind the wheel on sprint cars taught throttle control).

I really like stepping out the rears under braking like a single speed. It’s just an easier feel for me to know when I’ve hit the threshold. But the rears are getting punished with the extra power and I know there is more braking performance I’m leaving on the table.
I keep going further and further forward on bias. I’ve yet to really lock the fronts but I keep seeing more and gains with deeper, harder braking.

Motor can handle it until it can’t. Be nice to your con rod.

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Lacking some mid-corner balance. The fronts are really powerful on new rubber. I think I’m over loading the rear as well. I pulled an engine side seat strut for the next session which helped and I think I’m going to chop the axle to 1040 for next week. Maybe a bump of negative camber. Our track is getting quite rough and a small pickup in wind or someone dropping a tire can really ruin the grip from lap to lap.

Also really playing around with lines and gear choice in the infield. I feel like I’m stuck between 3rd and 4th in most corners. Maybe on a proper gripped up day I could carry 4th easier, but it was tough to keep it at the bottom end of the rev range to pull of the corners. 3rd there was too much engine braking and getting on throttle would uspset the kart.

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Ouuuffff that is one hell of an front sensitive boiiii

Seems like you have side bite to run much less caster than you currently have

Gearing seemed to be quite short as well. What are you running now?