BAWC Forums

Had another event today. She really is starting to push the kart. First video is her best run. Second video is ones where she found the limit. Love both of them.
https://youtube.com/shorts/oY-tRXOYqbQ?feature=shared

https://youtube.com/shorts/ILY6zuClSe4?feature=shared

Coop

I think I’m gonna put the 2 stroke back on. She looses so much time not taking off and leaving corner speed.


Coop

Motor swap incoming!!!!


Coop

This thing fought me all day. ALL DAY.

First I had to take the fuel tank out of the other kart. Thought it was just undoing the steering supports. Nope.

Drop the floor pan. Those bolts get hit and ground and thus make them hard to get off and back on.

Got it off. Go to put it on but had to clean it out.

Dried 2 stroke

Then this hose was hard as a rock and the filter at the bottom in pieces.

And of course the replacement hose is curved. And thus I had to pin it flat and heat it. And make it so it doesn’t just curve up. Also the filter wouldn’t go in so I had to put the hose in and put the fill hole and had to attach it.

Then it didn’t want to fit like the other after I got the floor pan off the main kart. It was just little issue after little issue after little issue.

Installed

Needed to wire up a kill switch but hate cutting wires. I had this elaborate plan….jeff talked some sense lol. This worked great.


But SHES ALIVE!!!!
https://youtube.com/shorts/1QxrP5PnH1k? ... Ih1dURfBIl

I need a keyway to mount the gear and tire and it should be good to test!

Coop

Also I couldn’t even attach the throttle cable. It had some odd throttle cable. My other kt100 had the one I needed though. It really was just one thing after another and I’m still not actually done.


Coop

Got a little seat time, and by that I mean 15 mins. It was a little hectic. First, I forgot the air pump for the tires. So I had to go buy an air chuck as where I was had a compressor and but no air chuck.

Then I wanted to try my drill attachment…..it broke the bolt….so I need a better bolt if I’m gonna do that.

But after it all got started she did well. It takes off so much better than her motor and prob went faster today than her other engine ever did. Not that the other engine isn’t capable…it’s just weak.

I do think I have a 12 or 13 sprocket on the engine. I do wanna swap that out for the 9 sprocket. Give the kart its best take off, given the 4 cycle ones have more torque down low and this two stroke needs to be higher RPM.

Also working with a guy on reddit that has designed something that hooks to my insta360 to log mph, rpm, path of the course, and other things. It Bluetooth links auto starts the recording, I can overlay the info in her video. He wanted to do it for autocross. Given they are always different, and you can walk the course, I mark the start, and the end…then it does the rest. Should be interesting.

Saturday is her next event. But here are pictures from last event.






Coop

Nice

Went racing. First time out the gate…she gets almost strait…lets the motor eat….it spun around so quick and almost hit the timing trailer!!

They gave her a pass and she still got her 8 runs. It was idling. It didn’t want to. So instead of doing what I should I started turning it leaner.

Her 3rd run was amazing. Then it started to not run right. I accused her of not wanting to go fast. It wasn’t her. It was me. I should have made it richer. Not leaner. I’m super mad at myself. That kart was ready to scream!!!!

The local that runs these engines on dirt is giving me an already tuned carb, just bolt it on and leave it alone. It’s bigger too. So it’s gonna be even more scary.

Anyways. Last meet she was :40 second from the leader. This week she was :35…with issues and the runs she got with power she was just feeling out the course. Soooo hopefully it’s all good. Next month.


Coop

Alright. Gonna have a lot of out with the old and in the new. First up is carb, I had a small one. Found a bad ass local guy that sets up other people’s cars. Has a big one, already tuned. Took my car to him today. Wish I would have taken my daughter as he was able to just use the local dirt circle track because….thats what he needs when setting up, would have let her take her kart on it.




New
https://youtube.com/shorts/QWAqRbqaRFM? ... rj2B-JioiC

Man it sounds good!!!

Next will be chain. Already have the chain. Was trying to put it on tonight but ran into a problem with my own tensioner. So I will finish tomorrow.


His work area. The cabinet on the right has a good 30 engines in it. lol.


Coop

Also on out with the old….mychron4

I’m sure it’s amazing when it’s an actual track. But autocross isn’t that. It doesn’t have the system to turn it on and off. I’ve been using it for rpm basically and even then it didn’t log 4 stroke rpm.

The new.

This guy on reddit makes these but again for tracks. I talked to him and was like, what about autocross? He liked the idea so he made me one. I make the start and end point. It maps where the kart goes, logs mph, rpm, lots of other stuff. It also starts and stops my insta360 and only records the laps. I’ve been geeking out on it. Here it is just sitting my car when leaving my house.


I’m sure there will be a learning curve but I’m stupid excited to be able to have actual data saying you were this fast here, slowed down to this, then took the turn.

That will also go on hopefully this week.


Coop

Would this work in a car as well? this is cool as fuck

tabasco122 wrote: ↑Wed Aug 19, 2026 7:18 am Would this work in a car as well? this is cool as fuck

Yes. Yes it would. Without a start and finish it wouldn’t work for lap time. But it would do everything else. It is bad ass.


Coop

New chain installed


Data logger installed


And it running.
https://youtu.be/8fhfChHqC6k?feature=shared


Coop

Went out around the subdivision today. Tried to set a course. I don’t think it really matters as even if it just records it I can go in the website and take a way and add. Only thing I don’t get is lap time.

Issues. Every file has same date and time so I don’t know which is which when trying to do things. Kind of annoying.


It also lost two nuts. They need to have a little longer bolt. It’s all good but just another …kind of annoying.


Then I don’t know what happens when I get something like this.


Now it also did start my insta but didn’t end it and restart it each lap like I thought it was suppose to. But I was also having issue with it realizing when there was new laps. So that kind of why I think I will do circuit and just let it get all the info. I don’t lose anything from what I’m doing now. Now I have tons of video, which I would rather have…so while it’s not doing everything how he said it would. It does get everything he said it does. Just not as seamless….and I’m okay with that. I can work around it.


Coop

Went and tested today. Man I had high hopes. Since last time it ran I had.
New carb and tuned by someone who knows them.
Data logger
Wider rear tires
Seat isolators

Well, kart wouldn’t run right. Data logger didn’t show gps. She still spun out doing a whopping 3.5mph. But she did like the seat isolators.

Wider tires

Still crashed.

Here is the data logger. You can see the rpm’s rev fine when it starts but will not get going.

Here is the video of the crash. You can hear it not running right and just hit the curb. She wasn’t going fast enough for it to do that.


https://youtube.com/shorts/AEFeXxq-MxI?feature=shared

Here is the video of it not running right…even lifted up the rear end and it wouldn’t do it.
https://youtube.com/shorts/vbN4Xyv69P8? ... JR-MGEWoUq

To say I left defeated is an understatement.


Coop

Coop

I see I’m not surprising enough anymore. Here you go.


SHIFTER KART!!!!!

I don’t know what this means but I like it.
https://imgur.com/a/Hdn5LAb#hgLCPcr

So this kart has been sitting a while. He couldn’t get anything to turn. The brake master was locked up. When I got home I cracked the valves and bam, it turned. But with all the brakes locked up I couldn’t even turn the engine to see if it had compression. But it does have compression. It doesn’t have spark. He had it in a homemade trailer that started leaking. So I think some of the points got a little rusted.

Anyways last year my oldest and I built a motor. This year we will go through this kart. I will get her some pedal extenders and she will drive this hopefully next year. It will just be in 1st. She can’t even pull the shifter lever. lol.


Coop

More info on the kart. From online.

Engine is TM K9, 2001 homologation 25:1 Elf 909 or Motul Chassis is a bit newer than the engine, tag on the back rail will give you more info PVL 1419 stator, 945 flywheel and a PVL analog coil is the factory option 400ml ATF oil for the gearbox It's difficult to get a spark whilst on the stand, check electrical connections/coil plug and make sure the kill switch cable is not grounded


Coop

Got it running off starter fluid. It needs a new tank, hoses, and a couple things cleaned in the system. But other than that, exterior stuff is cleaned and wiped down.


Coop

Alright. Bella’s kart is back on the smaller tires…I don’t think I could get the geometry I needed with the big tires.

I drilled the hole for a brake back up. Don’t know why they need it but they say I do.

I also ordered two gas tanks for the shifter kart and other kart that I want to sell.

Gonna take the spare kt100 to work and make sure it’s ready to run.

The autocross group is have a Saturday and Sunday event. Saturday is a fundraiser and they arnt allowing kid karts. But I did get invite to an after event just fun run. It will be great to practice. To play with tire pressures, distances, get some laps in. But I want another engine ready to go.

Coop