- 22
- 19 923
Red Baron LSR
United States
Registrace 22. 08. 2020
The Red Baron land speed racing motorcycle is a supercharged 350-cc Moto Morini that holds records in several competition classes at El Mirage Dry Lake, Bonneville Salt Flats, and several airport venues across the Southwest US. The Red Baron LSR team shares race updates and racing-related engineering considerations.
Cylinder head valves leak test with gasoline
Smitty walks through the supplies and process to test the cylinder head and valves for leaking using gasoline after lapping them by hand. Tips for test accuracy and safety are included. Make sure to be safe with gasoline!
Why this method?
Testing the valves with gasoline (rather than using a compression test) ensures that you know it really is the valves that are leaking, not the piston rings which could also be a source of compression loss. This method tests each valve individually with the cylinder heads removed, so it is not as quick as a compression test.
The Red Baron valves are tested with this method at the end of each race season and after any valve lapping. Compression tests with a stethoscope are used after each race to check general sealing of the valves and piston rings.
Test Results Spoiler Alert:
The exhaust valve passed the test. The intake valve failed the test almost immediately. Turns out, the valve and seat still had residual lapping compound on them that wasn’t fully wiped off which resulted in immediate leakage. The intake valve passed the test after being thoroughly cleaned and tested again!
Why this method?
Testing the valves with gasoline (rather than using a compression test) ensures that you know it really is the valves that are leaking, not the piston rings which could also be a source of compression loss. This method tests each valve individually with the cylinder heads removed, so it is not as quick as a compression test.
The Red Baron valves are tested with this method at the end of each race season and after any valve lapping. Compression tests with a stethoscope are used after each race to check general sealing of the valves and piston rings.
Test Results Spoiler Alert:
The exhaust valve passed the test. The intake valve failed the test almost immediately. Turns out, the valve and seat still had residual lapping compound on them that wasn’t fully wiped off which resulted in immediate leakage. The intake valve passed the test after being thoroughly cleaned and tested again!
zhlédnutí: 1 702
Video
Hand Lapping Valves & Valve Seats
zhlédnutí 533Před 2 lety
Smitty shows the process and techniques for hand-lapping valves and valve seats, including close-up inspections of the sealing surfaces.
El Mirage: Nov. 2021 Record Run for The Red Baron
zhlédnutí 183Před 2 lety
The final race of the 2021 season at El Mirage was another successful one. The Red Baron set a new record at 108.645 mph, besting its previous record of 108.476 mph set in May 2018. Thank you to the SCTA volunteers for a great season!
Rookie Run for Amy at El Mirage - June 2021
zhlédnutí 144Před 3 lety
After 7 years as a crew chief, Amy rode The Red Baron through several rookie passes at El Mirage! The engine was still 'green' after a rebuild, so the boost pressure and RPM were limited for the 99 MPH pass.
Supplies for Hand Lapping Valves & Valves Seats
zhlédnutí 911Před 3 lety
After prepping the valves and valve seats individually, Smitty discusses the process for lapping them together and the supplies you'll need to get a crisp contact area.
Grinding vs. Cutting: Creating Valve Seat Angles
zhlédnutí 5KPřed 3 lety
Smitty walks through the basic hardware options for creating a valve seat angle, one of the critical steps in the overall valve job process, and also highlights the pros and cons of grinding with a stone versus cutting with a blade. This is "part 1" of the process. Regardless of whether you choose to use a stone or blade, "part 2" is always lapping.
Start-up at El Mirage
zhlédnutí 71Před 3 lety
(July 2016) The Red Baron is started by spinning up the rear wheel using an external starting motor. This is 'Version 1' of the starting motor, which sits directly behind the motorcycle. Engine oil pressure is generated by back-driving the transmission while the bike is in 3rd gear. Then Smitty engages the ignition to start The Red Baron, vroom! More at red-baron-racing.com
Instrumentation explained for supercharged land speed racing Moto Morini
zhlédnutí 224Před 3 lety
Amy introduces the instrumentation on The Red Baron and narrates the 123.310 MPH record-run at El Mirage in July 2017. The instruments (and their units) are: 1. Oil pressure (psi) 2. Intake manifold temperature (deg-F) 3. Cylinder head temperatures, CHTs, front and rear (deg-F) 4. Air/Fuel Ratio 5. Manifold pressures, pre- and post- supercharger (inHg) 6. Tachometer (RPM x100) 7. Speedometer (m...
Walk-around: Power Testing at El Mirage Dry Lake
zhlédnutí 109Před 3 lety
The Red Baron is warming up on the power absorber test stand. You can see the supercharger belt spinning and hear the supercharger roll at idle. The rear wheel (no tire) and dual-caliper brake assembly are designed to capture torque and horsepower data. Cooling fans direct air to keep the engine cool as well as the brake assembly that is absorbing The Red Baron power.
Record Run at Bonneville Speed Week 2019
zhlédnutí 129Před 3 lety
Smitty completes the second record run at Bonneville to cement the new record for the 350cc M-PBF competition class. The run wasn't perfect, but it still bumped the record by 30 MPH!
Power Testing at El Mirage Dry Lake
zhlédnutí 251Před 3 lety
Smitty and Amy took The Red Baron to El Mirage in May 2019, hooked up to the power absorber, to test the engine performance in the heat and at the altitude of the dry lakebed. Listen to the supercharger role and follow along with video captions to explain how the instrumentation readouts are converted into power and torque estimations.
El Mirage Record Run May 2018: 108.476 mph
zhlédnutí 80Před 3 lety
Smitty achieves his second land speed record with the "Mighty Morini" at 108.476 MPH. The Mighty Morini is the alternative name of The Red Baron that is used when running open, without the bright red aerodynamic fairing and fenders. It's great to see the horizon! More at red-baron-racing.com
The Red Baron Land Speed Record Run: 123.310 mph (El Mirage, July 2017)
zhlédnutí 254Před 3 lety
Smitty & The Red Baron achieve their first record at El Mirage Dry Lake in July 2017. The Red Baron set the new record speed in the 350cc MPS-PBG competition class at 123.310 MPH. Read more about The Red Baron at red-baron-racing.com
Multi-Angle Valve Job for High Performance
zhlédnutí 6KPřed 3 lety
Smitty describes the aerodynamic benefits of multi-angle valve jobs, increasing airflow and therefore horsepower by simply "knockin' off some corners."
Exhaust Valves: Innovations during World War II
zhlédnutí 288Před 4 lety
Exhaust Valves: Innovations during World War II
Power Limitations of Internal Combustion Engines
zhlédnutí 539Před 4 lety
Power Limitations of Internal Combustion Engines
Intake & Exhaust Valve Materials & Trade-offs
zhlédnutí 950Před 4 lety
Intake & Exhaust Valve Materials & Trade-offs
Form & Function of the poppet (mushroom or tulip) valves for internal combustion engines
zhlédnutí 592Před 4 lety
Form & Function of the poppet (mushroom or tulip) valves for internal combustion engines
Purpose of Valves in Internal Combustion Engines Simply Explained
zhlédnutí 149Před 4 lety
Purpose of Valves in Internal Combustion Engines Simply Explained
Introducing Turn 4 Academy: Questionable Engineering Advice
zhlédnutí 249Před 4 lety
Introducing Turn 4 Academy: Questionable Engineering Advice
This was amazing information that I have never heard anyone ever say before! Thanks for posting this video!
I love that i found this channel, it's so hard to find people that actually know the logic behind performance. Thank you 🙏💯
I'm considering a set of the Newway cutters. Question, if I wanted to use my drill press, what would be a good speed setting.
Tricky question. It depends on the cutter and the material. It's probably going to be on the slower side, well under 50 rpm, and may take a bit of testing to determine if you can get a slow enough spin to avoid chatter.
@@redbaronlsr2107b ok thanks,as it is right now 200 rpm is the slowest I've got. Think of maybe a speed controller would work. Don't know for. But hey thanks. Good video
Not to much back cut on exaust valve, it can cause inversion.
How about an interferance angle. 1 degree difference between valve sealing seat and seat? Get a better seal.
Interesting idea! This sounds like it would reduce the concentric contact area between the valve and seat. That contact area is a critical thermal path, especially for the exhaust valve, so the valve could run hot. It may be pounded into submission to match the angle of the seat over time.
just got the multi angle job done looking forward to try it out
My 283 has a 3 angle valve job ❤
What happened to this channel? It disappeared and it would of taken off
We are still here! Been developing the race bike lately, working on some new videos soon. Appreciate the interest for more 👍
😮
That makes me wonder if the OEM “tumble” helps atomization in a stock application where they are more concerned with emissions than performance.
What makes for good performance with valves usually makes for good fuel economy too. It’s just cheaper to machine oem stuff the way they do
Well said. The tumble and atomization create a good mixture that achieves a faster burn rate (good for performance & efficiency). The biggest factor for us, as a supercharged engine, is getting maximum flow rate through the valves.
Good info I have an aprilia rsv4 engine that just dropped a valve, and I found that the intake valves are titanium and cost 350$ each.... :/ aauuggghhh )
respect
While you covered the 15 degree incremental changes in angle to maintain laminar flow over the valve seat and face, you didn’t mention that the 15 degree changes in angle function to provide vaporization ridges, to provide additional fuel - air atomization, and is why radius cuts are not typically used. It’s always left me going huh?, for how much OEM’s leave on the table, for lack of attention to details, for gains in reduced emissions, increased mileage, as well as performance.
That's a nice addition! It's a "Goldilocks challenge" to have good turbulence for atomization, but not so much turbulence that the flow into the cylinder is compromised.
This is good stuff right here
Though i dont disagree with what u are teaching & that is how a properly tuned & functioning engine will operate there are conditions when poorly tuned engine that may experience conditions of a lean fuel mixter that can bring combustion temps way up that will heat the intake valve far beyond its intended design.
Totally agree with your point. Going lean will certainly increase operating temperatures, to the risk of melting the weakest link components.
I like this! Is there more were this came from?
Thanks for the encouragement! We have a few ideas for the next set of videos... Been working on our motorcycle lately.
LOL!! Thanks!
What width would you recommend for the 45° ? IE: 2mm or 4mm? Enjoy you videos Sir
I hope it's correct to assume the *contact* width between the valve and seat. The contact width would be relative to the size of the valve, approx. 1/3 to 1/2 of the valve face, depending on whether it's intake or exhaust. There's more info in our "Specifications for Sealing Valves in an Internal Combustion Engine" video. As an example, you can also see our exhaust valve contact width near the end of our "Hand Lapping Valves & Valve Seats" video. Thanks for the question!
Me va a tomar un tiempo traducir el video, pero parece ser una buena información. Saludos desde ARGENTINA.
Thank you a ton
Super video. Mater of fact i have stonegrinding gear from waterbury hall , tryng to find any information, how to use it prperly, but its not easy to find information about that old school methods. Do you have any suggestions for a useful source of information? Thakn you,
I had to do some googling about the stone grinding gear for a Waterbury Hall! Sorry, I don't have any information, but my suggestion would be to contact a vintage engine shop that may have some leads. Good luck!
Useful information.
Interesting, I have always done the seat, doing the face can be very tricky
Agreed. To be more specific, the *seats* may have 3+ angles, but valve face is usually 2 angles, one being the angle of the valve face contact area, and the second being the backcut angle up to the stem. There's some good pictures and data at johnmaherracing.com/tech-talk/3-angle-valve-job/
Excellent video
Thank you!
I’m already imagining the trouble I’m going to have with a 32v engine so I am very interested in the next video
Just found you. Subscribed and I’m thinkin about it. Replacing exhaust valve seats at home that is.
Go for it! Would be happy to chat if you come across questions or ideas.
Very Nice tuitorial...Waiting for part 2 to see the gasoline test in the ports..Could you address testing with a vacuum versus gasoline in the ports...Thanks
Thanks for the suggestion! We missed that piece of information in the new video recording, but added a note about it in the description.
Thank you for this tuitorial..very enlightening...
Thank you for the positive feedback. Glad it's useful!
very nice tuitorial...thank you
David Vizard would be proud. nicely explained & these efforts are much appreciated.
Really great video on instruments for a speed record run
Thanks!!
I just LOVE the emoji, 600 degrees is Hot !
Keep the speed going. We are made to be excited! Not to be stuck on a screen all day. Im an el mirage guy and i spend most of my time way in the hills and trails. But seeing people do outrageous speed runs is pretty sick while im out there crawling around. Your setup is pretty cool, i can actually look at it and kinda understand it! (I dig that) anyway ima subscribe and i look forward to seeing you guys reach new speeds for yourself!