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Car running again, after a week since it last ran...fixing and finishing things. (I took a video, but have no idea of how to get a video posted, here.)
We actually drove it around the block 3 times! (Also have video...proof of life!)
The first time it has been off the lift it has been sitting on, under its own power, for almost 2 years!
Check out the Carbon Kevlar rear wing: Carbon Kevlar rear wing.
So light, that if you don't bolt it down, it floats around the shop.
At look at the custom chrome moly roll bar we made, in house. It actually attaches to spots on the chassis that are strong...not to the floorpan! Custom chrome moly roll bar.
Yes, we made a master pattern and can make more!
In this application, a 928 manual trans will break sooner rather than later, no matter what you do to it. And as a result, the car is already crippled before turning the key for the first time.
Just bite the bullet and fabricate/install a C7 Z06 manual transmission, it's a superior trans in every way. There's no doubt you can do it - and do it right - and you'll never have to worry about it again. It will match and compliment your monster of an engine.
I tried to convince ptumov to do this for his TT since he was running a manual too. However, last I heard, he was going to install an automatic after his manual failed. Twin Turbo Todd has proven for years now that an auto will work for 1,000 rwhp, so ptumov is headed in the right direction, although without a manual which apparently was his first choice.
I do not know what Tuomo intend to do.
He seems to have lost interest in the car.
Åke
Ok, either I am a slow reader, or, RL logs you out too quickly when reading long threads like this. On old Steam Locomotives there is that very very critical thing called a Sight Glass which gives the Engineer and Fireman a visual que of how much water is in the boiler. Had to smile seeing Kyle make such a change that works, and is simple. In April 1975 I was almost 10 years old, my grandfather was still working for the Boston & Maine Railroad and was the most senior Steam Qualified Engineer on the rosters, so, the honor went to him to 'pilot' re Engineer the American Freedom Train from White River Jct VT to Manchester NH. I went along with him in the Cab for this ride. Ross Roland (the locomotive owner) told my grandfather to "keep going" to Manchester NH as they headed into Franklin NH. You see my grandfather Oliver W Buswell knew this road very well and knew Franklin was the place to stop and take on water for the Tinder. He obeyed and kept going...when we got to Manchester, my grandfather tied up and hopped up to oversee refilling operations of the Tinder, he asked the Fireman inside how much water was in the tank; it was dry! We were some 10 miles away from a locomotive explosion!
Sometimes simple solutions are right in front of us and been in use for a long time. NASA spent millions to develop a pen that writes in space, The Soviets spent nothing, they used Pencils! lol
Ok, either I am a slow reader, or, RL logs you out too quickly when reading long threads like this. On old Steam Locomotives there is that very very critical thing called a Sight Glass which gives the Engineer and Fireman a visual que of how much water is in the boiler. Had to smile seeing Kyle make such a change that works, and is simple. In April 1975 I was almost 10 years old, my grandfather was still working for the Boston & Maine Railroad and was the most senior Steam Qualified Engineer on the rosters, so, the honor went to him to 'pilot' re Engineer the American Freedom Train from White River Jct VT to Manchester NH. I went along with him in the Cab for this ride. Ross Roland (the locomotive owner) told my grandfather to "keep going" to Manchester NH as they headed into Franklin NH. You see my grandfather Oliver W Buswell knew this road very well and knew Franklin was the place to stop and take on water for the Tinder. He obeyed and kept going...when we got to Manchester, my grandfather tied up and hopped up to oversee refilling operations of the Tinder, he asked the Fireman inside how much water was in the tank; it was dry! We were some 10 miles away from a locomotive explosion!
Sometimes simple solutions are right in front of us and been in use for a long time. NASA spent millions to develop a pen that writes in space, The Soviets spent nothing, they used Pencils! lol
From the very first day I saw the first aluminum tank, I've been saying the same thing:
"What are they thinking?"
In the back of my head, I kept hoping that the "first" aluminum tanks were just prototypes and eventually they would provide a "sight glass" of some sort.
Not so much...
Here's a picture of my tank, this AM: Aluminum overflow tank with PTFE sight tube.
That's about 1" below the level, last evening, when the thermostat was open and the fans were on.
From the very first day I saw the first aluminum tank, I've been saying the same thing:
"What are they thinking?"
In the back of my head, I kept hoping that the "first" aluminum tanks were just prototypes and eventually they would provide a "sight glass" of some sort.
Not so much...
Here's a picture of my tank, this AM: Aluminum overflow tank with PTFE sight tube.
That's about 1" below the level, last evening, when the thermostat was open and the fans were on.
Greg,
A very nice detail and an important feature in my opinion. What many folks do not understand is just how critical level in the tank is to correct pressurisation of the system. The stock tank has a volume of two liters and when filled cold should have 1 litre of inventory inside the tank. This leaves an air space of 1 litre- then as the coolant heats up to full working temperature the total inventory volume expands by approx 500cm3 and moves into the tank air space as the path of least resistance- this in turn compresses the air space in a ratio of two to one so pressure goes from 15 psia to 30 psia or a more recognisable 1 barg which is the set pressure of the release cap which wil hold that all day long. In practice the actual pressure will probably be a bit below this depending on where one sets the level in the tank that you will doubtless have figured out- on the stock tank if the level is set along the central flange line- I reckon on 10 psig - the info you provided tells me it is working perfectly- very easy to see the level and if that tube does go opaque with age you can simply pop another one back on.
As for the rest of the beast what can one say that has not been said already!
From the very first day I saw the first aluminum tank, I've been saying the same thing:
"What are they thinking?"
In the back of my head, I kept hoping that the "first" aluminum tanks were just prototypes and eventually they would provide a "sight glass" of some sort.
Not so much...
Here's a picture of my tank, this AM: Aluminum overflow tank with PTFE sight tube.
That's about 1" below the level, last evening, when the thermostat was open and the fans were on.
I have a sight tube on my hydrophore, pressure tank, in the basement - nothing new.
Åke
It's pretty obvious that there is something "missing" with an ABS system that only has one brake line going to the rear, which also has a rear proportioning valve, in line.
When the "American 964 Cup Cars" were built up by Porsche Motorsports USA (from the kits that Porsche sent over) one of the changes was a brake line that eliminated the rear proportioning valve.
It didn't take us very long to give this a try, on my RS America track car.
The rear brake pads went from lasting 3X as long as the front pads to needing replacement at the same time the front pads did.
Stopping distance, on the track, decreased by over 20%...simply by getting the rear brakes more involved in the stopping process.
This, obviously, allowed us to get much deeper into a corner.
Combine that with a higher percentage trailing throttle limited slip (allowing very deep trail braking) and our lap times dropped over 3 seconds a lap, at Willow Springs.
Radical difference!
Just a follow-up thought on ABS, if this is to be a track car.
Standard procedure, if one has a "spin" or "off" is to lock the brakes to retain the trajectory. With ABS, obviously, this is not possible.
I have been told (by 2 VERY expert drivers) that they had a crash that they could have avoided had they been able to lock the wheels.
Many race teams install an "on-off" switch on the steering wheel to address this issue.
@GregBBRD : With respect to the aluminum tank and overflow sight glass did you consider having the curve on the PTFE go the other way? What I mean is, if the fitting on the bottom were rotated 90 deg CW, while the topmost fitting were rotated 90 deg CCW, you'd have the top level of the liquid in a more vertical run of tubing. I don't know how high the liquid gets in the sight glass but I imagine that there's a little bit of a loss of precision if it ends up on the (somewhat) horizontal run. There may also be other issues with routing things that way.
Beautiful stuff. Now that I'm on this side of the country I hope very much that my chances for seeing these beasts have improved.
Just a follow-up thought on ABS, if this is to be a track car.
Standard procedure, if one has a "spin" or "off" is to lock the brakes to retain the trajectory. With ABS, obviously, this is not possible.
I have been told (by 2 VERY expert drivers) that they had a crash that they could have avoided had they been able to lock the wheels.
Many race teams install an "on-off" switch on the steering wheel to address this issue.
Just a thought.
.
The Bosch Motorsports ABS system has such a switch to shut it off, although I'm not sure that I would have the time or the wits to turn it off, while spinning/going off.
@GregBBRD : With respect to the aluminum tank and overflow sight glass did you consider having the curve on the PTFE go the other way? What I mean is, if the fitting on the bottom were rotated 90 deg CW, while the topmost fitting were rotated 90 deg CCW, you'd have the top level of the liquid in a more vertical run of tubing. I don't know how high the liquid gets in the sight glass but I imagine that there's a little bit of a loss of precision if it ends up on the (somewhat) horizontal run. There may also be other issues with routing things that way.
Beautiful stuff. Now that I'm on this side of the country I hope very much that my chances for seeing these beasts have improved.
Cheers
Yes, that way would work, also.
Since I figured I'd run the tank 1/2 full and then it would fill slightly more when it was hot, I wanted my best resolution to be in a vertical place from the bottom.of the tank to the middle of the tank, so I could instantly see if the coolant level was low.
After the halfway point, I'm not sure I need to know exactly where the level is, so that resolution is moot, for me.
03-05-2022, 11:06 PM
