Snoopy 49 a tribute....

[AMBJR]

Who’s going to be the first person to remove the governor and test the limit? Maybe @BillyJRacing will spill the beans.

I'll be doing mine when my tuner send's me a new tune!!!

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[Tomster]

I'll be doing mine when my tuner send's me a new tune!!!

After what happened to me, I would be weary about going past 180 in this car for any kind of duration. Apparently they don't use high temp grease in the CV joints. They get hotter than hell and the boot blows up like a balloon, and then pops. You better hope that the axle stays in the joint or you will have an equivalent of a pissed off 900 pound gorilla under your car going to town with a heavy duty pry bar.

 

[16Kobra]

Maybe the limit isn't aero induced. Maybe its something as simple as an engineered limitation.

Today the CV on my right rear let go. The boot burst and all the lube contained within was spewed all over everything.

I had whittled my lap times to 2:00 and it kept getting better, until the CV let go.

I must say that this car was impressive, right up to the point of failure. Maybe ill post a video, but i was running with group 1. This car stood out. Its a shame that the failure of (probably) a $0.50 part had to bring to a conclusion what promosed to be sub 2:00 lap times.

As for the consumables? I had lots of brakes left after a full day. I would say the wear would be right in line with an R. The gas? Running full out, foot on the floor, finishing a 30 min session would be close. Sometimes I made it, other times I cut it a lap short.

All in all, a lot of people were embarrassed today. What they saw on the car blowing by them all was "snoopy 49".....

And then second day you let me pass you.....

 

[Tomster]

And then second day you let me pass you.....

Yea, I felt bad that everyone was blowing by you and I thought I would be a good friend to help boost your self esteem.

 

[16Kobra]

Yea, I felt bad that everyone was blowing by you and I thought I would be a good friend to help boost your self esteem.

 

[Genxer]

Red Baron? My wife loves Snoopy. If she had a Mustang...

 

[kilobravo]

Good news, (I THINK,) Tom.

 

[Tomster]

Good news, (I THINK,) Tom.

No, not really. I'll PM you.

 

[AMBJR]

After what happened to me, I would be weary about going past 180 in this car for any kind of duration. Apparently they don't use high temp grease in the CV joints. They get hotter than hell and the boot blows up like a balloon, and then pops. You better hope that the axle stays in the joint or you will have an equivalent of a pissed off 900 pound gorilla under your car going to town with a heavy duty pry bar.

I plan to go to the Arizona No-Fly Zone IN MAY 2021.

 

[The Chairman]

definitely more, but the issue always is real estate. When I hit 181, it was time to get on the brakes, or else.

I presume you didn’t get to the point of hitting a governor of some sort near 180? Any warnings, etc?
Also: Inner or outer CV joint?
I know you were worried about right rear tire in NASCAR turn 4. So I presume the CV joint heat could be maximized at the same point....
As to solutions:
- Replacing the CV joint/half shaft with a different design,
- Replace the grease with a higher temp variant,
- Ventilate the boot...
— Can you tell if the joint or the boot failed first?
- If the inner joint/boot failed: Wrap the exhaust pipe near the pumpkin.
Just some rambling thoughts at this point....
Sorry it blew your weekend.

 

[Tomster]

I presume you didn’t get to the point of hitting a governor of some sort near 180? Any warnings, etc?
Also: Inner or outer CV joint?
I know you were worried about right rear tire in NASCAR turn 4. So I presume the CV joint heat could be maximized at the same point....
As to solutions:
- Replacing the CV joint/half shaft with a different design,
- Replace the grease with a higher temp variant,
- Ventilate the boot...
— Can you tell if the joint or the boot failed first?
- If the inner joint/boot failed: Wrap the exhaust pipe near the pumpkin.
Just some rambling thoughts at this point....
Sorry it blew your weekend.

Yes, I hit the governor, it would let me get to 181 MPH. No warnings, just what appeared to be a fuel cutoff.

Inner CV joint.

Yes, many years ago I consulted with the Michelin engineers who developed the Cup2. I used their pressure recommendations. Their concern in a roval course is the right rear tire. The enemy is low pressure. That is why you carry more pressure on the right rear, then the right front.

All of those solutions you mention have already been discussed. At this point, Ford built a track car that should have handled these conditions. The car failed. I should not have to go out and buy engineered half shafts for a car that was supposed to have these gremlins worked out. I can't finish a day? Unacceptable. A single day driven as the car was designed to be driven.....

I appreciate your commentary. All points are valid, but Ford counted their beans and decided to skimp on a part of the car that shouldn't have been skipped upon. For most, the car will be fine. It failed for me and I had not reached its potential yet. The car had more in it, but it failed over a few extra dollars in parts.

 

[The Chairman]

Yes, I hit the governor, it would let me get to 181 MPH. No warnings, just what appeared to be a fuel cutoff.

Inner CV joint.

Yes, many years ago I consulted with the Michelin engineers who developed the Cup2. I used their pressure recommendations. Their concern in a roval course is the right rear tire. The enemy is low pressure. That is why you carry more pressure on the right rear, then the right front.

All of those solutions you mention have already been discussed. At this point, Ford built a track car that should have handled these conditions. The car failed. I should not have to go out and buy engineered half shafts for a car that was supposed to have these gremlins worked out. I can't finish a day? Unacceptable. A single day driven as the car was designed to be driven.....

I appreciate your commentary. All points are valid, but Ford counted their beans and decided to skimp on a part of the car that shouldn't have been skipped upon. For most, the car will be fine. It failed for me and I had not reached its potential yet. The car had more in it, but it failed over a few extra dollars in parts.

Thanks for quick responses.
Did you happened to catch your diff temps?
I have run COTA a few days where the ambient was at or near 100 degrees, and the diff temps didn’t alarm me. But if the inner CV joint was overheating, presume the diff would get pretty darn hot too.
Our sessions were 20-25 minutes. 30 minute sessions would be brutal with the heat these cars generate.

BTW: My trunk was so hot after each session, I was more worried about opening and cooling that area than opening the hood... Those exhaust pipes near the diff are wicked hot.

 

[Tomster]

I was monitoring the tire pressures, so no, I didn't catch the diff temp. However if it over temp'd, it would have annunciation the caution.

Things in this car happen at a different rate. Much faster, things come up quicker. Case in point, on the back stretch approaching the bus stop..... it was upon you in a disproportionate amount of time, almost like it caught you by surprise despite the fact you know where it is from years and years of repetition.

I watched the gopro videos again and compared it to what I did on Sunday in the GT350R. It was a totally different experience.

The GT500 was an incredible experience, right up to the time of failure. I believe I have the solution to the issue, thanks to a very well respected engineer.

There aren't many tracks in the country where this would be a problem. I believe Ford engineered the car as such.

 

[AMBJR]

Thanks for quick responses.
Did you happened to catch your diff temps?
I have run COTA a few days where the ambient was at or near 100 degrees, and the diff temps didn’t alarm me. But if the inner CV joint was overheating, presume the diff would get pretty darn hot too.
Our sessions were 20-25 minutes. 30 minute sessions would be brutal with the heat these cars generate.

BTW: My trunk was so hot after each session, I was more worried about opening and cooling that area than opening the hood... Those exhaust pipes near the diff are wicked hot.

Part of the problem I believe is there is too much back pressure in the exhaust system at high RPMs causing HIGH HEAT!!!

 

[Tomster]

Part of the problem I believe is there is too much back pressure in the exhaust system at high RPMs causing HIGH HEAT!!!

No, thats not the problem. Don hit the high point. Cheap ass boot combined with non-high temp grease. An inferior part.......

The CVs should have been over engineered, they were not. My advice to you is if you are going to push the car, you ought to consider upgrading your CV joints

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