Rear axle blanket/diaper required on all TF starting at Charlotte? (12 Viewers)

Why wouldn't it be possible to have a lubricant that is not so thick? Just for yuks & grins, the motor oil we run in our daily drivers is a lot thinner than we usta use back in the '60's, as an example, but works great.
 
Cliff said:
Why wouldn't it be possible to have a lubricant that is not so thick? Just for yuks & grins, the motor oil we run in our daily drivers is a lot thinner than we usta use back in the '60's, as an example, but works great.
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It’s not as great as you think. Plus, the engines are built way different than they used to be, and the manufacturers have mileage requirements they have to try to meet. Engines don’t last nearly as long as they used to.

These rear ends go though a tremendous amount of shock. Before the issues, a ring and pinion still didn’t last much more than 50 runs. Now they are seeing much less than that. Using a thinner/less slick gear oil will only make things worse. Much worse.
 
Ponyhntr said:
It’s not as great as you think. Plus, the engines are built way different than they used to be, and the manufacturers have mileage requirements they have to try to meet. Engines don’t last nearly as long as they used to.

These rear ends go though a tremendous amount of shock. Before the issues, a ring and pinion still didn’t last much more than 50 runs. Now they are seeing much less than that. Using a thinner/less slick gear oil will only make things worse. Much worse.
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More horsepower will solve all problems
 
Ponyhntr said:
It’s not as great as you think. Plus, the engines are built way different than they used to be, and the manufacturers have mileage requirements they have to try to meet. Engines don’t last nearly as long as they used to.

These rear ends go though a tremendous amount of shock. Before the issues, a ring and pinion still didn’t last much more than 50 runs. Now they are seeing much less than that. Using a thinner/less slick gear oil will only make things worse. Much worse.
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What engines don’t last as long as they used? Are you talking OEM?
Today’s automotive engines are precision machined, hence the need for 0-20w oils, not straight 30 or 40 weight in the older engines.
You must not remember when 50k miles was a major accomplishment. But, you were living on borrowed time.
150k is not unusual these days.
 
Flicka said:
More horsepower will solve all problems
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I sense sarcasm , many will disagree, but I think a lot of spectators would say, more horsepower the last 5 years or more , has done more damage than good to the drag racing experience , in person anyway. A 2 hour delay in the show is a hard sell to a sponsor or attendee for any reason. I'm not trying to blame anybody, BTW , we all want National Events to be successful.
 
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T.Smith said:
There's already blankets around the Strange rear-ends, however these are not diapers. They are to keep you from getting slapped upside the head with a piece of ring gear...although some of you could use it...but that's another story.

I think it would be a push to get a blanket developed by Charlotte for a Chrisman rear-end. I think figuring out what happened first would be a good start.

Meanwhile, for those of you who clammer for the old days, you can reminisce by watching the oil sweeping truck drag up and down the track for two-hours.
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On those lines, I remember being at Pomona one year and there were so many oil downs they ran out of Rice Hull Ash! We had to wait for them to go somewhere to pick up more. And yes, dump it on the track, guys on the back of pickups with large push brooms, feet on the broom handles to apply pressure. Brutal..
 
Gear oil needs to cling or stick to the gears or it would be completely metal on metal. As the ring and pinion are rotating the gears are trying to force the lubricant out.
 
was posted today on nhraracer.com.
These amendments include the following changes…See the latest amendments document for complete details.
Section 19, Top Fuel, Drivetrain: 2, Rear End, Page 7 – Rear end blanket requirements updated
here is the actual verbage
An NHRA Accepted rear center section containment system is required on
Strange L7400 and L7200, and all Chrisman (Chrisman requirement starts May
13th, 2026) rear ends. Currently Accepted containment systems: DRE (ISMP-
750 bag with CMH-250 cover), Taylor REB and NitroSew NP 9310. Additional
measures can be taken by the team to aid in containment, NHRA reserves the
right to deny any additional measure taken
 
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here is a question. is it logical to assume that the new rule now covering chrisman rear ends,
is a result of the nhra and team members determining that there was nothing wrong with the chassis and/or other
alignment or stress points? and the cause of the back to back failures last weekend is not fully understood, now resulting
in this rule revision?
tethers, restraints, blankets, belly pans, titanium shields.
 
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mick said:
here is a question. is it logical to assume that the new rule now covering chrisman rear ends,
is a result of the nhra and team members determining that there was nothing wrong with the chassis and/or other
alignment or stress points? and the cause of the back to back failures last weekend is not fully understood, now resulting
in this rule revision?
tethers, restraints, blankets, belly pans, titanium shields. blow it up and win or lose trying, and hopefully safely.
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Yes, I would agree. Probably the path of least resistance - mandate it to just be safe.
 
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