Getting ready for next season.
Championships are won in the offsets on they say. Well, we do not take that lightly. So the car has been stripped down and is getting the frame sandblasted today.
And every piece of the car is being gone through, inspected and either refurbished or replaced. Every moving part is being triple-checked and lubricated.
We start the year with 2 car shows in which we took first place last year and hope to repeat. Then race season starts in April
So what kind of Pumpkin is that? Ain't no Ford 9", Dana 60 or GM xx bolt and Halloween is over. Good luck with next year's racing season!
That is a quick change. The front yoke has a shaft that runs to the rear of the assembly where there are 2 spur cut gears
You simply take the back cover off with 10 nuts. Just slide the gears off and slide the new ones on.
Ours has a base ring and pinion in the rearend of 4.56 so then you just go to this chart and find what gear you want after the spur gears are put in.
That way you can adjust the gear for each track or changing track conditions .
Our final gear ratio for a 3/8 dirt track is between a 5.83- 6.20 on most days. and that puts our rpm at the end of the straight away ~ 7200
Now that I see the other side it reminds me of the rear ends on F1 cars of the 60's. Thanks!
Here are some videos of the way we make it all work back there to make the rear axle steer around the corner
https://steemit.com/cars/@doomsdaychassis/dirt-track-suspension-videos-crazy-suspension-travel-and-racing-videos
On that first video you can really see how that U joint takes an extreme angle off throttle, that thing has to be running near it's limits. Under a full load the drive line angles straighten out nicely. Thanks again, that was some great footage!
When we run the squishy pull bar we run 10 degrees of static pinion angle. When we have to run a solid pull bar in some classes we knock it down to 5 degrees of pinion angle.
That is exactly the same tech. Maybe modified slightly from then but pretty much the same. Not a problem at all. I love talking cars.
this is what they look like from the rear.
Looks like you guys are moving along pretty good. Is your team getting the frame powder coated after it is blasted ?
We have it sandblasted then bring it back to the shop and check it over for cracks or anything that needs to be welded or fixed then we send it to our sponsor and they paint it for us. We don't really like powder coating because when it gets old looking at the end of the year and we take it to get sandblasted the sandblasters charge an arm and a leg to blast off powder coating because it is so stuck on there.
Why are you sandblasting the frame? Optical reason?
We do it every year. Sandblast it, check for cracks or damage and fix it, send it to paint so it looks good for the car shows at the start of the year. You can find hairline cracks after sandblasting because after it sits for 2 or 3 days the cracks will form rust lines but the sandblasted surfaces do not rust.
Thats good to know. We once had a crack in the motorcycle frame in the world championship.
All the drivers had a bad feeling about the chassis but we did not know why. We tried everything. At the end we disassembled everything and found the small crack.
Hat to build a completely new bike overnight xD
Yep, it is super important.
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