XXitanium Posted December 30, 2023 Share Posted December 30, 2023 My wife is watching Gotham Garage (Car Masters, rust to riches) They built a Tesla withe a mega carb'd 383CID. They made a cheezy hole in the hood.... etcetera They ran the drive-shaft inside the car instead of making a tunnel and running it outside. I'm pretty sure they are generally run outside for safety. I've twisted a pinion off the rear end, a long time ago. You don'want a drive shaft flopping around in the interior of a automobile cabin. ....so, here are my questions. 1. What is the operating temperature of a universal joint operating under normal circumstances mounted outside? I think "barely warm to the touch?" 2. Would mounting them inside allow less cooling and make them heat up? (I don't think it would change much) opinions? Quote Link to comment Share on other sites More sharing options...
XXitanium Posted December 30, 2023 Author Share Posted December 30, 2023 I "Googled" it and by the lack of information, I don't think them heating up under normal conditions is a thing. 1 Quote Link to comment Share on other sites More sharing options...
ironmike Posted December 30, 2023 Share Posted December 30, 2023 Don't think operating temps would be too much of an issue, but you're right--safety would be entirely another consideration. I don't know what the current tech rules in any sanctioned competitions are, but I can remember some pretty strict safety measures/standards required of the drive train to include the drive shafts. The guy who bought the modified Tesla was planning to display it in an office setting, so the inherent safety issue may be moot. 1 Quote Link to comment Share on other sites More sharing options...
tomek Posted December 30, 2023 Share Posted December 30, 2023 Temperature of joint should not be an issue, the thing rotates and practically creates its own airflow. So, in grande scale of things it was last item on their list to worry about. 😜5 bucks says battery failed on that particular Tesla, and when they faced 20 grand bill for replacement they said fuck that shit, let's do V8 conversion. 2 Quote Link to comment Share on other sites More sharing options...
blackhawkxx Posted December 30, 2023 Share Posted December 30, 2023 3 hours ago, XXitanium said: My wife is watching Gotham Garage (Car Masters, rust to riches) They built a Tesla withe a mega carb'd 383CID. They made a cheezy hole in the hood.... etcetera They ran the drive-shaft inside the car instead of making a tunnel and running it outside. I'm pretty sure they are generally run outside for safety. I've twisted a pinion off the rear end, a long time ago. You don'want a drive shaft flopping around in the interior of a automobile cabin. ....so, here are my questions. 1. What is the operating temperature of a universal joint operating under normal circumstances mounted outside? I think "barely warm to the touch?" 2. Would mounting them inside allow less cooling and make them heat up? (I don't think it would change much) opinions? That show sounds pretty lame. I tend to stick with Engine Masters, Roadkill Garage, Road Worthy Rescues, etc. I can enjoy some of the restoration shows on MotorTrend but the super high dollar builds don't fit into my reality. 1 Quote Link to comment Share on other sites More sharing options...
The Krypt Keeper Posted December 30, 2023 Share Posted December 30, 2023 internal driveshaft = blender 3 Quote Link to comment Share on other sites More sharing options...
XXitanium Posted December 31, 2023 Author Share Posted December 31, 2023 Yeah, dragsters had special girdles that strapped over the tunnel at one point may decades ago. They looked like fire hose material. ...looks like they're more high tech now. Quote Link to comment Share on other sites More sharing options...
superhawk996 Posted January 3 Share Posted January 3 At least the driveshaft can't hit the ground and catapult the car. Safety hoops are mandated to protect against that, but I don't recall seeing any rule that banned having the driveshaft inside the car. It would still need safety hoops as per the requirements, but it seems like they couldn't disqualify you for it being in the car unless they're allowed to make shit up on the fly when doing the tech inspection. Quote Link to comment Share on other sites More sharing options...
jon haney Posted January 3 Share Posted January 3 12 minutes ago, superhawk996 said: At least the driveshaft can't hit the ground and catapult the car. Safety hoops are mandated to protect against that, but I don't recall seeing any rule that banned having the driveshaft inside the car. It would still need safety hoops as per the requirements, but it seems like they couldn't disqualify you for it being in the car unless they're allowed to make shit up on the fly when doing the tech inspection. If Don Garlits or John Force is doing the inspection, you may not pass. Even with loops, I don't think I would want to try it. Quote Link to comment Share on other sites More sharing options...
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