Let's say your flywheel comes apart and hurts or kills a bystander. Their family is going to sue the sled owner/operator, the property owner, the pull promoter, and you the tractor owner/driver. Do you have personal liability insurance that specifically covers tractor pulling? If not, 4500 rpm could cost you your house and some jail time. Sure it's worth it?
Re: dc case build in reply to north puller, 10-23-2013 09:55:29
well since they make steel flywheels and clutch components, scatter blankets and tie bars you are really talking nonsense. I would think if 4500 rpms are your goals then you would consider those items part of the build process. Maybe in your little world nobody runs over stock rpm's but personally many tractors run over 3000 and don't come apart because they were built with this figure in mind.
Re: dc case build in reply to gfs, 10-23-2013 10:48:45
I have to agree with gfs I already have a 1030 case that has a 504 engine in it turbocharged that is turning 5500 but it had the proper safety equipment to stand this many I have never fooled with smaller case and didn"t know the precautions I needed to take to do this
Re: dc case build in reply to where does it stop, 10-23-2013 10:02:42
just remember at 1200 rpm's the engine is under the rated rpm's for that engine at 1390 or above a sharp lawyer could exploit that fact, as for multiplying centrifical force doubling the rpm's quadruples it so if the formula holds true at 4500 it would be almost 16 times the force, if anyone wants to discuss the issues I had to overcome building a 4 5/8x6.5 I am always willing to talk but if someone wants to build a spinner please call someone else
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