Front to rear Porpoising
OK, 16,200 GVW, 12,700 on the axles, 3200 on the pin. Trailer wants to porpoise while towing, In other words the rear drops down while the front maintains the same height, causing a up and down moveme...
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Sorry to all for not telling what trailer. It is the HitchHiker, I have replaced the shocks on the truck with Rancho 9000's and am running them on 9, also put air bags on and played with air pressure. Tried a TS3 air hitch, that really made things worse, had to send it back, truck bounced uncontrollable when the air hitch started bouncing. Watching the trailer it appears to bounce/rock front to rear as if the pin weight is too low which wants to bounce the rear of the truck. I have also loaded more weight in the front of the trailer and rear of the truck to try and weight it down to no avail. By the way, water tank is behind the axles so am running it very low. I am at my wits end trying to find a solution, plan to replace the shocks on the trailer with the heavy duty ones that have stiffer valving next. If anyone has a revelation please share.
Almost forgot, trailer sits level but a 2" subframe was added so it would match the height of the truck and give the required bed rail clearance.
Almost forgot, trailer sits level but a 2" subframe was added so it would match the height of the truck and give the required bed rail clearance.
