Hi all,
I recently purchased a UL-1 and it ran very nicely out of the box, with two 4200maH 2s batteries. Unfortunately I hit a buoy and damaged the turn fin and rudder. I removed them, straightened them, and remounted them square to the bottom of the hull. Unfortunately now I get a massive amount of chine walk and if I run full speed it will flip. I did review articles here: https://forums.offshoreelectrics.com...fin-adjustment and some others which did not solve the issue. I did look at the race trim guide from the GP1 https://forums.offshoreelectrics.com...-by-Grim-Racer and checked fin, rudder and strut measurements when tuning.
I have tried the following tuning steps with no success:
Adjusting the turn fin up and down. This change in either direction made the boat more unstable. I eventually ordered a new turn fin and replaced it. That didnt help.
Adjusting the rudder angle forward by 5 degrees. This did not help.
Adjusting the strut to run deeper by 2mm. This did not help.
Adding weight to the left sponson tip to keep it in the water. This did help some.
Can anyone offer any ideas about how to get this boat running right again? It is very frustrating.
thanks
Rich
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