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1. Chrisperkins73🇬🇧

   Able Seaman·1 year ago

   Hi,
   Stunning model, if you still have it would you consider selling it at all?
   Chris
2. gcladd🇨🇦

   Warrant Officer·4 years ago

   John:
   
   I recall that I had a similar problem to yours using the Graupner stock motors. Forgot this when I wrote the original post. I have a pair of Kyosho Lemans AP29's that I bought way back when to get it to ride on plane. These motor have a noload rpm of 16000.
   
   I would play with motors/prop diameters before attempting to rip out drivelines.
   
   I will have to put the Kyosho's back in the model and take it for a run on a weekday when there is no one else around that the speed or wake would bother on the pond.
3. JOHN🇬🇧

   Midshipman·4 years ago

   hi there, I don't know what went wrong with my posting - but - anyhow, I built this model a few year ago of the original version of Virgin Atlantic Challenger - the one that sank. I had a similar motor setup to what you have in your model and it would never plane properly. I believe the problem to be where the prop tubes exit the hull; behind the last step; there is a build up of vacuum created by the props. This stalls the boat. It makes the boat underperform. In some future time, I intend to remove the prop shafts from my model and move them further back and also to make the prop tube angle slightly steeper to give the props more clearance from the back end.