Ride pads on UL-1 (again!)

[Pete B.]

I know this topic has been discused many times, but just so I have it down right!
Ride pads should make a noticable difference
.40 ABS should be good
Pad should extent past the end of the sponson about 1/16"

I'll assume the pad should go foward to the step in the front of the sponson and form fit the angles?
The boat is the Kunz UL-1 or BBY (sorry Randy)
If any one has pictures of the pads I would love to see them just to be sure. Any comments or recomendations are appreciated.
By the way has anyone who uses the 1/4" push rod for a stuffing tube w/ the homade drive shaft had to make a strut to hold the aft end of the tube? Mine seemes to want to flex and that is with out power yet.

Pete B

[AndyKunz]

Ride pad should be made from .090 - .125" material - like 1/8" birch ply. It should be tapered in a straight line so that at the back it is full thickness and at the from blends smoothly into the step.

Did you put the skeg between the stuffing box and the hull? It's very important.

Andy

[Pete B.]

I don't recall reading about the skeg what is that?

Pete

[AndyKunz]

Step 12 of the manual, on page 9.

Andy

[Pete B.]

Is that where you use scrap ply to fill areas between the hull and stuffing tube, if so I have it supported on the inside. Does this refer to doing it on the outside?

Thanks Pete

[AndyKunz]

Yes, the inside & outside. Sorry if that wasn't clear.

An unsupported drivetrain is impossible to dial in.

Andy

[Drobie]

Originally posted by AndyKunz
An unsupported drivetrain is impossible to dial in.

Andy

What adjustments are available to "dial in" a firmly attached and supported straight-shaft drivetrain?

[Pete B.]

Thanks again Andy
Pete

[Pete B.]

With the 1157 package the stuffing tube did not need the support outside the hull. This will be an easy fix.

Pete

[AndyKunz]

Originally posted by Doug Robichaud
What adjustments are available to "dial in" a firmly attached and supported straight-shaft drivetrain?

CG, prop, ride pads - nothing can overcome a prop that changes position constantly. THis is why you need to tie sponsons, motor, and transom together in the hulls you build. A solid chassis is essential for any performance vehicle.

Andy

[Bill Sellers]

Originally posted by AndyKunz

nothing can overcome a prop that changes position constantly.

Do you think that a strut supported prop turned by a flexible shaft is fixed enough for high performance? Likewise, how about a straight shaft/stuffing tube drive train that is firmly supported?

Bill

[AndyKunz]

Yes to both.

"Supported" would have to mean "supported at the prop." What prompted his question was that the support point as 4" away from the prop. That is not "support."

Andy