2015 AR240 Wakeboard Rack Clamp

[Decafe]

Couple questions for those not using Yamaha racks and clamps:

1.) Which tower tube are you installing your racks on, the front larger diameter tube or the rear smaller tube?
2.) What is the exact size of these tubes so I know what size clamp and rubber insert to get?

I bought some black Indy racks that came with a 2.5" clamp with a 2.25" and 2" rubber insert to mount on the rear tube. They look like they would work perfect, but slip too easily. Not sure whether I should go for a smaller clamp or larger insert. I've contacted the dealer and Yamaha...yet to received an answer to my question regarding exact size/diameter of these 2015 AR240 tower tubes.

 

[Williamsone46]

1 7/8"

 

[greg]

I have 2 racks on the forward larger tube on each side. Which is 2 3/8" and the rear tube are 2" on 15 240.

 

[Williamsone46]

I have 2 racks on the forward larger tube on each side. Which is 2 3/8" and the rear tube are 2" on 15 240.

The forward bar is 2 3/8" like you said, but the rear tube is 1 7/8" on the AR240.

 

[Decafe]

Thanks for the confirmation. Yamaha also called back confirming the rear tube is 48mm (1.88in or 1 7/8), the forward tube is 60mm. Looks like I need to clamp to the larger tube with a smaller rubber insert or get a smaller clamp for the smaller rear tube. Seems like a larger rubber insert with a 2.5" clamp could get sloppy after while on the rear tube. Personally I think mounting to the rear tube once the wakeboards are inserted just looks nicer.

 

[Kennc]

I also have an Indy rack on my 240. What I did was cut a piece of one rubber insert to go over the other rubber insert. Basically added a mini layer.

I mounted on rear tube and works fine.

About a 3" piece and I "bridged" the other insert. Kinda hard to explain.

Been like that all season. Almost 50 hours, no slipping or other issues.

 

[greg]

I bought a set of inserts. I wanted to use the 2-3/8 bars as one of my racks are made for 2 3/8 and the other was 2.5 and didn't want that huge rubber piece as a insert down to 1 7/8.

http://www.krypt-towers.com/collar-spacing-inserts-for-tower-speaker-clamps-and-tower-rack-clamps/

 

[Decafe]

Thanks for the info.