What‘s the Secret of the hole

[Rick]

I went to my dealer today to ask if my T7 is in sight. Unfortunately no. But he had 2 T7 on site for a cooperation with KEDO. This was my chance to see if the hole on the swingarm of the Concept Bike is still there, as I saw it at a trade show. Yes, it is. Closed with a rubber cap. Does anyone know what this is for?

[deanso]

Weight savings? Yamaha have been trying hard on this bike. Wouldn't be very much, though.

 

[norcal616]

Without seeing the bike in person, it's either a bolt access hole or a byproduct of manufacturer production step such as machining or welding??? 

 

My 2012 wr250f has one...allows access to the dog bone link...

Edited August 11, 2019 by norcal616

[prwatts]

I believe it is to facilitate the casting process. 

[whisperquiet]

The Super Tenere has the rubber plug/casting hole on the inside of

the swing arm.

[qInvention]

To me, it seems that @prwatts is right.

 

Doesn't give access to anything, but the swing is hollow and you can't allow water and debries to enter.

 

I used mine, as did others too, to route the chain oiler hose through it.