Hagasan adapter and s2000 steering wheel

[S2G-Unit]

I just want to confirm you guys are having to drill the back of the s2000 steering wheel to allow Hagasan's adapter to fit.
It seems to be mentioned here along with this picture:

http://www.nsxprime.com/forum/showthread.php/137183-S2000-RSX-Steering-Wheel-Adaptors

"You can see that it has a large hole either side of the shaft. This is a tapered cast “draw” of about 10.5-11mm. It is very easy to lightly drill this out to a uniform 12mm diameter and a depth of 14mm. What I did was use these two holes as the drive points to take care of the rotational force of turning the wheel independent of applying this force through the four long bolts….This force is then applied through to the hub."

 

[Hagasan]

I just want to confirm you guys are having to drill the back of the s2000 steering wheel to allow Hagasan's adapter to fit.
It seems to be mentioned here along with this picture:

http://www.nsxprime.com/forum/showthread.php/137183-S2000-RSX-Steering-Wheel-Adaptors

"You can see that it has a large hole either side of the shaft. This is a tapered cast “draw” of about 10.5-11mm. It is very easy to lightly drill this out to a uniform 12mm diameter and a depth of 14mm. What I did was use these two holes as the drive points to take care of the rotational force of turning the wheel independent of applying this force through the four long bolts….This force is then applied through to the hub."

Yes that's correct. You need to drill open the hole diameter to a uniform cylinder. It's tapered inside. Every wheel will be a little bit different so trying to make an adaptor with a matching taper would be impossible...

 

[ektyperhatch]

You will also need to drill out the 4 holes on the back of the wheel also!. You can see it in the picture above.

 

[Hagasan]

You will also need to drill out the 4 holes on the back of the wheel also!. You can see it in the picture above.

Yes, this is normal and was required with other fitting methods before I did the adaptor. You have to remember the wheel was never designed for this application

 

[ektyperhatch]

Yes, this is normal and was required with other fitting methods before I did the adaptor. You have to remember the wheel was never designed for this application

yup yup , just wanted to make sure people were clear about how to install it!

 

[S2G-Unit]

You will also need to drill out the 4 holes on the back of the wheel also!. You can see it in the picture above.

Ok, i see that now. What is the size of the drill bit needed for those 4 other holes?

 

[Hagasan]

Ok, i see that now. What is the size of the drill bit needed for those 4 other holes?

It's best to just open the holes up gradually with either a round file or using a smaller than the hole drill bit do the same. Essentially what you are doing is trying to widen out the four holes to align with the four threaded holes on the boss from SoS or NRG etc. Slowly bit by bit is the key here. Don't rush in taking away too much metal from the wheel body.