's Forum Archives - General

Archive Home >> General(1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 )

Question for Giant TCR Composite owners!(9 posts)

Question for Giant TCR Composite owners!Leak
Nov 6, 2002 5:52 PM
I just received my TCR 0 Composite frameset today and had a question. The compression plug for the carbon steerer tube is all doesn't have a rubber o-ring on the part that should press against the inside of the steerer tube (unlike the one that came with my Reynolds Ouzo Pro). Should it? The other weird thing is that it doesn't look like it "expands" when you screw the top part down into the lower part. If it doesn't expand, how is it supposed to grip the steerer tube?

Thanks for any insights you can provide on this!

re: Question for Giant TCR Composite owners!REPO42
Nov 6, 2002 10:46 PM
very, very lightly, grasshopper.......doesn't need much torque to tighten it. As soon as feels a teenie tiny tight, it's done. Can't remember the torque, but it is minimal.
On the next part. Actually it does a crappy job staying put inside the steerer tube. Mine seems to slide up all the time.. Doesn't affect performance in the least since the stem is bolted directly to the steere tube.
hope this makes sense.
re: Question for Giant TCR Composite owners!Leak
Nov 6, 2002 11:07 PM
Thanks for the info! So, is it supposed to have a rubber O-ring around the groove in the bottom piece? Mine doesn't and every similar compression plug that I've used and seen has always had one.

Also, I still don't see how this one works? On the Reynolds, there is an inner 5mm bolt/head that you turn to tighten the lower section in the steerer tube. Then the top section threads on and as you tighten the top section onto the lower section, it pulls the whole thing together.

On the FSA one, I can't see how you secure the lower part in the steerer tube?

I hope I'm making sense myself...

re: Question for Giant TCR Composite owners!AZMike
Nov 7, 2002 6:19 AM

I replyed on the components board but will try and provide some additional detail. I just went through this in building my TCR Composite. You will see that the compression plug is 3 pieces, a beveled, threaded bottom piece that fits into a sleeve, and then the top bolt looking piece that has the threaded hole through it. Assemble the three pieces loosely and slide it as far as it will go into the steerer. Then use a large allen wrench (I think 10mm or 12mm) and tighten it down. After you assemble the headset and slide the steerer through, put on the spacers and stem,etc., use the long bolt through the carbon cap to adjust your headset bearings. It works great, and I have had no problems with mine or the one that is on my wife's litespeed that is identical. Hope this helps.

re: Question for Giant TCR Composite owners!Leak
Nov 7, 2002 8:29 AM

Thanks! I saw your post in the Components section too. This is helpful, but I have a question. Do you count the bolt and carbon top cap as the third piece of the compression plug? If not, then I may be missing a piece. What is the sleeve that you're referring to?

It appears that I only have two pieces; the "bottom" piece that is grooved and "split" around it's diameter (where I thought an o-ring would reside) and a "top" piece that looks like an upside down top hat and which threads on to the bottom piece. Is there another piece that I should have?

As I noted over in Components, would you mind sending me an email? You can reach me at


Giant size L = 58, 59, 60 or ????Bruno S
Nov 7, 2002 10:52 AM
L is the largest size, right?
Giant size L = 58, 59, 60 or ????Leak
Nov 7, 2002 11:13 AM
Actually, they offer an XL size this year (well, in the 2003 model year). Check out

thank you nmBruno S
Nov 7, 2002 11:55 AM
re: Question for Giant TCR Composite owners!clintb
Nov 7, 2002 2:24 PM
On the '01 TCR that had carbon steerer, but before the recall, the torque was 35-52in/lbs. That info was on a sticker on the tube itself.