Author Topic: Disc adaptor for k2 4000 carbon swingarm (Read 4634 times)

subaru22b · « **on:** October 15, 2004, 06:12:17 am »

Anyone noes whether is there any drilling involved in installing the adaptor. Saw Rapid Descent Innovations (RDI) selling.. Thks!!!!

Simon · « **Reply #1 on:** October 15, 2004, 06:34:32 am »

Yes,all the required drill bits and taps are supplied with the hammerhead adapter including detailed instructions,its quite a simple job to do,afew of us have moved on to making our own.
Simon.

5500C · « **Reply #2 on:** October 15, 2004, 11:12:37 am »

I second that. The Hammerhead was pretty easy to install. It was a little bit nerve racking to drill into the swingarm dropout though!!!

subaru22b · « **Reply #3 on:** October 15, 2004, 12:35:10 pm »

Is there any adaptor that doesn't requires any drilling???

Matno · « **Reply #4 on:** October 15, 2004, 04:42:57 pm »

Only if you make it yourself. As far as I know, Mike Billett (the maker of the HammerHead) tried it and decided that there was too much variation for a "universal" fit that bolted on. That said, I think my design works quite well on my bike, and you can make the same thing. I've just uploaded a couple of pictures to my gallery showing a crude sketch of how I made it. There's also a template of where the holes need to be drilled which you can print out and use to trace on a piece of aluminum plate. (It worked for me, but your computer/printer may not print to exact scale, which would defeat the purpose. There's a file in the "Files" section with the actual measurements for international standard rear disc mounting holes - from Magura). Just for kicks I threw in a picture of a bolt-on carbon adaptor somebody else made (sorry, I can't remember which gallery I stole it from originally, but I think it's someone who no longer posts on the forum).

Here's my gallery:
http://idriders.com/cgi-bin/album_k2.pl?album=matno

Simon · « **Reply #5 on:** October 16, 2004, 05:38:52 am »

Quote

Is there any adaptor that doesn't requires any drilling???

Yes,checkout this
http://www.supercycles.co.uk/site_details.asp?ProductID=333

I actually have one of these kicking about,just make sure you get the correct length torsion bar (they come in different lengths,as well as being length adjustable)
Simon.
P.S they are very good just abit heavier than a hammerhead.

subaru22b · « **Reply #6 on:** October 16, 2004, 04:05:10 pm »

Went to the site, only has an order function there. There isn't any choice of length to choose from?? And what should be the length for a 4000 carbon swingarm??

Simon · « **Reply #7 on:** October 16, 2004, 07:37:55 pm »

Your best bet is to give them a call,I found them very helpfull in the past,the one I have has the standard length rod and is a bit to short,I remember the box had an option tick box on it regarding a longer rod,you are looking for an overall length when adjusted of around 260mm eye to eye (which I think means you need the 170mm rod,these lengths are from memory so I'm not totally sure) ,I'm pretty sure I worked out that the longer rod option would be fine,this adaptor does not require drilling but does give you the option of drilling and adding 1 screw if you wish,this purely to aid wheel changing.
Simon

subaru22b · « **Reply #8 on:** October 17, 2004, 05:47:19 am »

Thks for all ya replies but does any1 has a photo of the removed adaptor so i can see where r those holes drilled on the carbon swingarm?? that will allow me to assess whether or not to drilled my own..cos quite an old frame already..afraid the carbon might not be as "Tough' as b4..

Simon · « **Reply #9 on:** October 17, 2004, 07:27:45 am »

Does this help,note no drilling of carbon is required.

Simon

subaru22b · « **Reply #10 on:** October 18, 2004, 03:51:27 am »

Thks for the pic..but alas, still dun bear to drill my own... Btw, does drilling the mounting holes affect anything wif yr bike?

Simon · « **Reply #11 on:** October 18, 2004, 04:05:24 am »

Quote

Thks for the pic..but alas, still dun bear to drill my own... Btw, does drilling the mounting holes affect anything wif yr bike?

Not so far and I'll doubt it ever will.
Simon

5500C · « **Reply #12 on:** October 18, 2004, 05:23:47 am »

Quote

Thks for the pic..but alas, still dun bear to drill my own... Btw, does drilling the mounting holes affect anything wif yr bike?

Yeah, it stops like a mother and looks killer with rear disks!!!

Actually it wasn't that big of a problem drilling out the rear swingarm, just take your time and it wasn't that big of a deal.

junkster · « **Reply #13 on:** October 18, 2004, 08:30:39 am »

hi, you'll find that the rear drop out isn't weakened as the steel bolts used to fix the adapter in place taps into the hole, thus 'fills the gap' and of course you have the adapter itself acting as a brace to strengthen the rigidity. Least this is what I think is the case. I had great reservations, especially with the upper drill hole, since there isn't a lot of width there. Loads of far harder riders than myself have drilled the drop outs like this with no problems. Just get it marked out ok, (a doddle with the hammerheads I guess), and drill a straight hole, and you are laughing. Here is my home made one.

cheers,

Dan

Old Proflexer · « **Reply #14 on:** October 19, 2004, 02:42:05 am »

doesn't seem that long ago that i was posting instructions on how to make these and catching flack for doing so -

it's all good - lots of different ways to stop a bike and attach the things that stop it

OP

i really like that carbon one tho' - very sharp

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Author Topic: Disc adaptor for k2 4000 carbon swingarm (Read 4634 times)