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Title: Boring out top triple for SBK forks? Post by: gatorgrizz27 on May 25, 2011, 10:59:42 AM Hey guys, I have to bore out the top triple to 53mm to run my 999 forks, but am having trouble getting it done anywhere. Do you think it would be possible to do it using a tool like this one and a drill press and press vice? Or would I not even be able to get done precisely? Any other ideas or shops that do it for a good price? Thanks.
http://cgi.ebay.com/Metal-Silver-Tone-53mm-Boring-Bit-Tool-Carpenter-/350461714019?pt=LH_DefaultDomain_0&hash=item5199255e63 (http://cgi.ebay.com/Metal-Silver-Tone-53mm-Boring-Bit-Tool-Carpenter-/350461714019?pt=LH_DefaultDomain_0&hash=item5199255e63) Title: Re: Boring out top triple for SBK forks? Post by: Artful on May 25, 2011, 11:51:27 AM Noooooo! Back away from the power tools :D That is a wood bit, I couldn't see that ending well. I whole heartedly recommend finding a machine shop in your area with soem epxerienced folks. This a stone simple job for a trained machinist, but easy to botch for a rookie.
Title: Re: Boring out top triple for SBK forks? Post by: Some Dude on May 25, 2011, 11:59:35 AM That tool will grab the aluminum and use the triple to beat the hell out if you. (Like a propeller) If you can't find someone local send me a pm and I can help you.
Title: Re: Boring out top triple for SBK forks? Post by: TAftonomos on May 25, 2011, 06:53:45 PM If you choose to ignore the above advice, I will PP you $50 for a video of you using that wood boring bit on your triple clamps.
Title: Re: Boring out top triple for SBK forks? Post by: mookieo2 on May 25, 2011, 07:03:22 PM I gave my triple to my local bike shop along with a fork leg and they sent it to their machine Guy for me. It cost me $70.
Title: Re: Boring out top triple for SBK forks? Post by: suzyj on May 25, 2011, 08:10:39 PM Here's the tool I used to machine my top triple:
(http://farm5.static.flickr.com/4100/4858644898_f127a1bff3.jpg) It's a pretty involved job. You need to send it to a real machine shop. Title: Re: Boring out top triple for SBK forks? Post by: He Man on May 25, 2011, 09:06:58 PM dont listen to anyone up there. they are all fools. Taft is the real deal. use the wood thing and film it.
Title: Re: Boring out top triple for SBK forks? Post by: xcaptainxbloodx on May 25, 2011, 09:54:21 PM dont listen to anyone up there. they are all fools. Taft is the real deal. use the wood thing and film it. yes. Title: Re: Boring out top triple for SBK forks? Post by: uglyducky on May 26, 2011, 11:22:39 AM Noooooo! Back away from the power tools :D That is a wood bit, I couldn't see that ending well. I whole heartedly recommend finding a machine shop in your area with soem epxerienced folks. This a stone simple job for a trained machinist, but easy to botch for a rookie. [laugh] [laugh] [laugh] [laugh]Title: Re: Boring out top triple for SBK forks? Post by: booger on May 26, 2011, 02:37:14 PM dont listen to anyone up there. they are all fools. Taft is the real deal. use the wood thing and film it. and a +2 you've got nothing to fear Title: Re: Boring out top triple for SBK forks? Post by: tiger_one on May 26, 2011, 02:51:08 PM I imagine you could do it with a hone, just measure often. Me, I'm sticking to the boring bar.
Title: Re: Boring out top triple for SBK forks? Post by: scduc on May 26, 2011, 02:58:50 PM There are no machine shops in your area? The wood bit thing might work, but I would not risk it. The biggest thing is to make sure everything is rigid. I'd tell ya to send it to me, but you would lose 1 week just in shipping and I would need to know the exact bore diameter.
Title: Re: Boring out top triple for SBK forks? Post by: gatorgrizz27 on July 16, 2011, 03:01:14 PM Yeah I do have some unusual ideas from time to time, but that has been the basis for this project and so far so good. [laugh] Honestly I think with a decent drill press vice and feeding it slowly, the worst that would happen would be the bit catching the edge of the slot and either chipping a tooth on the cheapo bit or catching and the belt slipping.
Luckily I picked up a mill and a lathe the other week with a ton of tooling so boring bar it will be. Would it be best to remove the bolts and put a washer in the slot, then clamp them down and bore it to 53mm? That should allow the clamp to grab the forks properly I would think. |