Tim Taylor Senior Moderator Location: Oakland, CA Join Date: 02/02/2007 Age: Possibly Wise Posts: 622 Rally Car: Mazda 323 GTX |
I got a little free time and made some progress on the GTX brake upgrade over the last few days. The photos are for you John because there's really no a good reason to make the brake parts like this. That's right I admit it...they're like this because I can
First up is one stock diameter spindle on the left and two that have been turned down in outside diameter to fit inside my rotor hats. 
I need longer wheel studs but I couldn't find anything that fit exactly. So I bought some LONG ARP studs (PN/100-7713), shortened them, turned in a bullet nose, and had them re-plated. 
The knurl is slightly bigger so the holes need to be reamed out to 0.500" diameter. 
And all pressed in. 
All the sexy brake parts. 
That's right John...billet 6al-4v titanium t-nuts. Offering up decreased rotational inertia, corrosion resistance, radial expansion for theoretically less warpy rotors, and they're really shiny.  I even made a special tool to stake the backside of the t-nuts making them into self locking threads. Might still get safety wired too out of paranoia.
With the new wheels. 
 Edited 1 time(s). Last edit at 03/12/2008 11:06PM by Tim Taylor. |
Ted Andkilde Mega Moderator Location: Windsor, ON, Canada Join Date: 04/30/2006 Age: Possibly Wise Posts: 329 Rally Car: 1968 Mini |
Hey Tim
Don't forget to give the Ti bits a good dip in hi-temp anti-sieze, I learned from mountain bike bits that Ti is a bugger in those dissimilar metal environments. Looks far too pretty to bo basjing about in the woods with 
Cheers, Ted Pure mathematics is the enemy of every truly creative man -- Sir Alec |
Grant Hughes Mega Moderator Location: Whitefish, MT Join Date: 01/11/2006 Age: Midlife Crisis Posts: 6,818 Rally Car: BMW |
Tim Taylor Senior Moderator Location: Oakland, CA Join Date: 02/02/2007 Age: Possibly Wise Posts: 622 Rally Car: Mazda 323 GTX |
NoCoast Wrote:
------------------------------------------------------- > Your like a magician of sorts. I assure you that (like most things) it becomes much less magical when you do it for a living. > > I have some questions to ask you. > > I am getting ready to do some work on the mills at > the technology/machine shop down at Metro State > College of Denver next week with some students. I > have M14 studs to press into the hubs, but need > bored (or is reamed the correct term) because > stock stuff is M12. The knurl diameter is 14.75 > mm or 0.580". > I also have the 7/16-20 steel inserts that I am > going to press into the upright to bolt the > caliper to. Their Wilwood parts and I believe > they say to bore to 9/16" to press them in, but I > measured them anyhow. It's knurl diameter is > 0.57". > What is the bit that you are using. What > diameters should be used for these knurl > diameters? I was going to post pictures, but the > camera is MIA. That's a strait flute chucking reamer in the picture. On the wheel studs you will want about 0.010" of interference which is a 0.570" reamer. Probably easiest for you to buy it from McMaster Carr. They only seem to have 0.5680" which is close enough. The Wilwood insert should be fine at 9/16" which would make it a 0.0075" press fit. You might be able to get away with just drilling it if you're careful but I would suggest the following since you're trying to move the holes over. -get a 1/2" endmill and SLOWLY peck drill it into the existing hole offset. This will keep it from walking to the side and ovalizing the hole. -enlarge that very carefully with a twist drill (not the easiest technique as it will try to grab), a hole enlarging drill that doesn't grab like the photo below, or a series of reamers. 
> > Also going to mill out all the broken bolts in my > two T3 turbine housings. The car should be > driving by Easter though if all the orders show up > and the machine work goes as planned. > > Grant Hughes > www.nocoastmotorsports.net > Denver, CO Cool, that's great news. Let me know if you have any other questions. Tim |
Banned Mod Moderator Location: John and Skyes Magic Love liar Join Date: 08/24/2007 Posts: 2,154 |
Tim Taylor Senior Moderator Location: Oakland, CA Join Date: 02/02/2007 Age: Possibly Wise Posts: 622 Rally Car: Mazda 323 GTX |
Tim Taylor Senior Moderator Location: Oakland, CA Join Date: 02/02/2007 Age: Possibly Wise Posts: 622 Rally Car: Mazda 323 GTX |
Ted Andkilde Wrote:
------------------------------------------------------- > Hey Tim > > Don't forget to give the Ti bits a good dip in > hi-temp anti-sieze, I learned from mountain bike > bits that Ti is a bugger in those dissimilar metal > environments. > > Looks far too pretty to bo basjing about in the > woods with > > Cheers, Ted > > Pure mathematics is the enemy of every truly > creative man -- Sir Alec Hey Ted, No worries, I learned that one the hard way too. On the mountain bike front I made those t-nuts out of scrap Ti that was left over from making these billet dropouts: 
Here is a steel set on one of my single speed frames: 
And finally the really stupid. A custom 33t single speed chainring out of a 0.25" plate of titanium. I worked at Cook Bros. Racing during college so I already had the mounting profile of the F-cranks. I couldn't resist engraving the brand name of "Spacely Space Sprockets". I'm sure at least Anders will get the reference. 
|
Andrew Steere Elite Moderator Location: South Central Nude Hamster Join Date: 12/29/2005 Age: Possibly Wise Posts: 2,008 Rally Car: too rich for my blood, share a LeMons car |
Ruh Roh!
You're a sick, sick man.  Andrew Steere Lyndeborough, NH KB1PJY |
Tim Taylor Senior Moderator Location: Oakland, CA Join Date: 02/02/2007 Age: Possibly Wise Posts: 622 Rally Car: Mazda 323 GTX |
Michael LeCompte Professional Moderator Location: Arcata, CA (Sverdlotsk, Siberien) Join Date: 11/11/2007 Age: Midlife Crisis Posts: 714 Rally Car: Mazda GTX BPT - - - - - Not full-fledged - - - - - More like fledgling. |
Tim Taylor Senior Moderator Location: Oakland, CA Join Date: 02/02/2007 Age: Possibly Wise Posts: 622 Rally Car: Mazda 323 GTX |
adam crane Mod Moderator Location: Seattle, WA Join Date: 01/28/2006 Posts: 382 Rally Car: corolla GT-yes |
Patrick McVeigh Mega Moderator Location: Toronto, ON Join Date: 12/21/2005 Age: Midlife Crisis Posts: 358 Rally Car: Student Loans |
Tim Taylor Senior Moderator Location: Oakland, CA Join Date: 02/02/2007 Age: Possibly Wise Posts: 622 Rally Car: Mazda 323 GTX |
Ted Andkilde Mega Moderator Location: Windsor, ON, Canada Join Date: 04/30/2006 Age: Possibly Wise Posts: 329 Rally Car: 1968 Mini |
Tim Taylor Wrote:
------------------------------------------------------- > Here is a steel set on one of my single speed > frames: Wow, just wow... My TI experience is limited to bottle cage bolts and seat clamps 'welding' themselves to their cro-mo homes -- I'm simply not worthy
The drop outs are outstanding, as are the Jetsons chainrings. Cheers, Ted Edit: Damn, you're probably younger, fitter, richer and better looking than me too -- I've suddenly lost all my will to live... On the plus side, I am younger and better looking than JVL  Pure mathematics is the enemy of every truly creative man -- Sir Alec Edited 1 time(s). Last edit at 03/14/2008 03:02PM by Ted Andkilde. |
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