build diary
<< | show individual entries | >>December 8, 2006: 
The dirty secret of Hayabusa riders.
Their exhausts look like big fat 2.5" pipes, when really the ID is 1.5". Compensation or heatshielding?
entry 1312
December 11, 2006:
I've been having some fun on eBay.
On a tip from a motorcyclist, I decided to look for ZX-10R mufflers. They're a 162 hp bike with a single muffler - and it only weighs 375 lbs dry! Yikes. Turns out they have a similar flange on the back of the muffler as the Busa. I picked up an "experienced" version for $23.50. I might have a Triumph 955 muffler before too long as well.
I also won a suede 12" kart steering wheel. I have a 13" wheel on the car now and I'm curious about how the 12" will feel. I can make a simple adaptor to try it on the existing column. For $26, it was a really cheap way to get slightly quicker steering. You can never have enough steering wheels.
entry 1313
December 14, 2006:
More mufflers!
Okay, not any new ones. But the Kawasaki ZX-10R unit showed up. It's very similar on first inspection to the Busa one, but not so much once you get the input pipe removed.
First, the inlet is quite a bit smaller. I haven't measured it yet, but I think it's 2" instead of 2.5". However, the ID of the pipe going into it is significantly bigger than the Busa unit because it's a single-wall setup instead of double-wall. That's a bit of a shame for me, I have a 2.5" ID exhaust.
The internal construction of the mufflers is quite different. The Busa unit is what I'd expect from a chambered design but the Kawasaki piece looks almost like a catalytic converter. It's not like that all the way though because I can't see any light through there as with a cat. I wonder which will be lower restriction? I think it's time for a little comparison test!
A coworker asked me why I was messing with mufflers again. He thinks the car sounds great. Well, I wouldn't mind a bit of a volume drop at WOT but it also gives me something to do while it's cold outside and my garage is still jammed full of boxes...
entry 1314
Comparing the two motorcycle mufflers.
The Kawasaki unit is on the right and the Hayabusa on the left. A very interesting comparison of internal design.
entry 1315
December 20, 2006: 
I picked up this steering wheel to try out.
It's a 12" piece, 1" smaller than my current wheel. I had been thinking of making an adapter to put it on the existing setup, but now I'm all distracted and considering building a new piece from the steering column back. Hmm. Regardless, it's a nice little suede wheel that only needs one small piece of repair and it only cost me about $26. It's time to stop messing around on eBay.
entry 1316
December 23, 2006:
Instead of working on cleaning out the garage, I spent some time poking around with the website.
About three years too late, I've added an RSS feed to the site. Let me know if you have any problems with it, like everything else on the site it's homebrew. I've also tweaked some formatting to make the display better for Internet Explorer users. The Search has already been turbocharged. Soon I'll also add the ability to start reading at a certain date. If anyone has comments about the navigation of the site, I'm interested in hearing it.
entry 1317
January 1, 2007: 
Happy new year!
This is how I celebrated - by taking the Seven out for a short spin. I can't say the race tires grip all that well on an icy driveway, but the roads were just fine other than the usual sand and gravel. It's nice to get back behind the wheel and play with the car again.
entry 1318
During the holidays, I managed to make a dent in the pile of stuff in the garage.
It's still not exactly finished, but there's enough room to park some more of the cars inside. I've never had a garage that was attached to the house before, and I just love the way this innocuous door in the basement opens up to reveal the toys. There's a Miata under construction in front of the Seven and room for the blue Miata and the Jeep behind it. It's a big garage.
entry 1319
January 7, 2007:
I've been really busy.
But not on the Seven, unfortunately. I have a pile of things to try out but thanks to a book deadline, no time to try them. The book has to be done in the next week or so, after which I'll catch up on all the work.
There's some travel in the future. I'm heading to San Francisco on Friday to take part in the Bay Area Miata Club tech day. They've asked me to come out a few times in the past, but this year it worked. I'll know more in a couple of days, but it's also likely that I'll turn around and head back to California a few days after returning to attend a testing session at the Streets of Willow. And yes, the presence of the Seven has been requested. I hope this works out, it's going to be a really interesting day if it does. More details will follow once I know if this is going to happen or not. But it may mean a week of frantic work checking the car over to make sure it's ready for another high-profile test...
entry 1320
January 17, 2007:
Lots of snow on the ground, so the Seven is stuck in the garage.
Quite possibly literally stuck - I haven't dared try it yet.
The long drought of no-car-time is over. I handed over the final photographs and manuscript of another book, so now it's time to start making things again. I have heard from the owner of another CMC Miata frame who has found extensive cracking in the welds of his rear control arms. This is a car that sees exclusively track use on big slicks, but I'm definitely going to investigate that. The rear end of the car is certainly going to get some close examination. This is just one more reason to amputate the CMC geometry in the rear and replace it with something else.
Unfortunately, the trip to California this weekend looks as if it's not going to happen. I think it's going to be postponed for a similar event in Oklahoma in early March. I should know more later this week. Time to get cracking then.
entry 1321
January 18, 2007:
Okay, it's time to kick a new project into high gear.
The Targa Newfoundland is only 8 months off. I'm about to start work on the third chassis, as the first two just didn't work out. With the new book and the move, not much happened on that car. That's going to change soon. It's going to be a totally different sort of build than the Seven although I'm not sure there will be any less welding :) It took about 7 months for the Seven to hit the track the first time. I have less time than that so hopefully I can put this thing together in a hurry. Wish me luck. And don't worry, the Seven won't be completely neglected.
January 29, 2007:
AutoRacing1.com has an article about Locosts that includes a short bit about yours truly.
The site is subscription-only, but a one-week pass is $5.95. The article itself has the best summation of the Locost concept that I've seen:
"The basic Locost rules are: Keep it as light as you can, keep it cheap, make it look roughly like a Lotus Seven, and keep it fun."
In other news, the new garage is now plumbed for 220v so I can start throwing sparks. Yesterday was a gorgeous day but the ice on the driveway kept the Seven trapped inside. I'm starting to get a real itch to drive it again!
entry 1323
January 30, 2007: 
These Konig wheels look a lot like the ones used on the legendary Caterham Seven JPE.
And they have snow tires on them. Hmm.
entry 1324
January 31, 2007: 
While cleaning up the garage, I came across this badge.
I pulled it off an old Holden in the Australian outback over 20 years ago. Since the Seven is a "special" in the lightweight-race-car-built-of-production-parts meaning of the word, it's actually appropriate for the car. And kind of rakish too. I'm very tempted to run this along the driver's side of the hood. This is what happens when I don't get to drive the Seven over the long winter.
entry 1325
February 6, 2007:
Due to an influx of spam, I'm reworking the guestbook.
I love to hear from people, but the constant barrage of garbage is tiring. The best ones are the ones offering to sell me something to stop guestbook spam! Regardless, it won't be a problem much longer. True to form, I'm building my own code for the website. I just have to finish loading up the database and we'll be spam free once again!
entry 1326
February 8, 2007:
The guestbook rewrite is done.
Okay, it's not a major thing and I still have to do a little cleanup. But it does cut down on a whole lot of annoyance. I really do like to hear from people - copying all the entries over to the new database gave me the chance to read it all again. It's always fun to see early notes from folks who are now driving or building their own cars, and the reactions to various problems I faced along the way.
In actual Seven news, it looks as if I'll be heading to the track for a comparison test in March. This should be really interesting. I'm not really looking forward to another 1900 mile road trip, but you do what you have to do. I must be nuts.
entry 1327
February 9, 2007:
There's a new video!
(2.88 MB) John Hunter, the fast Miata driver (of a fast Miata) who was my big motivation at the 2006 Flyin' Miata Open House, sent me a February surprise. It's a little shaky, being hand-held, but I really enjoy it because I don't often get to see the car from outside. I love the noise, it makes me tingle. It's not the fastest lap of the day - you can tell the tire pressure is too low from the noise - but it's still pretty quick. Oooh, it's time to get back out there.
entry 1328
February 10, 2007:
It was a nice day, and I had to move the Seven in the garage in order to move a Miata hardtop.
So the obvious thing was to go for a drive! This was partly to remind myself what might have to be done for the trackday in March, but really it's just because I could. Ahh, it's nice to get back behind the wheel of the little beastie, with all the entertaining pops, snorts and crackles it likes to make. I do have a little work to do before the track test, mostly a nut-and-bolt through the entire car to make sure it's in good shape.
When I got back from my short buzz around, Janel informed me that I "smelled like the Seven". This does not incite lust in the female of the species, apparently.
entry 1329
February 14, 2007: 
I'm doing a little testing for Kinetic Vehicles.
These are front upper control arms that are a direct replacement for the ones I have. However, they're a little more cleverly designed. The thick tube is steel and has one right hand and one left hand thread on the rod ends, so I can adjust the camber without having to disassemble things too far and with a high level of accuracy. The short arm is made of aluminum and is a gorgeous piece - and also lets me adjust the alignment without undoing a thing. I'm going to use these to take out a bit of the camber I have now and see if the steering doesn't get too heavy with lots of lock. They should be on the car for the track test in a couple of weeks. Hmm, I should probably get to work on preparing for that, shouldn't I?
entry 1330
February 15, 2007:
I've been reading various forums and coming across references to my car.
And I've realized that people remember when I have a problem, but not always if I solved it. For example, my various trials in getting the individual throttle bodies working and what the final configuration was. Or if I ever got the diff to stop moving around, or if the car has evil killer handling. I guess I'll have to post a "This is the current state of the car" page at some point along with the current problems I'm trying to solve. It's going to take some thinking about how to set that up so it's not a royal pain to keep up. Maybe a FAQ. Suggestions, anyone?
entry 1331
February 16, 2007: 
While I'm waiting for one last bolt to complete the new front suspension, the Seven is under wraps.
The Targa Miata is getting ready for a paint job. By the end of the weekend, it should be white! Let's hope so. It might also be runny and covered in bumps.
entry 1332
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