You are Terrific!...You took lots of time to send this long email..Good Job
Racer Bud
----- Original Message -----
From: "Greg "Lunker" Hilyer" <lunkercars@earthlink.net>
To: "Friends of Triumph" <fot@autox.team.net>
Sent: Saturday, October 25, 2008 7:17 PM
Subject: [Fot] Good vibrations, bad vibrations
> Hello all,
> I queried the list awhile back on my high speed vibration experienced
> at The Glen and again [after having the drive-shaft straightened] at
> Brainard. With lots of great ideas from the list, I now know that my
> brake drums are in reasonable balance, diff is OK, axles are true and
> now also know more about drive-shafts.
> My theory is that the shop in Indy checked the shaft with a dial
> indicator. They found it .030" out of true, straightened it, and did
> some crude form of balance check and pronounced it "good to go".
> Didn't solve the problem. My local and trusted axle/drive-shaft shop
> put it on their [relatively] high-tech CNC machine and every red
> light on the thing came on! The slip yoke was the culprit. Although
> the slop was almost undetectable, it was just the grease in the
> splines making things seem tight. When I left their shop I was
> thinking of where to get another drive-shaft. Took me about 3 blocks
> to realize that I already have a worn-out 45 year old drive-shaft...
> why would I want another one? Had a new one made with Spicer
> components and it should be good for another 45+ years.
> The moral of the story is that we are [most] all driving around with
> 40+/- year old drive-shafts. This is not likely a problem experienced
> "back in the day"... they simply hadn't gone enough miles. Any who
> have the mystery vibrations might want to have a look.
> After 6 races in the last 7 weekends, this weekend feels a bit 'blah'
> rolling over to 6 of 8. Watkins Glen had been on the books since last
> year and curtailed my out of town racing for the season. Brainard MN
> was kind of on the way home. I got Tony's message when I had made it
> more than 1/2 way home and made a U-turn in Wichita KS for Elkhart
> Lake to run the Road America Vintage Enduro [hey Tony, did I remember
> to say THANKS]?. Home again for a day before I got the itch and
> loaded up a BMW 2002 for the Pueblo [Colo] Enduro. After a couple
> recovery days I was a bit down with the idea of not keeping the
> streak going. That Thursday was my birthday and I remembered that the
> racing streak wasn't over. Sunday was our monthly Karting league and
> after missing a few races I still had a chance to regain 3rd in our
> season points race - and did. The next weekend was actually a much
> needed off. Last weekend was up to Pikes Peak International with "The
> Brick" [IT spec 2002]. Hope to bring the average back up to 8 of 9
> next weekend by running 2 races/2tracks in one weekend [TR + kart].
> Broke, tired, broke, happy and did I mention BROKE?? But having more
> fun than I thought was legal these days.
> Greg "Lunker" Hilyer
> TR4 #314
> Albuquerque NM
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