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[Fot] Beaten by equipment

Subject: [Fot] Beaten by equipment
From: spitlist at cox.net (JOE CURRY)
Date: Sun, 3 Jun 2018 16:12:17 -0400 (EDT)
References: <CAO0FjVana4Y-zqt-ffy419UcNOhcKt9M1GS=ij4ckWghhNTcVg@mail.gmail.com>
I have several of them if you need some spares!


> On June 3, 2018 at 1:36 PM Mike Harmuth via Fot <fot at autox.team.net> wrote:
> 
>     I had a new failure this weekend at Lime Rock with the Spitfire. 1st lap 
> of the weekend, doing a sedate warm up around the track under full course 
> yellow. When I start down the front straight and put it in 4th gear, there's 
> a big vibration and ugly noises (short video attached). I was flat towed back 
> to the paddock and when I took the tranny hump cover off, I found the shifter 
> had snapped (see picture). A little more poking around and I discovered the 
> aluminum bell housing was cracked from side to side and two bearing caps were 
> missing from the tranny end of the driveshaft u joint (replaced over the 
> winter).
> 
>     I'm going to pull the tranny, driveshaft and diff to see what damage has 
> been done. In the past, at the same spot at Lime Rock, I had a problem with 
> the diff that 1st broke the tranny output housing. I didn't realize the 
> problem was downstream, it locked up again (broken tooth inside floating 
> around) and took out the rear  1/2 shaft u joints putting me in the wall.
> 
>     After rewatching the video, many times, I suspect the broken shifter was 
> the cause of the problem, (2 gears at once?) not a result but I'm pretty sure 
> disassembly of the tranny will confirm this. My question is, has anyone had 
> the shifter beak like this and if so, was it caused by something else or was 
> it just metal fatigue?
> 
>     Other related info, new engine (1296) , more power than the old one, less 
> than an hour on it. Zero track or dyno time, this was the 1st time the car 
> saw 4th gear. All drivetrain fluids changed over the winter. No disassembly 
> but cover off inspections and hand turning tranny and diff felt normal, last 
> used in October 2017 with no issues, with old, worn out engine.
> 
>     I will get this going for the K Cup, see you there.
> 
>     thanks
>     mike h
> 
> 
>       Front.mp4 
> https://drive.google.com/file/d/1tyfrdBh6_c02yqpi-PT_Y8iRt03W_icY/view?usp=drive_web
> 
> 
>     _______________________________________________
>     fot at autox.team.net
> 
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> 
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> 
> 
 
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