Peru ProSolo
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From: Milwaukee
Peru ProSolo
Congrats to Jason on yet another Pro win! I did my best this time to keep him from getting another bonus point, however. 
Also, thanks are deserved to Jason, Juliann & Brad for pulling off an event that usually a region would run. It went very well, probably the smoothest national event I've been to this year. Could you guys do something about the freak rain showers next time, though?
I thought the course was very intense, hardly any straight or steady state spots...good fun. While helping set up, I thought it was going to be painfully tight.
I know my perceptions while walking a course can be way off at times, and that was the case here.
One of these days I'm going to make it through the first round of the challenge. Heck, I'd probably be happy just to get a time on both sides.
Next time...triple Bull!
Also, thanks are deserved to Jason, Juliann & Brad for pulling off an event that usually a region would run. It went very well, probably the smoothest national event I've been to this year. Could you guys do something about the freak rain showers next time, though?
I thought the course was very intense, hardly any straight or steady state spots...good fun. While helping set up, I thought it was going to be painfully tight.
I know my perceptions while walking a course can be way off at times, and that was the case here.One of these days I'm going to make it through the first round of the challenge. Heck, I'd probably be happy just to get a time on both sides.
Next time...triple Bull!
What happened?
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From: Milwaukee
Nope, I'm sticking to the 1.25" solid. I don't want to change anything in the car right now, other than maintenance stuff (since Topeka is so close). I think the car is great. I just want to concentrate on the driving, mostly trying to be more consistent and maybe a bit more brave in the really fast stuff - where I got crushed at Tour (thanks for that too, Jason 
)
The driver side half shaft decided it had enough when I tried to warm the tires from 8k. The inner CV to be exact. There's a reason I started carrying a spare driver side shaft this year . A bunch of us pushed it up onto my trailer and I swapped out the shaft in the street when I got home that night.
Being the curious engineer, I pulled the CV apart and found the trunion had failed (...not sure if that's the correct term for it, but its the part with an ID spline and three arms that extend radially to take the rollers that in turn ride in the outer cup). It seems to be the usual failure. The Y shaped piece of part number 5:
http://www.slhondaparts.com/images/PCI/13S...3S2A0/004/6.jpg
) The driver side half shaft decided it had enough when I tried to warm the tires from 8k. The inner CV to be exact. There's a reason I started carrying a spare driver side shaft this year
. A bunch of us pushed it up onto my trailer and I swapped out the shaft in the street when I got home that night.Being the curious engineer, I pulled the CV apart and found the trunion had failed (...not sure if that's the correct term for it, but its the part with an ID spline and three arms that extend radially to take the rollers that in turn ride in the outer cup). It seems to be the usual failure. The Y shaped piece of part number 5:
http://www.slhondaparts.com/images/PCI/13S...3S2A0/004/6.jpg
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From: ghettoville, abq, nm
The bearings on the trunion failed? I know I've seen a number of pitted cups. Were the splines in good condition?
I've got a friend in LA who builds prototype axles and CV's for the OEMs - he's interested in getting parts and building us some replacement parts. The cost wouldn't be much higher than OEM Honda price, but the cup and trunion would be slightly oversize with a higher load rating. Yes, I know, not an approved BStock legal modification. However, given the number of failures, perhaps we could get an exemption on that part?
I'll see you Friday - if you want to donate those parts to a good cause, I'll send them to LA.
Martin
I've got a friend in LA who builds prototype axles and CV's for the OEMs - he's interested in getting parts and building us some replacement parts. The cost wouldn't be much higher than OEM Honda price, but the cup and trunion would be slightly oversize with a higher load rating. Yes, I know, not an approved BStock legal modification. However, given the number of failures, perhaps we could get an exemption on that part?
I'll see you Friday - if you want to donate those parts to a good cause, I'll send them to LA.
Martin
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From: ghettoville, abq, nm
Sorry, my bad, gotta learn to spell...
trunnion
Trun"nion, n. [OF. trognon the stock, stump, or truck of a tree, F. trognon a core, stalk, fr. tron a trunk, stem. Cf. Trunk.] 1. (Gun.) A cylindrical projection on each side of a piece, whether gun, mortar, or howitzer, serving to support it on the cheeks of the carriage. See Illust. of Cannon.
2. (Steam Engine) A gudgeon on each side of an oscillating steam cylinder, to support it. It is usually tubular, to convey steam.
Trunnion plate (Gun.), a plate in the carriage of a gun, mortar, or howitzer, which covers the upper part of the cheek, and forms a bearing under the trunnion.
Trunnion ring (Gun.), a ring on a cannon next before the trunnions. [R.]
Source: Webster's Revised Unabridged Dictionary,
trunnion
Trun"nion, n. [OF. trognon the stock, stump, or truck of a tree, F. trognon a core, stalk, fr. tron a trunk, stem. Cf. Trunk.] 1. (Gun.) A cylindrical projection on each side of a piece, whether gun, mortar, or howitzer, serving to support it on the cheeks of the carriage. See Illust. of Cannon.
2. (Steam Engine) A gudgeon on each side of an oscillating steam cylinder, to support it. It is usually tubular, to convey steam.
Trunnion plate (Gun.), a plate in the carriage of a gun, mortar, or howitzer, which covers the upper part of the cheek, and forms a bearing under the trunnion.
Trunnion ring (Gun.), a ring on a cannon next before the trunnions. [R.]
Source: Webster's Revised Unabridged Dictionary,
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From: Milwaukee
No, the cup for the failed joint looked fine. No pitting whatsoever. It looks to me like tripod annulus fails due to bending loads imparted from the arms/trunnions. One of the other three trunnions also had a crack starting in the fillet that blends it into the annulus (exact same place the neighboring one fractured).
You can try to get an exemption for a stronger part, but I really doubt it will happen.
There's plenty of precedence of similar things being denied. Some expensive, failure prone part in the timing drive of older 911 Porsches comes to mind.
I'll section the failed tripod after Topeka, when I have some more time. But, it looks like a combination of overload (launches) and fatigue from driving around on cracked parts. It looks like mine cracked about 1/2 way through (smooth fracture), and the last shock load finished it off (jagged fracture).
(cleaned up my nomenclature after a quick trip to http://www.raxles.com)
-We hijacked my own thread!
You can try to get an exemption for a stronger part, but I really doubt it will happen.
There's plenty of precedence of similar things being denied. Some expensive, failure prone part in the timing drive of older 911 Porsches comes to mind.I'll section the failed tripod after Topeka, when I have some more time. But, it looks like a combination of overload (launches) and fatigue from driving around on cracked parts. It looks like mine cracked about 1/2 way through (smooth fracture), and the last shock load finished it off (jagged fracture).
(cleaned up my nomenclature after a quick trip to http://www.raxles.com)
-We hijacked my own thread!
Joined: Jul 2002
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From: Orlando
now the CV axles themselves are covered in a TSB of sorts for certain vin 2001's. I went in for a rear end vibration and the dealer swaped out both axles claiming their was a TSB out for it. Now I'm assuming that they replaced them with a different axle (as in different part number, why have a TSB and put the same defective part on). So i'm wondering if the new axles by any chance have solved this problem.