restoring Merkur- solid T5 driveshaft....yay or nay?
Posted by Clayto
Clayton McCrary Mega Moderator Location: Olympia,WA Join Date: 07/04/2013 Age: Possibly Wise Posts: 161 Rally Car: XRatty purchased. Now build it!! |
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Clayton McCrary Mega Moderator Location: Olympia,WA Join Date: 07/04/2013 Age: Possibly Wise Posts: 161 Rally Car: XRatty purchased. Now build it!! |
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Clayton McCrary Mega Moderator Location: Olympia,WA Join Date: 07/04/2013 Age: Possibly Wise Posts: 161 Rally Car: XRatty purchased. Now build it!! |
Not sure on diameter....It's a custom driveshaft. Fits to a stock housing. I think I'm gonna get it and put it in my parts pile. Previous owner had it 60,000 miles with no vibration problems. Wife is going back to work after 8 years raising kids.... Stoked for her new job and for some of my Budget back 
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John Vanlandingham Infallible Moderator Location: Ford Asylum, Sleezattle, WA Join Date: 12/20/2005 Age: Fossilized Posts: 14,152 Rally Car: Saab 96 V4 |
No Guibo right next to a cat is good... One piece SEEMS to make sense in a car that the motor sits still and the diff is fixed like in IRS. However. We can review known knowns Seems like every IRS car I can think of in rally use---and that's EVERY AWD car since beginning of time---and a lot of others retain the 2 piece design... I don't understand why but they do. Group N they must by rules, Group A they can do whatever they want---and they all retain 2 piece....Probably a good reason.. We know they all retain 2 piece....we don't know why they do or if its know big deal (and certainly if it were BETTER-er to have 1 piece for any reason, all these works cars in last 30 years would have one piece.. There's something in driveshaft design called "critical speed" and length and rpm are factors, so I think it MIGHT be smart to look into driveshaft critical speed before making any decision... The other thing is: you wanna pay twice? What box is going to be in this? Might be nice to nail that down before deciding on propshaft design. But as I said i don't know anything about propshafts.. 
this might be a help in thinking ^ John Vanlandingham Sleezattle, WA, USA Vive le Prole-le-ralliat www.rallyrace.net/jvab CALL +1 206 431-9696 Remember! Pacific Standard Time is 3 hours behind Eastern Standard Time. |
Mark Hille Godlike Moderator Location: The hills of CT Join Date: 10/04/2011 Age: Midlife Crisis Posts: 135 Rally Car: I have two crap boxes |
Clayton McCrary Mega Moderator Location: Olympia,WA Join Date: 07/04/2013 Age: Possibly Wise Posts: 161 Rally Car: XRatty purchased. Now build it!! |
Of course this seems to make sense. But , I had to bring it to the forum before I decide to buy this and keep it for awhile. I will run the stock one as long as possible and either throw spare stock in or go custom if I get it.
I'm waiting on exact length from seller. Here's the ad info..... "Looking to sell my 1-piece T5 XR driveshaft. It is steel The pros: -No guibo -No center support bearing to align -No vibrations (personally tested up to 145mph) -No adapters necessary -Good u-joints, although regreasing is recommended as it's been sitting for a few years. The cons: -Paint has worn off from rock chips and the sort. Could be repainted if this is something that concerns you. -A little too long, requires loosening the trans mount and front sway bar to install located in Vancouver, WA. Would rather not ship due to size." Straight and simple is what I'm looking for and if the length is good I'll grab it
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John Vanlandingham Infallible Moderator Location: Ford Asylum, Sleezattle, WA Join Date: 12/20/2005 Age: Fossilized Posts: 14,152 Rally Car: Saab 96 V4 |
Yeah. all ferrous metals--even cast iron--have the same...(iron just doesn't have the fatigue resistance...ya snows bend it CRACK!) What ever since it is clear theres a relationship tween dia, length and critical speed and for a given dia the speed goes down maybe the whole deal with retaining 2 piece on like fast IRS cars is each piece is kinda short.. Whatever the case it sure is spoooky thinking about sumpin only 035" of sheetmetal away is spinning at 6 or 7 thousand rpm right next to my butt. Yikes 
 John Vanlandingham Sleezattle, WA, USA Vive le Prole-le-ralliat www.rallyrace.net/jvab CALL +1 206 431-9696 Remember! Pacific Standard Time is 3 hours behind Eastern Standard Time. |
Mark Hille Godlike Moderator Location: The hills of CT Join Date: 10/04/2011 Age: Midlife Crisis Posts: 135 Rally Car: I have two crap boxes |
And here this whole time I was more worried about those big trees going by outside the window at 0 rpm!!!  Yeah, I don't want anything up in my ass like timmo either....
In all seriousness, thanks for the input john. 
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