F.A.Q.    Register    Login    Home Members    Search

Toymods » Tech & Conversions » Titanium conrods and cycle fatigue Show: Today's Posts  :: Show Polls  Email to friend

Author	Topic
gold28 Forums Junkie Location: Madrid - Spain Registered: August 2002	Re: Titanium conrods and cycle fatigue Tue, 14 September 2004 12:35 gianttomato wrote on Sat, 04 September 2004 11:35 Apparently the usual alloy for Ti conrods is Ti 6-4 (6Al, 4V - I presume this refers to the amount of aluminium and vanadium in the alloy). Yup the Al and V are the aluminium and vandium content in the alloy. 6Al-4V is commonly referred to as commercial grade titanium. The keys to improved fatigue life are 1. Minimize peak and normal stresses ie reduce revs or reduce piston weight. 2. Remove any crack starters - polish the rod 3. Try and toughen the rod surface to resist cracking. I am not sure about Ti but Ally can be cold worked to improve fatigue cracking. The advantage in ti rods is more that due to the better strength to weight ratio, you can increase the cross sectional area of the rod and reduce the stress (increase strength) and still reduce the weight. Obviously the ratio of these depends on how long you expect the engine to last. As someone mentioned earlier, reducing piston weight will have a big effect on what your safe RPM will be. However once again this is a balancing act as it may then struggle with heat dissipation. [Report message to a moderator]

	Subject	Poster	Date
	Titanium conrods and cycle fatigue	gianttomato	Sat, 04 September 2004 01:35
	Re: Titanium conrods and cycle fatigue	shinybluesteel	Mon, 06 September 2004 01:05
	Re: Titanium conrods and cycle fatigue	ed_ma61	Mon, 06 September 2004 01:07
	Re: Titanium conrods and cycle fatigue	oldcorollas	Mon, 06 September 2004 04:57
	Re: Titanium conrods and cycle fatigue	ed_ma61	Mon, 06 September 2004 01:13
	Re: Titanium conrods and cycle fatigue	Lachie	Mon, 06 September 2004 02:03
	Re: Titanium conrods and cycle fatigue	gianttomato	Mon, 06 September 2004 02:20
	Re: Titanium conrods and cycle fatigue	gianttomato	Mon, 06 September 2004 02:32
	Re: Titanium conrods and cycle fatigue	justcallmefrank	Mon, 06 September 2004 02:36
	Re: Titanium conrods and cycle fatigue	gianttomato	Mon, 06 September 2004 03:14
	Re: Titanium conrods and cycle fatigue	Bugman	Mon, 06 September 2004 03:03
	Re: Titanium conrods and cycle fatigue	justcallmefrank	Mon, 06 September 2004 03:28
	Re: Titanium conrods and cycle fatigue	Fattony	Mon, 06 September 2004 08:48
	Re: Titanium conrods and cycle fatigue	gianttomato	Mon, 06 September 2004 09:20
	Re: Titanium conrods and cycle fatigue	ed_ma61	Mon, 06 September 2004 03:32
	Re: Titanium conrods and cycle fatigue	gianttomato	Mon, 06 September 2004 04:17
	Re: Titanium conrods and cycle fatigue	SRacin	Mon, 06 September 2004 05:06
	Re: Titanium conrods and cycle fatigue	510rob	Mon, 06 September 2004 06:04
	Re: Titanium conrods and cycle fatigue	Henn	Mon, 06 September 2004 06:38
	Re: Titanium conrods and cycle fatigue	justcallmefrank	Mon, 06 September 2004 10:23
	Re: Titanium conrods and cycle fatigue	SRacin	Mon, 06 September 2004 23:53
	Re: Titanium conrods and cycle fatigue	nicked	Tue, 07 September 2004 04:35
	Re: Titanium conrods and cycle fatigue	oldcorollas	Tue, 07 September 2004 05:44
	Re: Titanium conrods and cycle fatigue	ed_ma61	Tue, 07 September 2004 06:58
	Re: Titanium conrods and cycle fatigue	nicked	Tue, 07 September 2004 06:00
	Re: Titanium conrods and cycle fatigue	ed_ma61	Tue, 07 September 2004 07:09
	Re: Titanium conrods and cycle fatigue	gold28	Tue, 14 September 2004 12:35

Previous Topic:	jza70/jzx90 intercooler
Next Topic:	Springs & suspension

Powered by: FUDforum 2.3.8
Copyright ©2001-2003 Advanced Internet Designs Inc.