Popular Post Roman Posted March 29, 2017 Popular Post Share Posted March 29, 2017 I've loved to piss and moan about how I think these are annoying and a stupid idea. But after having a driveshaft fail at 80ish kph on the weekend, Oh boy am I glad I had these loops fitted! My brake and fuel lines would have taken a hammering if not for these - They are a good idea, even in my case where all factory parts were used within factory power levels. 28 Quote Link to comment Share on other sites More sharing options...
RUNAMUCK Posted April 2, 2017 Share Posted April 2, 2017 I bet your arsehole took a huge bite out of the seat when that happened! I recall seeing a kp starlet at the drags with a ca18det and a 75 shot on slicks blow a front uni joint. It had hoops etc. But it still made quite a mess. (Tail housing of the cogbox was scrap metal only.) I took a gander under the back after it was loaded onto the trailer. I remember thinking, you know I should probably fit a hoop to my car one day. That one day never actually came. Which is probably why it's a requirement for cert. /wats cert? 1 Quote Link to comment Share on other sites More sharing options...
sentra Posted April 4, 2017 Share Posted April 4, 2017 What if your wheel falls off? Should we fit wheelyloops? Dave? Dave? Rules can gtfo 7 Quote Link to comment Share on other sites More sharing options...
Popular Post Hyperblade Posted April 7, 2017 Popular Post Share Posted April 7, 2017 Mine at a slightly higher speed, driveshaft was a pretzel. Very glad for loop... 15 Quote Link to comment Share on other sites More sharing options...
Popular Post Snoozin Posted April 18, 2017 Popular Post Share Posted April 18, 2017 The constant here, is Beams. If we banned the Beams 3S, then clearly no requirement for driveshaft loops 22 Quote Link to comment Share on other sites More sharing options...
xsspeed Posted April 18, 2017 Share Posted April 18, 2017 beams power Quote Link to comment Share on other sites More sharing options...
Popular Post Threeonthetree Posted April 18, 2017 Popular Post Share Posted April 18, 2017 That's why we banned the 1100 Kent with extractors. Driveshaft twisting torque. 11 Quote Link to comment Share on other sites More sharing options...
Roman Posted April 18, 2017 Author Share Posted April 18, 2017 5 hours ago, xsspeed said: beams power I think your car is safe for the next 10 years then 5 Quote Link to comment Share on other sites More sharing options...
xsspeed Posted April 18, 2017 Share Posted April 18, 2017 Iceburn.gif 2 Quote Link to comment Share on other sites More sharing options...
Celica RA45 Posted August 9, 2017 Share Posted August 9, 2017 how long is the tailshaft in the starlet from back of box to diff flange and what revs were you doing and what gear Quote Link to comment Share on other sites More sharing options...
Hyperblade Posted August 10, 2017 Share Posted August 10, 2017 23 hours ago, Celica RA45 said: how long is the tailshaft in the starlet from back of box to diff flange and what revs were you doing and what gear 1120mm, 7600rpm, 6th (0.869 ratio) 1 Quote Link to comment Share on other sites More sharing options...
Celica RA45 Posted August 10, 2017 Share Posted August 10, 2017 ok to long ,go to a 2 piece ,doesnt matter if you go bigger in dia it will still whip and snap in the middle .so if you were doing 7600 i 6th the tailshaft would be over 8600 rpm Quote Link to comment Share on other sites More sharing options...
Celica RA45 Posted August 10, 2017 Share Posted August 10, 2017 im doing 8800 in 5th which is overdrive of .880 with a 4.6 ratio .i dont have any problem with my 2 piece .but i did change the bolt together part of the 2 shaft to upgrade to ra60 as i was twisting the splines on the center at the carrier Quote Link to comment Share on other sites More sharing options...
Hyperblade Posted August 11, 2017 Share Posted August 11, 2017 19 hours ago, Celica RA45 said: ok to long ,go to a 2 piece ,doesnt matter if you go bigger in dia it will still whip and snap in the middle .so if you were doing 7600 i 6th the tailshaft would be over 8600 rpm 18 hours ago, Celica RA45 said: im doing 8800 in 5th which is overdrive of .880 with a 4.6 ratio .i dont have any problem with my 2 piece .but i did change the bolt together part of the 2 shaft to upgrade to ra60 as i was twisting the splines on the center at the carrier What caused it was the crap rear universal that i had just installed. I have gone to a larger shaft with stronger universals, 2 piece would be nice but not feasible at the moment without a lot of work. Quote Link to comment Share on other sites More sharing options...
Celica RA45 Posted August 11, 2017 Share Posted August 11, 2017 ok test it out but it will whip again just weld in a commodore center carrier bracket or get 1 from a toyota that has 2 piece most do from ta22 to rt132 coronas and carinas etc even cressida Quote Link to comment Share on other sites More sharing options...
cletus Posted August 11, 2017 Share Posted August 11, 2017 There are calculators you can Google that give a max safe rpm for driveshaft length vs diameter vs wall thickness etc. In related sharnery, I suspect a factory valiant driveshaft must be on the limit of safe for high speed use, when I had the turbo motor in my vg, doing sustained cooling system tests in 3rd gear at 5k rpm it would get a weird vibration that it never got any other time. I did read a story on another forum where a valiant shaft let go somewhere over 200 kph, broke the gearbox off the engine as well 1 Quote Link to comment Share on other sites More sharing options...
RUNAMUCK Posted August 12, 2017 Share Posted August 12, 2017 What about pulling 5k in top while moving? Quote Link to comment Share on other sites More sharing options...
Celica RA45 Posted August 12, 2017 Share Posted August 12, 2017 its a frequency harmonic issue that causes them to whip any motor that goes over 6500 rpm in 4 cyl uses a 2 piece ,ford falcon with alloy shaft is limited to 180 kays ,turbo falcon is different thou . Quote Link to comment Share on other sites More sharing options...
cletus Posted August 12, 2017 Share Posted August 12, 2017 48 minutes ago, RUNAMUCK said: What about pulling 5k in top while moving? I did once and it did the vibration thing so I didnt do it again 1 Quote Link to comment Share on other sites More sharing options...
RUNAMUCK Posted August 13, 2017 Share Posted August 13, 2017 18 hours ago, cletus said: I did once and it did the vibration thing so I didnt do it again Based on said Google calculations, what's the maximum safe speed for a valiant drive shaft do you think? I only ask as it's only a matter of time before a certain hardtop might see somewhere around 6k. (There's plenty of road straight enough out that ways) Quote Link to comment Share on other sites More sharing options...
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