Ralph Wiggum Moar Powar Babeh Lifetime Members 19,323 Member For: 19y 4m 30d Gender: Male Location: Perth Posted 08/06/15 08:14 AM Share Posted 08/06/15 08:14 AM I disagree.... 1 Link to comment Share on other sites More sharing options...
"Captain Retard" Member 1,417 Member For: 10y 9m 20d Gender: Male Location: Shellharbour NSW Posted 08/06/15 10:53 AM Share Posted 08/06/15 10:53 AM ^^^so you disagree and.........I can't be bothered waiting any longer so I'm going to bed. Link to comment Share on other sites More sharing options...
Ralph Wiggum Moar Powar Babeh Lifetime Members 19,323 Member For: 19y 4m 30d Gender: Male Location: Perth Posted 08/06/15 10:57 AM Share Posted 08/06/15 10:57 AM Most if not all modern live axle vehicle s run a multi piece tails shaft (inc ford utes) some larger commercial will even run multiple hanger bearings.*respectfully disagree.Oh and good night Link to comment Share on other sites More sharing options...
"Captain Retard" Member 1,417 Member For: 10y 9m 20d Gender: Male Location: Shellharbour NSW Posted 08/06/15 11:15 AM Share Posted 08/06/15 11:15 AM That's cool!I'm for the most part still stuck in the 70s when it comes to cars.I've seen the multi shafts on trucks but never realised about the later model live axle stuff.Will have to check it out!Ni-night Link to comment Share on other sites More sharing options...
eff xr6t Member 569 Member For: 11y 4m 23d Posted 08/06/15 11:43 AM Share Posted 08/06/15 11:43 AM To add to the tailshaft topic I have a 3.5imch chro moly shaft with 1350 series unis in my El falcon which is obviously live axle but I definetly noticed vibration increase with the bigger diameter shaft not huge but it's definetly there. I would go a 2 piece in one of these for the fact of being able to go smaller diameter for the same hp rating and giving more room for the exhaust. 1 Link to comment Share on other sites More sharing options...
Wilko16 Donating Members 1,672 Member For: 17y 3m 1d Gender: Male Location: Melbourne Posted 08/06/15 12:07 PM Share Posted 08/06/15 12:07 PM That is a big heavy shaft...High speeds could be very dangerousSingle piece is why old Falcons were speed limited to 180 Link to comment Share on other sites More sharing options...
Ralph Wiggum Moar Powar Babeh Lifetime Members 19,323 Member For: 19y 4m 30d Gender: Male Location: Perth Posted 08/06/15 12:36 PM Share Posted 08/06/15 12:36 PM Lol...big heavy shaft. Link to comment Share on other sites More sharing options...
eff xr6t Member 569 Member For: 11y 4m 23d Posted 08/06/15 12:50 PM Share Posted 08/06/15 12:50 PM Haha Yeh it's big and heavy I'll weigh it next time it's out but I'd say it's the same weight as a stock shaft. I'll test out the speed theory next year at racewars 1km foot to the floor should see if it'll break. Link to comment Share on other sites More sharing options...
10SECN Member 516 Member For: 11y 9m 20d Gender: Male Location: west hoxton Posted 08/06/15 09:14 PM Share Posted 08/06/15 09:14 PM Porsche CV FTW.You then have the forgiveness that a CV offers alignment wise.u gotta link mate ?????? ... I don't wanna use a uni !!!! Link to comment Share on other sites More sharing options...
Peppy_t92 Silver Donating Members 748 Member For: 11y 10m 19d Gender: Male Location: Liverpool Posted 09/06/15 10:31 AM Author Share Posted 09/06/15 10:31 AM Alright I spoke to two of the bigger driveshaft shops that I know of.. Hardie Spicer and Gibson Shafts... So to break it down, the std shafts are designed purely with standard power levels, ride height, comfort, serviceability, and cost in mind just as the rest of the car isA two piece shaft is a must, due to a few reasons, most have been mentioned above.. The length and space/clearance... A longer tube needs to be bigger and thicker to have the same torsional strength as a shorter thinner tube, in our case, it would need to be a massive shaft It gives us proper ground, exhaust, and handbrake cable clearance.. Then the CV is necessary at the back to allow for the high pinion angle and all the movement in the diff, I.e acceleration and decelerationThis is just my interpretation of the info I was given Now Hardie Spicer said there's only one way to do it to make it last and that's my way! Change the yoke on the gearbox and diff, to suit some big uni joints, and install a big centre bearing.. It will be noisy, it will vibrate and it will cost upwards of $2k... I suggested the cv Idea and mentioned that I wanted to retain the rubber coupling at the back of the box, he said I can't help you then lolNext was Gibson, his 1000hp shaft couples directly to the back of the box, then a bigger centre bearing, Dana Spicer 4340 uni joint, a slip joint and another Dana Spicer Uni with a flange that suits the std flange on the diff...I said I was worried about the noise and vibration that people had felt with his shafts before, he told me that every falcon he has seen needed different packing to get the right angle which helps reduce vibration and noise dramatically and that he has just bought a new state of the art electronic balancing machine so the NVH should be non existent to minimal... I mentioned the Porsche CV idea and he took it on board, said it can be done but doesn't think it's necessary, also that the ford cv should be strong enough, and most snapped cv's he had seen were due to excessive diff movement from stuffed or soft bushes, which makes sense... He's still going to look into the Porsche CV and get back to me tomorrow but suggests it's going to be expensive, straight from Germany... He was great to talk to and answered everything I had for him, we were speaking for a good 30-40minsI also got in contact with someone that installed the Gibson shaft just last week and he said there is zero noise or vibration, so if that's the case, I'm happy to stick with the Uni's.. Easier to replace then a cv I guessThanks Joe 3 Link to comment Share on other sites More sharing options...
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