It can be compressed to absorb energy in the event of a crash, so is also known as a "collapsible drive shaft". German Patent DE19623184 . all have a slip joint on the rear shaft. Clay_916 [OP] Well-Known Member. Joined: May 2005. Proper drive shaft phase (double cardan)? Slide into the eyes of the yokes 2 bars which are a snug fit. Constant Velocity (C.V) (Double Carden) Driveshafts: The real benefit to a C. V. (double cardan) drive shaft is smoother operation at higher operating angles and longer life. A reason to use the two-piece style drive shaft is because the angle of the U-joint may be too great if the drive shaft were just a single piece. We need to determine if the two shafts are in line, or if not, how far they are out of line. Do not disassemble your drive shaft slip assembly unless it is absolutely necessary. If it is a 2 piece d/s then there are a few ways to screw up the mechanism if you took it apart, but will await your response on why you removed it and what for ron Posted By: mechttu Re: Forgot to mark driveshaft before removal... - Tue Nov 03 2009 07:03 PM >> "couple of things to consider. Joined: Jul 30, 2015 Member: #160686 Messages: 1,455 Gender: Male Fort Collins, CO Vehicle: 2000 x-cab 4x4 5100's, All Pro 3" Standard leafs, 32" KM 2's. TRUE or FALSE? Discussion in 'Technical Chat' started by Clay_916, Feb 25, 2016. A drive shaft typically requires the use of joints to allow power to transfer smoothly as the drive shaft follows the movement of the suspension system. This is easy to draw, but not so easy to describe. I stuck it back together and now get a slight wobble out of balance vibration that starts at 35 MPH and ends at 40. Driving conditions too extreme for driveshaft: Increase driveshaft strength. Being a multi-step process, a good mechanic will check for any tolerances in the U-joints and run out any tolerances on the tubing, all while making sure it’s corrected. But then goes on to talk about U-joint angles, and if the angle at each U-joint is different, there will be vibration. The two yokes between the center cross-pieces inside the yokes must be aligned. the cars were too short (about 1"), it was pulling on the center support and blowing them out quickly (6 months). So having said that, I completely understand that a one-piece shaft would resolved everything! The two main reason to run a 1 piece driveshaft is that there is less rotating mass which helps the car accelerate faster and with a 1 piece you dont have a carrier bearing or the rubber donuts to deal with. Check for any excessive play in the splines. Fig. There are several small metal weights stamped on to both drive shaft sections. For a 40 inch driveshaft that is out of line by 1.5 inches, the driveshaft to pinion and driveshaft to tranny shaft angles would be 2.15 degrees. Post Reply. I was searching for an hour or so last night and didn't find that link. Rephase driveshaft and balance. Two-piece drive shaft; Slip-in-tube drive shaft; The slip-in-tube drive shaft is a new type that improves crash safety. This fact will help you understand the how's and why's of driveshaft measurement. Abstract: A two-section semi-flexible shaft couple forms part of a drive train for e.g. Inspect U-Joint and clamps for wear or looseness, replace if required. These evolved from the front-engine rear-wheel drive layout. Another link w/pictures another picture Re: 2-piece driveline synchronization, or phasing. Pfc_weiss. If all else fails & I can't eliminate the vibration then I will get a one-piece driveshaft made. obstacles that must be avoided. If you are not sure whether the two shafts are put together correctly, pick up a book that shows you the proper assembly. The tube of the yoke is splined on the inside and it engages splines on the transmission output shaft. The rear of the DS bolts to the rear axle. 1986 C10 with TH400 and two piece drive shaft. In a S550 application I cannot see an issue with a one piece carbon driveshaft unless Ford has intentionally for packaging reasons set the transmission output flange and the pinion angle way out of phase. Optimize trucks running upgraded transmissions and converters with a one-piece driveshaft made from Sonnax aluminum yokes and tubing. It speaks to the driveshaft yokes having to be in phase. 03-25-04 03:08 PM - Post# 416768 In response to Jay727 Never mind about the phasing, I guess it's right according to THIS. If this is a two piece driveshaft, make sure that the splines in the shafts are located in the right position. I replaced U-joints a while back and forgot to make a mark where the two drive shafts hook together right after the carrier bearing. a diesel engines or ship's propulsion system. Think of measuring for your driveshaft as simply measuring from point A to point B, with a point C tossed in there for a two-piece driveshaft. Flange Types: Fixed Flange vs Slip Yoke. A two-piece bolt-together design can make driveshaft removal much easier. i have 2 cars, 1 truck with the 2 piece and have no problems. [ March 2, 2021 ] How To Make a DIY Wooden Slapper for Metalwork DIY Projects [ March 1, 2021 ] Scallop Paint Job Ideas and Examples Ideas [ March 1, 2021 ] How To Paint a Bare Metal Effect on Any Surface DIY Projects [ March 1, 2021 ] How To Make a Custom Air Scoop from Scratch and Scrap DIY Projects [ February 28, 2021 ] How To Choose the Right Aftermarket Headers for Your Vehicle … #557016 Sun Jul 19 2009 11:36 PM. “IN PHASE” “OUT OF PHASE” or “PHASED” 2. To measure driveshaft angles and U-joint angles, start by lifting the vehicle either on a drive on style vehicle lift, or an axle contact style. This will keep the suspension under load and allow for correct measurement. Prop shaft repairs can be handled by shipping your failed driveshaft to a re-manufacturing facility and having them rebuild it. Fig. Multi Piece driveshafts usually have all yokes aligned for best operation. In an IRS car there is little to no movement of either the trans or diff, unlike a solid rear axle car that articulates in multiple directions. The objective of my original question is to get input on the two-piece design NOT a solution outside of that design. The Sportage has two sets of splines—one at the transmission output shaft and the other at the driveshaft center bearing. That gets the me to wondering if Polaris isn't adjusting the driveshaft yoke angle, phasing, to counteract for U-joint angles. The front of the DS slips into the transmission. i have the driveline shop put a slip joint in (like front shaft on 4x4) and cut it an 1" longer (and balance the shafts). … Feb 25, 2016 at 11:52 AM #1 #1. Lexington, VA. G. Grigg. Scribe alignment marks on the driveshaft and flange of the rear axle, and transfer case or transmission. If the driveshaft is bent, it will have to be replaced. Fig. These two sources are contradicting each other. If the transmission yoke ear faces the side and the rear end yoke ear faces up, then the driveshaft could be phased wrong. This is extremely important since the shaft could self-destroy and cause damage or injury. True. Four wheel and all-wheel drive. ends of the driveshaft. As the suspension travels, a conventional 1 piece DS slips in and out of the "slip sleeve" (my term) at the transmission. Thats how my driveshaft is installed. How To Shorten A Driveshaft on this episode of Two Minute Tech!For more automotive content, visit PowerNationTV.com! This factory two-piece is a POS granted. This video shows how to remove the drive shaft / driveline on a Ford F-150. Most TREMEC Magnum and TKO installations into muscle cars and hot rods will use a single-piece driveshaft. Look along the shaft from one end, and the two bars must be parallel. Multi Piece driveshafts usually have all yokes aligned for best operation. For most offset late models, I have found the two to be out of line by 1.0 to 1.5 inches. Kind Code: A1 . In this video, we're showing how we shorten driveshafts, with the limited tools, and money, that we have.. True. Here's … There are reasons that yoke type driveshafts are to be assembled per these sketches. The driveshaft must be assembled with the two yokes in correct alignment. If an out-of-phase condition exists, it will promote vibration. “Out of phase” shaft assemblies have lug ears that are not in alignment at both ends, but are offset by a prescribed angle. Long wheel base cars, lowered cars, hydraulic and “X” frame cars all fall into this category. Make sure your drive shaft is in phase… the same phase as it was in when it was manufactured. The driveshaft must be able to accommodate this motion. The 2 piece drive shaft (DS) is meant to prevent the drive shaft from pulling out under extreme axle movement. The front driving yoke is in phase with the final driven yoke. 4: Indexing the splined shaft with the slip yoke-two-piece shafts. At most modern-day facilities, they will have a computerized driveshaft balancer on hand, which is often able to balance up to a four-piece driveshaft, depending on the specification of the equipment. Driveshaft too long or too heavy: Change to a 2 Piece or aluminum driveshaft. The carrier bearing is one of the weakest links and highest maintenance costs associated with the two-piece driveline.