Re: TIG Rods For Welding Jag Drive Shafts?
ok thanks for that, I was talking to an retired AP lockeed development engineer about this, he sugggested that I should bore out the solid forgings say 1/2", but not right through to the ends, i like the sound of that.
|
Jim Stabe Jim Stabe San Diego, Ca (829 posts) Registered: 02/28/2009 10:01AM Main British Car: 1966 MGB Roadster 350 LT1 Chevy |
Re: TIG Rods For Welding Jag Drive Shafts?
Art - You aren't going to "tap out" a .004 press fit if you mess up the clocking.
|
Jim Stabe Jim Stabe San Diego, Ca (829 posts) Registered: 02/28/2009 10:01AM Main British Car: 1966 MGB Roadster 350 LT1 Chevy |
Re: TIG Rods For Welding Jag Drive Shafts?
If you are doing the .004" press fit for strength then leaving the other end loose defeats the purpose. It's that "weakest link" thing. The strength comes from the weld.
|
roverman Art Gertz Winchester, CA. (3188 posts) Registered: 04/24/2009 11:02AM Main British Car: 74' Jensen Healy, 79 Huff. GT 1, 74 MGB Lotus 907,2L |
Re: TIG Rods For Welding Jag Drive Shafts?
.004" press is all relative. Thin tubing in that diameter has "stretch". Just did one for my 1 T. diesel truck. Heavier wall and .003-.004" press. Likely I could have drove around the block, un-welded. I'm NOT suggesting. I suspect IF you got index off by 1/16", not likely to feel it. More important, it is straight. Art.
|
Re: TIG Rods For Welding Jag Drive Shafts?
Im trying to add a pic.......question I need to change my stud PCD, I would like to keep the same wheel studs all round, do you think 4 stud's will cope on a mgbgt with 400 bhp?
|
|
MGBV8 Carl Floyd Kingsport, TN (4512 posts) Registered: 10/23/2007 11:32PM Main British Car: 1979 MGB Buick 215 |
Re: TIG Rods For Welding Jag Drive Shafts?
"do you think 4 stud's will cope on a mgbgt with 400 bhp?"
Yes, I do. There are many, many heavy hitter Hondas & Miatas still running 4 lug wheels and doing it at the dragstrip & on road courses. |
Re: TIG Rods For Welding Jag Drive Shafts?
Ive drilled the hubs to MGB PCD 4 stud, as Id rather have the same all round. Ill be mounting the axle in the car soon.Thanks for all the help!
|
Re: TIG Rods For Welding Jag Drive Shafts?
On the off chance that you need to utilize TIG you presumably ought to do a hefty preheat and utilize a great deal of filler bar. Yet, with that much warmth in a little zone steps should be taken to dodge warpage, for example, by rotating sides. The weighty preheat will likewise help significantly paying little mind to the technique you use.
|
Re: TIG Rods For Welding Jag Drive Shafts?
It relies upon what material the "cast" drive shaft closes are made of. Cast iron or cast steel. I particularly question they are solid metal so I will answer dependent on them being projected steel.
The welding relies upon the synthetic piece of the projecting, as it has a critical obligation you can anticipate that it should contain raised chrome and manganese levels for strength, yet with this would come expanded degrees of carbon and potential for hardness. To beat higher carbon content I would recommend a high preheat of the projecting (400c in addition to) before welding and keep up this warmth during welding in the event that you can. At that point envelop by high temp protection straight in the wake of welding (exhaust wrap on the off chance that you have it) to control the cooling rate. I would actually utilize a 1% nickel wire to give additional strength yet additionally to add some extra alloying component to the cast/weld pool zone. A decent marker to check for expanded carbon and hardness is to perceive how a tack weld acts. Do a respectable tack weld on the material (when cold) that weakens both parent materials (cast and CDS) and afterward attempt and move it or adjust it until it breaks. At that point check the area of the crack ( mid weld/on the cast as we approve of the CDS) in the event that it breaks simple and shows a dim fine grain you have high carbon. On the off chance that flexes and yeilds and shows a roughish grain, it may not be high carbon as it showed pliable crack properties. Whatever you have, pre and post warmth is vital. Expectation this makes a difference. |
Re: TIG Rods For Welding Jag Drive Shafts?
|
BlownMGB-V8 Jim Blackwood 9406 Gunpowder Rd., Florence, KY 41042 (6470 posts) Registered: 10/23/2007 12:59PM Main British Car: 1971 MGB Blown,Injected,Intercooled Buick 340/AA80E/JagIRS |
Re: TIG Rods For Welding Jag Drive Shafts?
Depends on how you build it Tim, it can be basically whatever you want. What you need to watch closely is the clearance between the uprights and the MG frame members. That will determine minimum possible ride height as well as suspension travel. Inner fender/tire clearance runs a close second.
Jim |
|
Re: TIG Rods For Welding Jag Drive Shafts?
Im going to add box section above the frame sections then remove as required to get me the full clearance I need, what ride height did that give you? thanks
|
BlownMGB-V8 Jim Blackwood 9406 Gunpowder Rd., Florence, KY 41042 (6470 posts) Registered: 10/23/2007 12:59PM Main British Car: 1971 MGB Blown,Injected,Intercooled Buick 340/AA80E/JagIRS |
Re: TIG Rods For Welding Jag Drive Shafts?
Depends on tire size and suspension travel on the compression side, which depends on spring rate and coil-over mounting angle. Don't get your upper mount too close to the bodywork. Also depends on what part comes closest to the body. For reference, use the diameter of your stock axle height of the bump stop, and of the bump stop pad on the axle. Shouldn't be too hard to do better than that.
Jim |
Re: TIG Rods For Welding Jag Drive Shafts?
Yeah ok, now Im working out ride hights its rather high at the front, I have 15" wjheels & a chrome bumper front clip, I'll have to modify the the stub axle's to get the front down, at the moment its just too high.
|
Re: TIG Rods For Welding Jag Drive Shafts?
|