quack
Isuzu Senior
Posts: 220
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Post by quack on Jul 11, 2007 19:48:18 GMT 11
in the prosses of making some longer shackels at the moment, got my 14mm ht bolts for them today just wondering what people have used to stop the bushes getting crushed?
im thinkin pipe with inside dia of 14 and outside of 17mm would be best, is there anything else to use?
is there anything common that i can use and is easy to get hold of?
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agin
Isuzu Baby
Posts: 18
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Post by agin on Jul 12, 2007 2:02:42 GMT 11
Is going greasable bolts with polyurethane bushings is not the solution?
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Post by James W on Jul 12, 2007 9:45:34 GMT 11
That is exactly the problem with using bolts, they will crush inwards the sides of the shackles. A partial solution and really a hack is to use stronger plate (>=10mm thick) and use a centre spigot and bolt to help support and space the shackle sides. The better option is pins machined with a shoulder to support the shackle sides just like the original ones. See my website; www.toolsnz.com/james/4wd/shackles/ and the pdf at the bottom of the page. The pins should also be harderned. I machined my own and still have several meters of the hardened rod if you want a couple of pieces. |
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Post by pig75 on Jul 12, 2007 18:21:09 GMT 11
I just used lock nuts on my bolts
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quack
Isuzu Senior
Posts: 220
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Post by quack on Jul 12, 2007 20:24:35 GMT 11
thanks james but i dont have anything to macinine it with. will go to an enginering place tormro and see if i can get some pipe
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Post by James W on Jul 13, 2007 7:58:33 GMT 11
Other options if you can't find some pipe off the shelf are; 1) Take some 17mm dia rod and drill through the length of it to suit what ever bolt you want. 14mm? A very easy job in a lathe. Try your enginnering place should take them no more than 3min to drill one. Strength is reduced to 14mm dia however 2) Take some 17mm dia rod and drill in each end say 1", and tap to suit 1" long bolts of your choice. So no welding, but 4 bolts per shackle. If you are carefull you could do this yourself in a drill press. again the strength is reduced to your bolt diameter. 3) If you are really stuck I could machine some for you... just give me a week or so. I've just moved house. pig75 & agin to clarify for you, the crush we are talking about is if you tighten the shackel bolts the side plates of the shackle are crushed inwards. The width of the shackel can't be maintained like the original with a step/shouler machined on the pins.  Also note, my pdf diagram is the orignal MU shackels for referance. It's not what I made... I beefed up the plates and added a centre bush to help with support in the now much longer plates. |
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Post by pig75 on Jul 13, 2007 13:47:07 GMT 11
pig75 & agin to clarify for you, the crush we are talking about is if you tighten the shackel bolts the side plates of the shackle are crushed inwards. The width of the shackel can't be maintained like the original with a step/shouler machined on the pins. That's why I used lock nuts, that way you don't need a stepped bolt you just firm the first nut then lock it with the second. |
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quack
Isuzu Senior
Posts: 220
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Post by quack on Jul 13, 2007 15:49:09 GMT 11
yeah the only problem with that pig75 is that the thread of the bolts will chew up the bushes, so you would need long bolts with out thread in the middle.
james w, i think i might have something lined up will find out monday, if not then that would be great!!!! thanks
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Post by Harry on Jul 15, 2007 20:27:35 GMT 11
I made stainless bushes with 12mm 8.8 bolts drilled for greasing.The bushes don't rust and with the grease the spring bushes last a lot longer.I wouldn't use urethane bushes again as they're too hard a don't flex enough.
Regards,Harry.
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quack
Isuzu Senior
Posts: 220
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Post by quack on Jul 17, 2007 20:56:13 GMT 11
fitted the shackels today, man did it make a difference, im really happy with the result, they are 200mm long.
going to be a wheel alignment tomoro and will get the fromt leveled
total cost $65 and a free after hours wheel aligment
will post a pick tomoro:)
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Post by mudlark on Jul 17, 2007 21:08:43 GMT 11
Hi there Quack
Can you post a pitcher of them as I am going to see if my mate will have a crack at doing them and what was the lift hight at the end of it all.
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Post by muvit madness on Jul 17, 2007 21:12:32 GMT 11
200mm thats 8" wow whats your overall hieght from the ground to the top of the wheel arch. must be around the metre mark eh? cant wait to see the pics tomorrow. cheers muvit  |
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quack
Isuzu Senior
Posts: 220
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Post by quack on Jul 17, 2007 21:13:34 GMT 11
they lifted the back 35-40mm. very easy to make still have all the daimentions if you want them, will post pic tomoro after i lift the front
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Post by mudlark on Jul 17, 2007 21:28:33 GMT 11
Cool cheers for that good wet weather project  |
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