has anybody tried 3/4 in grade 8 bolts in place of the linkpins to keep them from loosening up. if so how did it work?

I wonder how well say a 3/4" shoulder bolt would work?

Let me know how it works, I am always tightening my link pins

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That is kinda what I have on my Combo spindles. I have bent them twice this year.

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did you have bolts instead of linkpins and that is what you bent,or did you bend the actual spindel or the kingpin that runs vertical? i have bent linkpins in the past,i just know how strong the linkpin is compared to the grade 8 bolt. i just repleced the drivers side with bolts on my buggy so far so good ,i guess will really try it out at coal creek in a couple of weeks if the hill is as good as the last one

Just the linkpins that come with the Tweed combos. They are a bolt, not sure on the grade.

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They are not bolts, but aftermarket linkpins that have a nut on the end. They make them for stock and aftermarket arms. http://www2.cip1.com/ProductDetails.asp?ProductCode=C26%2D405%2D055

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A broken clock is right two times a day.

Wonder if that first set you listed does any better? About $20 less a set.

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The trick is keeping them tight! A grade 3 bolt that is snug is just about as strong as a grade 8 thats loose. Run 2 jam nuts on your link pins and KEEP THEM TIGHT and you'll be just fine

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Maybe you should chug on over to mamby pamby land....

Sounds good, there is plenty of room.

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i actually welded a piece on the end of the trailing arm so i could thread the bolt through then put a jam nut on the inside,so bolt cant turn . it looks like its gonna work pretty good,this is kinda a trial run if it does i`ll weld up some new arms.

His add shows them being made of Chromoly. Last I talked to Steve at Tweeds he said they were mild steel. Looks like he took my advise and went to the CM. His earlyer versions bent with a very little effort.

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Water cooled Dry Sumped Subaru Powered Turbo Charged Fuel Injected 2500CC Tank. Oh Rah! He who dies with the most Toys not only wins, He also wears them out!

I bent his quickly too! then I went to saco cromoly and broke them (bad batch) Then I went to 300m pins that were fine

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Maybe you should chug on over to mamby pamby land....

I bent the SACO Chromoly too!

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Water cooled Dry Sumped Subaru Powered Turbo Charged Fuel Injected 2500CC Tank. Oh Rah! He who dies with the most Toys not only wins, He also wears them out!

We just use grade 12 bolts, polish 'em up with a bit of emery and send 'em to have a few dozen electroless zinc plated - last longer and much smoother operation then.
And they're cheap as chips.

so you dont think the grade 8 bolts will hold up?

I race with a few guys that run 7/8 grade 8 bolts that hold up fine. Give it a shot!

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Maybe you should chug on over to mamby pamby land....