Ebay version of Delrin door Bushings?
#43
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I'm using 20 year old door blocks because I'm into the vintage look.
I'm still trying to determine how these improve chassis rigidity when door latch and hasp are metal and door hinges are metal. The device appears to be a guide to assist with lining up the latch and it may serve as an anti-rattle device, but it doesn't appear Mazda designed it to be structural.
I'm using frame rails and door bars so this is a useless device even if it added something for others, which I doubt.
I'd like to see the frame deflection testing that was done to support the claims being made by any of the vendors. Claims with only anecdotal evidence are suspect. Claims without data are suspect.
I'm still trying to determine how these improve chassis rigidity when door latch and hasp are metal and door hinges are metal. The device appears to be a guide to assist with lining up the latch and it may serve as an anti-rattle device, but it doesn't appear Mazda designed it to be structural.
I'm using frame rails and door bars so this is a useless device even if it added something for others, which I doubt.
I'd like to see the frame deflection testing that was done to support the claims being made by any of the vendors. Claims with only anecdotal evidence are suspect. Claims without data are suspect.
#50
i could understand the rigidity argument if what wrapped around the bushings wasn't 0.5mm stamped steel
make the bushing and a new "cup" that's thicker and yeah I could take that argument at face value.
Until then do like FM did when they released their frame rails. Measure chassis deflection with them and without. But that's not likely to happen.
make the bushing and a new "cup" that's thicker and yeah I could take that argument at face value.
Until then do like FM did when they released their frame rails. Measure chassis deflection with them and without. But that's not likely to happen.
#52
GarageStar pretty much exists on doing knock offs. Admittedly, pretty high quality knock offs, with slight design changes from proven money makers. But still precious few truly original ideas, just the same old stuff with good execution. It's no more a copy of GarageStar than GS was a copy of Ken Auto.
I got on the hype train and bought a set. Yes, I know they didn't stiffen my chassis. But damn if they didn't help with rattles and cowl shake. On this new car I'll probably try pinching the cups. Once in a while I'll trade the monies for warm fuzzies, and this was one of those times where I was totally satisfied with my decision.
I got on the hype train and bought a set. Yes, I know they didn't stiffen my chassis. But damn if they didn't help with rattles and cowl shake. On this new car I'll probably try pinching the cups. Once in a while I'll trade the monies for warm fuzzies, and this was one of those times where I was totally satisfied with my decision.
#53
A few clarifications:
-The original Miata door bushings came from a small vendor in Japan. Garagestar lifted the idea, just like we are doing.
-They make a big difference in NVH, very much worthwhile.
-Several Acetal formulations will work. Delrin is a Dupont tradename for a whole family of acetal nylon/resin formulations. Silly to use it as you're paying double just for the name. That's like insisting on Kleenex.
-The original Miata door bushings came from a small vendor in Japan. Garagestar lifted the idea, just like we are doing.
-They make a big difference in NVH, very much worthwhile.
-Several Acetal formulations will work. Delrin is a Dupont tradename for a whole family of acetal nylon/resin formulations. Silly to use it as you're paying double just for the name. That's like insisting on Kleenex.
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#56
UHMW has nice low friction and stiffness properties but will eventually cold form (change shape). Keep an eye on that. The right acetal nylon compound will resist cold forming. Mech properties are really close to a non heat treated or T-3 block of 6061. We like to use UHMW for skid runners under splitters.
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#59
I put a set of the Garage Star ones on my street Miata, they seemed to reduce vibration over bumps. I just don't see any reason to put them on a caged car, I don't think there's anything to be gained.
The Ken Auto blocks have a different shape than the GS blocks. The GS blocks need a bit more adjustability for some Miatas for the doors to close without slamming them. Expensive vs cheap is in the eye of the beholder.
The Ken Auto blocks have a different shape than the GS blocks. The GS blocks need a bit more adjustability for some Miatas for the doors to close without slamming them. Expensive vs cheap is in the eye of the beholder.
Last edited by wannafbody; 03-31-2016 at 09:52 PM.