The custom fabrication thread! (Post pics of stuff you have made)
#122
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I'm making things that are pretty costly pieces, i can't be off half a thousandth just because my square is off. I'm not trying to offend you or anything, i am just questioning their prices.
I've searched around in CL a little bit, it seems pretty dry for my area. I'm not a machinist, but i want to get quality stuff. (mitutoyo Starrett)
#123
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Shars is the same chinese crap as Harbor Freight and others, just without the mark-up. I've bought from him several times. Also, check out Discount Machine (eBay), which is another one man operation that sells cheap. I've used both, with no regrets.
If you want to get Starrett, you're gonna pay. No way around that, not even used.
If you want to get Starrett, you're gonna pay. No way around that, not even used.
#127
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Thanks for all the great replies. Looks like i can spend most my money at amazon, and ebay. Then probably get a couple non essential things off shars or harbor freight.
I need quality squares that's for sure, and it looks like i'm going to pay. Dang fabrication.
I need quality squares that's for sure, and it looks like i'm going to pay. Dang fabrication.
#136
FYI for the people interested in low cost measuring high quality stuff I just got this email from Enco.
Save Up To 25% on Mitutoyo + Free Shipping!
I think that link should work. You see that they have waterproof digital calipers. Why would you need that? I've killed a couple harbor freight digital calipers by getting 1 drop of coolant (from the mill or lathe) on the slide and then moving the caliper over the drop. Either get the water proof ones, or only use analog calipers where there is even the slights chance of wetness.
Save Up To 25% on Mitutoyo + Free Shipping!
I think that link should work. You see that they have waterproof digital calipers. Why would you need that? I've killed a couple harbor freight digital calipers by getting 1 drop of coolant (from the mill or lathe) on the slide and then moving the caliper over the drop. Either get the water proof ones, or only use analog calipers where there is even the slights chance of wetness.
#137
Boost Pope
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Disclaimer: I'm not a suspension guru.
Question: The function of the third damper being what? To go between the two sides of the suspension? Would said damper also have a spring? Wouldn't this act as the opposite of an anti-sway bar?
The only frame of reference I have for anything resembling this is the so-called "zero roll" suspensions that seem to be popular amongst the Formula Super-Vee crowd, wherein a single, centrally-mounted coilover is used to suspend and dampen both the left and right sides, using a swing-axle design.
It sort of makes sense in that application because... well... because swing-axle. (Which is like saying that swan-diving into a pool of boron makes sense, presupposing that you have already deliberately set yourself on fire.)
What I can't even begin to rationalize is this:
Question: The function of the third damper being what? To go between the two sides of the suspension? Would said damper also have a spring? Wouldn't this act as the opposite of an anti-sway bar?
The only frame of reference I have for anything resembling this is the so-called "zero roll" suspensions that seem to be popular amongst the Formula Super-Vee crowd, wherein a single, centrally-mounted coilover is used to suspend and dampen both the left and right sides, using a swing-axle design.
It sort of makes sense in that application because... well... because swing-axle. (Which is like saying that swan-diving into a pool of boron makes sense, presupposing that you have already deliberately set yourself on fire.)
What I can't even begin to rationalize is this:
#138
Joe, a 3rd damper/spring is for pitch control. How it works is, the 3rd damper does nothing in roll, nothing at all. The unit moves side to side without compressing. Now if both wheels move up at once the normal springs dont compress but the 3rd damper does. This lets you run good single wheel rates to keep the best tire contact you can and good roll rates (with help of a swaybar) while having very high pitch rates to minimize dive in braking and squatting during acceleration. Have you read the optimum G articles on springs and dampers? I think you'll enjoy it.
#139
Boost Pope
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So it's similar to the FSV setup, then. In that design, the spring and damper serve to translate upward force from the outside wheel to downward force on the inside wheel during a turn.
In roll, this configuration provides no resistance whatsoever. 100% front roll couple.
I can't quite grasp how you'd configure a suspension such that both outer dampers absorbed 100% of equal compression load, leaving the center damper static except when one wheel is subjected to more compression load than the other. I can see the outers and inners sharing the load in such a situation...
Wasn't even aware of the Optimum G articles. Reading now.
In roll, this configuration provides no resistance whatsoever. 100% front roll couple.
I can't quite grasp how you'd configure a suspension such that both outer dampers absorbed 100% of equal compression load, leaving the center damper static except when one wheel is subjected to more compression load than the other. I can see the outers and inners sharing the load in such a situation...
Wasn't even aware of the Optimum G articles. Reading now.