Yeah. A Chinese distributor would be the best bet for international shipping and purchases.
I just pointed to MtnElectronics and ASF so the US guys could get them quickly while not waiting for the Chinese slow boat.
And since even if you were to buy 5000 springs at a time, the amount would be lower than 800$US, so it would not be subjected to the stupid new 25% tax.
I’m really trying to understand what your saying here and don’t really want this to be polictical but It looks like this is contradicting yourself.
You can ship a item from china to the US and cost the buyer nothing and most all other parts of the world. Once the item reaches the US port the united states postal service has to deliver this item to the buyer, its a great deal for the buyer and seller. If Mtn Electronics ships this same item to you (another country) the cost is to high and makes it unreasonable (No Sale, you buy else where). :person_facepalming: The united states postal service takes the item to the same port the china goods came from so no difference in cost for the united states postal service. So how is this fair to Mtn Electronics.
Maybe I’m missing something here, I thought this was what all the fuss was about having fair trade.
I hope somebody does something because it sure doesn’t seem fair to me.
One simple question Tom Tom…. Why do you insist on making political posts & comments when it is clearly against the rules??? As you surely must know by now….
Do you feel the Forum Rules are beneath you & you need not comply??
What I post is factual (with a bit of discussion).
Fact is that the US is ploughing a path to nowhere.
In the case of e.g Harley, read this and weep:
It’s a big wide world out here, and if the USA ceased to exist we’d be stuffed, for a short while. Nearly saw that when Lehman Brothers collapsed and Merrill Lynch were found out. And the ongoing consequences. Nevermind Enron. Could happen again, confidence is everything until it changes.
But lets back out now, this thread is about springs, of which you Teacher have no specific knowledge to contribute, though are very vocal in all sorts of threads. Consider that a slap-down.
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Have fun.
…… A “slap down” from you Tom Tom… by way of keyboard. Surely you jest.
But you avoided answering the question & just interjected more of your political rhetoric & opinions.
And, one way or another; you have made your ’superior intellect’ very plain in most every thread you post in…… which are many also. I applaude you for being of such high intelligence.
I, on the other hand; am just doing the best I can with the limited IQ I have. Oh well… such is life.
But back to that one simple question. Why do you seem to think it is OK for you to post your rhetoric & opinions that are of a political nature??
You do it fairly often…. and by now surely you must know it is against BLF RULES.
You see, the company which I was going to pay for the samples originally, boosted the price a… bit.
It went for 100$US+shipping, to 135$US+shipping, so quite a bit more expensive.
This is getting quite annoying, and expensive just for some spring samples.
I think I’ll just take the risk, and go with my original plan of just buying the 2000 springs from my original manufacturer, since while the prices are the same from both sellers using BeCu C17530, the one I was going to go with is being just absurd with the samples cost.
Since this is my hobby money, I’m willing to take a risk.
Edit: I’m just going to keep looking for a supplier that is willing to even get 1 spring sample.
And besides, I have Paypal to protect just in case something goes horribly wrong, like springs not being made of BeCu C17530, which is quite easy to test just by its electrical properties.
After careful considerations, I have decided to order the 2000 big springs first since they are the most popular, and I can validate their mechanical and electrical properties much more easily than with a small spring for good reason, and easier to prototype in a light.
Here are the final specs of the spring:
- Material: C17530 (Beryllium Copper) with IACS of 38%
- Spring upper diameter: 7mm
- Spring base diameter: 9mm
- Spring thickness: 1mm
- Spring height (free height): 12mm
- Plating: Electroplated zinc
Total number of coils: 6
The small springs will be ordered afterwards if the big springs are excellent.
I just want to make sure if everybody is okay with this, and is okay with the amount of springs they ordered
_
I am going with a 7mm top diameter because I have calculated that the yield strength is stronger with a 7mm top diameter rather than a 6mm top diameter because of the small bottom diameter of the spring, so there is a lower chance of plastic deformation occurring wider diameter.
If we are lucky, we should have have in 2-3 weeks, 4 if we are unlucky.
Edit: Another thing.
Would you mind if I make the spring 1-1.5mm taller? Just for all types of cells to be accounted for, and small plastic deformation with aging just in case.
I do think these springs have a lot of potential though.
With sufficient traction, maybe, just maybe, we can get them in other lights, like the BLF Q8 V1.5 I posted a thread about, a new special light from someone you really like, etc.
I have had issues with springs not being tall enough but rarely had a problem with it being too tall.
So an extra 1mm height sounds good to me.
I wounder if dropping the top size to 6mm might be a good idea as well, that way you could flip it upside down for drivers that have very small spring pads (like the TA 17mm).