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Re: My build of a Tuba HT sub

Posted: Mon Feb 14, 2011 6:36 pm
by wormraper
quick question.... I went into Ace and Loewes today looking for 3/16 bolts and they looked at me like I was crazy.... they said that had only 1/4 bolts or 5/32 bolts.... would 1/4 or 10/32 (5/16) work or is it specifically only 3/16 bolts

Re: My build of a Tuba HT sub

Posted: Mon Feb 14, 2011 7:15 pm
by Bill Fitzmaurice
wormraper wrote:quick question.... I went into Ace and Loewes today looking for 3/16 bolts and they looked at me like I was crazy.... they said that had only 1/4 bolts or 5/32 bolts.... would 1/4 or 10/32 (5/16) work or is it specifically only 3/16 bolts
www.speakerhardware.com

And whoever you dealt with are idiots. 3/16" is one of the most common sizes, far more so than 5/32". And 3/16" and 10/32 are the same thing. :noob:

Re: My build of a Tuba HT sub

Posted: Mon Feb 14, 2011 7:22 pm
by wormraper
Bill Fitzmaurice wrote:
wormraper wrote:quick question.... I went into Ace and Loewes today looking for 3/16 bolts and they looked at me like I was crazy.... they said that had only 1/4 bolts or 5/32 bolts.... would 1/4 or 10/32 (5/16) work or is it specifically only 3/16 bolts
http://www.speakerhardware.com

And whoever you dealt with are idiots. 3/16" is one of the most common sizes, far more so than 5/32". And 3/16" and 10/32 are the same thing. :noob:
lol, he must have been even more an idiot than me... lol (they had a little chart will all the sizes and 3/16 wasn't on there so he said he'd never heard of them).... so 10/32 is the same thing??? then that's easy... they had a whole tray of those (although I would have thought it was the same as 5/16 but maybe my math was wrong... anywhoooooooooo. I guess I'll be going back and hopefully getting someone smarter....

also are T-nuts still recommended?? I'm getting a ton of differing recommendations from AVSforum members who've built theirs all saying don't touch them with a 10 foot pole... they slip etc.... either recomending speaker "brackets" or using these with a chunk of ply underneath the drill hole as a bracing
http://www.lowes.com/pd_169762-2191-253 ... t%3Danchor

Re: My build of a Tuba HT sub

Posted: Mon Feb 14, 2011 8:11 pm
by Greg Plouvier
1-1/2" deep thread wood screws - Recex/Robertson like these:

http://www.fastenal.com/web/products/de ... 966&ucst=t

http://www.fastenal.com/web/products/de ... 182&ucst=t

Some people don't recommend them on heavier drivers but I guarantee you they will never come out - particularly in baltic. I've been running 18" reflex subs for years loaded with Seleniums that weigh about 30 lbs held in by deep thread screws and never a problem

Re: My build of a Tuba HT sub

Posted: Mon Feb 14, 2011 10:15 pm
by Bill Fitzmaurice
Greg Plouvier wrote:1-1/2" deep thread wood screws - Recex/Robertson like these:

http://www.fastenal.com/web/products/de ... 966&ucst=t

http://www.fastenal.com/web/products/de ... 182&ucst=t

Some people don't recommend them on heavier drivers but I guarantee you they will never come out - particularly in baltic. I've been running 18" reflex subs for years loaded with Seleniums that weigh about 30 lbs held in by deep thread screws and never a problem
I don't recommend the combination of heavy drivers and 1/2" baffles, and that's what THT is. TNuts are a pain, but they work. You just have to remember not to force them, if you do they will spin out.

Re: My build of a Tuba HT sub

Posted: Mon Feb 14, 2011 10:57 pm
by Greg Plouvier
Oh yeah - forgot the THT is just the baffle without the extra 1/2" of spacer.

Re: My build of a Tuba HT sub

Posted: Mon Feb 14, 2011 11:14 pm
by loudsubz
when your talking about the t nuts spinning out do they actually come loose from the plywood and not grab anymore? I have only had issues with T nuts in mdf as they didn't grab properly and popped out if you put pressure on them, but once you spun them and they caught the wood again they grabbed well.

When I put my T nuts in I hammer them flush on the wood and they were not coming out unless I put a bolt in the other side and hit it with a mallet to pop it out.

Re: My build of a Tuba HT sub

Posted: Tue Feb 15, 2011 4:04 am
by Dave Non-Zero
And 3/16" and 10/32 are the same thing.
umm...... :confused:

Re: My build of a Tuba HT sub

Posted: Tue Feb 15, 2011 8:03 am
by Bill Fitzmaurice
loudsubz wrote:when your talking about the t nuts spinning out do they actually come loose from the plywood and not grab anymore?.
They spin out when the bolt is inserted off-axis and jams, at which point most people use a wrench to try and force it. When they do it gets cross-threaded and you can neither drive it in or out. A wrench should only be used when the bolt has first been hand threaded almost all the way in.

Re: My build of a Tuba HT sub

Posted: Tue Feb 15, 2011 8:31 am
by loudsubz
Bill Fitzmaurice wrote:
loudsubz wrote:when your talking about the t nuts spinning out do they actually come loose from the plywood and not grab anymore?.
They spin out when the bolt is inserted off-axis and jams, at which point most people use a wrench to try and force it. When they do it gets cross-threaded and you can neither drive it in or out. A wrench should only be used when the bolt has first been hand threaded almost all the way in.
A little wiggle of the driver usually allows the bolts to get seated properly and go in. Like you mention a ratchet should not be used untill the bolts are all the way into the T nut.

Re: My build of a Tuba HT sub

Posted: Tue Feb 15, 2011 9:03 am
by Bill Fitzmaurice
Dave Non-Zero wrote:
And 3/16" and 10/32 are the same thing.
umm...... :confused:
Over here we still use good King Edward II standards and not those of that Johnny-Come-Lately, Napoleon.

Re: My build of a Tuba HT sub

Posted: Tue Feb 15, 2011 9:11 am
by LelandCrooks
#10 bolt is 3/16 in diameter. The second number is threads per inch. 10-24, 10-32.

Re: My build of a Tuba HT sub

Posted: Tue Feb 15, 2011 10:25 am
by Dave Non-Zero
Aaaaaah I get it. Another way for imperial to confuse. :) I'll put it on my list....

Re: My build of a Tuba HT sub

Posted: Tue Feb 15, 2011 12:28 pm
by Harley
There're three tricks to successful tee-nutting

1) Buy the more expensive but larger tee nuts with 4 claws,

2) Epoxy the back of them, and

3) Run a thread tap through them prior to trial fitting the driver and putting bolts in them.

Re: My build of a Tuba HT sub

Posted: Tue Feb 15, 2011 2:55 pm
by wormraper
Harley wrote:There're three tricks to successful tee-nutting

1) Buy the more expensive but larger tee nuts with 4 claws,

2) Epoxy the back of them, and

3) Run a thread tap through them prior to trial fitting the driver and putting bolts in them.
1.... will do

2... plan on doing that

3.... ummmm. sorry to sound stupid what what does "run a thread tap through them" mean :oops: