Be a bit careful in your analysis. Bolts usually have a rolled and or forged
thread (well, hot or cold rolled). Cut threads are measurably weaker than a
rolled thread. Some machine shops CAN roll a thread, but not all, and they will
cut the thread. Generally this is fine, but if it is near the limits (not a
good idea anyway, safety factors are a good thing) it can be an issue
--
73 de KG2V
Charlie
> On Oct 15, 2014, at 8:37 PM, Marvin Shelton <marvshelton@me.com> wrote:
>
> good idea, but I wonder if I can find a 24" long 2" diameter grade 55 bolt
> and have the top six inches machined?
>
>
> Marv - WA2BFW
>
> Sent from my iPad on the iCloud
> And YES it's cool!
>
>> On Oct 15, 2014, at 5:03 AM, TexasRF--- via TowerTalk
>> <towertalk@contesting.com> wrote:
>>
>> How about larger anchor bolts with upper six inches or so machined to fit
>> the base holes?
>>
>> Could the base holes be reamed to a larger size?
>>
>> K5GW
>>
>>
>>
>>
>> In a message dated 10/15/2014 12:09:54 A.M. Central Daylight Time,
>> marvs@att.net writes:
>>
>> the base is designed for 1-1/8 bolts.
>>
>> Sent from my iPad
>> And YES it's cool!
>>
>>> On Oct 14, 2014, at 9:36 PM, <ve4xt@mymts.net> <ve4xt@mymts.net> wrote:
>>>
>>> Use larger bolts?
>>>
>>> Just sayin'
>>>
>>> 73, Kelly
>>> Ve4xt
>>>
>>> Sent from my iPad
>>>
>>>> On Oct 14, 2014, at 11:00 PM, "Marv Shelton" <marvs@att.net> wrote:
>>>>
>>>> I asked a PE at work and since the holes are so much bigger than the
>> bolt. ( the holes are 2.5" diameter, the bolts only 1.125") he said the
>> rated
>> strength of the epoxy is only good if the hole is no more than a half inch
>> bigger in diameter than the bolt. I confirmed this by talking to one of
>> the epoxy product manufacturers.
>>>>
>>>> Sent from my iPad
>>>> And YES it's cool!
>>>>
>>>>>> On Oct 14, 2014, at 8:23 AM, K7LXC@aol.com wrote:
>>>>>>
>>>>>> Anchor bolt update:
>>>>> Thanks for all the input everyone. It looks like epoxy, or at least
>> commercial grade stuff dispensed with a caulking gun is out as a potential
>> solution. It seems like the holes I made are too big.
>>>>> So now I am looking at anchoring cement and trying to talk to
>> industrial contractors to see if there is another alternative.
>>>>>
>>>>> So how did you determine that your new holes won't work for
>> putting in your anchor bolts? The epoxy is stronger than the concrete so it
>> seems to me that's it's a non-issue. Are you over-thinking this?
>>>>>
>>>>> Cheers,
>>>>> Steve K7LXC
>>>>> TOWER TECH -
>>>>> Professional tower services for amateurs
>>>>> Cell: 206-890-4188
>>>> _______________________________________________
>>>>
>>>>
>>>>
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>>
>>
>>
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