Trailing arm stud jig?

[AlanT]

Here is a video on doing exactly this:

 

There are five of these videos covering various methods.

[harrytr5]

Hi Niall,

I wish we could finally decide what is best to use and where these Parts can be got,a Link or 2 might be useful.

So we need,

1 Jig ??? Harry has one but he may need to do his T/A again (just for fun)

2 Drill Bit,what Size. This comes with the helicoil set

3 Tap,what Size. This comes with the helicoil set

4 Inserts ??? so many Choices. These come with the set

 

5/16" UNC is the general upgrade.

 

Roger

Hi Roger,

You are welcome to use my Jig,copy it,use it but return it in the condition you found it. I fitted UNF studs as the helicoil is a coarse outer thread anyway.Maybe I should fit unc.

Regards Harry

[TR NIALL]

Helicoil Set arrived yesterday 5/16 UNC,all I need now is 12 Studs and an Irish Jig,River Dance maybe.

Edited July 26, 2014 by TR NIALL

[Motorsport Mickey]

AAAAaaaaaahhhhh Tubal Cain, he's got lots of videos on Youtube which I enjoy watching, slightly different method to the one I described but broadly the same. Love his accent, to my Brit ears it's like being talked to by Jimmy Stewart.

 

Mick Richards

[BlueTR3A-5EKT]

Orig stud was 5/16 UNF both ends - which is 1.5" long (TD812)

 

Here is possible site in UK for UNC/UNF in 5/16" - if it is tool long a saw might be the best option.

 

http://www.gwr-fasteners.co.uk/stud-516-uncunf-x-114---austinrovermg---10-pack-7484-p.asp

or

http://www.namrick.co.uk/acatalog/Home_Manifold_Studs_42.html

 

Cheers

Peter W

Edited July 26, 2014 by BlueTR3A-5EKT

[Motorsport Mickey]

I should be doubtful of using the studs shown on the Namrick site.

 

 

If they are as shown the UNC end is too short, there is parent metal available in the casting to go deeper than the original drillings and gain maybe another 3 or 4 threads. It looks like from the photo using these short UNC thread forms they wouldn't utilise even the existing drillings for depth, I'd phone them and query before buying them.

 

Mick Richards

[TR NIALL]

Now getting even more confusing,how Deep can one go into the Trailing Arm before it gets To Late???

[Motorsport Mickey]

Niall,

 

Because the trailing arm studs are placed into forged "blocks" (in the main") if you break through at the bottom it doesn't matter. The stud doesn't gain any strength from the bottom only the shank and so it wouldn't bother me to break through there.

 

Mick Richards

[TR NIALL]

Thanks Mick,I'm sure there will be more Questions.

[AlanT]

Hey Mickey, what grade of steel do we need for these?

 

I am thinking EN8 aka 1040.

Edited July 27, 2014 by AlanT

[Motorsport Mickey]

Are we talking studs or the jig ?

 

Mick Richards

[AlanT]

Sorry I'm sleepy and didn't explain properly.

 

I'm thinking about making studs UNC-UNF with the length of threads that really suits the job.

 

As it happens I have a Herbert die-head to do this and I'd only need one set of chasers.

[Motorsport Mickey]

Hi Alan,

 

I think the EN8 being a quality steel with good machining properties should do the job fine. Because there are 6 fixings around the hub they only need the feeble 16 lb ft torque requirement to do the job, so the EN8 material will easily give that.

 

Mick Richards

[AlanT]

Mickey, would you be able to measure up and tell me the optimum dimensions?

[Motorsport Mickey]

Hi Alan,

 

You have a PM.

 

Mick Richards