Superior turtleback lugs

[Typ3nut]

[TKT.CITY_vw]

looking for 1 original turtle back wheel bolt

I have my set of 4 wheels that have been in storage for to long, so i think it is time to buy an original set but there isn´t any one on the market .

I have the machines & equipment to reproduce the bolt, If someone could load me 1 bolt or send me the precise measurements (with a vernier caliper please).

i will appreciate.

thanks for reading.

[andk5591]

I have the solution and just installed them

Summit racing 21133etxl lugs
GOR-79915 adapter washers
12m 1.5 to 14M 1.5 adapter studs
Ground the lugs about 1/8" so they didnt bottom out.

The key to this is the diameter of the shank (.062") and having a flat surface to mate to the wheel....
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D-Dubya Manx clone - 63 Short pan,1914.
Rosie 65 bug - My mostly stock daily driver.
Woodie 69 VW woodie (Hot VWs 7/12).
"John's car" 64 VW woodie - The first ever
Maxine 61 Cal-look bug - Cindy's daily driver.
Max - 73 standard Beetle hearse project - For sale
66 bug project - Real patina & Suby conversion
There's more, but not keeping them...

[talljordan]

[andk5591]

Did you not see my post just above? It works. Yeah - the set up time for machining anything like what you are proposing is where the cost is. You can try shopping around to another machine shop that may do a smaller batch. You are looking for a smaller specialty shop instead of a job shop. Like, I have a local guy that has a full CNC set up in his home shop that will make me some things, but it would still be expensive.
_________________
D-Dubya Manx clone - 63 Short pan,1914.
Rosie 65 bug - My mostly stock daily driver.
Woodie 69 VW woodie (Hot VWs 7/12).
"John's car" 64 VW woodie - The first ever
Maxine 61 Cal-look bug - Cindy's daily driver.
Max - 73 standard Beetle hearse project - For sale
66 bug project - Real patina & Suby conversion
There's more, but not keeping them...

[talljordan]

I saw your post. Those washers are too large diameter and the nuts no longer exist. I found some alternatives on summit racing that I just placed an order for.

https://www.summitracing.com/parts/gor-41137et
https://www.summitracing.com/parts/gor-79916

However I still have a strong preference for originality, and I would like to get these manufactured if I can
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1972 Super Beetle, Parked until adequate restoration funding is acquired in restoration!

Wanted: Male computer diagnostic plug end

[andk5591]

Fortunately I don't have any more turtle backs coming in for work. Let me know how what you got works for you. Thanks. And yeah, IF you are able to get new ones made, that would be of interest. There are folks that love those and you may have a small market if you can get a few dozen sets made.
_________________
D-Dubya Manx clone - 63 Short pan,1914.
Rosie 65 bug - My mostly stock daily driver.
Woodie 69 VW woodie (Hot VWs 7/12).
"John's car" 64 VW woodie - The first ever
Maxine 61 Cal-look bug - Cindy's daily driver.
Max - 73 standard Beetle hearse project - For sale
66 bug project - Real patina & Suby conversion
There's more, but not keeping them...

[talljordan]

They just came in, some issues:

The shank diameter is 0.620 instead of 0.625. This may cause centering issues.

Also the shank protruding past the washer is 0.18 or so, and I think its supposed to be closer to 0.25-0.3.

I may still give these a shot but dont have high hopes.
_________________
1972 Super Beetle, Parked until adequate restoration funding is acquired in restoration!

Wanted: Male computer diagnostic plug end

[TKT.CITY_vw]

[talljordan]

Francisco and I have been working on getting these made as original. I received the sample and have tested it as adequate and a perfect reproduction.

In the photos, the rusty one is stock, and next to it is our repro, and the aftermarket nut option.

This bolt is an exact replica of the stock bolts, and the washer included is slightly thicker to prevent pitting or bending like I saw with my stock bolts.

You can see at a glance how much superior these are to the aftermarket option. Not only is the shank the correct length so theyll center better and be firmer. The diameter is correct, so they fit snug in the wheels. You can see that the aftermarket has barely any shank protruding, and because they use lug studs, there is risk of them not gripping great.

I think we will be having a bunch of these made, and then will offer them for sale, with pricing TBD.

If you have interest, please reach out so I know how many to have made.

_________________
1972 Super Beetle, Parked until adequate restoration funding is acquired in restoration!

Wanted: Male computer diagnostic plug end

[Scott H]

I would be interested in a set, pending final pricing.

What material are they being made from?
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Scott

[TKT.CITY_vw]

@talljordan and I have discussed the price still working on it the material is M8 treated, strong as the specification.

This bolts are management by a mechanic engineer an test fitment in different formula vee wheels, in Jordan's wheels and my wheels.

Prices will be sell by bolt and for a 16 set, also can work on a locking bolt.
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Franscico Rocha

when the sciens ends, the art begin!

[talljordan]

I double checked with the manufacturer by email.

The material is 4140 steel and is NOT heat treated after all. Heat treating adds so much cost that the cost for a set would exceed the value of a set of wheels.

4140 steel is rated at about 95000 PSI tensile strength which is roughly in line with grade 5 steel, and about 2/3 the strength of grade 8

That being said, I have tested the sample bolt to 125 ft-lbs with no damage. I wouldn't recommend rattle gunning the ever living shit out of them, but they should be more than adequate for our purposes. I would suggest only mounting using a torque wrench set to the correct torque setting for a VW. I didn't want to torque any harder for fear of damaging the rim itself. But my math is showing a theoretical maximum torque of over 600 ft-lbs before the threads fail, assuming a perfect bolt.
_________________
1972 Super Beetle, Parked until adequate restoration funding is acquired in restoration!

Wanted: Male computer diagnostic plug end