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Jimmy Nichols 06-02-2017 09:53

Thunderhex and Thunderhex Bearings
 
Has anyone else seen fitment issues with the Thunderhex and the Thunderhex bearings after you tapped the end of the shaft. Another mentor brought this to my attention. The thought is the end of the Thunderhex shaft is deforming out when tapped which causes issues in trying to install it into the Thunderhex bearing. The mentor plans to try Hex bearings, but I think he will have the same issue.

thedude019 06-02-2017 09:57

Re: Thunderhex and Thunderhex Bearings
 
Take the Thunderhex and clamp it in a drill. Then take sand paper and wrap it around the Thunderhex. Spin the Thunderhex while moving the sand paper up and down it. It will wear away the paint on the rounded edges making it easier to fit in the bearing.

Jon Stratis 06-02-2017 09:59

Re: Thunderhex and Thunderhex Bearings
 
I did notice last week that one of our shafts was a little harder to get in the bearing than I expected, and we had tapped that end of the shaft. It still fit, though, so I didn't really think much of it.

Try taking a file to the end of the shaft. Maybe there's a small burr there from cutting the shaft?

Wren Hensgen 06-02-2017 10:02

Re: Thunderhex and Thunderhex Bearings
 
This warning is in red on the thunderhex page itself

Note: Due to a manufacturing variance, our current inventory is slightly out of tolerance. The diameter of our ThunderHex Stock is oversized by (on average) 0.0003". This results in a press-fit into ThunderHex round bearings. Users who need a looser fit should gently sand the rounded corners of the hex.

Jimmy Nichols 06-02-2017 10:04

Re: Thunderhex and Thunderhex Bearings
 
I'm assuming the removed burrs, but will check tonight and will have them try sanding them down. Some of the shafts are long, so we will probably clamp in our lathe and run some emery cloth on them.

Thanks!

Jimmy Nichols 06-02-2017 10:05

Re: Thunderhex and Thunderhex Bearings
 
Quote:

Originally Posted by Wren Hensgen (Post 1641016)
This warning is in red on the thunderhex page itself

Note: Due to a manufacturing variance, our current inventory is slightly out of tolerance. The diameter of our ThunderHex Stock is oversized by (on average) 0.0003". This results in a press-fit into ThunderHex round bearings. Users who need a looser fit should gently sand the rounded corners of the hex.

Isn't that an old warning from last year? When our bearings and shaft first arrived we checked the fitment and it was smooth. So thats why we suspected the tapping operation.

gigaphoton 06-02-2017 10:13

Re: Thunderhex and Thunderhex Bearings
 
Our team has always had issues with the thunderhex being oversize enough where bearings, sprockets, ect won't slide on easily. As others have said, take some sand paper and put it in a drill to remove some of the paint. This usually lakes care of it, but sometimes you have to file down the actual sides.

Jimmy Nichols 06-02-2017 10:17

Re: Thunderhex and Thunderhex Bearings
 
Quote:

Originally Posted by gigaphoton (Post 1641021)
Our team has always had issues with the thunderhex being oversize enough where bearings, sprockets, ect won't slide on easily. As others have said, take some sand paper and put it in a drill to remove some of the paint. This usually lakes care of it, but sometimes you have to file down the actual sides.

Thank you!

BumblingBuilder 06-02-2017 10:28

Re: Thunderhex and Thunderhex Bearings
 
Because of these issues our team has stopped using thunderhex as axles, only using leftover materials as cool-looking standoffs.

Last year was thunderhex hell for our team

Jimmy Nichols 06-02-2017 10:44

Re: Thunderhex and Thunderhex Bearings
 
Quote:

Originally Posted by BumblingBuilder (Post 1641025)
Because of these issues our team has stopped using thunderhex as axles, only using leftover materials as cool-looking standoffs.

Last year was thunderhex hell for our team

Have you found another option when using hex shaft? We bought some from McMaster-Carr last year and had issues with the tolerance on it vs. the tolerance of the Hex Bearings and had an extremely difficult time installing the shafts on our climber. So we decided to go with the Thunderhex this year.

Harrison.Smith 06-02-2017 10:44

Re: Thunderhex and Thunderhex Bearings
 
Last year we almost always used thunderhex axle with regular hex bearings. This allowed for the ease of tapping but also an easier operation of getting the shaft into the bearing.

Jimmy Nichols 06-02-2017 10:46

Re: Thunderhex and Thunderhex Bearings
 
Quote:

Originally Posted by Harrison.Smith (Post 1641032)
Last year we almost always used thunderhex axle with regular hex bearings. This allowed for the ease of tapping but also an easier operation of getting the shaft into the bearing.

Thanks we plan on testing the regular hex bearings tonight to see if their is a difference.

Jon Stratis 06-02-2017 10:52

Re: Thunderhex and Thunderhex Bearings
 
Personally, I think dealing with Thunderhex being a little oversized is a lot easier than dealing with regular hex being oversized. At least with Thunderhex we can toss it on the lathe and take a couple thou off, and once you dial in the amount you need, it's pretty easy to run down an entire shaft. Heck, in the few cases where we feel a need to use solid hex (instead of Thunderhex with the hole in the middle), we turn it down to fit in thunderhex bearings. It's just easier to slide the shafts in and out of thunderhext than it is trying to get the shaft prperly aligned with the inner race of a hex bearing.

Michael Corsetto 06-02-2017 11:03

Re: Thunderhex and Thunderhex Bearings
 
We haven't noticed any fitment issues after tapping our thunderhex, but it certainly seems possible. What size tap are you running, 1/4-20?

The batch of thunderhex we bought before this preseason had no fitment issues, we love it.

-Mike

Jimmy Nichols 06-02-2017 11:04

Re: Thunderhex and Thunderhex Bearings
 
Quote:

Originally Posted by Michael Corsetto (Post 1641042)
We haven't noticed any fitment issues after tapping our thunderhex, but it certainly seems possible. What size tap are you running, 1/4-20?

The batch of thunderhex we bought before this preseason had no fitment issues, we love it.

-Mike

Yes it is 1/4-20. No issues seen before tapping, but was found after.


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