Secondary Helix Bolts?

[Chewy22]

I tried changing out the helix. Stripped the first two allen head bolts I tried. Ton of heat and smacked the heads and no luck. Will try hammering a torx bit into them or may have to drill the heads off.

Is there a better bolt to use? I had better luck with the torx head bolts that were on the 19 secondaries. Looking for a better replacement option. The allen head ones suck!!

 

[boondocker97]

If it looks like the same secondary design as the Ascender the ZRP Torx Plus bolts will probably work. https://zollingerracingproducts.com/artic-cat/better-helix-bolts-set-of-4/

This is what I did the last time I stripped some helix bolts instead of drilling: https://www.snowest.com/forum/threads/not-how-i-wanted-to-start-pre-season-maintenance.462659/

 

[Chewy22]

Perfect - thank you!!!

 

[Woody67]

BDX sells better ones torx head in sets of 4 the stock ones will strip the head just trying to torque them correctly.

 

[562xp]

When I changed the helix out I drilled the heads off then used an easy out to get the rest of the bolts out. Make sure you center up well when you drill the heads off as it will make it easier to drill for the easy out. The helix bolts are metric not standard threads.

 

[hansenmac]

probably has a decent amount of loctite on them maybe takes more heat? seems like i had trouble on a clutch too was afraid to put too much heat on it but thats what it took

 

[ratlover]

Either zrp sent me the wrong secondary helix bolts or cat changed them from the ascender bolts. Still haven’t dug into what the deal was. I bought em because I had an issue getting them out of my ascender

 

[562xp]

The Adapt secondary bolts are M6 and the Ascender bolts are 1/4".

 

[Chewy22]

The Adapt secondary bolts are M6 and the Ascender bolts are 1/4".

Good to know - thank you!!!

 

[joshkoltes]

How long are they

M5 M6 M8 Titanium Torx T25 T30 T40 Flat Head Countersunk Bolt Screw Fastener | eBay

.8mm thread pitch for M5, 1.0mm thread pitch for M6,1.25mm thread pitch for M8. T25/T30/T40 Torx head. Super strong 120ksi yield strength capability. Made from certified Titanium Grade 5 6AL-4V bar. Made in the USA.

www.ebay.com

https://www.ebay.com/itm/315960258310?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=tuqedq9usaq&sssrc=4429486&ssuid=ikBDmSqGTk6&var=&widget_ver=artemis&media=COPY

10.9 High Strength Alloy Steel Torx Countersunk Machine Screws Six Lobe DIN 965 | eBay

【Function】:Suitable for machinery and industrial fasteners.Also fit for many woodworking and DIY jobs, fasteners for the furniture and cabinet industry. - Material : Alloy Steel.

www.ebay.com

 

[562xp]

1/2" of threads on the bolts.

 

[frozenfarmer]

Could easily get some from McMaster or other supply house as well. I would recommend locktiting the bolts though. They come with a patch lock. You should heat the sheave where the threads are ahead of removing.

 

[frozenfarmer]

How long are they

M5 M6 M8 Titanium Torx T25 T30 T40 Flat Head Countersunk Bolt Screw Fastener | eBay

.8mm thread pitch for M5, 1.0mm thread pitch for M6,1.25mm thread pitch for M8. T25/T30/T40 Torx head. Super strong 120ksi yield strength capability. Made from certified Titanium Grade 5 6AL-4V bar. Made in the USA.

www.ebay.com

https://www.ebay.com/itm/315960258310?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=tuqedq9usaq&sssrc=4429486&ssuid=ikBDmSqGTk6&var=&widget_ver=artemis&media=COPY

10.9 High Strength Alloy Steel Torx Countersunk Machine Screws Six Lobe DIN 965 | eBay

【Function】:Suitable for machinery and industrial fasteners.Also fit for many woodworking and DIY jobs, fasteners for the furniture and cabinet industry. - Material : Alloy Steel.

www.ebay.com

McMaster-Carr

McMaster-Carr is the complete source for your plant with over 595,000 products. 98% of products ordered ship from stock and deliver same or next day.

www.mcmaster.com

This is based on the comment of 12mm or 12.7mm/ 1/2" long. Double check the numbers before ordering, but McMaster is pretty handy for hardware. Not always the cheapest, but sometimes they can be.