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31
UTV Member Project Logs / Re: AR-51 build
« Last post by Carlriddle on January 08, 2019, 02:55:30 AM »
Mine is g&g 21 fully splined. Or it was before I sold the that spool. I bought from Jody at protodie he had it heat treated. Seems like about $50?  It looked new when I pulled out of car.  Car was 1125 but was back when was a 3 seater. I shaved some weight when I carved it but prob still close after turbo stuff. Rpm box about same weight as spool.
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UTV Member Project Logs / Re: AR-51 build
« Last post by fabr on January 07, 2019, 06:25:57 PM »
No sir, no lip.  I do check them before every trip though. 

That shaft is a G&G 21 spline shaft.  Model# 112A2221.  There is no spec on material type.  I may have to contact G&G to get that info so see if I can even heat treat it.

Justin
Yup.That's the first thing.
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Meet and Greet / Welcome to our newest member Danaity
« Last post by Yummi on January 07, 2019, 11:02:30 AM »
Hi Danaity,

Tell us a bit about yourself?

Any cool projects on tap?  Prior experience?  

Do you have the winning lotto numbers?
34
UTV Member Project Logs / Re: AR-51 build
« Last post by deranged on January 07, 2019, 10:13:38 AM »
No sir, no lip.  I do check them before every trip though. 

That shaft is a G&G 21 spline shaft.  Model# 112A2221.  There is no spec on material type.  I may have to contact G&G to get that info so see if I can even heat treat it.

Justin
35
UTV Member Project Logs / Re: AR-51 build
« Last post by dsrace on January 07, 2019, 07:47:08 AM »
deranged, is there no lip on that drive flange to capture the cv if the bolts were to loosen up?
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UTV Member Project Logs / Re: AR-51 build
« Last post by dsrace on January 07, 2019, 07:46:24 AM »
I used a similar rear spool design with the G&G spline shaft.  I twisted the first shaft and had to upgrade to a heat treated one.  Running a zx12.  Id check to see if HT was done, Rick doesnt say on his site.  Small price for the added durability. 

Upgrade looks great, looking like 10-12" added to length??


i remember when you twisted that shaft. not a little twist and i remember looking at that shaft and noticing it was the same shape and spline of an ag shaft i have seen many times on several pto's!  you were n/a then and i bet you rail weighs 1000 to 1100lbs.
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UTV Member Project Logs / Re: AR-51 build
« Last post by fabr on January 07, 2019, 07:28:57 AM »
Not all steel is heat treatable. Do you know what it is made from?  Not all steels HT the same way either. The 8620 I referred to will not through harden leaving a hardened surface and a ductile core. The 4340 is through hardenable. Either will work well (and some others)but the composition needs known for the treater to be able to properly HT the item.
38
UTV Member Project Logs / Re: AR-51 build
« Last post by deranged on January 07, 2019, 07:14:46 AM »
Cryo does not replace heat treating. It is an additional step . In your case (and 99% of all cases) HT is all that is needed. Best shaft material would be 8620 but 4340 is just fine also.
Good point.

Could I heat treat the existing spool I already have?  It seems it's still good.

Justin
39
UTV Member Project Logs / Re: AR-51 build
« Last post by fabr on January 07, 2019, 06:00:59 AM »
Cryo does not replace heat treating. It is an additional step . In your case (and 99% of all cases) HT is all that is needed. Best shaft material would be 8620 but 4340 is just fine also.
40
UTV Member Project Logs / Re: AR-51 build
« Last post by deranged on January 07, 2019, 05:39:05 AM »
I used a similar rear spool design with the G&G spline shaft.  I twisted the first shaft and had to upgrade to a heat treated one.  Running a zx12.  Id check to see if HT was done, Rick doesnt say on his site.  Small price for the added durability. 

Upgrade looks great, looking like 10-12" added to length??
The wheelbase is 12" longer.  Good eye.  It will also be 6" overall wider too.
I will look into what Rick uses for shaft material.  Would it be better to cryo treat it vs heat treat?  I may have to look into that.
What does your car weigh?  I think I will be near 1200# with me in it after i'm done.

Justin
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