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Old 10-20-2015, 11:33 PM   #1
wrench69
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Default 9" Aluminum spool?

Has anyone done the swap to an aluminum spool and was able to measure the results in ET?
What is the life span/durability of one?
Maybe better durability wise to stick with a lightweight steel spool?
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Old 10-31-2015, 08:52 AM   #2
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Default Re: 9" Aluminum spool?

We switched to the Aluminum spool from MW, two years ago. And 100 plus runs behind 1400hp @ 3300lbs. I would highly recommend it. We picker up ET...
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Old 11-03-2015, 12:24 AM   #3
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Default Re: 9" Aluminum spool?

Here is mine. 35 spline 1000 hp at 1650 pounds. REM polished 7.33 Motive gear. MicroBlue bearings.






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Old 11-03-2015, 12:24 AM   #4
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Default Re: 9" Aluminum spool?

Here is mine. 35 spline 1000 hp at 1650 pounds. REM polished 7.33 Motive gear. MicroBlue bearings

Last edited by Mark_MWE; 06-19-2016 at 04:27 PM. Reason: Photo too large
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Old 12-25-2015, 02:48 AM   #5
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Default Re: 9" Aluminum spool?

I switched to polished gears, coated bearings and the aluminum spool. All those together we picked up almost .03. From 3.121 to 3.092 and 1 full mph. 103.3 to 104.4 repeatedly. Very happy with the whole thing. Single 4 all motor sbc qualifying in the middle of a class dominated by 500" blown alcohol cars. One more tenth and we will be winning the big money. Please pass the prune juice.
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Old 12-25-2015, 09:16 AM   #6
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Default Re: 9" Aluminum spool?

Gotta be low on the gain/dollar ranking.
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Old 12-25-2015, 09:21 AM   #7
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Default Re: 9" Aluminum spool?

Do you set up the gears any different than when using a steel spool?
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Old 12-25-2015, 06:56 PM   #8
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Default Re: 9" Aluminum spool?

The same. The pattern dictates the lash. You can see I like it just inside of center. Any deflection at all will push the pattern to dead center on the tooth. I'm thinking this one ended up at .0104" lash average taken in 10 locations.
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Old 12-27-2015, 11:09 PM   #9
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Default Re: 9" Aluminum spool?

Quote:
Originally Posted by rskrause View Post
Gotta be low on the gain/dollar ranking.
I was thinking this ...had to ask though.
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Old 12-30-2015, 05:07 PM   #10
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Default Re: 9" Aluminum spool?

i broke a strange spool in 6 passes in my 9"
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Old 12-31-2015, 03:11 AM   #11
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Default Re: 9" Aluminum spool?

Aluminum?
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Old 12-31-2015, 12:31 PM   #12
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Default Re: 9" Aluminum spool?

Quote:
Originally Posted by wrench69 View Post
Aluminum?
yep.... i wonder if the MW one is much tougher.
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Old 01-09-2016, 03:33 PM   #13
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Default Re: 9" Aluminum spool?

Quote:
Originally Posted by ty_ty13 View Post
i broke a strange spool in 6 passes in my 9"
I'm guessing there was some pretty significant housing alignment issues. Did it break anywhere near the splines?
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Old 01-18-2016, 01:13 PM   #14
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Default Re: 9" Aluminum spool?

it just chunked it out. granted we were 2900lbs. 1800-2000hp 1.12 60's
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Old 01-18-2016, 02:40 PM   #15
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Default Re: 9" Aluminum spool?

We have run the 7075 aluminum spool in a 3300lbs & 1400hp...
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