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Old 02-12-2019, 08:25 AM
  #316  
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Originally Posted by JC3 View Post
I don't have a 7.2 (yet) but I do have two 7.1's. Last week I was working with a guy that had just bought a new 7.2. He was struggling with getting a larger pinion on his motor. The size of the pinion is limited by the top deck! Fortunately for him, I had a RSD VTD for sale and that solved his problem. Does AE have any plans to address this limitation posed by the new motor/top deck arrangement? I'd hate to think that the VTD is the only option.
Just out of curiosity, what size spur was he using and do you think if he put a bigger spur on he could use a smaller pinion to get the desired ratio?
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Old 02-12-2019, 08:37 AM
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I know some people have shimmed the top deck up slightly to help with pinion clearance. Otherwise you'll have to go the smaller spur/pinion route.
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Old 02-12-2019, 09:27 AM
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He was using a very small spur, less than 90. He was adamant about using it otherwise, yes, he could have just gone bigger to get his ratio.

He was already using 1mm shims under the top deck but that still wasn't enough.
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Old 02-12-2019, 09:29 AM
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I run a smaller spur. I run a 48 pitch 69 tooth spur. It will allow me to easily get ratios down to 3.1 without the pinion hitting the top deck.
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Old 02-12-2019, 10:52 AM
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Originally Posted by glennhl View Post
I run a smaller spur. I run a 48 pitch 69 tooth spur. It will allow me to easily get ratios down to 3.1 without the pinion hitting the top deck.
You mentioned earlier that you were using 48p gears. So, you can do a 44t pinion max. No clearance problems there.
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Old 02-12-2019, 11:12 AM
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Originally Posted by JC3 View Post
You mentioned earlier that you were using 48p gears. So, you can do a 44t pinion max. No clearance problems there.
Well, I'm glad you made me go check, I was COMPLETELY WRONG! Right now I'm running a 69 tooth spur and a 39 tooth pinion and it works great. That gives a 3.54 FDR. That's what I run for my VTA 25.5 car. But a 40 tooth pinion won't fit, it will barely hit the top deck. So if I need to run below 3.5, then I need to put on the 66 tooth spur gear. I'm not positive, but pretty sure I could move the motor back enough to get the 39 tooth pinion to mesh properly. That would give 3.38 FDR. Not sure if it's in the cards to get below that unless you run even a smaller spur and then slot the motor mount holes so you can move the motor back more.
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Old 02-12-2019, 12:12 PM
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Originally Posted by glennhl View Post
Well, I'm glad you made me go check, I was COMPLETELY WRONG! Right now I'm running a 69 tooth spur and a 39 tooth pinion and it works great. That gives a 3.54 FDR. That's what I run for my VTA 25.5 car. But a 40 tooth pinion won't fit, it will barely hit the top deck. So if I need to run below 3.5, then I need to put on the 66 tooth spur gear. I'm not positive, but pretty sure I could move the motor back enough to get the 39 tooth pinion to mesh properly. That would give 3.38 FDR. Not sure if it's in the cards to get below that unless you run even a smaller spur and then slot the motor mount holes so you can move the motor back more.
Thanks for looking. I checked with the young man I helped. He was running a 88/56 with 64p gears. I think the largest pinion that he could fit with kit deck was around a 50. If he doesn't want to run the VTD anymore he will have to live with a larger spur. Thanks for helping me to clarify this!

Last edited by JC3; 02-12-2019 at 01:04 PM. Reason: Removed stay with 48p gears.
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Old 02-12-2019, 03:05 PM
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VTD?
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Old 02-12-2019, 03:08 PM
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page 27

https://www.teamassociated.com/pdf/c...C7.2-30122.pdf
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Old 02-12-2019, 03:11 PM
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Originally Posted by DARKSIDE View Post
VTD?
RSD's VTD (vertical top deck.) Previously for the 7.1 now a 7.2 item.


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Old 02-12-2019, 03:13 PM
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oh...
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Old 02-12-2019, 03:17 PM
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How come you didn't come to QCRC for round two of the Tri-State series?
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Old 02-12-2019, 03:20 PM
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real life
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Old 02-15-2019, 05:58 AM
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Do the AE x-ring shock seals (Part #91493) need to be soaked or treated in any way prior to use? I'm reading that some of the x-ring seals do and some don't. AE doesn't say one way or the other.
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Old 02-15-2019, 05:30 PM
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Originally Posted by JC3 View Post
Do the AE x-ring shock seals (Part #91493) need to be soaked or treated in any way prior to use? I'm reading that some of the x-ring seals do and some don't. AE doesn't say one way or the other.
I use the green slime on any o-ring including the x-rings. It's a habit I got from work in Aerospace manufacturing.
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