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Old 11-15-2017, 01:36 AM
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Default Reconing sub with mega roll surround

I have crossfire XTF15 motor that im going to recone with pSI parts.
I ordered the mega roll surround cone with a TI basket to utilize the suspension capabilities that basket offers with 10" spiders.
But im concerened about the coil leaving the gap. The pole piece on this motor only sits about 1/2" above the top plate. I noticed that Sundown motors have giant pole pieces to compensate for more travel? Will i need to add a pole cap to extend the pole so the coil dont jump out the gap?.... thanks
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Old 11-16-2017, 12:01 PM
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Originally Posted by D810boy View Post
I have crossfire XTF15 motor that im going to recone with pSI parts.
I ordered the mega roll surround cone with a TI basket to utilize the suspension capabilities that basket offers with 10" spiders.
But im concerened about the coil leaving the gap. The pole piece on this motor only sits about 1/2" above the top plate. I noticed that Sundown motors have giant pole pieces to compensate for more travel? Will i need to add a pole cap to extend the pole so the coil dont jump out the gap?.... thanks
Not sure about the specs on the motor. Is is a 3" or a 4" voice coil?

For the most part, you will not jump the gap. If the coil isn't long enough, that may happen, but that's because of the inappropriate wind height.

Sundown has a longer pole piece to keep inductance down and keep things more linear.

I've built several subs that have a relatively short pole piece with the same parts. Cascade ultras, DC XL ect... never a problem. Not saying they are ideal for the parts used... but never presented an issue.
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Old 11-16-2017, 12:53 PM
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Thanks for the reply.
Its a 3" coil. Ill just build it and see how it goes. My concern was mainly that this motor may not be suited well for this type of suspension setup..Either bottoming out or jumping the gap..

thanks
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Old 11-16-2017, 01:51 PM
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Thanks for the reply.
Its a 3" coil. Ill just build it and see how it goes. My concern was mainly that this motor may not be suited well for this type of suspension setup..Either bottoming out or jumping the gap..

thanks
Again, I'm not sure about the motor or its specs.

I will say this with certainly though, you will have issues with the mega role cone on a TI basket. The cone depth is deeper than the spider landing.

I have a solution that I have shared with others. Unfortunately I'm out of the country and don't have access to my pictures. Maybe Sonic or a few others can help as they have seen what I have done. You will ultimately need one of sundown coil supports and invert it and glue the heck out of it on the coil to top cone. Otherwise the entire setup won't work.

Imho, you're better off buying a sundown basket while you're at it. The spider difference is minimal, and from what I see you're main goal is, you will not be disappointed both preformance/looks.
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Old 11-16-2017, 03:02 PM
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Im sure Dave at PSI would have thought of that. He was the one recommended the Ti basket for the mega roll cone. Will a spider spacer work?
I didnt even recieve the recone yet, i get it on saturday so not sure if it has a spacer
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Old 11-16-2017, 03:55 PM
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Dave does it for a living. He knows 10000x more than I do about building subs. If he recommended it, I'd take his word. That is if he built it. Not just sold you parts. For all ge knows you have two different builds going on.
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