FE Power Forums

FE Power Forums => FE Technical Forum => Topic started by: preaction on August 25, 2017, 08:25:28 PM

Title: BBM block dimensions
Post by: preaction on August 25, 2017, 08:25:28 PM

Should there be any clearance between the first main cap  and the sides of the register in which its installed and tightened down not torqued down and without a crank or bearings ?

Title: Re: BBM block dimensions
Post by: blykins on August 26, 2017, 05:38:31 AM

No, it's an interference fit.  It will be tight against the registers and will be tight on the dowels.   You will need a slide hammer to pull the caps before and during mock-up.

Title: Re: BBM block dimensions
Post by: preaction on August 26, 2017, 12:15:00 PM

Thanks Brent my first and last main caps can fit a .020 feeler on both sides. I will post  some pics.

Title: Re: BBM block dimensions
Post by: blykins on August 26, 2017, 12:24:59 PM

I should have read better.

1st and 5th caps will have clearance.  The middle 3 will be pretty stinkin tight.

I have one on the stand right now and my 1st and 5th caps have .020" clearance between cap and block too.

Title: Re: BBM block dimensions
Post by: preaction on August 26, 2017, 12:25:57 PM

The first two are the front cap last two are the back cap. What are my options?

Title: Re: BBM block dimensions
Post by: preaction on August 26, 2017, 12:27:16 PM

Good as that's what I have too, I thought all were close fit.

Title: Re: BBM block dimensions
Post by: preaction on August 26, 2017, 07:07:59 PM

Does anyone know of a reason for the clearance on these caps (1&5) and not a tight fit for the front and back  ?

Title: Re: BBM block dimensions
Post by: blykins on August 26, 2017, 07:10:55 PM

Doesn't need to be.

The middle 3 take the brunt of the stress and they are cross-bolted, so they have to be very tight against the registers for when you torque the cross bolts.

First and fifth caps are doweled and studded, they are not going anywhere.