The Ford Barn

Mart · 03-23-2020, 01:01 PM

This will be part of a separate series just showing machining. In this video I show how I redrilled a total of three flywheels. I redrilled one 9" and two 11" clutch flywheels to take a 10" clutch. I used my rotary table for the first time and found that an improvised counter really paid dividends. By the end of the third one I felt I had a good process going. In a separate video I will go into more detail about the bolt pattern relationships for the Early Ford clutches. Follow along as I virtually teach myself to use the milling machine and rotary table. If you enjoy it please check my other videos and SUBSCRIBE. Mart.

https://youtu.be/JR2uxIaYodo

38bill · 03-23-2020, 07:43 PM

Looks good Mart! I just did mine a couple of months ago. It was a little easier as my new pressure plate bolt pattern was evenly spaced. I just centered the rotary table to the mill. Then I centered the flywheel to the table. Moved it over to the radius required and drilled a hole every 60 deg. Just to be safe I laid the PP on the flywheel and traced the hole locations for a visual reference so I could tell if I was off before I drilled. I even got brave and power tapped the holes. My flywheel was already drilled for three different PP's but there was plenty of room for a few more.

skidmarks · 03-23-2020, 09:20 PM

I was taught how to lay them out with a pair of dividers and dykem. Need a center pilot the same plane as the clutch surface.

Need to counter bore the hole for the shoulder on the bolt.

CA Victoria · 03-24-2020, 09:28 AM

What is the acceptable margin of error for pressure plate alignment?

19Fordy · 03-24-2020, 10:01 AM

Thank you very much, Mart, for taking the time to make such a great detailed video
so that we all could learn. It's a lot of work to make a really good video that clearly, completely and concisely explains such operations. Wish you were my next door neighbor.
You're the best. Jim

tubman · 03-24-2020, 10:40 AM

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Quote:

Originally Posted by CA Victoria

What is the acceptable margin of error for pressure plate alignment?

Probably not much these days, but in the '50's and '60's, doing it "by eye" provided acceptable results with no ill effects.

19Fordy · 03-24-2020, 10:42 AM

Yes, I was wondering about having the flywheel and assembly re balanced?

cas3 · 03-24-2020, 10:54 AM

another good show mart! i have had one of those clicker/counter things laying around for years, now i know of a use for it

Mart · 03-24-2020, 11:22 AM

Thanks for the interest fellas. I thought it would be of interest to 'barners as it has been discussed in a previous thread. (More than one, maybe). One thing I didn't dwell on was spacing the new holes away from the existing ones. Some techniques mentioned previously didn't do that and I thought it better to space the holes to avoid stress raisers in one area.

Mart.

03-23-2020, 01:01 PM	#1
Mart Senior Member Join Date: May 2010 Location: Solihull, England. Posts: 8,755	A bit of machining. Re-drilling a flywheel. This will be part of a separate series just showing machining. In this video I show how I redrilled a total of three flywheels. I redrilled one 9" and two 11" clutch flywheels to take a 10" clutch. I used my rotary table for the first time and found that an improvised counter really paid dividends. By the end of the third one I felt I had a good process going. In a separate video I will go into more detail about the bolt pattern relationships for the Early Ford clutches. Follow along as I virtually teach myself to use the milling machine and rotary table. If you enjoy it please check my other videos and SUBSCRIBE. Mart. https://youtu.be/JR2uxIaYodo

03-23-2020, 09:20 PM	#3
skidmarks Senior Member Join Date: Aug 2010 Location: newark, delaware Posts: 3,735	Re: A bit of machining. Re-drilling a flywheel. I was taught how to lay them out with a pair of dividers and dykem. Need a center pilot the same plane as the clutch surface. Need to counter bore the hole for the shoulder on the bolt.

03-24-2020, 09:28 AM	#4
CA Victoria Senior Member Join Date: Feb 2011 Posts: 2,113	Re: A bit of machining. Re-drilling a flywheel. What is the acceptable margin of error for pressure plate alignment? __________________ Tim Downtown, Ca

03-24-2020, 10:01 AM	#5
19Fordy Senior Member Join Date: May 2010 Location: Coral Springs FL Posts: 10,950	Re: A bit of machining. Re-drilling a flywheel. Thank you very much, Mart, for taking the time to make such a great detailed video so that we all could learn. It's a lot of work to make a really good video that clearly, completely and concisely explains such operations. Wish you were my next door neighbor. You're the best. Jim

03-24-2020, 10:42 AM	#7
19Fordy Senior Member Join Date: May 2010 Location: Coral Springs FL Posts: 10,950	Re: A bit of machining. Re-drilling a flywheel. Yes, I was wondering about having the flywheel and assembly re balanced?

03-24-2020, 10:54 AM	#8
cas3 Senior Member Join Date: Jan 2011 Location: sw minnesota Posts: 4,577	Re: A bit of machining. Re-drilling a flywheel. another good show mart! i have had one of those clicker/counter things laying around for years, now i know of a use for it

03-24-2020, 11:22 AM	#9
Mart Senior Member Join Date: May 2010 Location: Solihull, England. Posts: 8,755	Re: A bit of machining. Re-drilling a flywheel. Thanks for the interest fellas. I thought it would be of interest to 'barners as it has been discussed in a previous thread. (More than one, maybe). One thing I didn't dwell on was spacing the new holes away from the existing ones. Some techniques mentioned previously didn't do that and I thought it better to space the holes to avoid stress raisers in one area. Mart.