Mark VII Info, maybe good maybe bad

[dgreen810]

I was sitting in the shop watching the golf tournament and looked around admiring some of my goodies when it suddenly brought my attention to my Delta 14-070 14" floor standing drill press. Why might you ask? A few months ago I purchased a Mark VII and ended up junking it out because the motor needed to be rewired, and the plastic rack came off in pieces to name a few negatives. I had read of others trying to solve the plastic rack problem from making one of wood, paying a ridicules amount of money to have one machined of aluminum or steel. I don't remember reading a post with this suggestion, if so let me know and I will delete it.

Back to the Delta, looking at the raise and lower rack, it seems to look exactly like the plastic rack I threw in the garbage can. I still have the worm gear and shaft that came off the Mark VII and it seems to fit the teeth on the Delta raise rack. It is about 25-27" long (Teeth), about the same width 5/8" approximately and the concave about the same as the way tube on the SS. Yes the shaft on the Delta is little larger but when they cut the concave,it's not too critical, and it would probably fit the SS.

You can order the raise rack part # 131008 from Delta for $19.76 plus shipping.

I sure wish I still had the old Mark VII just to see if I could make it work.

Like I said maybe good, or maybe bad

If anybody wants a copy of the part list and schematic of the Delta 14-70 send me message.

Good luck

Don G

[algale]

I don't have Mark VII but I like your ingenuity and I bet at those prices it would be worth taking a flier if you wanted to replace your Mark VII rack.

[JPG]

So much fer false hope!

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[BuckeyeDennis]

So much fer false hope!

Clipboard01.jpg

Try here: http://stores.renovoparts.com/1312008-rack-for-17-900/

[dgreen810]

As a follow-up, I disassembled the drive on my Mark VII head stock and removed the tracking gear. As you can see in the attached photos, it meashes perfectly with the raise and lower rack on my Delta 14" free standing drill press.

Don Green

[JPG]

As a follow-up, I disassembled the drive on my Mark VII head stock and removed the tracking gear. As you can see in the attached photos, it meashes perfectly with the raise and lower rack on my Delta 14" free standing drill press.

Don Green

Thank You for posting those pix. I received a rack from Renovoparts yesterday and it appears to have the teeth skewed at a slight angle.

The profile matches the gear as does yours, but the pinion becomes misaligned due to the skew.

Pix coming.

rack teeth skew 1312008.jpg (567.91 KiB) Viewed 4151 times

Could you please verify your rack and pinion gear(the drill press gear) have both have straight teeth before I go into unhappy customer mode.

TIA (again)

[dgreen810]

James

The rack teeth on my Delta are not skewed. They are at 90 degrees. I am thinking the rack you received in not a direct replacement for the original Delta rack. The reason I say this is the rack you have pictured would not work on my drill press. I think a call to your supplier is in order.

James notice in my photos the gear from the Mark VII is setting at 90 degrees to the rack.

Don G

[JPG]

Back in the first post you mentioned part# 131008. Could you please verify that is the part # in your manual. I think yours is an earlier model than the '14-070' parts listed by delta on line. The part# I ordered was 1312008. I Assumed then the '2' was dropped when you typed it. Now I think otherwise!

[dgreen810]

JPG

You have an email

Don G

[dgreen810]

JPG

Your right I did make a typo error in my first post. It should have read 1312008. You obviously ordered the correct number, however I still believe the rack you received is not correct. There is no way a rack with skewed teeth would work on my drill press. I noticed Renovoparts (spelling ?) also lists the pinion gear part number 1311007 if you give them a call get someone to take a look at it and see if the teeth are skewed. I would bet they are not.

Don G