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Dewalt 7740 RAS

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Forum topic by Bill J. Griffin posted 06-02-2011 10:01 AM 4143 views 0 times favorited 12 replies Add to Favorites Watch
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Bill J. Griffin

92 posts in 1208 days


06-02-2011 10:01 AM

Topic tags/keywords: dewalt ras radial arm saw powershop 7740

I am refurbishing an old De Walt 7740 Radial arm saw, and was hoping that someone out there know something that may be of some help to me. I will try to add pics ltr. Tyvm

-- Shop's too small :( ... hey the decks pretty big :)!!!


12 replies so far

View philip marcou's profile

philip marcou

262 posts in 1254 days


#1 posted 06-02-2011 10:55 AM

Bill,
If you Google about De Walt radial saws there are many refurbishment stories there…
Let’s see a picture of yours . I have done this one here


It was basically a strip, clean, inspect and fix, spray, re-assemble. The older industrial ones are nice machines.

View Bill J. Griffin's profile

Bill J. Griffin

92 posts in 1208 days


#2 posted 06-02-2011 06:01 PM

Thanks Philip.
I will be getting some pics up this weekend.
Wow, what an awesome job you did in restoring yours, it looks great.

-- Shop's too small :( ... hey the decks pretty big :)!!!

View Bill J. Griffin's profile

Bill J. Griffin

92 posts in 1208 days


#3 posted 06-04-2011 04:09 AM

Here is some pics of my DeWalt ras.
any idea if “JB weld would work to glue the two halves of the switch plate together?

-- Shop's too small :( ... hey the decks pretty big :)!!!

View Jerry's profile

Jerry

2196 posts in 2204 days


#4 posted 06-04-2011 05:45 AM

Just wanted to chime in as we run a 790 and a 7730 in our small 4 man shop. They both get a lot of use. The 790 cuts our dasos and the 7730 is set up as a 90 degree crosscut saw and serves as a back up to the hitatchi sliding miter saw. We always backed up and guys would end up waiting to use the sliding mitee then the 7730 was added and now thw 7730 gets almost as much use as the sliding miter saw.

-- Jerry Nettrour, San Antonio, www.topqualitycabinets.net

View philip marcou's profile

philip marcou

262 posts in 1254 days


#5 posted 06-04-2011 05:48 AM

Bill,
I am not familiar with JB Weld, but would think that if you used an industrial epoxy combined with a backing plate of thin sheet metal it would be fine. From what I can see the upper portion looks like a housing for the switch, not as if it is under any stress..It could also be welded by someone competent with aluminium welding if you know anybody.

View bubinga's profile

bubinga

861 posts in 1324 days


#6 posted 06-04-2011 06:19 AM

Here is a link to, NBeener’s blog. Go Here, and scroll down,to the links, you will find a wealth of information
http://lumberjocks.com/NBeener/blog/21866

My blog here
Haven’t finished putting rest of , restore in, yet

-- E J ------- Always Keep a Firm Grip on Your Tool

View Beginningwoodworker's profile

Beginningwoodworker

13341 posts in 2330 days


#7 posted 06-04-2011 06:22 AM

Bill, thats a nice looking saw.

-- CJIII Future cabinetmaker

View bubinga's profile

bubinga

861 posts in 1324 days


#8 posted 06-04-2011 06:30 AM

Beginningwoodworker, has a cool one to !!!

-- E J ------- Always Keep a Firm Grip on Your Tool

View Bill J. Griffin's profile

Bill J. Griffin

92 posts in 1208 days


#9 posted 06-04-2011 07:28 AM

thanks flyforfun, sounds like you have a few nice ras’s around eh?
“JB Weld” is an epoxy Philip so I think I’ll give it a try like you say with a backing of sheet metal for strength. I live in a small town and don’t know any aluminum welders unfortunately.Thanks for the feedback. EJ you and Philip have been a wealth of info for me my friends lol. Thanks for all the input.
You’ve made my job easier. :) CJ Thank you very much, I picked it up for free from a customer who was throwing it out. Took it home, plugged it in, pushed on, wshshshsh. Nice sound.:)

-- Shop's too small :( ... hey the decks pretty big :)!!!

View bubinga's profile

bubinga

861 posts in 1324 days


#10 posted 06-04-2011 07:51 AM

There Is Allways More Than One Way To Do IT !!!

-- E J ------- Always Keep a Firm Grip on Your Tool

View Bill J. Griffin's profile

Bill J. Griffin

92 posts in 1208 days


#11 posted 09-16-2011 09:17 PM

check out www.radialarmsawrecall.com for FREE blade gaurd and a few other goodies!!!

-- Shop's too small :( ... hey the decks pretty big :)!!!

View emart's profile

emart

234 posts in 1285 days


#12 posted 12-22-2012 10:32 AM

I have that same model in my shop. from what i can tell mine is from about 1969-1970 the nice thing is that dewalt and black and decker STILL make and sell parts for these old machines. from what i can tell my saw had some use but most likely got put in a closet or barn for 25+ years since most of it is pristine still. I managed to score mine from the habitat for humanity store for $100 with the original stand though it needs some maintenance and a new blade. you can see some pics of it on my shop page. if you want i can scan a copy of my manual for you for more information

by the way that switch cover is probably cast aluminum which is hard as hell to weld(if not impossible) so using epoxy was definitely the best choice

-- tools are only as good as the hands that hold them https://www.custommade.com/by/emeraldcrafts/

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