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3/4 Scale Duo Sonic Re-issue To Full Scale


Duff

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I recently purchased a 1993 Fender Duo Sonic Re-issue 3/4 scale guitar. I have not received the guitar yet, so I am not able to get the exact neck scale, but I believe it is 22". My intent is to have a nice project guitar and convert it into a full scale 25.5" neck. However, the more and more I research, it appears this might not be as easy as just slapping on any old Fender neck.

Does anyone have any tips, or starting ideas, or any general consensus on how I should start and/or go about trying to do this. From what I've gained so far, it may appear that I will have to move the bridge back, and being that it's a bridge that only sits in by 5 screws directly into the body, it might not be THAT hard of a task.

Lend me some help.

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fender had a great idea on the duo-sonics. essentially they came in 22.5 and 24" scale lengths and the necks were interchangeable at least up till about the 70's. it meant the bodied could be identically machined so was probably done to save costs

sadly the reissues don't use either of these scale lengths so it will involve moving the bridge. iirc the bridge needs to be about 3/8" further back for a 24" scale, obviously measure to confirm exact dimensions

just about to spray a duo-sonic style build myself

duotest1.jpg

essentially its DS2 body shape with DS1 styling... and a 24" neck

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@WezV

Hey also just curious. I know the contours and routes are different, but do the duo sonic and mustang share the same body as far as dimensions?

The reason I ask is because I would like to take off the duo sonic pick guard and replace it with a mustang style "arched" style with a metal plate for the control knobs and jack.

Edited by Duff
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Got the guitar in the mail today. Played it for about 3 minutes and immediately started stripping it down. I really don't think the neck will be too big of an issue, even without moving the bridge...On the Duo Sonic, the saddles are VERY long, over an inch, which allows for lots of wiggle room when you move them back all the way. I put on the 25.5 scale neck, which fit perfectly in the pocket and did some measurements. I'm able to get 12.75 inches from nut to 12, and from 12 to bridge without an hassle.

Thanks for the initial help guys. I plan to post pictures when I'm done, whenever I finish. If I run into any big time problems, I'll maybe start a new thread!

Duff

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Got the guitar in the mail today. Played it for about 3 minutes and immediately started stripping it down. I really don't think the neck will be too big of an issue, even without moving the bridge...On the Duo Sonic, the saddles are VERY long, over an inch, which allows for lots of wiggle room when you move them back all the way. I put on the 25.5 scale neck, which fit perfectly in the pocket and did some measurements. I'm able to get 12.75 inches from nut to 12, and from 12 to bridge without an hassle.

Thanks for the initial help guys. I plan to post pictures when I'm done, whenever I finish. If I run into any big time problems, I'll maybe start a new thread!

Duff

dont forget you need a little extra distance for intonation, can you get any more than 12.75" on the 12th fret to saddle measurement? you will need at least 1/8" extra. its not ideal having the saddles all the way back, but if you are happy with that (and can get the guitar strung up like that) then it does save more work

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IT CAN BE DONE!!!!! So after sanding off the paint completely, I put the guitar back together with the new 25.5 scale neck. The sanding took me about 4 days, sanding in 3-4 hour increments with 80 Grit sandpaper and a sanding block. Then some quick fine sanding, and attached the pickguard, bridge, neck, electronics, and new strings to test out everything. INTONATION RIGHT ON THE MONEY FIRST TUNING!!! Not to mention the guitar plays about 100x better than the 3/4 scale neck...

I will hopefully post pictures of my progress from start to finish as I have been taking photos... Now on to the truly hard part, sealing, sanding, priming, painting, and clear coating...I plan on using just rattle cans and lots and lots of clear coat....

Thanks again guys... Wish me luck...

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297252_10100589431401642_10137247_56879921_373202568_n.jpg

294043_10100589431117212_10137247_56879919_463250969_n.jpg

Here's where I'm at so far. Opposite from a previous post I'm going for a DS2 look, with a DS1 body. As you can notice, the factory mustang pickguard is slightly oversized and hangs off the bottom. However, I can sand that right down and it should look okay...

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