BMT Build now under investigation

Building, Modding, Setup and Repair
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narcdor
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Re: BMT Build

Post by narcdor » 22 Oct 2015, 11:05

Yeah you'd definitely need your own custom sizes to be balanced on fanned fret, but what are they is the question?
Basses: Fender Mustangs, Narcdor Precision, Lindsey Precision, Nash Jazz, Framus Star Bass, EBMM Stingray
Amps: O'Neill B15 copy, Walkabout, Puma 900
Cabs: Ampeg Repro 15, Fender Neo 15
FX: TC Electronic clip on tuner

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Curto
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Re: BMT Build

Post by Curto » 28 Oct 2015, 11:50

Some progress shots from Brad:
Got the neck pre-fitted this morning, about to do the routing for the Pickups.
The neck pocket is seriously tight, there's about 3/4 of a mm in the whole thing. Will have to lightly rub the inside of the pocket with 400 to bring it back to tolerance once it's been lacquered.

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6 bolts!
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Next step will be truss slotting and glueing up the neck ready for radiusing and fret slotting. 10" radius.
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basshack
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Re: BMT Build

Post by basshack » 28 Oct 2015, 12:32

Interesting approach to drill the neck into place before doing the fret board work. I had to do a double take on the picture when I saw the screws sticking through. :red face
... dial in some "J" to angry it up!

Got gear but little talent!

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drbass
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Re: BMT Build

Post by drbass » 28 Oct 2015, 12:41

basshack wrote:Interesting approach to drill the neck into place before doing the fret board work. I had to do a double take on the picture when I saw the screws sticking through. :red face
You and I both, Blaine :) . I've been contemplating alternatives to threaded inserts and simple wood screws for my next builds and may have come up with an idea that might work. 30 minutes will be all it takes.

Looks great, and working to small tolerances will mean high quality instrument. What's the progress with the strings? Any further thoughts?

Regards,
Michael
- Kermit 6 fanned, Kermit Gaia 6 fretless, Kermit Rockmachine 5, Manta 5, ME1/5, Q 5, (Sandberg Classic S2-5), (Thumb-4)
- Genzler Magellan 800, 2 Genzler BA12-3
- EBS OctaBass, Boss MS-3, Line6 G50

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Curto
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Re: BMT Build

Post by Curto » 28 Oct 2015, 15:08

drbass wrote:What's the progress with the strings? Any further thoughts?
I've just come across this. Looks promising! I'll have a play and post my findings ...

http://stringtensionpro.com/
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basshack
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Re: BMT Build

Post by basshack » 28 Oct 2015, 15:32

Curto wrote:
drbass wrote:What's the progress with the strings? Any further thoughts?
I've just come across this. Looks promising! I'll have a play and post my findings ...

http://stringtensionpro.com/
That is interesting. I just have to work out what tension my current B string is and what I like as a tension. ;)
... dial in some "J" to angry it up!

Got gear but little talent!

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Curto
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Re: BMT Build

Post by Curto » 28 Oct 2015, 15:32

I could put in my custom scale length for each string (33" - 31")
Choose the tuning (standard B - G)
And then choose the string type (nickel, stainless ...etc)
And finally play around with the gauges to find a balanced tension ... Cool! :thumbup:

For using nickel plated strings, the balanced tension set with the .145 proves to be still very well balanced:
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For using Prosteels, a custom set would produce the best results:
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As opposed to a regular sets:
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Interestingly, nickels appear to have more tension than stainless steel.
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Curto
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Re: BMT Build

Post by Curto » 30 Oct 2015, 10:39

More update shots:
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About to do the final shaping and sand up to 400 before she's ready for 2k sealer and clear.
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PilbaraBass
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Re: BMT Build

Post by PilbaraBass » 30 Oct 2015, 11:26

Curto wrote:
Interestingly, nickels appear to have more tension than stainless steel.
Nickel has a higher density (SG) than stainless steel (nearly all steels, really)...

as the density goes up on a vibrating string, the tension must go up proportionally to maintain the same frequency.

freq = (1/2L) * sqrt(tension/density)
'98 Carvin AC40, '07 Squier JDAV, '91 P-bass, '96 Ibanez ATK300F, '15 Ibanez SR605
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narcdor
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Re: BMT Build

Post by narcdor » 30 Oct 2015, 12:38

Thanks for getting me all riled up for my own ideas for a next build!

Looking great so far, shaping up to be a killer. I'm interested to see if my eyes like the short scale 5 string fanned setup.
Basses: Fender Mustangs, Narcdor Precision, Lindsey Precision, Nash Jazz, Framus Star Bass, EBMM Stingray
Amps: O'Neill B15 copy, Walkabout, Puma 900
Cabs: Ampeg Repro 15, Fender Neo 15
FX: TC Electronic clip on tuner

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drbass
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Re: BMT Build

Post by drbass » 30 Oct 2015, 13:41

Amazing progress in very little time. Looks fantastic ... except:

I'm not a big fan of so much "real estate" behind the bridge. I suppose that's a design "feature" forced upon you by the short scale and the relatively normal ("conventional") body size and shape, which in turn determine the pickup locations. Minor point, but still: I can reach the first fret on my first build (35") MUCH easier than I can on my Thumb, or my Sandberg for that matter (both 34") because the bridge is right at the edge.

Anyway, as mentioned this shouldn't be a big problem thanks to the short scale.

Can't wait to see this after the clear coat is on!!!

regards,
Michael
- Kermit 6 fanned, Kermit Gaia 6 fretless, Kermit Rockmachine 5, Manta 5, ME1/5, Q 5, (Sandberg Classic S2-5), (Thumb-4)
- Genzler Magellan 800, 2 Genzler BA12-3
- EBS OctaBass, Boss MS-3, Line6 G50

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Curto
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Re: BMT Build

Post by Curto » 30 Oct 2015, 13:56

drbass wrote: I'm not a big fan of so much "real estate" behind the bridge.
+1
Oh hindsight would be a wonderful "super power". Because it's a 24 fret neck, rather than having the neck further down into the body, the bridge was brought further up.
In hindsight, I would have gone for 21 frets ...
Or simply have the neck extend further down into the body, lower the bottom horn a bit, bring the neck pickup down a bit too and have the bridge closer to the bottom end utilising that real estate ...
Or simply made the body a bit shorter ...

We'll see how she looks and plays when setup. Alembic have lots of real estate behind the bridge!
And yep, looking forward to seeing the clear coat go on and bring that grain out!
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drbass
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Re: BMT Build

Post by drbass » 30 Oct 2015, 14:21

On a positive note: it's beautiful-looking real estate :yep
- Kermit 6 fanned, Kermit Gaia 6 fretless, Kermit Rockmachine 5, Manta 5, ME1/5, Q 5, (Sandberg Classic S2-5), (Thumb-4)
- Genzler Magellan 800, 2 Genzler BA12-3
- EBS OctaBass, Boss MS-3, Line6 G50

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slowlearner
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Re: BMT Build

Post by slowlearner » 30 Oct 2015, 14:25

Some really lovely work there Curto. :)
Bassline "I'm not arguing.... I'm just explaining why I'm right."

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Curto
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Re: BMT Build

Post by Curto » 30 Oct 2015, 17:02

All sanded up and ready for a coat:
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Will be gloss finish on top ... thinking maybe a satin finish on the ash with the grain indentation. The back of the neck will be satin and the birdseye fingerboard will be gloss.
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