Finally found a Davidson that could work for me...

[William]

Well,
I finally found a Davidson that could work for me. It's on the low end of my size cut-off, but in the ball park. On my limited cycling budget I think I can do it. I have always wanted one ever since seeing the one my USCF coach had back during my racing days. A nice purple/black Davidson with the Space needle logo on the ST. His was the perfect geometry for quick crit style racing.

I'm thinking a little retro on this one.

Whadya think?


William

[rcnute]

I dig. Here's mine. I wish it weren't black; maybe I'll take it to Elliott Bay for a repaint.

[William]

I dig. Here's mine. I wish it weren't black; maybe I'll take it to Elliott Bay for a repaint.

Black is cooooool. :cool:



William

[cs124]

That frame looks pretty sweet but I don't think it will be the end of your search.

You know that a BLE or MXL will be the "stuff" for a big guy like you. Hold out for one of them.... or save up for a bespoke 'guch. :beer:

[Climb01742]

white frames are always nice. looks cool to me. but cs124 makes a good point. big william, a dude with your power was just made for an emma. don't know if it floats your boat, but might be a cool idea. i know the jerk has a pretty big one floating around his shop.

[soulspinner]

Big guys on white bikes have to ride fast to keep the podium girls at bay-grab it-looks in great shape!

[capybaras]

Love it :banana:

[rphetteplace]

what are the geo specs on that thing? just curious as I'm about your size and that thing looks f'n huge.

fyi mxl's weren't made big enough for jolly greens like me and you william.

[KevinK]

That is a nice BIG Davidson! My Davidson is on the opposite end of the size scale, 50cm Pista built in the late 70's.

[jthurow]

What're the specs on that bad boy? If you don't have a bike with down-tube shifters, that's a perfect candidate.

jimi

[d_douglas]

I made a few road trips down to Seattle and considered spending some of my hard earned student loan money on a Davidson. I didn't in the end, but that was simply logic rearing it's ugly head.

They are beautifully built frames and Bill Davidson is a master, in my opinion. He is also an interesting guy to boot, so that makes dealing with him more fun! (I interviewed him for some research relating to my Master's thesis!)

[steelrider]

Nice frame big guy! What are the numbers on it?

[Ahneida Ride]

Nice frame big guy! What are the numbers on it?

some of us are curious .... :p

[William]

Thanks for the replies folks!

KevinK...love the Davidson Pista! :cool:


CS & James...An Emma would be great..though a little more FRN's then I can likely spend at the moment, same with a Yamaguchi...though they are on my list and I will own one of each one day. Oh yes, I will. :D

Ok, you want Specs? I got your specs right here!!.....

A Davidson 64 Impulse:

Frame Style: Impulse 64 39723.61
Designed by: Bill Design for: Stock 33448.77
Tubing: TT Oversize
FRAME DESIGN PARAMETERS
Frame size - to top of TT (cm) 64 25.19685 in. To Center= 62.49641
Top tube length (cm) 60 23.62205 in.
Seat tube angle (deg) 72
Head tube angle (deg) 74
Fork rake 39 1.535433 in.
BB drop 64 2.519685 in.
Chainstay length 41 16.14173 S-Stays 0 mm lower:
Top tube slope (deg) 0 s-stay cut = 544.0282
Crank arm length 180 s-stay ctc = 574.0282
Forefoot length 100 ss rise angle= 68.22662
dropout angle= 77.20708
PROGRAM CALCULATIONS
Front center 602.9364 23.73765 in.
Toe - F Whl. clearance 3.215903 R Whl clear = 9.088644
Trail 56.06152 2.207146 in.
Bottom bracket height 273 10.74803 in.
HT room between TT and DT 139.7288 DT-F.Whl clear = 23.3435
Standover height, mid-TT (cm) 88.16762 34.71166 in.
Wheelbase (cm) 100.4504 39.54741 in.

TUBE CUT SPECIFICATIONS
Headtube cut 215.788 Seat tube cut= 618.9
Seattube/toptube angle 72 18 (comp) 2nd cut 13.66668
TT cut (measured underneath) 567.9166 on top = 569.0084
Headtube/toptube angle 74 deg 16 (comp)
DT cut (measured underneath) 588.2362 on top = 603.7616 ctc = 631.5657
Downtube/headtube angle 61.48391 28.51609 (comp)
C-stay cut (including dropout) 395.0858 w/o drop= 364.0858
S-stay splay angle: side style= 5.768983 deg fastback = 6.987662 deg
C-stay splay angle 7.976769 deg C-stay drop angle= 8.980457
SS cut (6mm beyond seat point) 544.0282 Fastback angle= 39.77338 50.22662
SS cut -52mm= 492.0282 SS ctc= 574.0282 Dropout angle= 77.20708

HARDWARE TUBING: GAUGE AND TYPE
Top tube diameter 28.6 TT: .9/.6 Prestige (DT)
Down tube diameter 28.575 DT: 1.0/.7 Prestige
Seat tube diameter (at TT) 28.575 ST: 1.0/.8/.6 Prestige
Seat tube size at BB (F - R) 28.575 CS: 1.0 Prestige 22.2 mm
" at R whl clearance pt. 28.575 SS: .8 Prestige 14mm
Head tube diameter 31.75
Bottom shell diameter 35
Down tube offset at BB 0 Max Offset = 3.2125
Seat lug shoulder 3.6 ST above TT = 1.04229
Extra seat tube above fr. size 0 ST above TT = 4.64229
Top Head lug up 26.2 HT above TT = 6.771635
Bottom head lug down 31.9 HT below DT = 7.014674
Crown hole to F axle 354 Brake reach = 43
Crown flange height 8
Headset stack height 13.5 -DA, Mavic, Stronglight
Rear dropout up 36 \
Rear dropout forward 31 ->Ritchey vertical
Drop-clr (to remove R whl) 5 / CS offset = 8
R Hub width 130
R Tire 700c tubular(21mm) 337 Weight: Frame Fork
F Tire 700c tubular(21mm) 337 g. 2230 715
Rim diameter (front) 622 lb. 4.911894 1.57489



Enough Specs for ya? :D




William

[William]

Btw, I'm thinking of going a bit retro on this one.




William

[paczki]

Btw, I'm thinking of going a bit retro on this one.




William

That's great! Davidson's are some of the coolest bikes out there.
If you need some stuff for a retro build come to my basement next time you're in Boston. There are some parts with your name on them.

[William]

That's great! Davidson's are some of the coolest bikes out there.
If you need some stuff for a retro build come to my basement next time you're in Boston. There are some parts with your name on them.

Thank you!! I'll have to take you up on your offer. :cool:




William

[William]

That's great! Davidson's are some of the coolest bikes out there.
If you need some stuff for a retro build come to my basement next time you're in Boston. There are some parts with your name on them.


PM'in ya big guy. :)



William

[rwsaunders]

Thanks for the replies folks!

KevinK...love the Davidson Pista! :cool:


CS & James...An Emma would be great..though a little more FRN's then I can likely spend at the moment, same with a Yamaguchi...though they are on my list and I will own one of each one day. Oh yes, I will. :D

Ok, you want Specs? I got your specs right here!!.....

A Davidson 64 Impulse:

Frame Style: Impulse 64 39723.61
Designed by: Bill Design for: Stock 33448.77
Tubing: TT Oversize
FRAME DESIGN PARAMETERS
Frame size - to top of TT (cm) 64 25.19685 in. To Center= 62.49641
Top tube length (cm) 60 23.62205 in.
Seat tube angle (deg) 72
Head tube angle (deg) 74
Fork rake 39 1.535433 in.
BB drop 64 2.519685 in.
Chainstay length 41 16.14173 S-Stays 0 mm lower:
Top tube slope (deg) 0 s-stay cut = 544.0282
Crank arm length 180 s-stay ctc = 574.0282
Forefoot length 100 ss rise angle= 68.22662
dropout angle= 77.20708
PROGRAM CALCULATIONS
Front center 602.9364 23.73765 in.
Toe - F Whl. clearance 3.215903 R Whl clear = 9.088644
Trail 56.06152 2.207146 in.
Bottom bracket height 273 10.74803 in.
HT room between TT and DT 139.7288 DT-F.Whl clear = 23.3435
Standover height, mid-TT (cm) 88.16762 34.71166 in.
Wheelbase (cm) 100.4504 39.54741 in.

TUBE CUT SPECIFICATIONS
Headtube cut 215.788 Seat tube cut= 618.9
Seattube/toptube angle 72 18 (comp) 2nd cut 13.66668
TT cut (measured underneath) 567.9166 on top = 569.0084
Headtube/toptube angle 74 deg 16 (comp)
DT cut (measured underneath) 588.2362 on top = 603.7616 ctc = 631.5657
Downtube/headtube angle 61.48391 28.51609 (comp)
C-stay cut (including dropout) 395.0858 w/o drop= 364.0858
S-stay splay angle: side style= 5.768983 deg fastback = 6.987662 deg
C-stay splay angle 7.976769 deg C-stay drop angle= 8.980457
SS cut (6mm beyond seat point) 544.0282 Fastback angle= 39.77338 50.22662
SS cut -52mm= 492.0282 SS ctc= 574.0282 Dropout angle= 77.20708

HARDWARE TUBING: GAUGE AND TYPE
Top tube diameter 28.6 TT: .9/.6 Prestige (DT)
Down tube diameter 28.575 DT: 1.0/.7 Prestige
Seat tube diameter (at TT) 28.575 ST: 1.0/.8/.6 Prestige
Seat tube size at BB (F - R) 28.575 CS: 1.0 Prestige 22.2 mm
" at R whl clearance pt. 28.575 SS: .8 Prestige 14mm
Head tube diameter 31.75
Bottom shell diameter 35
Down tube offset at BB 0 Max Offset = 3.2125
Seat lug shoulder 3.6 ST above TT = 1.04229
Extra seat tube above fr. size 0 ST above TT = 4.64229
Top Head lug up 26.2 HT above TT = 6.771635
Bottom head lug down 31.9 HT below DT = 7.014674
Crown hole to F axle 354 Brake reach = 43
Crown flange height 8
Headset stack height 13.5 -DA, Mavic, Stronglight
Rear dropout up 36 \
Rear dropout forward 31 ->Ritchey vertical
Drop-clr (to remove R whl) 5 / CS offset = 8
R Hub width 130
R Tire 700c tubular(21mm) 337 Weight: Frame Fork
F Tire 700c tubular(21mm) 337 g. 2230 715
Rim diameter (front) 622 lb. 4.911894 1.57489



Enough Specs for ya? :D




William


Willy...Do you think that you could take the dimensions out to another decimal point? :cool:

[William]

Willy...Do you think that you could take the dimensions out to another decimal point? :cool:


My chances for doing so are about 93.088644444% :D




William

[beungood]

I love that rig Bro it's effen badass!

[Ahneida Ride]

Sold America .... I'll be right over to pick her up ! ;)

Love white bikes ....