High Speeds on Dyna
Road Warrior
Joined: Jul 2007
Posts: 1,707
Likes: 4
From: Newtown, PA
Anyone have any experience with Dynas significantly modded, how fast have you had them? My stage 1 Streetbob been to 110-115 several times, and I am comfortable up there. Short pulls I'm talking here.
Went with 120R crate swap this winter. Hit 110 today... in 4th gear...with revs left. So I'm wondering how fast it'll go. And whos been there...
Also note I'm on spoke wheels. Factory rim/hub and stainless spokes from HDW. Laced by me, trued by a pro. Getting a true track, the alloy art dxr I ordered months ago still no eta... Thinking steering stabilizer also.
I calculate theoretical top speed 187mph at 6800rpm. That can't be right...
Went with 120R crate swap this winter. Hit 110 today... in 4th gear...with revs left. So I'm wondering how fast it'll go. And whos been there...
Also note I'm on spoke wheels. Factory rim/hub and stainless spokes from HDW. Laced by me, trued by a pro. Getting a true track, the alloy art dxr I ordered months ago still no eta... Thinking steering stabilizer also.
I calculate theoretical top speed 187mph at 6800rpm. That can't be right...
Have you tried using the Screaming Eagle High Speed Spokes? They are lighter, stronger and have less coefficient of drag than regular spokes. I am thinking of getting them. I calculate that they can give me a theoretical, additional, .0075MPH on the top end.
Outstanding HDF Member
Joined: May 2008
Posts: 2,166
Likes: 4
From: la
The speedo is off about 10% so 220 is more like 200, it did have a little left in it but the road was gettin short, it's an unrestricted 2000 model with plenty of mods.
Road Warrior
Joined: May 2010
Posts: 1,953
Likes: 1,168
From: Northern Colorado
after my new build I've regularly slammed into the 6.5k limiter in 5th gear accellerating hard. Speedo pegs about 5k in 5th and it runs hard til the limiter. Speedo's are always off but I'd say it's an honest 130-140mph bike
Road Warrior
Joined: May 2008
Posts: 1,955
Likes: 6
From: Little Rock
Advanced
Joined: Oct 2009
Posts: 72
Likes: 0
From: Central Maine
2008 FXDF that has no mods and have no problem burying the speedo at 120 with bags , a windshield (short) and the girlfriend punching me in the back
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Road Master
Joined: Nov 2010
Posts: 1,115
Likes: 69
From: Bay Area, NorCal
from JohnAE:
"... the rest of the motorcycle isn't up to the task."
Not to mention a rider's reaction times! Not tryin' to spoil anyone's fun, for we all give in to the need for speed at various times (did 105mph on my FXR in AZ w/o a skid lid!), but goin' really fast is a little sobering when you start looking at the numbers: at a sustained 100 mph you're covering the 1/4 mile in a little under 9 sec, and the 1/8 mile in under 4-1/2 sec. Moving that quickly doesn't give you a whole lotta time to twitch the handlebars when you try to maneuver around something that "suddenly" appears in your line of vision on the roadway. But that's what makes goin' fast such a rush, eh?!?
"... the rest of the motorcycle isn't up to the task."
Not to mention a rider's reaction times! Not tryin' to spoil anyone's fun, for we all give in to the need for speed at various times (did 105mph on my FXR in AZ w/o a skid lid!), but goin' really fast is a little sobering when you start looking at the numbers: at a sustained 100 mph you're covering the 1/4 mile in a little under 9 sec, and the 1/8 mile in under 4-1/2 sec. Moving that quickly doesn't give you a whole lotta time to twitch the handlebars when you try to maneuver around something that "suddenly" appears in your line of vision on the roadway. But that's what makes goin' fast such a rush, eh?!?
