Author Topic: Attaining top speed  (Read 2988 times)

0 Members and 1 Guest are viewing this topic.

hillntx

  • Shriner Bulleteer
  • Grease Monkey
  • ****
  • Posts: 306
  • Karma: 0
  • 2011 G5 Classic, 2004 Sixty-5, 2010 C5 Classic
on: September 01, 2012, 02:10:53 pm
I've seen several posts from people claiming speeds of 80+ mph on their UCE Enfields, is this in relatively stock configuration?  I'm 6' 220# riding a C5 with K&N and EFI silencer and I can get to 60mph pretty easily, but it crawls after that.  I think the max I've hit is maybe 70 on a relatively flat interstate.  I'm not pegging the throttle, but its pretty wide open.  I keep looking for the next gear, but it's not there.  Any thoughts?


Fogrunner

  • Bulleteer
  • ***
  • Posts: 106
  • Karma: 1
Reply #1 on: September 01, 2012, 02:36:29 pm
I hit speeds of 70mph with ease, when I am on a suitable road. On the national highways here in Philippines, cruising at 60 to 65 mph is a breeze. I have fitted a Hitchcock's exhaust and EFI pipe. Still waiting on the K&N filter and Dynojet Power Commander.
Phil
2012 G5 Classic


ace.cafe

  • Grand Gearhead
  • *****
  • Posts: 14,457
  • Karma: 1
  • World leaders in performance/racing Bullets
Reply #2 on: September 01, 2012, 03:19:03 pm
Basically, it comes down to wind drag.
If you have low drag, you can reach the hp peak rpm of about 4750 rpm in top gear, which is somewhere around 80mph.
If your air drag is higher, then the bike poops out at a lower speed.

Try getting lower down on the tank, in a crouch, and you'll probably gain about 5mph in speed.
Tight clothes help, and flappy clothes hurt.
It's only got about 19.8hp at the rear wheel. It needs all the help it can get.
Home of the Fireball 535 !


barenekd

  • Grand Gearhead
  • *****
  • Posts: 5,516
  • Karma: 0
Reply #3 on: September 01, 2012, 05:26:44 pm
I can get over 80 tucked in, 70 comes quite easily. I get up to 70 going down the freeway if I don't watch what I'm doing. My speedo reads maybe a couple of miles an hour fast.
Bare
2013 Moto Guzzi V7 Racer
2011 Black Classic G5 (RIP)
I refuse to tiptoe through life only to arrive safely at death
http://www.controllineplans.com


Ducati Scotty

  • Grand Gearhead
  • *****
  • Posts: 7,038
  • Karma: 0
  • 2010 Teal C5
Reply #4 on: September 01, 2012, 05:43:19 pm
6', 225#, dead stock engine except for an NGK spark plug.  70-75 is easy.  To hit 80-85 if I've got to have a long stretch.  Now that's on the speedo, I haven't double checked with a GPS or anything. 

How many miles on your bike?  It frees up considerably after several thousand miles.

Scott


GSS

  • Grand Gearhead
  • *****
  • Posts: 1,590
  • Karma: 0
Reply #5 on: September 01, 2012, 11:19:20 pm
+1.  Patience is the key.....it seems to add +5 real MPH with each passing 500-600 miles till you get to a 75-80 by GPS after a few thousand miles.
2022 Continental GT 650 Dux Deluxe
2019 Himalayan Snow
2019 Interceptor 650 - Chrome...off the first boat!
Previous REs:
2021 Meteor 350 Supernova Blue
2014 Continental GT 535 - Red...lowest VIN off the first boat!
2010 Classic 500 - Teal Chrome


hillntx

  • Shriner Bulleteer
  • Grease Monkey
  • ****
  • Posts: 306
  • Karma: 0
  • 2011 G5 Classic, 2004 Sixty-5, 2010 C5 Classic
Reply #6 on: September 02, 2012, 02:08:12 am
Thanks for the responses.  I'm just under 1000 miles on the bike, so it sounds like I just need to keep riding.


gremlin

  • Grand Gearhead
  • *****
  • Posts: 1,873
  • Karma: 0
  • "Do one thing each day that scares you"
Reply #7 on: September 02, 2012, 02:17:12 am
Thanks for the responses.  I'm just under 1000 miles on the bike, so it sounds like I just need to keep riding.

yep,  after 2000 miles I'm noticing an extra 5-10 mph with the same "effort" on the daily commute.  15-20 extra with a tailwind !
1996 Trophy 1200
2009 Hyosung GV250
2011 RE B5


Bulletman

  • Grand Gearhead
  • *****
  • Posts: 773
  • Karma: 0
  • 2011 - C5 Classic Black
Reply #8 on: September 02, 2012, 02:25:45 am
Thanks for the responses.  I'm just under 1000 miles on the bike, so it sounds like I just need to keep riding.
I'm in the same boat, I've got 1350 miles and have only once managed to hit 80mph on a long flat country road, and that tooka while to get to.  I seem to otherwise have a hard time getting to 70 mph on the freeway. ( I normally don't do freeways ).
I guess putting on more miles will seem to resolve this issue.
"A Blast from my Past"
Black C5 2011


ace.cafe

  • Grand Gearhead
  • *****
  • Posts: 14,457
  • Karma: 1
  • World leaders in performance/racing Bullets
Reply #9 on: September 02, 2012, 03:25:56 am
Guys, it's a good "rule of thumb" to not exceed 75%-80% of maximum speed for a cruising speed.
That means cruising 60-65mph for a bike that can do 80mph as a top speed.
I realize that the bike seems to be able to cruise at 70mph, but I think that's pushing it a bit, realistically.
Home of the Fireball 535 !


hillntx

  • Shriner Bulleteer
  • Grease Monkey
  • ****
  • Posts: 306
  • Karma: 0
  • 2011 G5 Classic, 2004 Sixty-5, 2010 C5 Classic
Reply #10 on: September 02, 2012, 06:31:42 am
Honestly, for me my C5 is a cruise around town bike, I seldom attempt or have any desire to take it over 60mph.  Mostly I just wanted a reality check to see if it was operating similar to others.  I have an ST1300 for speed and distance.


The_Rigger

  • Grease Monkey
  • ****
  • Posts: 482
  • Karma: 0
  • Mom Always Liked You Better...
Reply #11 on: September 02, 2012, 08:23:31 am
I think the only way I'm ever gonna break the Ton on Fiona is to drop her out of an airplane.  Frankly, I'm not that anxious to hit 100mph...
-Dave
2012 C5 Special
Central Michigan, USA (when I'm not working somewhere else)


csbdr

  • Bulleteer
  • ***
  • Posts: 217
  • Karma: 0
Reply #12 on: September 05, 2012, 09:18:13 pm
I got it over 90, just once. Loooong downhill on the interstate, wind at my back, with the upswept can, nothing flapping, tucked down to the speedo and feet on the rear passenger pegs.


csbdr

  • Bulleteer
  • ***
  • Posts: 217
  • Karma: 0
Reply #13 on: September 05, 2012, 09:21:10 pm
 70 is easily hit just riding normally, but im hitting near 6000 miles on the bike now. Bike is so twitchy at really high speeds that I wouldnt want to do it again. On a Triumph, sure, but not this one.


barenekd

  • Grand Gearhead
  • *****
  • Posts: 5,516
  • Karma: 0
Reply #14 on: September 05, 2012, 09:23:57 pm
But, no one is going to make a ton if the wheels are on the ground unless you do some serious regearing, like about 2 teeth over stock on the CS sprocket. The ECU will cut out before you get there.
Bare
2013 Moto Guzzi V7 Racer
2011 Black Classic G5 (RIP)
I refuse to tiptoe through life only to arrive safely at death
http://www.controllineplans.com


barenekd

  • Grand Gearhead
  • *****
  • Posts: 5,516
  • Karma: 0
Reply #15 on: September 05, 2012, 09:26:15 pm
Quote
On a Triumph, sure, but not this one.

My Enfield is more stable than my Triumph Scrambler was. That thing was a real head shaker.
Bare
2013 Moto Guzzi V7 Racer
2011 Black Classic G5 (RIP)
I refuse to tiptoe through life only to arrive safely at death
http://www.controllineplans.com