Thunderbird Sport not starting in the cold? - Page 2 - Triumph Forum: Triumph Rat Motorcycle Forums
» Main Menu

Discussion Forums
 » Twins
 » Tiger
 » General
 » RAT

Features
 » Blogs

Motorcycle.com Links

Contribute
 » Photo

Motorcycle Forums
» Insurance
» Sponsors
» Our Partners
»ATV Reviews
»Motorcycle Games

Hinckley Classic Triples 885cc Classic Styled T3's: Legend, Thunderbird, Thunderbird Sport & Adventurer.

Reply
 
LinkBack Thread Tools Display Modes
Old 11-20-2012, 03:32 AM   #11 (permalink)
Senior Member
World SuperBike
Main Motorcycle: 1999 T'Bird Sport
 
lovecuba's Avatar
 
Join Date: Apr 2007
Location: Rangiora, New Zealand
Posts: 2,055
Extra Motorcycle: 1977 T140
Cold Start

Quote:
Originally Posted by Cyclepath View Post
WSC is correct, it is simply an en-richer circuit. My TBS starts perfectly using the full en-richer to start, then I back if off to the point of a slightly elevated idle speed for a few minutes as I ride off.

If your's doesn't start correctly using full en-richer, and in fact starts better when you only use part of it's enrichment, it would seem that either your low speed jet is too large, or your idle mixture screws are set way too rich, or a combination of both??
Running 40 on pilots
120 on mains
Factory Pro Needle on 3rd setting
Idle screws @ 2.5 turns out.
Float levels @ 17 mm

90% of cold starts need no assistance, the other 10% when bike left out in frost (or snow) generally overnight. This is not a fault, in fact it is great, good for the starter motor as even a small amount of unburnt excess fuel in the combustion chambers can raise the compression ratio
lovecuba is online now   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 11-20-2012, 02:11 PM   #12 (permalink)
Lifetime Premium
Site Supporter
Team Owner
Main Motorcycle: 98 Thunderbird
 
Slinky's Avatar
 
Join Date: Jun 2002
Location: Surrey, UK
Posts: 4,747
Other Motorcycle: 03 Speedmaster
Quote:
Originally Posted by Cody Strife View Post
I seen bonnevilles that are fuel injected yet have a choke. do they mechanically do anything at all, or do they simply open and close contacts?
All that does is raise the idle speed, it's cheaper than a stepper motor.
__________________
98 Thunderbird, 03 Speed Master
Slinky is offline   Reply With Quote Quick reply to this message
Old 11-21-2012, 03:05 PM   #13 (permalink)
Senior Member
World SuperBike
Main Motorcycle: my 1999 triumph legend
 
ssevy's Avatar
 
Join Date: Aug 2007
Location: Southern Adirondacks NY
Posts: 1,992
Other Motorcycle: 1995 Triumph Tiger
These bikes flood really easily, and I think the primary cause is a weak battery. The cranking speed of the starter can be deceiving, as it can sound normal and yet you'll still not be getting much fire to the plugs.
Back when I was a kid, we had several "doodlebugs" (ours were chopped chevrolet cement trucks) and we always got our batteries at a junk yard for them. If you didn't get those straight 6 chevys started quickly, the battery would go flat, and then you would have to rummage around the battery pile trying to find one with enough juice to turn it over.
When I first got my Legend as a used bike, it would crank like a bastard at the first push of the starter button, but would fade fast if it didn't fire soon.
By the way, put in 42 mains and you'll not be needing that enricher very often. Most days in warm weather, I just touch the starter button and she fires up and instantly goes to a smooth idle.
ssevy is offline   Reply With Quote Quick reply to this message
Old 02-03-2013, 02:33 PM   #14 (permalink)
New Member
Production 125
Main Motorcycle: Triumph Thunderbird Sport
 
phoundog's Avatar
 
Join Date: Jul 2011
Location: Calgary, Alberta
Posts: 5
Other Motorcycle: Suzuki DRZ-250
Smile low tech cold start method

Sorry to add late to the discussion, but only tried this recently and it worked like a charm. Because there's not enough cold cranking amps to feed the ignition, I needed to warm up the engine components before trying to fire it up. Ran a space heater under the bike cover (being careful not to block the rear of heater) to let warm air circulate to engine for 5-6 hours (or until the engine felt warm to touch). The TBS fired up in a couple of tries after sitting cold turkey in an unheated garage for the last 3 months of a cold Canadian winter (it's a long story why I didn't properly winterize it to begin with).

I also don't rely on the choke lever much, just open the idling screw to get up to ~1000rpm at first and when the rpms jump, then dial the screw back down to 1000rpm for normal idling.
Attached Thumbnails
Thunderbird Sport not starting in the cold?-image.jpg  
phoundog is offline   Reply With Quote Quick reply to this message
Old 02-03-2013, 07:08 PM   #15 (permalink)
triumphrat.net Vendor
Formula Extreme
Main Motorcycle: T'bird
 
jaguartvr's Avatar
 
Join Date: Jan 2008
Location: surrey, UK
Posts: 839
Other Motorcycle: wide glide
Extra Motorcycle: T140v
[QUOTE=ssevy;2430917]These bikes flood really easily, and I think the primary cause is a weak battery.


Never a truer word said.
__________________
WWW.RetroCafeRacer.com
Solo Seats, Fender Eliminator kits, Custom Fenders and much more.
jaguartvr is offline   Reply With Quote Quick reply to this message
Old 02-03-2013, 07:44 PM   #16 (permalink)
New Member
Production 125
Main Motorcycle: Triumph Thunderbird Sport
 
phoundog's Avatar
 
Join Date: Jul 2011
Location: Calgary, Alberta
Posts: 5
Other Motorcycle: Suzuki DRZ-250
low tech cold start method

[quote=jaguartvr;2493883]
Quote:
Originally Posted by ssevy View Post
These bikes flood really easily, and I think the primary cause is a weak battery.


Never a truer word said.
Probably right about the battery. I made sure it was charged up before attempting to start, but warming the engine made a difference 'cause I've tried starting a number of times before with a fully charged battery without success.
phoundog is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Triumph Forum: Triumph Rat Motorcycle Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter your valid email address, that can receive an automated confirmation message. Otherwise, you won't be able to gain full access.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Jump Starting and cold cold temps ztolley The Rocket Science Forum 25 06-04-2013 03:19 AM
need some basic info on the Thunderbird/Thunderbird Sport ohiorider Hinckley Classic Triples 23 12-06-2010 12:49 PM
Cold Starting T-100 dgreene Twins Technical Talk 14 02-27-2010 07:41 AM
Starting from cold slunker Triumph SuperSports 4 05-14-2009 08:27 PM
cold starting kdrake Twins Talk 9 01-14-2006 09:45 AM

Powered by vBadvanced CMPS v3.2.2

All times are GMT -4. The time now is 06:06 AM.



Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Motorcycle News, Videos and Reviews
Honda Grom Forum Harley Davidson Forum Honda 600RR Forum Kawasaki Forum Yamaha R6 Forum Yamaha FZ-09 Forum
1199 Panigale Forum Roadglide Forum Honda CBR1000 Forum Vulcan Forum Yamaha R1 Forum Yamaha R3 Forum
Ducati Monster Forum Harley Forums Honda CBR250R Forum ZX10R Forum Star Raider Forum Yamaha Viking Forum
Suzuki GSXR Forum V-Rod Forums Honda Shadow Forum Kawasaki Motorcycle Forum Star Warrior Forum KTM Duke 390 Forum
SV650 Forum BMW S1000RR Forum Honda Fury Forum Kawasaki Versys Forum Drag Racing Forum Ducati 899 Panigale Forum
Suzuki V-Strom BMW K1600 Triumph Forum Victory Forums Sportbikes BMW NineT Forum
Volusia Forum BMW F800 Forum Triumph 675 Forum MV Agusta Forum HD Street Forum Suzuki GW250 Forum
Yamaha Motorcycles Victory Gunner Forum Honda Vultus Forum HD LiveWire Forum Ninja H2 Forum Ducati Scrambler Forum Kawasaki Ninja 250SL Forum

Garage Plus vBulletin Plugins by Drive Thru Online, Inc.