Technical Discussion Topics related to Technical Issues

Another TPS question

Old 03-14-2006, 07:07 PM
  #1  
Member
Squid
Thread Starter
 
YAMAROCKET630's Avatar
 
Join Date: Feb 2006
Location: Burton, Michigan
Posts: 62
YAMAROCKET630
Another TPS question

So far I absolutlely love the Superchicken, but I have one concern. I find slow speed turns (i.e. intersections) a little upsetting to the chassis because of the abrupt on/off throttle transistions. It's probably just due to my last bike being a (built) FZR600 that didn't make any real torque below 8000 RPM.

My question is, will adjusting the TPS to 500ohm at closed throttle help the transition from closed throttle to open throttle be smoother? Mine is at 891ohms now. I have adjusted the throttle free play to where I am comfortable with it, but it still is not as smooth as I like. Have I just lost that much fine throttle control after not riding for the last 6 years? Should I just suck it up and get used to it? Is it a V-twin thing?
YAMAROCKET630 is offline  
Old 03-14-2006, 07:24 PM
  #2  
Senior Member
Back Marker
 
cb21983's Avatar
 
Join Date: Jun 2005
Location: Phoenix
Posts: 152
cb21983
Adjusting the TPS is going to help with low RPM throttle response but I don't know if it will be a night and day difference. It will definitely help.
cb21983 is offline  
Old 03-14-2006, 07:30 PM
  #3  
Senior Member
MotoGP
 
mikstr's Avatar
 
Join Date: Apr 2005
Location: Montreal
Posts: 5,558
mikstr is on a distinguished road
Re: Another TPS question

Welcome to the wonderful world of VTRs! In regards to your situation, perhaps you should begin by having the carbs synched (for smoother response).

I tried the VTR adjustment last summer for all of two weeks and it did indeed dull the engine response on my VTR, so much so in fact (with no discernible benefit) that I un-did the adjustment and ended up going back to the stock (high) setting (do a search and you can find what those were). I realize that others' experience may be different but I can only speak for myself.

I would recommend that you be patient and take time to get used to the engine response. You will soon come to love the spirited jump you get every time you open the throttle.

Good luck

Mikstr
mikstr is offline  
Old 03-14-2006, 07:56 PM
  #4  
Senior Member
SuperSport
 
Loco's Avatar
 
Join Date: Nov 2005
Posts: 547
Loco
Hey Yamarocket, whaaat's happening? Yeah, we're putting new cover sheets on all our TPS reports BEFORE they go out now. Yeah, did you get a copy of that memo? Great, thanks Yamarocket. I'll just get you another copy of that memo. Thanks.
Loco is offline  
Old 03-14-2006, 08:19 PM
  #5  
Senior Member
MotoGP
 
superhawk22's Avatar
 
Join Date: Jan 2005
Location: Gainesville FLA.
Posts: 3,844
superhawk22 is an unknown quantity at this point
Re: Another TPS question

Originally Posted by YAMAROCKET630";p=&quot View Post
It's probably just due to my last bike being a (built) FZR600 that didn't make any real torque below 8000 RPM. Have I just lost that much fine throttle control after not riding for the last 6 years? Should I just suck it up and get used to it? Is it a V-twin thing?
Yes it probably has something to do with that. Yes you've probably lost a little of your touch. Yes suck it up and get used to it and yes it's a v twin thing and soon you'll understand. It just takes some time in the saddle, I moved from a Katana 600 and experienced the same thing. Give it some time you will get smoother with it. But if you want to try the mod see how you like it and go from there but I don't think it's "necessary".
superhawk22 is offline  
Old 03-15-2006, 03:38 AM
  #6  
Senior Member
SuperSport
 
shayne's Avatar
 
Join Date: Dec 2005
Location: Sunshine Coast, Australia
Posts: 963
shayne is on a distinguished road
Re: Another TPS question

Hey Loco, I have seen you mention this update stuff on th TPS before.

What is it you are referring to?
shayne is offline  
Old 03-15-2006, 08:23 AM
  #7  
Senior Member
SuperSport
 
Loco's Avatar
 
Join Date: Nov 2005
Posts: 547
Loco
This oughta help...

http://www.imdb.com/Title?0151804
Loco is offline  
Old 03-15-2006, 01:47 PM
  #8  
Senior Member
SuperSport
 
shayne's Avatar
 
Join Date: Dec 2005
Location: Sunshine Coast, Australia
Posts: 963
shayne is on a distinguished road
Re: Another TPS question

Right, Ok then, that has clarified things.

It is clear I have no idea what is going on!

Is there some new information on the TPS mod, or is the link to a movie review just a joke that has gone right over my head!

If it's a joke it has got me stumped!
shayne is offline  
Old 03-15-2006, 02:34 PM
  #9  
Senior Member
SuperSport
 
Join Date: Mar 2005
Location: Laurel, MD
Posts: 758
jschmidt
Pick a lower gear. The TPS mod is bogus.
jschmidt is offline  
Old 03-15-2006, 04:56 PM
  #10  
Senior Member
SuperSport
 
thetophatflash's Avatar
 
Join Date: Jan 2005
Location: Nooksack WA
Posts: 831
thetophatflash
Re: Another TPS question

Bogus is as bogus does. Who tunes your bike? Does the term bitmap ring a bell?
thetophatflash is offline  
Old 03-15-2006, 05:15 PM
  #11  
Senior Member
SuperSport
 
Join Date: Mar 2005
Location: Laurel, MD
Posts: 758
jschmidt
Re: Another TPS question

Originally Posted by thetophatflash";p=&quot View Post
Bogus is as bogus does. Who tunes your bike? Does the term bitmap ring a bell?
Huh? I tune my bike. No.
jschmidt is offline  
Old 03-15-2006, 05:26 PM
  #12  
Senior Member
SuperSport
 
thetophatflash's Avatar
 
Join Date: Jan 2005
Location: Nooksack WA
Posts: 831
thetophatflash
Originally Posted by jschmidt
Originally Posted by thetophatflash";p=&quot View Post
Bogus is as bogus does. Who tunes your bike? Does the term bitmap ring a bell?
Huh? I tune my bike. No.
the bitmap is the computer's preset digital timing based on throttle position(TPS) and the crank angle. As those two things change independent of each other the bitmap chooses the predetermined timing. More sophisticated systems allow you to change the bitmap via a PC or by changing an eprom.
thetophatflash is offline  
Old 03-15-2006, 05:34 PM
  #13  
Senior Member
SuperSport
 
Join Date: Mar 2005
Location: Laurel, MD
Posts: 758
jschmidt
Interesting description. Are you sure you're not thinking of the "fuel map" or "advance curve" on an FI bike?

On this bike the TPS only controls when the timing advance begins. It has a simple triggering function. A single, simple advance is predetermined. The Superhawk TPS has no other function than to pull the trigger on timing advance.
jschmidt is offline  
Old 03-15-2006, 05:51 PM
  #14  
Senior Member
SuperSport
 
thetophatflash's Avatar
 
Join Date: Jan 2005
Location: Nooksack WA
Posts: 831
thetophatflash
Re: Another TPS question

It's the same principle. The Hawk is not fuel injected, but it is in effect using the ignition portion of a digitized system to finely control timing.
thetophatflash is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Renderw
Technical Discussion
21
10-02-2012 04:52 PM
geekonamotorcycle
Technical Discussion
21
05-24-2011 01:43 PM
ktc
Technical Discussion
3
05-06-2011 08:13 AM
mikstr
Modifications - Performance
20
01-17-2011 01:34 AM
Zedicus
Modifications - Performance
5
03-12-2007 11:09 AM


Thread Tools
Search this Thread
Quick Reply: Another TPS question


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.