Throttle response

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duke1290
50cc
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Throttle response

Post by duke1290 » Tue Nov 28, 2017 6:40 am

Hi guys, very happy wityh my 2014 1290 Have done the Rotweiler intake, Ram tubes, Sas removal and tuned on dyno, fitted smaller front sprocket. I still find the bike super sensitive in lower rev range if riding on a bumpy road such a little respopnse on twist grip seems to make motor edgy.
Has anyone played with the Potentiometer or is there further adjustment within ECU settings?
Any help would be appreciated.

Volvor
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Re: Throttle response

Post by Volvor » Tue Nov 28, 2017 11:00 am

duke1290 wrote:Hi guys, very happy wityh my 2014 1290 Have done the Rotweiler intake, Ram tubes, Sas removal and tuned on dyno, fitted smaller front sprocket. I still find the bike super sensitive in lower rev range if riding on a bumpy road such a little respopnse on twist grip seems to make motor edgy.
Has anyone played with the Potentiometer or is there further adjustment within ECU settings?
Any help would be appreciated.
I live in Michigan, roads are horrible. I’ve found on rough roads that the bike is too sensitive in sport mode. I use the street setting and it’s much better. If you’re using sport mode and a smaller front sprocket, I would imagine the throttle is very”touchy”.


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abc
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Re: Throttle response

Post by abc » Thu Nov 30, 2017 10:05 am

If you have any backlash in the twist grip on the throttle it can be a real pain and cause exactly what you describe.
Taking the throttle apart and removing any backlash fixes this issue.
I can ride as low as 2000 rpm in sports mode and still have good throttle control.
The standard production tolerances on the throttle assembly is pretty bad.

Savman
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Re: Throttle response

Post by Savman » Sat Dec 02, 2017 6:45 am

Hi ABC, how are you taking out the backlash from the throttle, being rbw there is no adjustment on the twistgrip.

abc
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Re: Throttle response

Post by abc » Sun Dec 03, 2017 2:23 am

you are correct - there is no adjustment, you have to take the throttle switch block apart and build up the drive tangs with a very small amount of epoxy because there is too much clearance there. Do it to both drive tangs and make sure you do it to the correct edges so you don't change your idle.
I posted something on another forum but I can't find the link.
This is the only option available to fix the issue, I went to the trouble of figuring out a fix because I was very unhappy with the backlash in the twist grip assembly and basically couldn't ride around town in sports mode without the bike being a pig - this fixed everything and now everything is very precise - I like this because Im a big fan of accurate throttle control.
I think a few guys have done the mod and have reported back that is changes the ride ability in sports mode.
Good luck

chuckyboy
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Re: Throttle response

Post by chuckyboy » Tue Dec 05, 2017 3:50 am

Thanks for the information abc

I also suffer from this (excessive) throttle play on 1290 SDR after I installed Rott air intake, SAS removal, PCV and Cat delete and Exhasust mods. Turning TC off seems to improve things though.

Now I ride with TC off all the time.

duke1290
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Re: Throttle response

Post by duke1290 » Thu Dec 07, 2017 4:43 am

Many thanks for the responses. I will endeavour over xmas to get rid of back lash and will try other drive modes. More fun to ride in the upper rev range but the law her is very responsive as well!

steve59
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Re: Throttle response

Post by steve59 » Mon Dec 11, 2017 11:13 pm

I bought the 16t for my 2015 SDR and after the cat delete and akra map I decided the first 3 gears were touchey enough and never installed it, it's hanging on a hook in my garage.
Enjoy

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