Author Topic: Occasional Renegade Throttle  (Read 376 times)

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Offline frenche

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Occasional Renegade Throttle
« on: August 27, 2018, 11:44:02 pm »
1999 C-10
Flew to Mass.
Bought this bike.
Rode it home to Texas.

Bike has nice (maybe Audiovox (?)) Cruise Control.
Sometimes at speed, sometimes under acceleration,
Sometimes with cruise control on, sometimes with cruise control off,
the throttle will hang open somewhere along the line and
the engine speed fails to slow down! <--this is occasional & sure does _not_ happen every time.
Still, this is a very unsafe fault & needs fixing.
Previous owner installed Motion Pro push cable & Motion Pro pull cable, as well as fancy sheaths for both cables.
So, I was wondering if this fault could be caused by an obstruction, like a rock or maybe rubber puck from gas tank mounts.
Where to look first?
What could cause this sticking throttle fault?

Thanks for your help,
frenche

Offline Steve in Sunny Fla

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Re: Occasional Renegade Throttle
« Reply #1 on: August 27, 2018, 11:49:13 pm »
you need to ask Joe. He built the bike and I'm sure if anyone can figure it out it's him. and you got a great deal on that bike, too!  :beerchug: Steve

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Offline Bob_C_CT

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Re: Occasional Renegade Throttle
« Reply #2 on: August 28, 2018, 11:53:06 am »
Do you have play in the throttle, a little freeplay is needed between the pull and push cables or they will bind. You should be able to twist the throttle a bit and feel the freeplay.
Good luck on a nice bike.
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Online SteveJ.

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Re: Occasional Renegade Throttle
« Reply #3 on: August 28, 2018, 01:25:45 pm »
When looking for the hang up pay particular attention to the cruise control cable. That can be problematic near the thermostat but don't limit your observations to just that. I wound up getting a piece of plastic water tubing, the stiff milky white kind, to run the cable through near the thermostat. Just cut it diagonally lengthwise to spiral it onto the cable and zip tie to hold it in place.

I'm pretty sure it was Mr. McFly that came up with that fix.

Good luck.

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Offline frenche

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Re: Occasional Renegade Throttle
« Reply #4 on: August 29, 2018, 02:09:26 pm »
Bob_C_CT,
I am thinking the freeplay may be too little. I will check that first.
Thanks, Bob_C_CT.
frenche
« Last Edit: August 29, 2018, 02:14:20 pm by frenche »

Offline frenche

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Re: Occasional Renegade Throttle
« Reply #5 on: August 29, 2018, 02:13:36 pm »
SteveJ, said, "
When looking for the hang up pay particular attention to the cruise control cable. That can be problematic near the thermostat but don't limit your observations to just that."
I had suspected interference from cruise control linkage, but have never seen that kind of linkage & did not know where to look.
I will check that out.
Thanks, SteveJ!
frenche

Offline Mcfly

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Re: Occasional Renegade Throttle
« Reply #6 on: September 03, 2018, 01:28:07 pm »
SteveJ, said, "
When looking for the hang up pay particular attention to the cruise control cable. That can be problematic near the thermostat but don't limit your observations to just that."
I had suspected interference from cruise control linkage, but have never seen that kind of linkage & did not know where to look.
I will check that out.
Thanks, SteveJ!
frenche

Best place to start looking is at the chain that connects the throttle linkage to the cruise control cable itself.
There's sharp metal corners the chain can hang up on.

Also look at how the cable/chain goes over the t-stat housing. 

If the cruise control is the reason, then those are good places to start looking.
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Offline turbojoe78_MA

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Re: Occasional Renegade Throttle
« Reply #7 on: September 07, 2018, 02:10:44 pm »
Jeff,  I believe I used a screen door roller to guide the cruise control cable over the thermostat area.  Remove the tank and check out how the cruise control cable reacts when you open and close the throttle, see if it looks like it's getting caught up in the carb linkage somewhere.

The problem won't be with the throttle cables. I bought them from Murph and put them on when I built the top end.

Call me if you need to.

Joe C

P.S.  how was your ride home?
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Offline frenche

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Re: Occasional Renegade Throttle
« Reply #8 on: September 08, 2018, 02:47:40 am »
Joe, that ride home was all new stuff to me.
I had never seen the countryside in Massachusetts or New York.
They were so beautiful! Most of the way, some wind in fast and usually
very heavy traffic 75-90mph. Not what I was really ready for. A few times in the
afternoon, traffic and wind dropped to almost nothing. Then, I got the thrill of
motorcycling through lush greenery with time to enjoy the ride.
        And, Joe, this C- 10 is everything I ever wanted in a motorcycle!
It runs really strong. You did excellent work putting it together. And, I am also
grateful to Steve in Sunny Florida for several big helps along the power curve.
This bike is truly amazing. I am thrilled! Much gratitude & appreciation!
frenche