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Message started by Eegore on 05/05/17 at 06:58:40

Title: Throttle increase when turning left
Post by Eegore on 05/05/17 at 06:58:40

I'm assuming that there's a pinch in the throttle cable or something similar since now when I turn left I have an increase in throttle.

I've had drag bars on so there's extra cable, but ever since my bike was returned I've noticed a speed increase only when turning the bars left.

Should I just get a new cable/grip assembly and cut it to size or is there a recommended method for making adjustments?

Title: Re: Throttle increase when turning left
Post by Tocsik on 05/05/17 at 07:14:27

"...ever since my bike was returned..."
Returned from where/whom? If a shop had it, I would take it back to them.
Otherwise, I would pull the tank, check the length of the cable and both ends for anything that looks a little "off". Post a couple pics and we can compare to ours to see if we can spot any differences.
If the throttle is increase when the bars are turned, you definitely have some tension on the cable somewhere; especially if this is new.

Title: Re: Throttle increase when turning left
Post by justin_o_guy2 on 05/05/17 at 07:26:54

Once upon a time it worked okay.
Since you " got it back " it acts weird.
So, you're thinking about replacing parts.
I'm guessing someone had the tank off.
Whoever Had the bike when it changed needs to undo whatever they did to the cable routing. Unless you're holding the grip with your wrist high and pulling in a left turn.

At idle, swing the bars left and right.
You might be able to solve it in minutes.

Title: Re: Throttle increase when turning left
Post by Gary_in_NJ on 05/05/17 at 07:50:07

The throttle cable is either:

- too short, or
- mis-routed

The second one is easy to fix and is free, the first requires money and time to measure the correct length.

Custom applications require custom solutions. My throttle cable was too long by about 5 inches - so I re-routed it, came in from the other side of the carb and wrapped it around the carb. Cost was free, but it took time to think about it.

Title: Re: Throttle increase when turning left
Post by justin_o_guy2 on 05/05/17 at 08:21:50

Unless someone changed the cable, it's the same length as it was, you know, when it Wasn't a problem. Sounds suspiciously like a man made problem.

Search

motorcycle revs up in a turn

You are not alone. It's not a
Gee Whiz, I need a Professional to figure this out
Level problem.

Title: Re: Throttle increase when turning left
Post by Eegore on 05/05/17 at 08:22:10

Yeah a shop had it, I didn't have the issue before so its probably pinched somewhere creating tension.

It happens even if I have my hand off the throttle just turning the bars left while in neutral. I will take off the tank and trail the cable and see if I can identify a tight spot. If not I can purchase a new assembly and send it in to be installed.

Rerouting the cable around the carb is good advice, I will see if I can apply that here. I'm not sure if it was cut too short when the drag bars were put on but I will see.

Title: Re: Throttle increase when turning left
Post by justin_o_guy2 on 05/05/17 at 08:31:57

If that cable worked before, then buying a new one won't fix it unless someone screwed it up. I've seen that problem. It's never been the cable itself. Routing was the problem.
Okay, a shop had it.
What did they do to it?
Did they pull the tank?
Before you pull it, eyeball everything and see if you can adjust the cable position to solve the problem.
Before you pull it, have a place prepared to set it down. The speedometer cable will get bent too hard unless it's sitting on something that lets the cable hang a foot or so. A safe, nobody will knock it over spot matters.

Title: Re: Throttle increase when turning left
Post by Tocsik on 05/05/17 at 08:38:10

56494F4855526353635B49450E3C0 wrote:

...
...Before you pull it, eyeball everything and see if you can adjust the cable position to solve the problem.
Before you pull it, have a place prepared to set it down. The speedometer cable will get bent too hard unless it's sitting on something that lets the cable hang a foot or so. A safe, nobody will knock it over spot matters.

Sound advice here. You may be able to sort it out without the need to pull the tank. If you pull the tank, take it all the way off and, as JOG said, have a proper place ready to set it down. Don't scrimp on extra time. I was replacing a breather hose and didn't want to undo the speedo cable so I had the front of the tank propped up with a piece of 2X4 to do the repair. I also didn't want to back my truck out of the garage to get to my cheap-o homemade motorcycle lift so I left the bike on the sidestand. Those "shortcuts" led to the tank falling off the 2X4 prop and getting several scrapes, dings and dents. Learn from my bad decision and do it right.

Title: Re: Throttle increase when turning left
Post by batman on 05/05/17 at 10:03:15

If removing the tank,be careful not to lose the rubber O-ring from the speedometer cable or when replaceing don't drop it under the starter,either will ruin your day.

Title: Re: Throttle increase when turning left
Post by Ruttly on 05/05/17 at 10:18:40

It's a natural born flat tracker !

Title: Re: Throttle increase when turning left
Post by ohiomoto on 05/05/17 at 11:10:26

Before you pull the tank, make sure there is a bit of free play at the throttle. If not you'll have this problem even if the cable it routed properly. There is an adjuster with two 10mm nuts on it.

Title: Re: Throttle increase when turning left
Post by Eegore on 05/05/17 at 11:12:04

Ive had the tank off a number of times, never thought about the speedometer o-ring, its probably long gone by now.

I put the bike on its side coming back from the shop so I might have done the damage to the cable myself, who knows. I will just do as suggested and try to look it over with the tank off before ordering parts and sending it back in.

Title: Re: Throttle increase when turning left
Post by justin_o_guy2 on 05/05/17 at 11:19:24

I put the bike on its side coming back from the shop so I might have done the damage to the cable myself, who knows.

Probably something to have shared earlier.

Title: Re: Throttle increase when turning left
Post by Ruttly on 05/05/17 at 15:11:34

Ah , Today I ah

Ah , I ah

Title: Re: Throttle increase when turning left
Post by Eegore on 05/05/17 at 20:17:47

Resolved the issue by re-routing the cable. It had been pulled under what I assume is some sort of fork-lock key hole. I was able to snap it over the lock and zip-tie it against another cable and it seems to have gone away.

Now if I can just get rid of the belt squeal I might actually ride the thing somewhere.

Title: Re: Throttle increase when turning left
Post by Eegore on 05/05/17 at 20:19:08

Title: Re: Throttle increase when turning left
Post by stewmills on 05/05/17 at 21:29:07

A tight belt can squeal. You should be able to twist the belt 90 degrees with two fingers with light to moderate pressure. If you can't, it is too tight.

Title: Re: Throttle increase when turning left
Post by Ruttly on 05/05/17 at 21:30:57

Comedy my friend Comedy , Welcome to the best motorcycle forum there is.
Check the tech section "belt squeal" I'm sure it's a easy fix. Probably belt alignment. Pulling itself to one side or the other.

Title: Re: Throttle increase when turning left
Post by Gary_in_NJ on 05/06/17 at 09:16:07

7757555D4057320 wrote:
Now if I can just get rid of the belt squeal I might actually ride the thing somewhere.

Belt squeal can be permanently eliminated with a chain conversion :)

Check the alignment of your rear tire. The rear pulley must be in-line with the front.

Title: Re: Throttle increase when turning left
Post by Eegore on 05/06/17 at 09:39:07

Yeah Im not sure its the belt, seems like after 3rd gear its much louder and will make noise even when throttle isn't applied. I had another thread on the issue but at the time it wasn't screaming when coasting with the clutch in.

I need to take a video maybe.

Title: Re: Throttle increase when turning left
Post by justin_o_guy2 on 05/06/17 at 11:26:05

So easy to prove.
Gulf canning wax is available at grocery stores, with canning supplies. Rub some on the belt. Squeak stops, f ound it..

Title: Re: Throttle increase when turning left
Post by TheNaughtyLemur on 05/19/17 at 16:32:10

So after removing the carb and rejetting I seem to have the same problem. I've taken the tank off a couple times to see if there was anything amiss, but I haven't noticed anything with the routing. Anything that you guys see?

Title: Re: Throttle increase when turning left
Post by Eegore on 05/19/17 at 20:22:43

Mine had dropped under the fork lock but it doesn't look like yours did.

It looks like the cable may be able to move a bit up front. Is it draping over the fork lock if you turn right then having tension as you turn left again?

Not sure what else causes this, besides a crimp in the line.

Title: Re: Throttle increase when turning left
Post by TheNaughtyLemur on 05/19/17 at 20:39:12

It definitely moves when I turn the bike from side to side.

Title: Re: Throttle increase when turning left
Post by batman on 05/19/17 at 21:13:54

the shortest distance between two points is a straight line. I can't tell from the picture is the cable running over the stud for the right side front tank mount? If that's what I'm seeing I'd move it so it runs under the mount.