Subject: RE: Fine Tuning Brakes and Carbs - Long
Author: Greg Bender
Date: May 6, 2005, 8:22 PM
Post ID: 1718825619
Hi Keith,
With the Superpractic B throttle, what you have is a single cable going
to the spliter and then one cable going to each carb. If memory serves,
the only adjustment you can make is at the top of each carb where you
have already identified the adjustment mechanism.
I'd start off my adjusting the slack out until it is within spec and
close on both sides. Then, I'd move to balancing the sliders. There are
a number of techniques that can be used to do this. Some prefer mercury
sticks, some prefer listening for clicks, some prefer feeling with a
finger and a thumb. Personally, I'm quite fond of the straight 6" wires
under the sliders method.
At any rate, you do want to have only about 1/16" slack in the cable -
as Mark mentioned. Too much slack and you run the risk - among other
things - of the cable sheath getting caught up on the outside of the
throttle and the inner cable rubbing against sharp edges of the throttle
and breaking. Don't ask me how I know this :>
If things are getting caught up, you can always clean and lube the
throttle as well as the two-way under the gas tank...plus all the other
recommendations made on this list a few days ago.
Keith Ruff wrote:
| Got a question on throttle cables (wasn't that a hot topic recently also?). I have a Superpratic B throttle. Mark mentioned that 1/16" slack is necessary for the cable. I've got way more slack than that, probably 1/4-1/2" movement of the throttle grip before the cable grabs. I was hoping to be able to adjust this out at the handlebar, but I hear that I have to adjust this out under the tank, is that correct? How is that adjustment made, is it simple like the brake cables? I synched my carbs last weekend but noticed on the carb stix that the mercury on the right cylinder bar would move up before the left side when blipping the throttle, but when the left side kicked in, they would move up simulataneously (lower mercury level on the left side though) and drop back down together and become equal at idle. I'm figuring my left cylinder cable is tighter than the right, so I want to try to adjust the cables to get the levels more equal during acceleration. I'm guessing this is done where the cable goes into the carb? I saw the nut on the carb where the cable goes in and am assuming that this is the adjustment nut, correct? |
Regards,
Greg Bender
1971 Ambassador
2000 Quota
http://www.thisoldtractor.com/gtbender
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