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hexbar linkage question

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cesiumfrog Seriously Crusin Dubber

161 posts · joined Apr 2005 ·

#874481
hey fellas, i have the latest model cb hexbar kit, steel bar etc.dual drla 40s.
after synchronising carbs and linkage, at full throttle travel, there is a gap on one side between stops on one carb of 3-4 mm.
the car seems to run fine but is a little concerning as this implies that one carb is leading as the revs increase.
everything looks straight and even otherwise and no play in linkages.
at idle both carbs read the same on the snail gauge.
any comments?

vwo60 Veteran Volks Folk

2,036 posts · joined Feb 2007 ·

#874485
check and make sure that the actuation arms are the same distance along the bar and the linkage is the same angle looking from behind.

cesiumfrog Seriously Crusin Dubber

161 posts · joined Apr 2005 ·

#874493
yeah...done. thanks.
however if i slide them both along the same way till they have extreme angles i can make them idle the same and reach the stops togrther?

Bizarre Moderator The artist formerly known as blue74l

12,789 posts · joined Aug 2002 ·

#874496
mmm.............. thought they should be verticle??
Futue te ipsum!!!

cesiumfrog Seriously Crusin Dubber

161 posts · joined Apr 2005 ·

#874519
yep, vertical is correct biz....just not working properly that way.
i should stress it is only 3-4mm out at end of travel on one side, but...

Bizarre Moderator The artist formerly known as blue74l

12,789 posts · joined Aug 2002 ·

#874563
Do you have any "slop" in the ball joints / hex bar??

I had problems with mine - one of the reasons I changed to CSP
Futue te ipsum!!!

matberry Moderator Go hard or go home

8,114 posts · joined Mar 2006 ·

#874571
It's the ratio that can change if any lever arms are different in length. This will normally happen if the adj rods aren't the same angles relative to the arms or an arm has a slight bend thus altering the length. Take a pic of your setup.
Matt Berry Motorsports...air cooled advice, repairs and mods Ph 0408 704 662
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Bizarre Moderator The artist formerly known as blue74l

12,789 posts · joined Aug 2002 ·

#874754
mmmmmmm........... the right arm seems to be pointing up more??
Would mean the arm is longer??

Is it the right one that stops first??
Futue te ipsum!!!

cesiumfrog Seriously Crusin Dubber

161 posts · joined Apr 2005 ·

#874920
yeah..right one hits stop before left.
it does look higher in the pic but i think it's just the pic.
i'm going to try pulling the linkages to bits and refitting with the bar turned 180deg. or end for end just to see if anything changes.
thanks bizarre,mat