Robinjo
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Posts posted by Robinjo
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Yep, I checked out the Hagon shock that came with my 1100W running gear and the same one is used for the Slingshots
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On 6/4/2018 at 5:56 PM, yyt said:
Yes I bored out the plungers to get full travel and it worked for me.
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How cool, one of my most favorite Katana's making a comeback! Allways loved the stance of the thing.
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Bike is running much better now!
While I had the fuel tank off I adjusted the valves (they were all exactly even, exhausts precisely in spec but intakes all exactly the same but 0.05 tighter than spec, adjusted them to 0.10-015 too. Balanced the carbs, checking with the tops on too, and adjusted the idle mixture per carb.
The bike now has a steady idle running on all four all the time so that's a change
still not quite right under 4000 rpm where it's most likely too lean? but above that it's soooo nice! Just wants to rev straight to redline and has great throttle response.
Thanks to all who helped!!!
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On 21-9-2017 at 9:02 AM, nlovien said:
I have a counter bore on the top side for the spigot thing to sit in - as above, it swallows the extra length - as I 1st rebuilt the carbs with the plunger the wrong way around I got the same symptoms as you - hence why the focus on this - is your 2 plunger picture one of the top and one of the bottom ? or two diffrent ones
The pic where I'm holding the two plungers is showing one top and one bottom side so there is no counter bore.
Since then I've fired up the lathe and made a 6 mm counterbore in the plungers, when installed there is a little bit of clearence between the rod and the actuator.
And when you put fuel in the carbs and twist the throttle they squirt!
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On 21-9-2017 at 3:04 AM, Cheeky4648 said:
My 29s have a raised area on one side for the spring location but have a 5 to 6 mm counterbore for the rod to sit in. On another note @Robinjo on the right hand carb as Sat on bike there are some numbers and letters (model code) I think. What does yours say?
My plungers are solid.
And my carbs have the codes:
27A
10
Like that, so one above the other, on the right side.
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On 19-9-2017 at 8:41 AM, nlovien said:
mark the throttle in 1/4 steps and look for the throttle position when the accel pump squirts - if it doesn't = something wrong
check you have the piston that the plunger rod push's ( the bit inside the float bowl socket) the right way around
that looks like Spa ?
Do yours look like this Nlovien?
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The top and the bottom of mine look like this, having a counterbore in the plunger would resolve the lack of space...
Are the plungers supposed to have a counterbore? That would explain a lot.
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Quote
Use nozzle slots to reposition facing in to engine.
Thanks for the tip, they are now adjusted correctly!
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3 hours ago, Jaydee said:
Don't assume that the plunger pins stay in this position. As soon as you lift the throttle , the pins move, along with the pistons in the float. The pistons should lift with the aid of their springs (and maybe a little fuel pressure from accelerator circuit, not 100% sure on that). Flatsides don't like to be wacked open suddenly at they will take a huge gulp of air. The whole idea of the accelerator circuit is to spray fuel in to this extra air when the throttle is snapped open. You can see the 2 plastic cams that the plunger pin rest against between carbs. They slap the pluggers when hard accelerating. When overhauling the carbs, make sure the plungers are cleaned properly and new o-rings on accelerator nozzles. Use nozzle slots to reposition facing in to engine.
I hope these pics clarify the situation a bit.
The plunger hole is 23 mm deep, the plunger is 14 mm long, when it bottoms out there is 7.5 mm left, the rod (at zero throttle) sticks out 6 mm, after 1.5 mm there is no more room tot travel for the plunger.
Does it only need 1.5 mm travel?
Is my plunger too long?
The carbs seem to be rebuild in the last couple of years so wrong parts could be possible.
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7 hours ago, nlovien said:
mark the throttle in 1/4 steps and look for the throttle position when the accel pump squirts - if it doesn't = something wrong
check you have the piston that the plunger rod push's ( the bit inside the float bowl socket) the right way around
that looks like Spa ?
See my previous reply about the plunger, and yes the pic was at Spa, love that place!
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3 hours ago, Jaydee said:
I have worked about 6 sets of vm29ss carbs this year alone! Yes perfectly normal to have 6-7mm of accelerator rod sticking out. As said, check that the 2 pistons in the floats move freely. Also push back the 4 brass accelerator nozzles and check their (2x1mm) o-rings. Every set I worked on had perished o-rings which would stop the nozzles spraying to their full capacity since the accelerator system is pressurised.
Oood to know the stickout is correct, now the problem is that the plunger in the floatbowl has a travel of about 7 or 8 mm from the top of the floatbowl so it's already near the end of it's travel. Maybe the plunger is not the correct one, will get a pic up tonight! Nozzle looked replaces not to long ago, other rubbers too
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I had the carbs apart completely so the chance I f*cked something up myself is allways an option.
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Allright, after formulating my "maybe problem" into a dirty question I hope some flatslide experts are persuaded to check out my topic
With the throttle closed the rod that is being actuated from the top of the carbs and pushes on the plunger in the float bowl is already sticking out 6 mm, total travel of the plunger is a little over 7 mm.
I ultrasonically cleaned my VM29SS carbs off my Slabby track bike because it started to developed a stumble coming out of a corner in the middle of the rpm range which got worse and worse. Everything under 4k rpm was allways crappy btw but on a track bike not really important but the big stumble was...
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Nice job Spamwood!
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Awesome job!
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Pj1
in Oil Cooled
Following
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On 22-12-2016 at 7:32 PM, bruteforce said:
Great build, thank for sharing
I can only agree.
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I fitted a GSX1100 ignition om my GS1000S a few tears ago, only thing was that the rotor was a bit too tall (quick bit of grinding and it was fixed) besides that no problem.
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Following, love Moto Martins.
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Wow that sucks!
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Following, some very nice struff here.
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Very tasty.
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Go Reinhoud!
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snapped chain problems
in Oil Cooled
Posted
I use the JTF512 on my Slabby trackbike.
http://www.jtsprockets.com/catalogue/sprocket/JTF512/