Welcome to RedcatRampageForum! Are you a Redcat fan? If so you're in luck as you've have arrived to the biggest and best RedcatRampage RC community.
Come join our community and ask your questions, show off your Recat RCs and share your experience!
for best price try http://www.gizmomotors.comRsaint said:hi there anyone selling a walbo carb 990.
the pump bore on the 813 is inside the carb on the return side of the butterfly shaft . there is a c shaped machined out of this shaft-a steel ball rests in this-after the ball- the pump plunger with o ring-then the plunger return spring. yes, the pumped fuel discharges out the main. I suppose this way, Walbro was able to get away with just 1 check valve-the mains. The only visible diff eyeballing this carb- is the small steel plug on the carb body -where the cnc had to drill a passage, then plug up the hole. This carb still had a slight hitch -not really a bog- Stripped it down to bare bones, installed a notched butterfly valve- i have a bunch of these made up- with assorted styles of notches- bolted it up- fired up the cy29-problen sloved.RAMJET said:I don't understand where the 813 carb is supposed to have an accelerator pump ,looks the same as my other carbs. it does have a pop off type main jet where some have only a fixed drilled hole for a main jet , but accelerator pump ???my favorite carb is the 19a it has a 36 bore /choke shaft /pop off main jet/ the 813 has no choke shaft and has the smaller venturi 32 same as the 990 .if you are going to run a pipe and the motor has some displacement 29-30.5 go with the 19a carb .the 19a has a straight through bore,you simply cant get the carb any bigger with out changing the manifold,and it's one of the good carbs .the main difference in the carbs is the main jet ,if it has a simple drilled hole for the main jet the carb has no way to shut off the fuel when the air flow in the carb slows down (during deceleration) this causes a bog when working the throttle , the pop off style main jet delivers or shuts off fuel flow to the carb at a given air speed so the carb can switch effectively between hi & low speed without a bunch of unwanted raw fuel .this gives the engine a more snappy or punchy feel . Roger
I actually tried that and cannot get it to run. When I first installed it it was running too rich on both setting so I turned in both needles and back each out at 1&1/4 on the low 1&1/2 on the high to use as a starting point for tuning now it will not start at all and like a dummy i forgot to record the original settingsRCDAD said:1&1/4 on the low1&1/2 on the high
This should get you started.
Register and gain access to Discussions, Reviews, Tech Tips, How to Articles, and much more - on the largest Redcat Rampage RC community for Redcat RC enthusiasts that covers all aspects of the Redcat brand!
Register Today It's free! This box will disappear once registered!