Does the choke for the 45mm mount somewhere or just kinda lay there?Anyway to adjust it?Mine doesn't want to raise the rpm's up enough to idle when cold.Also is there a idle adjust on the carb?Anyone change the jets on there RW st.1 setup at normal altitude?

 

Since the HRS series carb was designed for Harley-Davidson motor cycles, the choke and bracket were set up for those bikes as well. I zip tied the bracket to the frame to prevent it from dangling.

The choke cable does not seat in the carb very well and may not be working properly for you if the cable is not properly seated. I have also noticed that once the choke is on, if I push the throttle, the choke will "come off". This is handy to prevent riding with the choke on, but can make it a pain to warm up some times. I'm not sure if this is designed to work that way, but I don't mind it.

I have found that I had to change the set up signifacanly, but then again, I'm running alot more motor than stock. I found that I had to lean the main a great deal[137.5-140] and install a richer needle set with the clip all the way down[needle all the way up]. Befor changing the needle, a richer main[145] gave me more low and mid as well a smoother overall power curve, but cost me around 3 peak HP. I'm not sure if this info will help in your tuning at all, but I thought I'd share what I found out on the dyno about the HRS carb on my Team Pami motor

 

i drilled a small hole in the flat part of the frame and bolted in on, works great. i'll be putting a 145 main jet in mine tonight, running rich now that i took the filter off the carb and put the k&n in the airbox.

 

Knutz anyway to position the cable better?And Jimmie, is the 145 the main jet that comes in the carb?I also have the k and n in the box.Maybe my altitude is diff. than indiana?

 

The easiest way to help ensure the cable stays seated is to mount it in a place that pushes it into the carb. If there is any tention on the cable, it unseats easily. My cable loops up and the bracket is zip tied to the frame. With the angle of the tube that it is ties to, any movement will only push it into the carb even more.