XRAY - Model racing cars

I have tried a 13 tooth CB and that made no differance either.

It has no puase when going WOT from a stop it just slowly speeds up till about 5 sec then it just starts flying. There is no smoke coming out at take off only at the top end.

Im going to put all the needle settings back at factory and start over and see if that help. Do you think this is a tunning issue or is there something else i need to look at?

Thanks for the help so far.

Mine came with 2 LSN's for tune options. One has a blunt end and one has a sharp point end. If you have both of these you could try the other one and see how that helps.

Sounds more like a tune issue then anything. I just rerouted my fuel and pressure lines and had all kinds of issues so I had to shorten the pressure line back down to about 8-9 inches. Routing the pressure line pictured in the manual with the XB8 was a bad idea and way too long.

I found as previouslt mentioned that my B7 likes a rich LSN so one may think of gaining more low end by leaning the LSN but that wasnt the case. Be sure not to over lean it and as I recall I had to richen the LSN from stock settings a bit.

8.5 HSN
6.5 LSN

This is where I started at and had to lean the HSN and richen the LSN from that point in about 50-60 deg weather.

Brad,

Have you any end float on your C/B you'll need between 0.5mm to 1mm of float.

Tim