View Full Version : Crono help for classic RT
tweter
02-28-2009, 11:56 PM
I cant get my classic RT to crono under 430fps ive got the velocity adj all the way in and i tryed backing it out but that didnt help either, the only thing I can think of is to replace the counter wound springs? anyone have any other ideas...
ManInBlack
03-01-2009, 12:10 AM
Use an allen wrench to adjust the velocity thing counter-clockwise (out). also, make sure your tank is putting out decent pressure (800-1200psi).
secretweaponevan
03-01-2009, 12:15 AM
I cant get my classic RT to crono under 430fps ive got the velocity adj all the way in and i tryed backing it out but that didnt help either, the only thing I can think of is to replace the counter wound springs? anyone have any other ideas...
Sounds like your regulator isn't regulating. This is most likely due to a leaking reg valve seat or a problem with the regulator valve pin assembly (I think, but I learn something new every day). Inspect them for damage, nicks or anything else wonky.
tweter
03-01-2009, 12:37 AM
tried back the velocity adj all the way out to the oring seal and it only went to a higher fps..also i have a new reg piston and all new orings
what is your tank output pressure? bolt is installed? what spring is installed. Is everything lubed up(IE did you use some oil in your asa?
tweter
03-01-2009, 02:03 PM
tank pressure is 750ish all lubed up with gold cup stock bolt with a rebuild kit spring
tank pressure is 750ish all lubed up with gold cup stock bolt with a rebuild kit spring
I dont know what the stock bolt is, or the rebuild kit spring is. lvl7 with gold spring?
tweter
03-03-2009, 10:49 PM
I dont know what the stock bolt is, or the rebuild kit spring is. lvl7 with gold spring?
its the gold spring from the RT oring rebuild kit and yes I think its a lvl 7 if thats what came with the RT from the factory
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