barrywhite 282 Posted September 8, 2016 Report Share Posted September 8, 2016 I have just got a rh91, 93 air rifle ..the problem at present or first problem found is . The probe that pushes the pellet down the barrel is to short or appears to be . Using the bolt action there is an o ring that does not go into the barrel and seal the breach when loading and shooting . So i took the bolt out of the gun the bot has three components its a handle, a body , and a probe . there is an oring and something holding the probe and body together. I am not sure what .It could be to a very fine allen screws or a very fine cross pin .Fine allen screws would make some sents this would mean the probe pushed into the body over time loading pellets . Or what i think is the real problem the gun left the factory with this problem of the probe being to short . any information would help . Quote Link to post
barrywhite 282 Posted September 10, 2016 Author Report Share Posted September 10, 2016 OK . I have fixed the bolt problem taken the gun apart and cleaned it with new grease . The gun is shooting 10.5 ftlbs so all is good . the trigger is a bit heavy . does any one know about the trigger adjustment on this gun . there is a big screw saying turn me right near the trigger but I will wait a bit . Quote Link to post
johnbaz 363 Posted September 16, 2016 Report Share Posted September 16, 2016 Sorry I can't help with trigger adjustment but from what i've read about these guns, You've acquired a heavy solid lump of engineering excellence!! John Quote Link to post
barrywhite 282 Posted September 17, 2016 Author Report Share Posted September 17, 2016 Sorry I can't help with trigger adjustment but from what i've read about these guns, You've acquired a heavy solid lump of engineering excellence!! John I am not to sure of that . the gun was shooting all over the place . on close inspection I found there was a bur or two or three in the barrel at the point where the pellet starts to engage the rifling . I had to make a tool to get in the barrel and remove them . also the crown was one big round bur .I fixed that with a ball bearing and lapping paste .It could still do with a bit more work but for now thats it . the gun groups ok with the odd flyer the start of the rifling is still a little rough but the pellets come out looking ok . To shoot the gun accurately the heavy trigger is a problem a tx200 or 97k ..S recoil is less of a problem than the heavy trigger . An interesting gun , now fun to shoot , but if the gun I have is common I can see why there aren,t many about . The final inspection of the gun at the factory must have been nonexistent . 1 Quote Link to post
johnbaz 363 Posted September 17, 2016 Report Share Posted September 17, 2016 Sorry I can't help with trigger adjustment but from what i've read about these guns, You've acquired a heavy solid lump of engineering excellence!! John I am not to sure of that . the gun was shooting all over the place . on close inspection I found there was a bur or two or three in the barrel at the point where the pellet starts to engage the rifling . I had to make a tool to get in the barrel and remove them . also the crown was one big round bur .I fixed that with a ball bearing and lapping paste .It could still do with a bit more work but for now thats it . the gun groups ok with the odd flyer the start of the rifling is still a little rough but the pellets come out looking ok . To shoot the gun accurately the heavy trigger is a problem a tx200 or 97k ..S recoil is less of a problem than the heavy trigger . An interesting gun , now fun to shoot , but if the gun I have is common I can see why there aren,t many about . The final inspection of the gun at the factory must have been nonexistent . Crikey!! Am I thinking of the right gun? The one with the chain that pulls the piston back when the underlever is pulled? From memory I think it has twin opposing pistons (The rear one being a dummy just to cancel the forward movement of the front piston) I think the gun was designed by Roy Hutchinson, I may have been under the wrong impression for many years Cheers, John Quote Link to post
barrywhite 282 Posted September 17, 2016 Author Report Share Posted September 17, 2016 yes..... . looking at the gun one spring is a lot more powerful than the other . The gun may just work with one spring. the one in the front piston but the chain would do a lot of work maybe to much . As the front piston moves when the gun is shot the chain pulls the rear piston forward .The chain is rapped round a pulley in the front of the air cylinder .The pistons are well made one has a slot in it that lets the air shoot upwards into the barrel . Dispite the problems I still like the gun unlike a once owned stealth . There is still one problem left but I will live with that the latch system for the leaver, it latches fine but on closing there is way to much bite and the latch will not just close you have to open the latch to lock it in place . Quote Link to post
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.