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Post by pistanbroke on Dec 7, 2014 21:49:55 GMT 1
Hi folks, just started stripping my Hybrid to paint the frame and tidy her up , noticed she is a non tie bar 4lo frame, Can tie bars be retro fitted? anyone done it? is it worth the bother?, am I correct in thinking if I weld a mounting to the front of the frame I can bolt em on? Most of all is it worth doing ? ive never owned a non tie bar model so don't know if its the cause of serious bother, thanks in advance lads !!
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Post by marsbar350 on Dec 7, 2014 22:41:42 GMT 1
it was only for the crap standard pipes cracking
if you fitting decent upgraded pipes with separate spigots it would be a waste of time
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Post by soccersmyth on Dec 7, 2014 22:46:49 GMT 1
As Andy said about not necessarily needing them,
but it can be done.
Just get a suitable piece of metal,
Tac it on with the crankcase still on and fit the tie bar to the casing to allow it to line up to where you need to be on the frame.
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Post by pistanbroke on Dec 8, 2014 0:08:27 GMT 1
Thanks lads, fitting JL retro pipes so will give it a miss.
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Post by arrow on Dec 8, 2014 0:21:47 GMT 1
Just out of interest, on the non tie bar version does the lower case still have the threaded holes to accept the tie bar bolts?
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Post by steven on Dec 8, 2014 1:23:39 GMT 1
Hi, No, the earlier non tie bar crank cases do not have the thread in them to accept the bolts for the tie bars. Someone posted a pic on here a few months back of a frame with a big dod of flat bar welded between the front engine mounts to accept the tie bars, crude but effective I suppose. I believe the "approved" method is to get a complete front engine mount from a scrap tie bar frame and then cut out the old mount and weld in the new type. I have one to do, got the new mount etc , just not got round to it yet,,,,, but it is on my " to do list"  ? Steven. |
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Post by arrow on Dec 8, 2014 1:25:29 GMT 1
Thanks. To my original question, thought not.
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Post by JonW on Dec 8, 2014 1:41:54 GMT 1
Hmm, I think they are needed... I say that as Aaronmvrider has cracked his mounts on his +4 350 YPVS with JL pipes. Now you might argue that there are other factors, like possible worn front/rear mounts and more power etc but would Yamaha really have fixed this issue with welding tabs rather than just the pipe fix back in the day? I know the ypvs frame is different, but I still think you should fit them, its not that hard... and I would brace weld the mounts to the side rails as well as the cross member to get a very strong mount. I intend to do this on my LC421 frame to beef up this area as while everything is allowed to move with the metalastic bushes i still think the engine moves around quite a bit, especially if you dont have all new bushes.
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Post by pistanbroke on Dec 8, 2014 23:11:50 GMT 1
Just out of interest, on the non tie bar version does the lower case still have the threaded holes to accept the tie bar bolts? The motor in mine does have the threaded holes but is not original to the frame  , my good mate is a welding lecturer in the local college and has had a look and reckons could easily knock up some mounts and weld em on for me, think I will leave it for now, if its a problem we can sort that next winter |
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Post by marsbar350 on Dec 8, 2014 23:15:42 GMT 1
just put 4 vibration washers on the engine mounts  pissing about welding tie bars on for bodgers |
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Post by pistanbroke on Dec 8, 2014 23:24:48 GMT 1
Hmm, I think they are needed... I say that as Aaronmvrider has cracked his mounts on his +4 350 YPVS with JL pipes. Now you might argue that there are other factors, like possible worn front/rear mounts and more power etc but would Yamaha really have fixed this issue with welding tabs rather than just the pipe fix back in the day? I know the ypvs frame is different, but I still think you should fit them, its not that hard... and I would brace weld the mounts to the side rails as well as the cross member to get a very strong mount. I intend to do this on my LC421 frame to beef up this area as while everything is allowed to move with the metalastic bushes i still think the engine moves around quite a bit, especially if you dont have all new bushes. hmmm , ye you well may be right, easier to do it now than later, and as im painting the frame too , damn!! just about convinced myself not to do it and all lol |
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Post by pistanbroke on Dec 8, 2014 23:30:06 GMT 1
just put 4 vibration washers on the engine mounts pissing about welding tie bars on for bodgers hmmm might try that first then, lots easier lol
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?
, my good mate is a welding lecturer in the local college and has had a look and reckons could easily knock up some mounts and weld em on for me, think I will leave it for now, if its a problem we can sort that next winter 