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Post by dusty350 on Apr 23, 2022 7:18:38 GMT 1
As others have said, there are many factors that affect the neutral selection issue - oil, clutch adjustment, tolerances of all parts etc etc. I dont think the shift pro is enough on it's own, and my experience indicates the star mod has more of an effect. Having said that, some guys report good neutral selection without a shift pro or star mod - others do both and still struggle ! Dusty
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Post by zig on Apr 23, 2022 9:46:59 GMT 1
you need to adjust the bolt that the gear shaft spring goes over its an eccentric bolt the gear pawl needs to be central between the pegs on star shift wheel probably not a good explanation but it tells you about this in the workshop manual adie Hi Adie have this done aswell , thinking of the star mod that dusty has discussed on here aswell as a new eccentric bolt and tang washer also the clutch adjuster upgrade that Norbo has on the shop open to any other things i can do when i am in their as i have a kicker noise i assume from the idle gear so going for the upgrade also from Norbo ZiG
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Post by zig on Apr 23, 2022 9:48:31 GMT 1
As others have said, there are many factors that affect the neutral selection issue - oil, clutch adjustment, tolerances of all parts etc etc. I dont think the shift pro is enough on it's own, and my experience indicates the star mod has more of an effect. Having said that, some guys report good neutral selection without a shift pro or star mod - others do both and still struggle ! Dusty Dusty did i read in a post by yourself you can buy the star mod as it is a Banshee upgrade as is ? ZiG
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Post by shaunthe2nd on Apr 23, 2022 9:53:39 GMT 1
After seeing Dusty's previous posts re star wheel mod I've done a couple myself since and both gave great results. Easy to do yourself too, 10-15mins on a grinding wheel to carefully round off the peaks on the star seem to do the business.
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Post by zig on Apr 23, 2022 10:01:03 GMT 1
After seeing Dusty's previous posts re star wheel mod I've done a couple myself since and both gave great results. Easy to do yourself too, 10-15mins on a grinding wheel to carefully round off the peaks on the star seem to do the business. thats good to know it's an easy fix with a grinder , i am def going to have a go as i have nothing to lose , it cant make it any worse LOL thanks for that ZiG
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Post by dusty350 on Apr 23, 2022 11:07:17 GMT 1
Yep, as Shaun says, have a go yourself. Pen a line to follow on each peak and take your time And yes, you can buy them. Banshee parts suppliers usually do them. Dusty
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Post by zig on Apr 23, 2022 12:34:29 GMT 1
Yep, as Shaun says, have a go yourself. Pen a line to follow on each peak and take your time And yes, you can buy them. Banshee parts suppliers usually do them. Dusty i think i will have a go myself , more satisfying me thinks ZiG
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Post by chrisg on Apr 24, 2022 15:38:12 GMT 1
Are the stars not HCS or case hardend?
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Post by alankelly on Apr 24, 2022 16:02:52 GMT 1
Are the stars not HCS or case hardend? Yes they are hardened Reground the profile on mine on a surface grinder with a profiled wheel
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Post by zig on Apr 24, 2022 17:22:47 GMT 1
Are the stars not HCS or case hardend? Yes they are hardened Reground the profile on mine on a surface grinder with a profiled wheel hi Alan .... did you delibertly leave a point not ground on yours ??
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Post by alankelly on Apr 24, 2022 17:24:28 GMT 1
Yes it the “end point” on the star between 6th and 1st that is not used so does not need grinding
Best wishes Al
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Post by abar121 on Apr 24, 2022 17:52:49 GMT 1
Looks like a great mod.
I'm having trouble gear selection on my F1, would love to do this mod.
Got a new clutch and steels to try first of all.
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Post by stusco on Apr 24, 2022 18:00:27 GMT 1
If your in about your clutch you should give the mod a go saves time and money in long run
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Post by 29davyt on Apr 24, 2022 19:03:11 GMT 1
If you put your bike on centre stand, start it then put it in 1st gear, pull your clutch in and see if the back wheel spins, if it does with plenty of resistance selecting neutral will be extremely difficult. Highlights an issue with clutch rather than selector star ..
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Post by chrisg on Apr 24, 2022 21:51:55 GMT 1
From what Ive seen on YouTube, the moded star smooths and quickens gearchange BUT how does it aid neutral, as the neutral "cut out" is unmodified?
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Post by abar121 on Apr 25, 2022 10:08:37 GMT 1
From what Ive seen on YouTube, the moded star smooths and quickens gearchange BUT how does it aid neutral, as the neutral "cut out" is unmodified? Not by itself looking at the vid, but the roller bearing could. Not tried any of this myself though.
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Post by chrisg on Apr 25, 2022 11:00:50 GMT 1
My first thought would be to modify the neutral cut out somehow, maybe slightly deeper?
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Post by Tobyjugs on Apr 26, 2022 21:25:13 GMT 1
I firmly believe most of the above mentioned mods are a plaster over a wound. The best way forward is first make sure your selector is properly adjusted. Sometimes the weight from your gear selector can influence this.
Secondly the friction between your plates needs to be reduced when in opened position. This can be caused by various problems. I have found that if your plates are in good condition and used regularly the gap you can create between the plates combined with the oil viscosity is important. Without doubt using a clutch perch which can pull the plates further apart have been my best option so far.
I would also like to add it's took a lot of trial and error (expense for the above mentioned parts) to come to this conclusion.
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Post by 4l04ever on Apr 27, 2022 21:01:47 GMT 1
I used the Yam spring (stronger) spring after reading on here the weaker spring was too weak with the other mods. Wont know for sure until the bike is finished of course, but the test on the bench looks promising compared to no mods at all. Dusty just seen this old post about the star mod etc , can i ask you Dusty for an update on how you got on with everything after you got your build up and going interested as i am having the same problem with neutral after a complete complete build and everything brand new .. clutch basket plates fiber's Alan's selector mod with bearing new selector shaft ete etc you get the picture , no neutral only when you turn the bike off ZiG Which clutch plates did you use? Did you check the metal plates? I have seen some fibre plates which were warped after a few thousand miles with little wear, so may have been warped from new. Any clutch drag will preload the gears, which is not good for getting neutral.
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Post by zig on Apr 29, 2022 14:52:15 GMT 1
just seen this old post about the star mod etc , can i ask you Dusty for an update on how you got on with everything after you got your build up and going interested as i am having the same problem with neutral after a complete complete build and everything brand new .. clutch basket plates fiber's Alan's selector mod with bearing new selector shaft ete etc you get the picture , no neutral only when you turn the bike off ZiG Which clutch plates did you use? Did you check the metal plates? I have seen some fibre plates which were warped after a few thousand miles with little wear, so may have been warped from new. Any clutch drag will preload the gears, which is not good for getting neutral. i used a brand new set of EBC DRC043 as used by Dusty in his engine build thread , they come with new steels and i have only done 4 miles at present ZiG
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Post by abar121 on Apr 29, 2022 15:16:41 GMT 1
Which clutch plates did you use? Did you check the metal plates? I have seen some fibre plates which were warped after a few thousand miles with little wear, so may have been warped from new. Any clutch drag will preload the gears, which is not good for getting neutral. i used a brand new set of EBC DRC043 as used by Dusty in his engine build thread , they come with new steels and i have only done 4 miles at present ZiG You might find that she loosens up after a bit of riding. So to speak.
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Post by ozzysbikes on Apr 30, 2022 20:28:38 GMT 1
This might be controversial but I don't want neutral to be "easy to find" my F2 takes a bit of prodding to get neutral but is good going up and down the box so I prefer hard to find neutral but no missed gear changes 🤷♂️
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Post by 4l04ever on Apr 30, 2022 20:35:00 GMT 1
The shift star mod seems to reduce the force needed to change gear. I think this is how this mod helps to get neutral.
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Post by Tobyjugs on May 1, 2022 9:09:54 GMT 1
With a dry clutch the standard shift star is very sensitive to gear changes.
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Post by jon on May 1, 2022 10:18:12 GMT 1
Stupidly (as it turned out) I did the shift star mod on the last YPVS I built. Although I rode it home I’d forgotten what the gearbox was like by the time I rebuilt it.
That gearbox didn’t need it and it made the gears to easy to select. I swear a couple of times the gearbox jumped by itself.
So I suspect some engines benefit while others do not?
Jon
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Post by headcoats on May 1, 2022 10:24:17 GMT 1
Just make the practice of selecting neutral just before you stop
Like Jon said the gearbox apart from getting neutral sometimes is a pretty good box,only needing a gentle snick up or down
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Post by zig on May 1, 2022 13:18:22 GMT 1
so i have stripped the clutch assembly on the PV and have carried out the star mod which was quite easy to do i also have purchased from Norbo a new selector kit with spring etc and the new roller clutch pusher upgrade while there i also replaced the idle gear , again from Norbo , with the hardened version with the roller bearing assembly .... the only thing stopping me at this point from final assembly is the fact i cant get hold of the idle gear shims and circlip , B/O in Fowlers. once i get these sorted and get it all back together i will let everyone know what if any difference i experience if anyone thinks i should do anything else before i finish please let me know , any help appreciated fingers crossed ZiG
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Post by abar121 on May 1, 2022 14:42:02 GMT 1
Just make the practice of selecting neutral just before you stop
Like Jon said the gearbox apart from getting neutral sometimes is a pretty good box,only needing a gentle snick up or down Like many, I've been doing that since sixteen. It just won't go in now even when rolling on my F1. The clutch is clearly at fault and I'll fix it when I have a moment.
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Post by srhiskx on May 2, 2022 0:25:38 GMT 1
I did the shift star mod on my YPVS and I actually found it missed shifts more often and seemed like it would jump out gear once in awhile. At the end of the season I tore it down and replace the shift star with a stock one and used a shift pro mod and the tranny has shifted perfectly ever since. Just my experience.
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