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Post by 4l04ever on Nov 13, 2023 20:02:59 GMT 1
Many thanks for marching my shift stars. They look most excellent.   |
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Post by chrisg on Nov 13, 2023 20:05:17 GMT 1
No excuse for a false neutral now 😆
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Post by dusty350 on Nov 13, 2023 20:55:35 GMT 1
Al's done them for me in the past too. Top bloke, top work  |
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Post by shaunthe2nd on Nov 13, 2023 20:57:26 GMT 1
How many? lol.
Done that mod 2 or 3 times and always improved getting neutral, certainly worth doing.
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Post by alankelly on Nov 13, 2023 21:22:42 GMT 1
Many thanks for marching my shift stars. They look most excellent. Hi Rob You are welcome Best wishes Al |
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Post by reedpete on Nov 13, 2023 21:43:34 GMT 1
There’s only one problem with getting a reputation… everyone gets to find out ! 😂
Save me risking my fingers on the grinding wheel next time I need one doing ….
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Post by donkeychomp on Nov 13, 2023 22:44:27 GMT 1
He is good isn't he? I've had several parts from Al and they are superb. Keep it up mate.
Alex
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Post by jon on Nov 14, 2023 20:07:14 GMT 1
I did this mod once, and didn’t like it. I can confirm it does change things. Stupidly I did it to an unknown engine I was building. I can confirm when it was replaced with a standard one that it had no problem selecting neutral. It made the gearbox so sensitive, sometimes it would jump out of gear into neutral if you gave it the beans in first.
Jon
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Post by stirling11 on Nov 15, 2023 13:19:13 GMT 1
Pardon my ignorance, what is the actual modification that was performed ?
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Post by 4l04ever on Nov 15, 2023 20:39:36 GMT 1
5 of the points on the shift star have been rounded so they are not so pointy...
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Post by 4l04ever on Nov 15, 2023 20:40:37 GMT 1
I did this mod once, and didn’t like it. I can confirm it does change things. Stupidly I did it to an unknown engine I was building. I can confirm when it was replaced with a standard one that it had no problem selecting neutral. It made the gearbox so sensitive, sometimes it would jump out of gear into neutral if you gave it the beans in first. Jon Did you try a new spring on the stopper arm, as it sounds like it was not being pushed into the star hard enough? |
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Post by alankelly on Nov 15, 2023 20:41:11 GMT 1
 Before and after pic |
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Post by jon on Nov 15, 2023 22:38:01 GMT 1
I did this mod once, and didn’t like it. I can confirm it does change things. Stupidly I did it to an unknown engine I was building. I can confirm when it was replaced with a standard one that it had no problem selecting neutral. It made the gearbox so sensitive, sometimes it would jump out of gear into neutral if you gave it the beans in first. Jon Did you try a new spring on the stopper arm, as it sounds like it was not being pushed into the star hard enough? I really think this mod depends on whether it’s needed to try and help other issues. Standard setup worked fine for me. Jon |
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Post by chrisg on Nov 15, 2023 22:45:29 GMT 1
I did this mod once, and didn’t like it. I can confirm it does change things. Stupidly I did it to an unknown engine I was building. I can confirm when it was replaced with a standard one that it had no problem selecting neutral. It made the gearbox so sensitive, sometimes it would jump out of gear into neutral if you gave it the beans in first. Jon Did you fit the roller bearing in place of the original roller? |
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Post by jon on Nov 15, 2023 22:47:46 GMT 1
No. Just did the shift star mod. Standard setup worked for me just fine.
Jon
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Post by 4l04ever on Nov 16, 2023 8:04:47 GMT 1
I think you can do this mod one of two ways. Either use a weaker spring or a more rounded star. Both have the same effect of making it easier to rotate the gear selector drum. If you have a weak spring and a rounded star it is probably not held in gear enough so best to have one or the other.
If you look back at an Air cooled RD shift star, they were more rounded.
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Post by beardy on Nov 16, 2023 11:33:21 GMT 1
Before and after pic So the one at 11 o’clock is left alone? |
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Post by 4l04ever on Nov 16, 2023 14:47:05 GMT 1
The peak that is left unmodified is between 6th and 1st gear so you should never go over that peak. The gears are selected when the stopper arm is in one of the dips. Neutral is when the stopper arm is in the groove at the top of the peak at 9'o'clock.
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