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Post by slittlewing on Feb 2, 2021 8:35:32 GMT -5
Hi Azwood,
How will you control the engagement of the starter motor? Will you just drive onto the compressor nut somehow?
Cheers
Scott
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Post by wannabebuilderuk on Feb 2, 2021 12:31:55 GMT -5
Hi Azwood, How will you control the engagement of the starter motor? Will you just drive onto the compressor nut somehow? Cheers Scott Scott, that's pretty much the standard way just use a bendix clutch with a socket on the end to engage it. |
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Post by slittlewing on Feb 2, 2021 17:23:45 GMT -5
I have seen some that use a rubber tube or similar to grip the comp but, I’m assuming the motor would be doing pretty high speed by the time centrifugal force would move the bendix toward the comp nut? so a 6 point socket might end up not seating on nut (or making a mess of it)?
Also interested as to where the clutches are available or if home made is really only option!
Cheers
Scott
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Post by wannabebuilderuk on Feb 2, 2021 18:05:44 GMT -5
It's not centrifugal forces that move it, the nut is pushed forward because the chunk of brass which has the spiral slot has enough inertia to not start rotating until it has gone forward and the pin reaches the end of the slot. You can see it here. youtu.be/nwt09r5ldiEYea you can use a large lump of rubber to grip the nut (best if you have a domed nut as then it gets better grip) instead of chewing up the flats trying to engage but a standard socket on the bendix would work. |
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Post by azwood on Feb 2, 2021 18:30:49 GMT -5
Yep pretty much just a Bendix clutch and a socket nothing to fancy
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Post by azwood on Feb 2, 2021 18:32:41 GMT -5
Yep pretty much just a Bendix clutch and a socket nothing to fancy I did try a urithane bush friction coupling on my die grinder it did work to |
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Post by azwood on Feb 2, 2021 18:36:07 GMT -5
I'm not that keen on putting load on the bearings from a friction coupling but.
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Post by wannabebuilderuk on Feb 2, 2021 18:42:56 GMT -5
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Post by smithy1 on Feb 17, 2021 23:52:29 GMT -5
That Jet Joe starter clutch is tiny....and used on microjets....I have a few of them at home. They use an O-ring internally to "grab" the compressor nut. Smithy.. |
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Post by azwood on May 2, 2021 23:09:51 GMT -5
Still working on the bike life has got in the way a lot but hopefully soon it will be done.
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Post by racket on May 2, 2021 23:43:18 GMT -5
Hi Aaron
Thats good to hear , keep at it :-)
Cheers
John
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Post by azwood on Jul 9, 2021 21:41:58 GMT -5
Finally found some time to do more on the bike.im trying to make an exit pipe that fits in the space I have that's functioning I think it should work ok considering the igv areas only 68sqmm  |
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Post by azwood on Aug 26, 2021 19:25:23 GMT -5
I'm sure some has told me but I forget.if I have an 28in wheel what ROMs will I be doing at say 200kph I'm getting mixed results on websites
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Post by racket on Aug 26, 2021 20:00:03 GMT -5
Hi Aaron
200kph = 120 mph = 2 miles per minute = 10,560 ft/min
28" dia tyre = 7.33 feet circumference
10,560/7.33 = 1440 rpm for the wheel
Cheers
John
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Post by azwood on Aug 26, 2021 20:08:04 GMT -5
Hi Aaron 200kph = 120 mph = 2 miles per minute = 10,560 ft/min 28" dia tyre = 7.33 feet circumference 10,560/7.33 = 1440 rpm for the wheel Cheers John Thanks that's pretty much the rpm I'll get if the turbine hits 40.000rpm if not I'll change the socket but its a good place to start |
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