Hello all, wondering what people are using for a front sprocket. I have already ordered a poor fitting jt that will not be installed. Just trying to prevent ordering junk again. I have found an afam sprocket with the part number 28401-16. Does this ring a bell for anyone?
3Vd Front Sprocket
Started by
IrkinBollikans
, Apr 04 2023 02:33 am
8 replies to this topic
#2
dapleb
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Posted 04 April 2023 - 04:57 am
Your output shaft will be eternally grateful.
AFAM has internal spline profile the same as OEM.
JT has internal spline profile of a 5 year olds drawing.
Sorry don't know AFAM codes.
AFAM has internal spline profile the same as OEM.
JT has internal spline profile of a 5 year olds drawing.
Sorry don't know AFAM codes.
"Whats up", "Piston Broke", "Yeah me too...hic"
If you want to mark your location on the Carpe map: http://www.carpe-tdm...opic.php?t=5117
Doin valve clearances? Use dappers valve shim exchange program and the job will be carroty - Free (other than you postin me yer shims) for sporting members.
Active member of TPLQHCSRSFC and TSRMCMAS (even though a year off) and avid fan of PM not sent.
If you want to mark your location on the Carpe map: http://www.carpe-tdm...opic.php?t=5117
Doin valve clearances? Use dappers valve shim exchange program and the job will be carroty - Free (other than you postin me yer shims) for sporting members.
Active member of TPLQHCSRSFC and TSRMCMAS (even though a year off) and avid fan of PM not sent.
#3
fixitsan
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Posted 04 April 2023 - 07:07 am
Hello all, wondering what people are using for a front sprocket. I have already ordered a poor fitting jt that will not be installed. Just trying to prevent ordering junk again. I have found an afam sprocket with the part number 28401-16. Does this ring a bell for anyone?
When you say it was poor fitting, do you mean it flopped about on the output shaft ?
On the later 850 there were two types of sprocket, a wide and a narrow, I made the mistake of ordering the wrong one and thought all JT sprockets were rubbish after that. Depends where you buy from too, some list different dates for the wide and the narrow, I never found a definitive list, only that there are 2 types for 850's
Ohlins, PC3, fuel cut defeat, +4deg timing, 17" front wheel.
#4
IrkinBollikans
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Posted 04 April 2023 - 09:56 pm
[quote name="fixitsan" post="397874" timestamp="1680592044"]
When you say it was poor fitting, do you mean it flopped about on the output shaft ?
It was both too thick for the lock washer to fit, and loose fitting on the shaft. I will proceed with the afam branded one that I found. Hopefully it's the correct spline pattern
When you say it was poor fitting, do you mean it flopped about on the output shaft ?
It was both too thick for the lock washer to fit, and loose fitting on the shaft. I will proceed with the afam branded one that I found. Hopefully it's the correct spline pattern
Edited by IrkinBollikans, 04 April 2023 - 09:56 pm.
#5
dablik
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Posted 05 April 2023 - 08:04 am
You may have to use a very small splodge of loctite 638, it is 638 innit daps ?
Bigred mk1 R1 Calipers- Braided lines- Givi wing rack-Crash bungs- Hi vis bullets-PR2's- and a hoot to ride.
Quad 900 Silver Laser duo tech pipes-Scott oiler-Engine crash bars- Radiator mounted see me ring LED's-Datatool system 3 alarm -Centre stand- Extender fender-Renthal bars-Handle bar risers-Mirror extenders-BMW GS Handgaurds-Acumen uprated horn & Nautilus-Stainless steel Radiator guard-Givi wing rack-OEM screen-Yammy touring screen-MRA Vario-MRA Double bubble cut down for fast as fk riding-Tiger screen-Tank protector-Stomp grip panels-Optimate lead Gone to Heaven 
1991 MK1 in need of some TLC watch this space Gone to Heaven 
Sorted and on the Road Mick 
it's the bike that Jack built 
#6
IrkinBollikans
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discovering Carpe
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Posted 05 April 2023 - 07:29 pm
You may have to use a very small splodge of loctite 638, it is 638 innit daps ?
I have searched through old threads and found the same advice. I will order some before finishing this "simple chain swap" haha. Should this be used on the threads of the shaft as well, or is loctite 243 the better choice?
#7
dapleb
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Posted 05 April 2023 - 08:35 pm
Loctite Hawaii 520....ya gorrit dabbers. You dont need to sploodge this stuff. There was helluva debate aboot where to stick it at the time but small amount threads small amount inter should do it. Gentle heat will help when removal requiredYou may have to use a very small splodge of loctite 638, it is 638 innit daps ?
Lots of info ear http://www.carpe-tdm...e=8#entry279080
"Whats up", "Piston Broke", "Yeah me too...hic"
If you want to mark your location on the Carpe map: http://www.carpe-tdm...opic.php?t=5117
Doin valve clearances? Use dappers valve shim exchange program and the job will be carroty - Free (other than you postin me yer shims) for sporting members.
Active member of TPLQHCSRSFC and TSRMCMAS (even though a year off) and avid fan of PM not sent.
If you want to mark your location on the Carpe map: http://www.carpe-tdm...opic.php?t=5117
Doin valve clearances? Use dappers valve shim exchange program and the job will be carroty - Free (other than you postin me yer shims) for sporting members.
Active member of TPLQHCSRSFC and TSRMCMAS (even though a year off) and avid fan of PM not sent.
#8
Studley Ramrod
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Posted 06 April 2023 - 03:38 pm
I fitted an Ognibene front sprocket avec loctite 638, 2 yrs ago. Still working 😁
Mk2a 2000 in Silver. Top end Refurb @ 41100 miles, Scottoiler, Renthal Road High Bars, Up & Back Bar Risers, Bellypan, DL650 Handguards, Capt. Picard Bar Ends, House of Henty SS Wheel spacers, New Seat Cover Fitted. 58 MPG !! Now owned by chrisbee ! Studley's mk2a Bloggerydoodaah ! Photos of my first MK1 Photos of my MK2a TPLQHCSRSFC No. 1 Fan
#9
dablik
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Posted 06 April 2023 - 07:38 pm
Good to know chaps, me grey cells are working, at least on this occasion
Bigred mk1 R1 Calipers- Braided lines- Givi wing rack-Crash bungs- Hi vis bullets-PR2's- and a hoot to ride.
Quad 900 Silver Laser duo tech pipes-Scott oiler-Engine crash bars- Radiator mounted see me ring LED's-Datatool system 3 alarm -Centre stand- Extender fender-Renthal bars-Handle bar risers-Mirror extenders-BMW GS Handgaurds-Acumen uprated horn & Nautilus-Stainless steel Radiator guard-Givi wing rack-OEM screen-Yammy touring screen-MRA Vario-MRA Double bubble cut down for fast as fk riding-Tiger screen-Tank protector-Stomp grip panels-Optimate lead Gone to Heaven
1991 MK1 in need of some TLC watch this space Gone to Heaven Sorted and on the Road Mick it's the bike that Jack built
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