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B25/B44 tach drive #7686
01/30/06 5:47 am
01/30/06 5:47 am
Joined: Jan 2006
Posts: 31
Oak Harbor, Washington
C
Catamountrdr Offline OP
BritBike Forum member
Catamountrdr  Offline OP
BritBike Forum member
C

Joined: Jan 2006
Posts: 31
Oak Harbor, Washington
Anyone know if the tach drive for the B44/B25 is a 4:1? If not, what is it?
Thanks

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Re: B25/B44 tach drive #7687
01/30/06 8:40 am
01/30/06 8:40 am
Joined: Dec 2004
Posts: 9,676
Scotland
kommando Online content
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kommando  Online Content
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Joined: Dec 2004
Posts: 9,676
Scotland
Its 4 to 1, though I have seen the early tach head on eBay described as a 3 to 1 oddly, but Rupert Ratio says 4 to 1 which is enough for me.

Re: B25/B44 tach drive #7688
01/30/06 9:08 am
01/30/06 9:08 am
Joined: Aug 2001
Posts: 1,964
The Northwoods... Michigan
Steve Erickson Online content
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Steve Erickson  Online Content
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Joined: Aug 2001
Posts: 1,964
The Northwoods... Michigan
Really? That's a bit surprising, as to the best of my recollection all BSA tachs are 3:1 ratio, and all Triumph tachs are 4:1. I just bought a tach drive for a 441, haven't installed it yet, and, apparently a good thing, haven't bought a tach for it yet. If anyone has personal knowledge on this, I hope they post...Rupert has made a mistake or two, wonder if this may be one? Hate to find out the hard way if it is or isn't....

Re: B25/B44 tach drive #7689
01/30/06 9:44 am
01/30/06 9:44 am
Joined: Aug 2001
Posts: 97
big ol' Atlantic sandbar
J
JonH Offline
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JonH  Offline
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J

Joined: Aug 2001
Posts: 97
big ol' Atlantic sandbar
The optional tach was the 3003/01, 4:1 by the Smiths references.

Re: B25/B44 tach drive #7690
01/30/06 10:03 am
01/30/06 10:03 am
Joined: Aug 2001
Posts: 1,964
The Northwoods... Michigan
Steve Erickson Online content
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Steve Erickson  Online Content
BritBike Forum member

Joined: Aug 2001
Posts: 1,964
The Northwoods... Michigan
Thank you, good info that maybe saved me from an expensive mistake!

Re: B25/B44 tach drive #7691
01/30/06 11:09 am
01/30/06 11:09 am
Joined: Dec 2004
Posts: 9,676
Scotland
kommando Online content
BritBike Forum member
kommando  Online Content
BritBike Forum member

Joined: Dec 2004
Posts: 9,676
Scotland
I have found Rupert pretty straight in his advice but Roy Bacon is suspect.


Moderated by  Allan Gill, Jon W. Whitley 


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