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#405096 - 11/22/11 11:45 pm Triumph Lower Yoke 97-1284  
Joined: Mar 2008
Posts: 248
Cheyenne Offline
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Cheyenne  Offline
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Solebury,Pennsylvania, USA
Can anyone tell me if this is a correct tree for pre-unit 650 ?

Part # 97-1284

Last edited by Cheyenne; 11/22/11 11:45 pm.
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#405546 - 11/25/11 5:07 pm Re: Triumph Lower Yoke 97-1284 [Re: Cheyenne]  
Joined: Oct 2006
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Irish Swede Online content
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Irish Swede  Online Content
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Elburn, Ill. USA
First, where are you getting the number "97-1284?"
Part number 1284 is too low to have originally been a "97" number. It is more likely to be "H1284."

Second, is the number you quote cast onto the fork tree?
Often, Triumph casting numbers are one or two numbers away from the actual part number. The number closest to the one you quote
is "H1283" which my parts books show as being the lower fork tree for 1960-62 duplex-framed pre-unit 650 Triumphs.

I may be wrong on this, but that is my closest guess.

#405590 - 11/25/11 8:33 pm Re: Triumph Lower Yoke 97-1284 [Re: Cheyenne]  
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Tiger100 Offline
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Tiger100  Offline
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Irish, that is what I came up with also so figured either I was off track or number was maybe mistyped.


Regards

Grant
#405884 - 11/27/11 6:08 pm Re: Triumph Lower Yoke 97-1284 [Re: Tiger100]  
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Cheyenne Offline
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Cheyenne  Offline
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Solebury,Pennsylvania, USA
Well it gets here tomorrow that is teh # I was given,,so will be able to check that soon,,will also need to find matching top. Stem is 7 5/8 tall,,and he said 6 5/8 tube centers, stem OD 15/16



Last edited by Cheyenne; 11/27/11 6:09 pm.
#406018 - 11/28/11 11:24 am Re: Triumph Lower Yoke 97-1284 [Re: Cheyenne]  
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Tiger Offline
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Tiger  Offline
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Threaded lug beneath bottom yoke could make it 1968 or '69 or '70, that lug being to mount the zener heat sink ?

Tube centres for 1969 / '70 are listed in Woolridges book as 6 3/4" up from 6 1/2" from previous.


1969 TR6R
7.62 x 51 is not a maths puzzle.
#406032 - 11/28/11 1:59 pm Re: Triumph Lower Yoke 97-1284 [Re: Tiger]  
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royaloilfield Offline
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royaloilfield  Offline
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Cheyenne,
check your messages..


Brian
#406134 - 11/28/11 10:21 pm Re: Triumph Lower Yoke 97-1284 [Re: Cheyenne]  
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Cheyenne Offline
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Cheyenne  Offline
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Posts: 248
Solebury,Pennsylvania, USA
ok 6 1/2 centers and 33 mm , 1" stem.. looks like 97-4284

Last edited by Cheyenne; 11/28/11 10:21 pm.

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