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Old 11-05-2008, 12:01 AM   #1
Triumphteer
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Default triumph neck bearings

i have a '69 triple and fork set up with a '65 frame. i am planning on buying a new set of tapered roller bearings to slip in there to replace the older style cup bearings.....am i going to be o.k.?? i am 90% sure, but once i was 90% sure i found the right girl to marry too.

so i think i need some assurance or a kick in the head to be completely sure or completely unsure, whatever the case may be. any expert advice or pictures of single female friends would be appriciated.

thanks.
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Old 11-05-2008, 12:07 AM   #2
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Default Re: triumph neck bearings

i think you should be good with the bearing setup. if i remember right it wasnt till the 70's that they changed stem size.
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Old 11-05-2008, 12:11 AM   #3
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Default Re: triumph neck bearings

thanks for the reply, but no way is she single!! really?
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Old 11-05-2008, 12:14 AM   #4
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Default Re: triumph neck bearings

LMAO ...... careful what you ask for .... you could drink her pretty
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Old 11-05-2008, 02:27 AM   #5
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Default Re: triumph neck bearings

Not sure if it is me but I think you need to install new races to hold the tapered bearings. I am putting a 71 tree onto a 65 frame I have new races but I don't know their name. I don't think the issue is stem size, it's needing the race. Hopefully the next guy will clear this up.
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Old 11-05-2008, 09:42 AM   #6
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Default Re: triumph neck bearings

and the plot thickens........
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Old 11-05-2008, 10:02 AM   #7
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Default Re: triumph neck bearings

Quote:
Originally Posted by joes bakery View Post
LMAO ...... careful what you ask for .... you could drink her pretty
That one would take a powerfull lot of drink'in........BUT;.I ain't in the habit of turning it down.
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Old 11-05-2008, 10:36 AM   #8
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Default Re: triumph neck bearings

You want the complete conversion kit, with the taper bearings and races. The races have a shim/sleeve that fits them into the pre-oil frame. Need the whole kit.

http://www.raskcycle.com/cgi-bin/car...=Fork+Bearings (first item)
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Old 11-05-2008, 10:48 AM   #9
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Default Re: triumph neck bearings

i have a '74 fork and a '69 frame

i bought a conversion kit for the frame with the intention of buying differnt bearings to fit the fork

would a stem spacer be a better approach and shim the stem to the bearing i.d.

thanks
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Old 11-05-2008, 11:21 AM   #10
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Default Re: triumph neck bearings

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Originally Posted by vicious View Post

i have a '74 fork and a '69 frame

i bought a conversion kit for the frame with the intention of buying differnt bearings to fit the fork

would a stem spacer be a better approach and shim the stem to the bearing i.d.

thanks
In this case, I would take the bearing from the kit and a bearing from a stock oil-frame (or the stem) to a bearing house.

Have them match the o.d. of the kit bearing & the i.d. of the o.i.f. bearing with a new bearing for your combo, rather than fabbing/adding a new part like a sleeve or shim.
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Old 11-05-2008, 12:38 PM   #11
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Default Re: triumph neck bearings

65 bonneville frame, DNA springer. when i switched i used this:
http://britcycle.com/Products/99/99_3733a.htm
worked like a champ. . . . .
peace.. B.M.G.
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Old 11-05-2008, 05:08 PM   #12
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Default Re: triumph neck bearings

What Dragon says MAY be easier said than done about finding bearings to fit a 73 f/e to a 69 frame, I did it decades ago as a kid and the same tapered rollers are still going strong, they have dust seals too, but needed a sleeve turned up for the OD of the bearing shell. To totally keep out the crap, stuff some foam in the frame.
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Old 11-14-2008, 09:47 AM   #13
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Default Re: triumph neck bearings

Quote:
Originally Posted by Dragon View Post
In this case, I would take the bearing from the kit and a bearing from a stock oil-frame (or the stem) to a bearing house.

Have them match the o.d. of the kit bearing & the i.d. of the o.i.f. bearing with a new bearing for your combo, rather than fabbing/adding a new part like a sleeve or shim.

went to bearing house and they said that they do not make a bearing with the 1.9800 od (69 frame) and .750 id (74 neck)

second thought was get a pre 70 neck but is the tube diameter of the pre 70 fork tube the same 35mm?? if so wouldn't this be the simple answer??
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Old 11-14-2008, 06:23 PM   #14
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Default Re: triumph neck bearings

Google SRM Engineering in England, they make bearings for this purpose for 73 tri f/end to fit 60's Beeza frames, so if a BSA gooseneck is the same as early trump you could have an in there Vicious.
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Old 11-14-2008, 06:49 PM   #15
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Default Re: triumph neck bearings

Quote:
Originally Posted by vicious View Post
went to bearing house and they said that they do not make a bearing with the 1.9800 od (69 frame) and .750 id (74 neck)

second thought was get a pre 70 neck but is the tube diameter of the pre 70 fork tube the same 35mm?? if so wouldn't this be the simple answer??
The race OD for a pre 71 is more like 2.090"..not 1.98". This is why all the tapered roller conversions have a sleeve shrunk onto the OD of the race (they start with a 2.0" OD race)

IIRC, if you just order a pre 70 conversion kit and a set of 71+ bearings, you're good to go.
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Old 11-23-2008, 08:49 AM   #16
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Default Re: triumph neck bearings

bought a 69 stem saturday and solved the whole issue.

thanks
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