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Classic, Vintage & Veteran For Coventry and Meriden Models. Anything pre-Hinckley goes.

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Old 02-09-2009, 01:47 PM   #1 (permalink)
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Pre Unit Telescopic Forks - Different Types

Hi I'm new to the forum. Looking for some help with the front forks on my 59 Bonneville project. The forks were a bit messed up when I got the bike. The bike came with gaitors and no nacelle but the forks don't look like Trophy forks according to my parts catalogue. On disassembly I found some broken/bent/missing parts inside. So the fun begins.

The lower legs are stamped H1119 and H1120. The book calls for H1201 and H1202. Are these 1119/1120 legs from another model? If so which one? Are they compatible with the internals from the 59 Bonneville? I'm kinda concerned that what I have might be a mix of wrong parts, could be unsafe.

I don't know how many different types of pre unit tele forks Triumph made or what the differences were. I noticed there is at least one other '59 T120 owner on the forum. I know these are pretty specific questions, but any help would be appreciated. Thanks.
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Old 02-10-2009, 02:24 AM   #2 (permalink)
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Give us an engine and frame number and some photos and and we can take it from there. You may want to measure them as well as they differ ever so slightly. Also complete your profile where you at etc.

Cheers
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Old 02-10-2009, 01:29 PM   #3 (permalink)
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Thanks Bushybester, Engine#T120 024444; Frame # 024444. The lower legs are 12" long, measured from the top of the threads to the bottom of the cylindrical portion (not including the spindle lug); stanchions are 22 1/8" long and 1 5/16" dia; stanchion cap nuts are drilled and threaded through; the internal springs are 19 7/8" long and one has some red paint on the end; the oil restrictor rods are 21 1/2" long, one has the lower threads broken off and the other one is bent; pressure tube assembly is about 9 3/8" long including the valve body on the bottom and the sleeve screwed on top. The valve body has a slot on the side to accept the drain plug screw, valve body doesn't have a "peg" on the bottom.

I'm not having any luck uploading photos but I'll look at the sticky closer and try again.
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Old 02-10-2009, 01:43 PM   #4 (permalink)
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Here's my attempt at a photo.

[/IMG]
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Old 02-10-2009, 02:42 PM   #5 (permalink)
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Canuck, PM your email address to me and I'll send some details.
Roy.
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Old 02-10-2009, 02:47 PM   #6 (permalink)
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I set up a photo album but having some trouble copying photo into the message. Sorry, new at this.
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Old 02-11-2009, 11:27 AM   #7 (permalink)
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Old 02-11-2009, 06:34 PM   #8 (permalink)
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Thanks GrandPaulZ, This looks like a good forum with lots of expertise. I've got a pretty big project on my hands. The engine is ready and the frame is out for paint. The forks are a challenge right now and I'm sure there will be many more, (especially the tin!). She turns 50 this month according to info I got from another owner. I figure at this age there's no need to rush. Cheers!
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Old 02-12-2009, 02:49 AM   #9 (permalink)
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***********HAPPY BIRTHDAY YESTERDAY*****************
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Old 02-12-2009, 03:15 AM   #10 (permalink)
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Can you email me some pictures if I PM you my email? By the sounds of it, seems okay. Here are a few photos. I had to make my own nacelles etc.

I hope that will help.Must say you got a really easy number. Have you registered her (it) with the TOMCC?

Last edited by pre unit Thruxton; 03-06-2009 at 12:57 PM.
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