Redesigning The 1956 Triumph - A Pre Unit Build by Alp - The Jockey Journal Board

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Old 01-21-2011, 05:19 AM   #1
astek
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Default Redesigning The 1956 Triumph - A Pre Unit Build by Alp

This time i am going to document the whole build, and i will post as much as i can. Previously i posted a rigid sportster here on the jj https://www.jockeyjournal.com/forum/s...3365&showall=1
This build will contain mostly classic/vintage parts or handmade components.

here it is:


The bike in question is a numbers matching 1956 T110, it has a pre 55 6t rigid hardtail/seat post.


A lot of the beauty in vintage bikes is in the details which I love to capture in close ups


My goal is to build everything from scratch including the rear portion of the frame (you will see why)

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Disassembling the engine and cleaning parts to start with


Taking care of the crank shaft and sludge tube


ready for tumbling


the cylinder heads were in pretty good shape, surprised not to see any of those hairline cracks




getting ready to strip the paint


after stripping the paint and removing lots of filler this is what i have found,
A poor frame lengthening job, the tubes were totally crooked, look at the previous image with all the filler on, i call that art work,

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The front end that I am going to use is an original pre war Norton 16H Heavy Duty girder, with the rebound springs,


my favorite, scotch-brite


here you see all that surface rust is removed with sb on one tube, pretty straight for a +70 year front end.


more to come,
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Last edited by astek; 01-21-2011 at 05:29 AM.
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Old 01-21-2011, 05:57 AM   #2
Danny F.
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Default Re: Redesigning The 1956 Triumph - A Pre Unit Build by Alp

Looks like you had a VW-Trike springer in there when you got it.. sell it on E-Bay, the vintage VW trike crowd will be thankfull..
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Old 01-21-2011, 05:58 AM   #3
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Default Re: Redesigning The 1956 Triumph - A Pre Unit Build by Alp

This is gonna be GOOD!I'm watching this all the way.
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Old 01-21-2011, 06:23 AM   #4
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Default Re: Redesigning The 1956 Triumph - A Pre Unit Build by Alp

Are you sure that's a '56? Correct me if I've got it wrong but you're saying the seat post has been grafted to the '56 frame from an original Triumph rigid frame? Then the gearbox would be pre '56 also. I've had 2 early '50s Triumphs, it's been quite a while but that whole frame looks early '50s, late '40s to me.
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Old 01-21-2011, 06:38 AM   #5
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Default Re: Redesigning The 1956 Triumph - A Pre Unit Build by Alp

Quote:
Originally Posted by worn View Post
Are you sure that's a '56? Correct me if I've got it wrong but you're saying the seat post has been grafted to the '56 frame from an original Triumph rigid frame? Then the gearbox would be pre '56 also. I've had 2 early '50s Triumphs, it's been quite a while but that whole frame looks early '50s, late '40s to me.
yeah you are right, because it has the rigid type seat post and the rigid hardtail it has a t910 rigid gearbox. but see the head stock and the fork stops it is all 56 "swingarm type" including the backbone. the pre 55 backbone has a different design/angle too.
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Old 01-21-2011, 09:09 AM   #6
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Cool Re: Redesigning The 1956 Triumph - A Pre Unit Build by Alp

Oh yeah, this is definitely going to be a sweet build. Like your use of the Norton girder and looking forward to the details of mounting it to the Triumph frame.

Are you keeping it rigid and shortening it back to stock length or ?
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Old 01-21-2011, 10:23 AM   #7
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Default Re: Redesigning The 1956 Triumph - A Pre Unit Build by Alp

Will follow this one! Great decision on the girder, they are very neat frontends
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Old 01-21-2011, 07:25 PM   #8
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Default Re: Redesigning The 1956 Triumph - A Pre Unit Build by Alp

thanks guys,

Quote:
Originally Posted by whittiger650 View Post
Oh yeah, this is definitely going to be a sweet build. Like your use of the Norton girder and looking forward to the details of mounting it to the Triumph frame.

Are you keeping it rigid and shortening it back to stock length or ?
the plan is to keep it rigid but that lousy hardtail will be disposed. the backbone connection to the hardtail will continue straight on.
I wish i could use the original castings/axleplates but because of the 4" strech and 2-2.5" drop the geometry will change and the original angles on the castings will not work.
I am working on a similar design (axle plates) that will accommodate the 40-50's and I'm also keeping the same offset frame style.
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Old 01-21-2011, 09:24 PM   #9
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Cool Re: Redesigning The 1956 Triumph - A Pre Unit Build by Alp

Sounds interesting. Yep, will be looking forward to the progress !
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Old 01-23-2011, 06:03 PM   #10
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Default Strech & Drop

Here i put an original 52 rigid frame in front of the 56 which sits on the jig, the location of the gearbox and top tail mounts are very close so I figured out the stretch/drop for the 56

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Old 01-23-2011, 07:06 PM   #11
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Default Re: Redesigning The 1956 Triumph - A Pre Unit Build by Alp

A few months ago Alp sent me pics of his frame, and asked me to take a look at it, to see what I thought it might be. As I have owned a lot of these bikes, and it had a 1956-57 swingarm headstock on a rigid front frame section, I told him that it had to be something someone made up - no doubt about it

Now I'm not 100% sure about that.

About a month ago I noticed that my 1955 T100/R rigid frame, had the 1955 swingarm frame headstock on it. I just posted an update in the T100/R-T100RR thread with details and additional pics. Here is one of the headstock on my frame:



You can see the gusseted design that Triumph introduced in 1955.

If you look at Alp's frame, it has the 1956 headstock and a 1956 VIN number. In the close-up pics, the stamp on the frame looks legit. (I haven't seen pics of the engine VIN stamp)

Here's the "however"...

Two things: 1) If you read my post in the other thread, Triumph seems to have continued the use of the 1955 headstock on the 1957-59 rigid racers, not upgrading to the 1956 design. 2) His engine is a T110 650, which would have been an odd bike to make as a rigid, since all racing was 500cc at that time.

Still, I would write and have the VIN number run against the records, just to see what come back. You never know what you are going to find out.

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Old 01-23-2011, 08:42 PM   #12
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Default Re: Redesigning The 1956 Triumph - A Pre Unit Build by Alp

hey Shaggy, thanks for all the info,
here is the headstock of the 56, so you can all see it in detail.

It is genuine #matching
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Old 01-23-2011, 08:52 PM   #13
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Default Re: Redesigning The 1956 Triumph - A Pre Unit Build by Alp

Nice frame jig!
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Old 01-23-2011, 09:22 PM   #14
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Default fabricating the frame parts

back to the build,

I drew a little diagram for the axle plates,


i just wanted to stay close to the classic frame style.












Top tail mounts: Here I am alligning the round steel stock to my previously made tail mount, so i can drill a hole at the same angle.


I made all these parts free hand, no milling/cnc etc. so there are imperfections.

lots of sanding,


some filing








here are all the frame parts that i've made so far (axle plates are not finished yet), going to weld them together soon.
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Old 01-23-2011, 09:30 PM   #15
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Default Re: Redesigning The 1956 Triumph - A Pre Unit Build by Alp

Is that other front end forsale?

Thanks
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Old 01-24-2011, 01:49 AM   #16
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Default Re: Redesigning The 1956 Triumph - A Pre Unit Build by Alp

Quote:
Originally Posted by BOBBERDOGS View Post
Nice frame jig!
Thank you BOBBERDOGS,

Quote:
Originally Posted by 89 Chevy View Post
Is that other front end forsale?

Thanks
yes, please pm if interested, thanks
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Old 01-24-2011, 07:32 AM   #17
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Default Re: Redesigning The 1956 Triumph - A Pre Unit Build by Alp

Beautiful work!
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Old 01-24-2011, 07:51 AM   #18
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Default Re: Redesigning The 1956 Triumph - A Pre Unit Build by Alp

wow! Im following this build to the end ,great workmanship
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Old 01-24-2011, 08:32 AM   #19
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Default Re: Redesigning The 1956 Triumph - A Pre Unit Build by Alp

cool build so far

keep us informed about your progress ...
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Old 01-24-2011, 09:50 AM   #20
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Default Re: Redesigning The 1956 Triumph - A Pre Unit Build by Alp

The tube lugs you made are amazing. Very top notch craftsmenship and attention to detail and that Norton girder is super cool. I love those things.
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