1967 Trophy Bobber - Triumph Forum: Triumph Rat Motorcycle Forums
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post #1 of 41 (permalink) Old 11-10-2010, 04:28 AM Thread Starter
Grand Prix 125
Main Motorcycle: Dyna Street Bob 09
Join Date: Nov 2010
Location: Helsingborg, Sweden
Posts: 33
Other Motorcycle: Triumph Trophy 1967
1967 Trophy Bobber

This Bike used to belong to a relative of mine, the papers says itīs a 1969 Bonneville 120, but engine nr says TR6R DU64221, 67 Trophy. Thanks to members "649cc" and "dbl_delta" i now have this confirmed, and that it has a bonneville top.

The bike was "Bobbed" somewhere in the 70īs, altough the original builder probably called it a "Chopper".

The Bike Hasnīt been registered since 1989, but has always been started atleast once a year and driven aproximately 100 km. I think this is the reason why the engine actually feels in an "ok" condition to begin with. Yesterday i took some pictures, before i started any real cleaning, and also tried to turn the engine, it turned very easy, i was actually "afraid" that it would start hehe.

According to my relative it has never had the oil changed, or been cleaned since he got it, but iīm not sure if heīs just messing with me.

Right now im reading up on this type of engines and making some "cost" planning. Also cleaning it and at the same time getting to know it better.

At the moment iīm not sure how deep into the engine i want to go, i will try to start it up in the weekend. One part of me says "itīs working" and the other says "sludgetrap". Downloaded the manuals from classikebike, and ordered a couple of dvdīs from Lowbrow.

What i do want to do regardless is to overhaul the two carburetters, change most of the gaskets and replace the wiring (iīm thinking one cable at a time and it will be easy?). The fork got me scratching my head too, anybody have any idea what it is? Im thinking something japanese... The front brake (also the only one) should also get some love.

Theres also a box of old parts, must be from the 69 Bonneville, i just looked it over in a hurry, the airfilters are there and the "Triumph" emblem/thing that has to have been on the original tank.

One thing im wondering about the top is what year itīs from, looked at some pictures and it got these bolts on the rockerboxes that i donīt see on all bonnevilles.

A most interesting color is it not?

The exhaust clamps doesnīt look standard haha!

The clutch and brake cable needs to be replaced, very loose fit.

The battery is easily accessible...

The unknown fork.

I dream about polishing, alot.
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post #2 of 41 (permalink) Old 11-12-2010, 12:18 AM
Join Date: Aug 2009
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First glance I was like, "wut?!"

But looking closely, what you have there is a classic time warp from the '70s
Originally Posted by _Rikki_ View Post
A most interesting color is it not?
ummmm... errr... aaah... I am struggling to find something besides interesting to describe the colour. (and still be nice)

Another resource you might want to have a poke around, go to youtube and search the word "Lunmad", It is Plewsy's youtube channel, and subscribe to it, he has a lot of excellent info on there.

One man's 0.02c worth, do it back up to the '70s bobber look, but for the love of all things good, change the colour!

EDIT: - If I could make one recommendation for the bike, investigate putting an external oil filter kit on it, with a spin on spin off filter. The engine will "love you long time" for it.
There are several threads covering different types of filters, and where to mount them, either so they are hidden, and/or easily accessible, besides, a lot of the members have fitted one to their own bike, so there is no end of info for it.

Ummm, not sure if this link will work for you, but try it. Oil filters are sort of a popular topic...

Last edited by dogtired; 11-12-2010 at 12:34 AM. Reason: so I can put really small writing here.
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post #3 of 41 (permalink) Old 11-12-2010, 12:49 AM
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That color...

Of course photographs can't accurately convey the true color, so I'm not sure if this is true, but to me, that color looks like the Bianchi bicycle color they call 'Celeste' - and here's the interesting part... Bianchi says Celeste is the only color blessed by the Pope - top that !

Would I be rockin' it? um... not so much - I'm all red - but the paint store has millions of colors for a reason.

All that aside... Fantastic project! Hope you have a blast making that 'Tro-ville' just what you want it to be.

The folks on this forum took me from a box of rust to a screamin' head-turner. This is the place.


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post #4 of 41 (permalink) Old 11-12-2010, 04:36 AM Thread Starter
Grand Prix 125
Main Motorcycle: Dyna Street Bob 09
Join Date: Nov 2010
Location: Helsingborg, Sweden
Posts: 33
Other Motorcycle: Triumph Trophy 1967
Haha! The colour is hideous, but who am i to criticise the Pope... Iīm not sure what to do about the colour, the paint around the decals are giving up, so its gonna get paint anyway, the easy way out would be black, but i already have a black bike. Iīm thinking about three directions:
1: Go with the Pope. You probably have to had seen my uncle on this thing, with his dirty sheepwool-on-the-outside-jacket, T-shirt that says "Milk is better then Heroin" to even consider this option.
2: Painting the bike in originalcolours from 1967, i think it would be fun and a little different.
3: Going crazy with hippie. Flowers, a lot of flowers.

I already stumbled upon "Lunmad", first impression: "a pot of gold!".

Right now im building an engine stand, first things first.

The link didnīt work, but i understand it that many people are putting Norton oilfilters on there triumphs. Dream scenario would be a clean sludgetrap and a real filter fitted.

Itīs strange, when i picture the bike, i always think "Basket with wheels" but each time i go out and look at it im surprised how decent it looks.

The "big" thing iīm contemplating right now is whats up with the top, more specifik the bolts beneath the oil-line to the rockerboxes. The mechanic in me says "inspectionholes" but there already are up front, maybe an axle?. and iīve only found a few pictures on bikes with this setup. Of course, i could unscrew them and find out, but the main reason is to know what partsbook i should be looking in concerning the top. Anyone have a clue to what year itīs from?
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post #5 of 41 (permalink) Old 11-12-2010, 05:59 AM
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The only difference between Bonneville and Tiger is that the Bonnie had the Twin carb head. It's not possible to convert a head, you need to swap. So a lot of Tiger owners "souped up" a Tiger by adding a Bonnie head. To be honest (I've got a Bonnie) there's no real difference and the Tiger is apparently easier to set up due to the single carb.

I'd stick with the engine the way that it is unless some disaster comes to light.

I'm not sure what you mean by the bolts beneath the oil line to the rockerboxes.?

The engine has two pairs of valves, front and back, you can access the valve gear by unscrewing the round covers that have X slots on them at the front and rear.

The oil feed to the rockers terminates in a pair of Banjos held on by domed nuts.

You might find this useful to visualise the engine?

I'd get yourself a paper version of this manual.(s)

I like to keep a dirty workshop one and a clean one beside my computer so I can source parts.



Part numbers changed so you'll maybe need to conver them to search the web


Last edited by DAVE M; 11-12-2010 at 06:06 AM.
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post #6 of 41 (permalink) Old 11-12-2010, 07:04 AM Thread Starter
Grand Prix 125
Main Motorcycle: Dyna Street Bob 09
Join Date: Nov 2010
Location: Helsingborg, Sweden
Posts: 33
Other Motorcycle: Triumph Trophy 1967
When you say "stick with the engine the way that it is unless some disaster comes to light"
are you refeering to not tearing it all apart untill it becomes a problem?

This is probably a no-brainer, but if you look at the banjos, there are bolts just about 1 cm down to the right/left, where on other tops i see only fins... (if you look at the engine picture you posted it does not have these bolts.)

The manual is my bedside read at the moment.

Thanks for alerting me on the changed partsnumbers :=)
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post #7 of 41 (permalink) Old 11-12-2010, 07:25 AM
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What I meant was that as it's a chop, I wouldn't worry about trying to return the engine to Tiger specs - head wise.

I don't know what those bolts are either! but look here http://www.classicbike.biz/Triumph/R...hop_Manual.pdf
but I don't see a mention of them in the manual
and they're just visible in the photos. You've a later head than the engine.

I guess it's getting cold where you are and the bike won't be ridden. Given that it's an unknown, I'd be tempted to check the sludge trap. Especially given the old owner's distate for oil changes.
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post #8 of 41 (permalink) Old 11-12-2010, 12:48 PM
Main Motorcycle: 70 T120R Bonnie
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Yeh wow! Never seen that before. Pull a cap and see whats inside.

"Thanks to denial, I'm immortal" -Phillip J. Fry
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post #9 of 41 (permalink) Old 11-12-2010, 05:12 PM
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Hi Rikki,
The bolts on your rocker boxes are to access the tappets (lifters) easier. They were for 1971 only, I would guess that someone in the past fitted the head and rocker boxes from a 71.
If you remove them, make sure to use some RTV silicon sealant on them, they have a habit of vibrating loose and they also leak.

I've no idea about the forks, but you might be able to get the tubes cut down to size to save some cash.

I think it looks like a great bike (in a groovy 70s kind of way )

Good luck with your new toy

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post #10 of 41 (permalink) Old 11-13-2010, 05:05 AM Thread Starter
Grand Prix 125
Main Motorcycle: Dyna Street Bob 09
Join Date: Nov 2010
Location: Helsingborg, Sweden
Posts: 33
Other Motorcycle: Triumph Trophy 1967
Dave: Yes, iīm not going to change the heads, one or two carbs are not an issue IMO. Yep, itīs about 10° Celcius at the moment, and sometime soon itīs going to kick in for real. So lots of time to rebuild, anything that makes me sleep better. And no pressure to get it together for summer, since itīs bike #2. :=)

The heads got me scratching my head :=) So itīs a one year only thing, i like that. Thank you for clearing that out Webby :=)
I think im going to disassemble the fork and measure the gaskets if i donīt find out what it is. Tomorrow i will post a picture of the bike when itīs clean.
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