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Old 07-29-2008, 09:46 AM   #1
Greaser_Mike
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Default Blast from the past: Triumph Desert Racer

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Old 07-29-2008, 10:09 AM   #2
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Default Re: Blast from the past: Triumph Desert Racer

Holy crap!!!! That thing is amazing! Any idea what year it was built, or by who, or any of that?
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Old 07-29-2008, 10:16 AM   #3
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Default Re: Blast from the past: Triumph Desert Racer

wow! thanks Mike! looks like it's somewhat modern, how recently was it last raced?
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Old 07-29-2008, 10:18 AM   #4
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Default Re: Blast from the past: Triumph Desert Racer

Bike is great, but those are some seriously hogged out head fins! Shit!
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Old 07-29-2008, 10:20 AM   #5
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Default Re: Blast from the past: Triumph Desert Racer

Someone really loved that bike. Amazing detail work.
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Old 07-29-2008, 10:21 AM   #6
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Default Re: Blast from the past: Triumph Desert Racer

Looks like the plastic and suspension is late 70's - early 80's motocross stuff. It's unique, that's fer sure. Neato.

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Old 07-29-2008, 10:42 AM   #7
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Default Re: Blast from the past: Triumph Desert Racer

Wow! Any idea of the history?
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Old 07-29-2008, 11:05 AM   #8
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Default Re: Blast from the past: Triumph Desert Racer

How the hell did it end up in NYC? AND BE USED, as it looks like it is.......

That thing is awesome. Shit, I love that tank. And the drilling work, no hack job....

Which could lead to an interesting discussion - Advantages to cooling fin drilling.....

If I had a thermo-spectrometer, I would actually like to see if the drilled fins create a heat dispersion problem as many claim they do (most with no personal experience)? I have my own theory.
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Old 07-29-2008, 12:00 PM   #9
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Default Re: Blast from the past: Triumph Desert Racer

awesome. what a great street weapon that'd make too!

the frame looks like standard late 60's Triumph (front section) with mods to the rear... ? I have a feeling that front end might be Maico..? .. only because a friend of a friend had one and I remember it was all red and gold magnesium hubs...?

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Old 07-29-2008, 12:41 PM   #10
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Default Re: Blast from the past: Triumph Desert Racer

[quote=ol_scratch;371814]

Which could lead to an interesting discussion - Advantages to cooling fin drilling.....


From what I've been told drilling fins reduces the surface area for heat dispersion (logical) and that the holes "interupt" the flow of the heat. Again logical.

That is one very handsome machine. With that much engraving it makes you wonder was it a desert racer that whos owner was a talented engraver or was it a show bike turned into a desert racer?
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Old 07-29-2008, 01:39 PM   #11
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Default Re: Blast from the past: Triumph Desert Racer

Ahhh, yes the surface area question. Indeed increased surface does increase the ability to conduct the heat away and disperse the heat. BUT there is a point that two things come into play - one being the length of fins from source, and two being the proximity of the fins both being relation to each other. While drilling holes does decrease the surface area, it will increase air flow (if done properly that is) as well. Obviously there is line that can be crossed, and its a state of moderation. Its just something that I think would be a good experiment sometime.

I guess the real question as well is obviously drilling reduces weight, but at which point is the deference of cooling outweigh the advantage of decreased weight.
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Old 07-29-2008, 04:20 PM   #12
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Default Re: Blast from the past: Triumph Desert Racer

that bike was seriously loved and raced. looks like it ended up as a moto-crosser.

the engraving is a great touch.
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Old 07-29-2008, 04:43 PM   #13
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Talking Re: Blast from the past: Triumph Desert Racer

Quote:
Originally Posted by ol_scratch View Post

With that much engraving it makes you wonder was it a desert racer that whos owner was a talented engraver or was it a show bike turned into a desert racer?
Or after they were finished drilling every possible surface ....did they say "If this thing was a mouse fart lighter, we can get an extra .003mph" Lets engrave the cases and shave off another .00012 of a ounce of metal dust. HmMmMmMm those old desert racer kooks were onto something!
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Old 07-29-2008, 04:54 PM   #14
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Default Re: Blast from the past: Triumph Desert Racer

Either Way it's still pretty sick..... That would be a lot of fun.
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Old 07-29-2008, 09:44 PM   #15
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Default Re: Blast from the past: Triumph Desert Racer

Does it whistle going down the road.....
You know you guys all thought that!
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Old 07-29-2008, 09:57 PM   #16
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Default Re: Blast from the past: Triumph Desert Racer

Another function of the fins is to guide cooling air around the cylinder itself. Along with the reduction in surface area, I'd think the disturbance the holes would create in the airflow around the fin would be a lot less beneficial than removing the few ounces of weight that was drilled out. For airplanes, on which weight reduction means everything, there are definite limits to the amount of cooling fin that can be missing from each jug and still be airworthy. That, to me anyhow, says it all.

But it still looks neat!!!!!
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