Has It Ever Been Done? (Bobber Engine) - Triumph Bobber Forum
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post #1 of 7 (permalink) Old 04-01-2019, 02:41 PM Thread Starter
Roy
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Question Has It Ever Been Done? (Bobber Engine)

Hi Gents,

Let me preface this with the fact that I'm no mechanic and have absolutely no idea what I'm talking about.

But the recent thread on the inability to fit a kit start to a Bobber, along with the issues around all the technology/electronics on these modern bikes got me thinking.

The engine in the Bobber is really wonderful in my view. Has anyone ever pulled out the engine, dumped the fuel injection along with all the electronics and built a custom bike 'old school' just using the engine with carbs and minimal electronics with none of the computer gizmos?

No idea if it's been done or even if it's possible but would love to know as I think it's a cracking idea.

Cheerio,

Roy

Last edited by Roy; 04-01-2019 at 02:44 PM.
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post #2 of 7 (permalink) Old 04-01-2019, 03:50 PM
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Buy an old bike wil be more easy... Why not ?
I have no time for this, but is my dream to build my own bike.
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post #3 of 7 (permalink) Old 04-01-2019, 04:48 PM
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I have seen this done on one of the new Nortons but it is a major undertaking. You could probably buy a vintage Triumph for less money and far less headache! I know some of what it takes and I would never attempt it. You would step down in performance and reliability also!
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post #4 of 7 (permalink) Old 04-07-2019, 09:03 AM
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The Bobber is a modern engineered "retro" bike. Translation: "It provides the aesthetics of an old school motorcycle, while providing reliability, smooth performance, technology, safety, etc."



I agree with others, money would be better spent searching for a real, old school headache... er, I mean authentic Bobber. That way you will have one to ride, and the other tinker with.
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post #5 of 7 (permalink) Old 04-07-2019, 10:44 AM Thread Starter
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Thanks for all your comments gents,

Not something I would undertake but was curious if such a think had been attempted.

Cheerio,

Roy
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post #6 of 7 (permalink) Old 04-10-2019, 03:26 PM
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Roy, that was part of the appeal of the Royal Enfield. Although it had a front disc brake, fuel injection and a few other concessions to this century, it had all the low performance tech of the 1950s. Terrible suspension, bicycle sized tires. Some people did swap back to a carb. Too much work to give worse performance. My dad used to say “nostalgia ain’t what it used to be”

A modern 1200HT motor will only be worse with antique tech attached. Like others have said, if you like old tech, buy an old bike. As the Royal Enfield t-shirts said, making mechanics out of motorcyclists since 1901.
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post #7 of 7 (permalink) Old 04-11-2019, 08:29 AM
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You'd probably have severe problems inside the engine, because it's modern and runs at a high 10:1 compression ratio... Carbs don't fuel that well, and as for points based ignition... Well....

Re kick starts, the carb Indian Enfields have a charm all of their own, but they have a decompressor to enable you to turn the engine over to get to the right point in the stroke to give it a swinging boot...

Larry


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