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The TTR250 FAQ web pages -> TTR250 -> Modifications -> Change manual fuel tap to vacuum tap with sensor
Post Info TOPIC: Change manual fuel tap to vacuum tap with sensor
Mateja


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Change manual fuel tap to vacuum tap with sensor
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0E691FD6-7839-4663-84F0-88CE171C96DB.jpeg

Hey guys!

What I dont really like about the TTR is that it has manual fuel tap without any fuel gauge, not even a low fuel sensor.

Today I was looking for different fuel taps and I found the one on the picture.

I think it would be pretty easy to design an adapter to make it fit the TTR.

It has a fuel level sensor which could be a useful upgrade for the bike.

Do you think this idea could work? Would you change the manual tap for this one?

My biggest concern is that it needs a vacuum line, which is “active” when the bike is running or getting started. Does the bike have a line like this?

What do you think about the whole idea?



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robs


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Love the idea of having a fuel gauge, although I'm afraid I have no idea about any of the stuff you've mentioned. Will definitely follow this with interest though!

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TTRfan


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Welcome to the forum!

A great idea but a lot of effort to fit.

Presumably an adapter would need to be made to fit the tap to the tank.

I am not aware of there being a vacuum point on the carb although I guess it wouldn't be difficult to drill and tap the carb body to fit one.

TBH, I am quite happy with the existing tap arrangement with its reserve capability. Plenty of warning to fill up

Brian



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Mateja


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Thank you for your response ;)

I’m pretty happy you both generally like the idea, but probably Brian is right, without the existing vacuum line it isn’t really worth the effort. 

Although Im gonna be still thinking about a solution to a fuel gauge, I am eager to have one.

But an other problem that came to my mind is that because of the shape of tank there is quite a lot of fuel that gets trapped in the other side of the tank since theres no fuel tap. Does this happen on purpose, or just nobody has found a way to use that fuel?



-- Edited by Mateja on Monday 7th of October 2019 09:45:50 AM



-- Edited by Mateja on Monday 7th of October 2019 09:48:09 AM

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mossproof


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Welcome to the forum!

The only solution to the trapped fuel is stop now and then and lean the bike over to slosh a bit across the divide! Acerbis tank would solve it because it has a tap/outlet both sides, and it would also solve the fuel level problem if you bought a translucent version!

You might be able to find a tap/gauge sender unit with the correct fitting - my Husky TE610e has a sender unit combined with the tap (does not require a vacuum to operate), but I think the bolt holes are different centres. I will check, but as the bike is a bit of an oddball (hardly any were built, and each one was different when it left the factory!) you will struggle to find one anyway. On mine the wires have been cut and I have not found even a picture of it on the 'net, let alone one for sale! I too like the idea, but never having had a gauge, I got used to noticing the odometer readings to work out when the next fill was due. I now run a Raid tank which is good for 200 miles anyway. Plenty!

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Mateja


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Than I guess the trapped stays the 2nd reserve on the bike :)

I didnt find any fuel tap that has gauge. Since the best solution on would be if I didnt have to modify the tank to fit a gauge, I am thinking about somehow modifying the original tap to add a gauge. It is much cheaper to buy a new tap than a tank.

Using the odometer for fuel gauge is a pretty god idea, but the real reason I miss fuel gauge is that there’s one more space on the “box” next to the speedo that has the high neutral lamp, etc. I would be full with the fourth fuel lamp.



-- Edited by Mateja on Wednesday 9th of October 2019 08:13:49 AM

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JOHNYBOY


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NO WAY WOULD I SWOP MINE FOR THE ORIGINAL ITS TROUBLE FREE

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