Done some work

Questions regarding the DR800

Done some work

Postby Mr.Z » Mon Feb 05, 2018 7:56 pm

Other cylinder with manual spanner and first over size piston and higher compression, different air intake, old cable and CDI set up.

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36mm carbs on the right
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Re: Done some work

Postby nug » Mon Feb 05, 2018 9:41 pm

Interesting tension mod. Is this something you thought of or has it been done before?
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Re: Done some work

Postby Mr.Z » Mon Feb 05, 2018 10:40 pm

Has been done before and there are several Dutch riding with it, a Super motard single competition rider makes them like that for us here in Holland.
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Re: Done some work

Postby nug » Mon Feb 05, 2018 11:03 pm

Very simple and no doubt works well but the overall length to thread engagement in the cylinder is bit excessive for my liking.
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Re: Done some work

Postby Mr.Z » Mon Feb 05, 2018 11:13 pm

what do you mean?
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Re: Done some work

Postby nug » Mon Feb 05, 2018 11:59 pm

Is the washer a "stop" to prevent the threaded rod winding all the way out? Without me being able to see the working position of the tensioner when the motor is assembled it is difficult to see how much rod is unsupported. It looks pretty long although you must need to trim the external section down once assembled. It just seems very long which with the vibration combined with the leverage could result in the rod failing at the point where it enters the cylinder. I imagine it works well but I am not sure it would be anymore reliable than the factory setup over the same mileage.
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Re: Done some work

Postby Mr.Z » Tue Feb 06, 2018 8:06 pm

The welded on ring is indeed a stop, it's the just short enough to get the camshaft in and out it's sprocket and to adjust the camshaft chain when assembling. So it's just the length needed to do it's work.
The bold is a M10 with 1.5 tread and a think that's strong enough, had a hessler spring in before but that one is not much better than the original.
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Re: Done some work

Postby nug » Wed Feb 07, 2018 7:20 pm

Aah I see. It was hard to tell if it was M8 or M10 in the pictures. Should be plenty strong then :tup:
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