New ES250 Trophy Project!

ETZ(including Kanuni), ETS, ES, TS, IFA-RT, BK, Saxon,

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Re: New ES250 Trophy Project!

Postby Puffs » Wed Dec 07, 2022 11:59 am

Good going with your speedo! By now you must indeed get quite good at working on that counter.

And yes, I can imagine metal fragments could do that, both the noise, variations in the speed indication, and too high speed - but it raises the question: where are they from?
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Re: New ES250 Trophy Project!

Postby Blurredman » Thu Dec 08, 2022 4:02 am

I'm not quite sure where the metal fragments came from- it's a possibility that they are the result of the worm and shaft gears (that drive the mileage drum) that ground into eachother when the counter drum was seized and perhaps the fragments slowly migrated and got attracted by the magnet over time. Though I'm pretty sure I cleaned the gears up when I had the unit apart the last two times to rectify the drum seizure. But I didn't open up the whole unit back then. I couldn't see any scores within the (magnetically driven-that the needle is connected to) cup that surrounds the magnet so I don't think they're from there. Though the metal fragments were dark though as opposed to a brass so not entirely sure their source is the gears anyway.

But I am very happy I didn't have to mess with the needle to take apart the unit....! But I don't think some of the metal tabs (which are to be bent to lock certain things in position and require unbending to take the unit apart) will hold up to too much bending if this is a thing I have to do often. But it's true- I have that spare TS speedo if in the future this Trophy speedo still continues to be an issue. I think i'll leave it as it is for now with the top glass surround uncrimped for about 1,000 miles or so and then decide whether or not to crimp it back around fully (with a bit of goo to prevent ingress of water) at that point.
1973 MZ ES250/2 - 17,000 miles
1979 Suzuki TS185ER - 10,000 miles
1981 Honda CX500B - 91,000 miles
1987 MZ ETZ300 - 39,000 miles
1989 MZ ETZ251 - 50,000 miles

ftp://blurredmanswebsite.ddns.net/Vehicle_Documents/MZ_Documents/
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Re: New ES250 Trophy Project!

Postby Blurredman » Sun Oct 27, 2024 7:53 pm

I fitted some aftermarket (and unfortunately mk1 instead of the proper mk2 type for the Trophy, but they were free....) indicators.

Image

I haven't used the bike yet so I dunno how much I like them, but if not I can always remove them. The bike came with a Yamaha relay which was actually 8w x 2 + 3w, so instead of 21w bulbs (which were slow and dim) I managed to dig out some 15w festoon bulbs instead so they're nice and bright and quick to light even at idle.
1973 MZ ES250/2 - 17,000 miles
1979 Suzuki TS185ER - 10,000 miles
1981 Honda CX500B - 91,000 miles
1987 MZ ETZ300 - 39,000 miles
1989 MZ ETZ251 - 50,000 miles

ftp://blurredmanswebsite.ddns.net/Vehicle_Documents/MZ_Documents/
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Location: South Wales

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