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3Ta Trials Speedo


heavywrecker
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I'm in need of a speedo for my 3ta. Not interested in cheap Indian made copies.

What I have is the square type speedo drive with the cable drive at the top looking at the rear hub from the right.

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1961 would have had a tick-tick -tick chrono, originals are terrible price!

Any ideas on a little trials type? ratio would be 2:1

Cheers

Bill

Edited by heavywrecker
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I don't think you are going to find much help on here.most folk using Trumpy twins in P65 trials try to lose as much weight as possible,so either don't use a speedo for closed to club events or would use a mountain bike wireless one for road based events like the Sammy Miller series.

Jumbles like Kempton park are probably your best bet.

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  • 2 weeks later...

Thanks.

Tried a MTB wireless one, no good, waste of money, the electrics on the Trumpet interfere too much , works fine on my MTB though!

Back to the drawing boaed, as I haven't exactly been inundated with answers LOL !

Edited by heavywrecker
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Thanks.

Tried a MTB wireless one, no good, waste of money, the electrics on the Trumpet interfere too much , works fine on my MTB though!

Back to the drawing boaed, as I haven't exactly been inundated with answers LOL !

Have you tried one with a wire yet? Works fine on my Bultaco (and on my modern bikes)

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Thanks.

Tried a MTB wireless one, no good, waste of money, the electrics on the Trumpet interfere too much , works fine on my MTB though!

Back to the drawing boaed, as I haven't exactly been inundated with answers LOL !

So do you think its any better on my AJS or Ariel ! On my Ajay it reads 3 mph however close to the 25mph max,(My guess at speed,its where my eyes blur with the vibration...) I get. A Lucas racing mag and copper plug lead were not designed with wimpy wi-fi in mind. It does work OK with no engine if I spin the front wheel or roll it down the yard.My feeling is that in the eyes of the law I have made a reasonable effort.(Plus there aren't many speed limits I could break even if I tried !

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