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Re: 1973 Tr7rv won't start [Re: Mfnjdp] #771052
04/14/19 10:12 pm
04/14/19 10:12 pm
Joined: Sep 2013
Posts: 1,953
Pacific northwest
Q
quinten Online confused
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quinten  Online Confused
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Q

Joined: Sep 2013
Posts: 1,953
Pacific northwest

The Boyer plate has 2 coils 180 degrees apart ... it a simple part
These 2 small coils are then wired in series ... through the circuit board
If you want to probe a bit ,
The coils and their connections can be tested
Individually ... or as a series connect .
( each individual coil should ohms at half the total )

Sometimes , a good eye and a bit of soldering is all it takes to fix .

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Re: 1973 Tr7rv won't start [Re: Mfnjdp] #771082
04/15/19 2:51 am
04/15/19 2:51 am
Joined: Oct 2008
Posts: 5,421
Crossville, TN
DavidP Online content

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DavidP  Online Content

BritBike Forum member

Joined: Oct 2008
Posts: 5,421
Crossville, TN
You might try removing the plate and check it again. Maybe the connection to the coils is shorted on the back?
Did you measure it while disconnected from the amplifier?


Stepping on others doesn't make you stand tall.

71 A65L "Zelda"
92 BMW K100rs "Gustav"
72 T120V cafe project "Mr. Jim"
72 T150V "Wotan"
Re: 1973 Tr7rv won't start [Re: Mfnjdp] #771091
04/15/19 5:15 am
04/15/19 5:15 am
Joined: Jan 2019
Posts: 25
Phoenix Arizona
M
Mfnjdp Offline OP
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Mfnjdp  Offline OP
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M

Joined: Jan 2019
Posts: 25
Phoenix Arizona
I removed the rotor and tested it by itself and it tested good. Checked my wires coming to it and had a break. Replaced both wires and it fired up on the first kit.

Thank you guys for your advice. I have been trying to put this bike together for almost 3 years and now I have it running. Still need to tune it up but it runs. Again thank you very much for your help

Re: 1973 Tr7rv won't start [Re: Mfnjdp] #771093
04/15/19 6:32 am
04/15/19 6:32 am
Joined: Jan 2019
Posts: 25
Phoenix Arizona
M
Mfnjdp Offline OP
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Mfnjdp  Offline OP
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M

Joined: Jan 2019
Posts: 25
Phoenix Arizona
I would post a short video but I can't seem to figure it out. It smokes like crazy. I thought it was just burning off excess oil from assembly when I oiled every part. But it doesn't seem to be getting better. Could it be valves? The smoke is gray.

Re: 1973 Tr7rv won't start [Re: Mfnjdp] #771095
04/15/19 6:43 am
04/15/19 6:43 am
Joined: Jan 2019
Posts: 25
Phoenix Arizona
M
Mfnjdp Offline OP
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Mfnjdp  Offline OP
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M

Joined: Jan 2019
Posts: 25
Phoenix Arizona
Btw. If you guys are ever in Phx I owe you a beer 🍻. I would have never figured it out with out your suggestions.

Re: 1973 Tr7rv won't start [Re: Mfnjdp] #771107
04/15/19 10:44 am
04/15/19 10:44 am
Joined: Aug 2001
Posts: 7,530
Vermont
Jon W. Whitley Online content

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Jon W. Whitley  Online Content

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Joined: Aug 2001
Posts: 7,530
Vermont
Originally Posted by Mfnjdp
Is that when the right hand cylinder is all the way up and valves are closed?


Yes, both intake and exhaust on that particular cylinder.

Anyway, congratulations ! As for the smoking, you may have a fair amount but unless you have put a few miles on it just being static won't suffice by itself to clear it up...in my experience anyway.


Jon W.


1957 6T Thunderbird 650
1968 T100R Daytona 500
1971 TR6R Tiger 650
1970 BSA A65F 650
1955 Tiger 100 - Project

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