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Makotosun

Backfired like a shotgun

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Replied by MarkT on topic Backfired like a shotgun

Here's a video showing aircraft timing tool and analog meter methods of determining points opening...  just shows the beep/light with aircraft tool and the needle swing with meter.



Link to inexpensive analog meter with Rx1 scale if you want to go that route...  disclaimer, I have an old Simpson meter (see video) and haven't tried that ebay meter but every analog ohmmeter with Rx1 scale I've ever used has worked.

Ebay link to meter
1963 YG1-T, 1965 MG1-T, Allstate 250, 1970 CT1b, 1971 R5, 1973 AT3MX, 1974 TS400L, 1975 RD350, 1976 DT175C, 1976 Husqvarna 250CR, 1981 DT175G, 1988 DT50, 1990 "Super" DT50, 1991 RT180, 2017 XT250
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24 Jul 2022 13:24 #21

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Replied by Ht1kid on topic Backfired like a shotgun

I have always used a test light mine is over 50 yrs old vey simple to hook up use the black wire from your stator harness. That’s how we did it at Butler’s 
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24 Jul 2022 14:11 #22

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Replied by Ht1kid on topic Backfired like a shotgun

 
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24 Jul 2022 14:15 #23

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Replied by Ht1kid on topic Backfired like a shotgun

Great video MarkT……
24 Jul 2022 14:19 #24

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Replied by Yamaha73CT3 on topic Backfired like a shotgun

I just ordered the same buzz box as the video from Amazon. It comes in Wednesday, I’ll let you know how it goes. I appreciate the help Mark
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24 Jul 2022 16:41 #25

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Replied by Yamaha73CT3 on topic Backfired like a shotgun

Just wanted to thank you guys for your help. The buzz box worked great and the timing is set at 2.0mm BTDC and the breaker contacts open to .014 (but who cares about that) haha It runs mint! No backfires! The only thing the bike needs now is an exhaust baffle because it’s a bit loud. Thanks again!
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27 Jul 2022 18:03 #26

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Replied by MarkT on topic Backfired like a shotgun

Congrats!

P.S.  2mm BTDC?  Thought spec was 1.8mm?  Memory might be slipping. 
1963 YG1-T, 1965 MG1-T, Allstate 250, 1970 CT1b, 1971 R5, 1973 AT3MX, 1974 TS400L, 1975 RD350, 1976 DT175C, 1976 Husqvarna 250CR, 1981 DT175G, 1988 DT50, 1990 "Super" DT50, 1991 RT180, 2017 XT250
27 Jul 2022 18:53 #27

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Replied by RT325 on topic Backfired like a shotgun

Now children, let's not argue about 8thou of piston travel difference [is that right?] untill it melts down!!. Mind you at that rate the point would be at 12thou to get it spot on. Guessing of course. Have a good day.
27 Jul 2022 20:23 #28

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