Melted Breaker Points

authenticnovelty

XS650 Enthusiast
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Brooklyn, NY
It’s been pretty hot in New York City the past week or so. Unexpectedly I had both of my breaker points melt in traffic yesterday morning. Doing about 70mph on the highway in New Jersey for an hour before hitting stop and go rushhour traffic for 45 minutes in direct 90 degree sunlight. Very limited lane splitting options. Finally 3 blocks from the tunnel into the city, the engine winds down and dies. Full tank of fuel, no blown fuses, all systems check out. When i removed my points cover to begin checking my igniton system, the spindles and plastic parts looked like silly putty. As i try to snap the points open and closed, they just stay where i let go of them.

I just bought new breaker points from Mike’s about a month and a half ago and kept the originals, so i luckily was able to reinstall the old OEM and get the bike back home.

Has anybody else had this experience? I’d like to guage how likely this incident is to reoccur under these conditions. I may not be so lucky to be so close to home or have spare points next time.

Is this purely related to the heat and idling or is there a chance that something shorted? The ignition coils/condensor/breaker wires are about 6 months old or less and seem fine. No other signs of melting or wire damage could be found at this time.

Is this just poor quality points? The insulators and bushings on the original points are clearly made out of a different material.
 
I know... :unsure: I assumed worst case would be the springs would be weaker or surfaces would wear more quickly. I never considered the possibility of them liquifying! This is also part of why i wanted to check around to warn/question that it’s just related to buying from Mike’s vs an actual bigger electrical problem.
 

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Dang! That's crazy. Seems like Mike's is quickly becoming a not so reliable source for electronics? Or has it been like that for a while?
 
Looks like finding good replacement points for these bikes is going to become a problem. Mike's used to sell nice ones, made in Japan from the original Yamaha supplier. Looks like they found a cheaper source but, of course they didn't lower their asking price. In fact, I think it's gone up, lol.

I think your best bet would be to search out some N.O.S. originals on eBay. But be aware that 2 different points sets were used on these bikes. The early ones have a smaller mounting slot in a slightly different location and won't mount on your later points plate. Their part number ends in 10 .....

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You'll need the later type with the larger mounting slot. Their part number ends in 11 .....

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I know... :unsure: I assumed worst case would be the springs would be weaker or surfaces would wear more quickly. I never considered the possibility of them liquifying! This is also part of why i wanted to check around to warn/question that it’s just related to buying from Mike’s vs an actual bigger electrical problem.

Wow! I wouldn’t have thought that was possible!
 
In all my years of wrenching, I don't recall seeing points melt. There's certain compounds of nylon that'll go upward of 500F before melting... well below the operating temperature of these engines.

Here's a link to the review thread of Mikes parts.
I'd suggest you post this there. And I'd certainly demand a refund from them. Unless we hold them accountable, they'll continue pushing this unusable crap on us.

Hey @Techman .... care to chime in here?
 
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That Daichi brand that K&L is selling is what MikesXS used to sell. Looking on eBay, I see there is another brand, K&S, very prevalent and made in China. Bet that's what Mike's is selling now.
 
FEW ( Futaba electric ) and Diiachi are both made in Japan and are good.
No other japanese makes as almost every bike dropped point ignitions by 1978 ( 40 years ago )
Never seen a set melt. The original mikes used Japanese points and condensers.
 
Therein lays the problem........ Mike's. They should change their name to CCK (Cheap Chinese Knockoffs)
That's not at all deserved. They have some bad parts, and will apparently (at least several owners ago) keep on selling them after it's known. But the majority of their stuff is entirely satisfactory, and in some cases perhaps the best you can get. If you're nervous about it, look for "Made in Japan" in the description of the item, the presence of which has always been an indicator of quality in my experience with them (over ten years).
 
Within the context of this thread, it is very much deserved and earned. As well as within other cases (Pamco ring a bell?)
Read what I quoted to see you're not talking about the "within context of this thread". You're talking about any bad part you can think of, and perhaps a good one, I don't know. Like I said, many of their parts are the best you can get, and many are the only ones you can get.
 
+1, Solo, can't go wrong with K&L. Mike Lalonde was the head honcho of K&L's Canadian operation, and sold a lot of K&L parts in the early days of Mike's XS. That was back when he mailed out paper catalogues and took orders by phone. Then Lalonde went to online only business, severed direct contact with customers, discovered China, and substituted junk for K&L's quality parts. Two sets of successor owners have promised improvement but followed the same business model.

Authenticnovelty, congrats on the foresight to pack spares and the knowhow to install 'em at roadside and roll!
 
One of the problems with Mike's is that when they change a part, they often don't change the description. A perfect example is their current Commando muffler. It's still described as the dyno tuned Heiden muffler but it isn't anymore. It's a cheapo EMGO copy.
 
FEW ( Futaba electric )

FWIW - Futaba is a very high-end Japanese electronics manufacturer. I have used their R/C equipment in my model aircraft for more than 40 years and it is excellent. It may very well be that Futaba was the original supplier to Yamaha for their Kettering breaker points.

Pete
 
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:smoke: :popcorn:
I always love it when people tell me what I meant. Next thing you know I'll be talking about clutch hubs in this thread since, apparently, context means nothing.
I have no idea what you meant, and it doesn't really matter. What you said is very clear though :)
 
One of the problems with Mike's is that when they change a part, they often don't change the description. A perfect example is their current Commando muffler. It's still described as the dyno tuned Heiden muffler but it isn't anymore. It's a cheapo EMGO copy.
I searched their site for "commando" and got three mufflers, exhaust systems actually, and none of them mention any manufacturer. If "Commando" means it's a Heiden, Mike's calls his "Commando type".
 
They clearly state, and I quote ... "Dyno tuned design by Heiden Tuning .....", which they are not anymore. The only thing that is the same is the outer shell. They look like the old ones but the internal baffling is all different now.

https://www.mikesxs.net/yamaha-xs650-muffler-26-commando-type.html

Yes, they call them Commando type or style. We just call them "Commando" for short. Whatever you call them, they're a far cry from what they used to be.
 
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