Chain jumping? - Page 4

Ariel Red Hunter · 06-18-2018, 03:02 PM

Quote:

Originally Posted by ChipToothy

Ok too loose again. I loosened it this last time because while sitting on the bike I reached down and there was only 1-2 mm of play. From what I understand there should be 25 mm?

Right!!!

...ARH

ChipToothy · 06-18-2018, 04:56 PM

Ok thanks again!

I have “lubed” the chain with 10w40 once a week since getting the bike. I paint it on heavy with a brush, let it soak about an hour then give it a run through a rag to pick up any grit and excess oil. I’m hoping by August to switch to the Oring system. The 520 style I seen it called on here somewhere.

ChipToothy · 06-18-2018, 05:35 PM

I would put the tightest point of chain clearance at 1-2mm. I see some scratches on the other guard and sprocket clamp. Chain reads 128H and sprocket are 17X46. Not much wiggle room in there at all.

timcosby · 06-18-2018, 05:39 PM

i have a 17 tooth on and it jumped off and destroyed the cover but not the engine case. i adjust mine to where it has about 1/2" to 3/4" play when it is sitting on the jiffy stand and have never had a problem and no i didnt measure just tickled it with my toe. you all are thinking too much!

Sullybiker · 06-18-2018, 09:23 PM

I had the chain jump the rear sprocket on my TT last December. It was my fault; I was running it too loose. I'm of the loose-is-better school, and I'd just cleaned and oiled it and eyeballed the slack; going over a bump the chain hopped off and rested between the sprocket and swingarm. Thankfully it didn't jam. Luckily it was only a couple of miles from home so I just drove my tools out and stand out and put it back on. It's amazing how fast you can do it when you're in a hurry...

The thing is, I didn't think it was that loose; I just thought the manual spec of 15mm was a bit tight so I left a bit of play in it.

timcosby · 06-19-2018, 01:06 PM

if chain comes off rear just put it on top of the sprocket maybe 3 or 4 teeth and push bike backwards ...chain on no tools required.

06-18-2018, 05:39 PM	#49
timcosby Join Date: Nov 2016 Location: robertsdale alabama usa Posts: 1,007	i have a 17 tooth on and it jumped off and destroyed the cover but not the engine case. i adjust mine to where it has about 1/2" to 3/4" play when it is sitting on the jiffy stand and have never had a problem and no i didnt measure just tickled it with my toe. you all are thinking too much! __________________ 1991 harley heritage softail classic 2016 hawk kaw h1 400 tripple 13' long chopper in progress 2009 johnny pag bar hog 2004 hd electra glide ultra classic shriner edition 1997 harley davidson 1200 sportster 1972 harley davidson amf sx250
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06-19-2018, 01:06 PM	#51
timcosby Join Date: Nov 2016 Location: robertsdale alabama usa Posts: 1,007	if chain comes off rear just put it on top of the sprocket maybe 3 or 4 teeth and push bike backwards ...chain on no tools required. __________________ 1991 harley heritage softail classic 2016 hawk kaw h1 400 tripple 13' long chopper in progress 2009 johnny pag bar hog 2004 hd electra glide ultra classic shriner edition 1997 harley davidson 1200 sportster 1972 harley davidson amf sx250
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06-18-2018, 04:56 PM	#47
ChipToothy Join Date: Apr 2018 Posts: 819	Ok thanks again! I have “lubed” the chain with 10w40 once a week since getting the bike. I paint it on heavy with a brush, let it soak about an hour then give it a run through a rag to pick up any grit and excess oil. I’m hoping by August to switch to the Oring system. The 520 style I seen it called on here somewhere.
	0

06-18-2018, 09:23 PM	#50
Sullybiker Join Date: Dec 2016 Location: Western PA Posts: 363	I had the chain jump the rear sprocket on my TT last December. It was my fault; I was running it too loose. I'm of the loose-is-better school, and I'd just cleaned and oiled it and eyeballed the slack; going over a bump the chain hopped off and rested between the sprocket and swingarm. Thankfully it didn't jam. Luckily it was only a couple of miles from home so I just drove my tools out and stand out and put it back on. It's amazing how fast you can do it when you're in a hurry... The thing is, I didn't think it was that loose; I just thought the manual spec of 15mm was a bit tight so I left a bit of play in it.
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