chain coming off gas powered bike - PocketBikeForum.com

Grand Forks · 05-11-2006, 12:32 PM

You guys are my last resort so please come to my aid.I have a gas powered bike that I have been using for a while.The chain has now started coming off.I have taken if to almost everywhere in winnipeg and they say they don't fix bikes of such.It's a japanese model kimoto. Would someone please tell if if he has had problems of such and where or how he got to fix it?

*Bruce* · 05-11-2006, 01:43 PM

I believe I spoke with you via email this morning.

The chain is probably stretched. You could replace the chain or you could tighten the chain by turning the adjustors on the rear swing arm.

Loosen the nuts holding the rim, and tighten the adjustors which will move the rin further back. Make sure you turn both sides an equal amount to keep the tire alignment straight.

I gave you a number to call via email if you need further assistance.

Grand Forks · 05-11-2006, 06:43 PM

thanks.I posted this at the same time I e-mailed.I spoke to your partner and I am scheduled to call him back in the evening.

Grand Forks · 05-15-2006, 01:28 AM

Is there a way you could help me out? I have tried everything you mentioned and still could not fix it.It still came off after about a minute.I also couldn't get through using the number you gave me.
thanks.

inthelead83 · 05-15-2006, 10:50 AM

make sure all of the engine mounts are tight esspecially the one ontop this happened to me and caused a lot of damage

Grand Forks · 05-18-2006, 06:21 PM

thanks that still didn't solve the problem

inthelead83 · 05-18-2006, 06:22 PM

is your chain kinked at all and check your rear sprocket to see if it is bent

Grand Forks · 05-20-2006, 08:40 AM

I don't know if that's what caused the original problem but bending the rear sproket a little seemed to give it a temporary fix i.e the chain looks tightened but it then twists back thereby loosing the chain.After like a min when the engine is heated up.This then makes it come off.

lennyb · 05-20-2006, 11:58 AM

although you have probably done all this, i will offer it up as a start; first determine if it is kicking the chain off at the drive or at the driven end of things, drive end:engine-trans all tight and aligned. pinion sprocket seating properly and at right depth, end shaft play acceptable, bent shaft or pinion,excessive vibration. drive sprocket;spacers on correct sides and of proper size, sprocket straight in line with pinion with no angles or deflections, sprockets of compatible tooth count with chain, wrong type of sprocket or faulty machining, bad bearing or hub, worn chain guide or rollers, bent swing arm or frame, or just a plain old wore out chain or spocket.....

05-11-2006, 12:32 PM	#1 (permalink)
Grand Forks Pocketbike Beginner Join Date: May 2006 My Gallery Posts: 5	chain coming off gas powered bike You guys are my last resort so please come to my aid.I have a gas powered bike that I have been using for a while.The chain has now started coming off.I have taken if to almost everywhere in winnipeg and they say they don't fix bikes of such.It's a japanese model kimoto. Would someone please tell if if he has had problems of such and where or how he got to fix it?

05-11-2006, 01:43 PM	#2 (permalink)
Bruce Pocketbike Dealer Join Date: Sep 2005 My Gallery Location: Winnipeg MB Posts: 264	I believe I spoke with you via email this morning. The chain is probably stretched. You could replace the chain or you could tighten the chain by turning the adjustors on the rear swing arm. Loosen the nuts holding the rim, and tighten the adjustors which will move the rin further back. Make sure you turn both sides an equal amount to keep the tire alignment straight. I gave you a number to call via email if you need further assistance. __________________ http://www.custompocketbike.ca http://www.pocketbikeracing.ca

05-11-2006, 06:43 PM	#3 (permalink)
Grand Forks Pocketbike Beginner Join Date: May 2006 My Gallery Posts: 5	chain coming off thanks.I posted this at the same time I e-mailed.I spoke to your partner and I am scheduled to call him back in the evening.

05-15-2006, 01:28 AM	#4 (permalink)
Grand Forks Pocketbike Beginner Join Date: May 2006 My Gallery Posts: 5	chain coming off Is there a way you could help me out? I have tried everything you mentioned and still could not fix it.It still came off after about a minute.I also couldn't get through using the number you gave me. thanks.

05-15-2006, 10:50 AM	#5 (permalink)
inthelead83 Pocketbike King Join Date: Nov 2005 My Gallery Real Name: Shawn Pocketbikes Owned: 5 Location: Pine Ridge Posts: 1,859	make sure all of the engine mounts are tight esspecially the one ontop this happened to me and caused a lot of damage __________________ RCMRRA - Vice President Proud Owner of: Modded Blata b1 Origami, Blata Elite 11, & Moto-Vert www.rcpra.net 3rd Place overall in CCMRRS 50cc pocketbikes 3rd Place overall in CCMRRS Open Mini Motard

05-18-2006, 06:21 PM	#6 (permalink)
Grand Forks Pocketbike Beginner Join Date: May 2006 My Gallery Posts: 5	thanks that still didn't solve the problem

05-18-2006, 06:22 PM	#7 (permalink)
inthelead83 Pocketbike King Join Date: Nov 2005 My Gallery Real Name: Shawn Pocketbikes Owned: 5 Location: Pine Ridge Posts: 1,859	is your chain kinked at all and check your rear sprocket to see if it is bent __________________ RCMRRA - Vice President Proud Owner of: Modded Blata b1 Origami, Blata Elite 11, & Moto-Vert www.rcpra.net 3rd Place overall in CCMRRS 50cc pocketbikes 3rd Place overall in CCMRRS Open Mini Motard

05-20-2006, 08:40 AM	#8 (permalink)
Grand Forks Pocketbike Beginner Join Date: May 2006 My Gallery Posts: 5	I don't know if that's what caused the original problem but bending the rear sproket a little seemed to give it a temporary fix i.e the chain looks tightened but it then twists back thereby loosing the chain.After like a min when the engine is heated up.This then makes it come off.

05-20-2006, 11:58 AM	#9 (permalink)
lennyb Pocketbike Beginner Join Date: May 2006 My Gallery Posts: 12	although you have probably done all this, i will offer it up as a start; first determine if it is kicking the chain off at the drive or at the driven end of things, drive end:engine-trans all tight and aligned. pinion sprocket seating properly and at right depth, end shaft play acceptable, bent shaft or pinion,excessive vibration. drive sprocket;spacers on correct sides and of proper size, sprocket straight in line with pinion with no angles or deflections, sprockets of compatible tooth count with chain, wrong type of sprocket or faulty machining, bad bearing or hub, worn chain guide or rollers, bent swing arm or frame, or just a plain old wore out chain or spocket.....

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