New Chain Tensioner - Advice? | OldMiniBikes.com
2010年9月23日 · Well-Known Member. Sep 24, 2010. #11. korndog. The spring loaded tensioner should keep the slack out of the top run of chain while that run of chain is being held taunt while the engine is driving the rear wheel. However, it seems to me, that when the throttle is closed, and the rear wheel then drives the engine, the bottom strand will then be ...
Chain Tensioner - OldMiniBikes.com
Dec 27, 2014. #1. Chain tensioners on these Doodle Dirt bikes. I been trying to figure out how to adjust my chain tension, it seems no matter I adjust it the chain doesn't get any tighter. I took a couple of links out, I am trying to put a 5 hp Briggs on the frame with a OldMiniBikes mounting plate. Of course with the rear fender mount and a ...
Chain problem Baja DoodleBug - OldMiniBikes.com
2012年12月30日 · Dec 31, 2012. #18. IMHO and a taste of experience I believe there is usually a combination of causes [not just one issue] to make a particular bike a problem child when it comes to keeping the chain on. 1. The engine plate [and frame] is flexing and allowing the engine and rear sprocket to get closer together.
Need rear axle for my Hawg-Ty mini - OldMiniBikes.com
Rapidrob. Oct 15, 2021. #1. Took my mini for a ride in the mountains today and the drive side chain tensioner failed allowing the rear axle to slide forward in such a manner the threads are FUBAR and cannot be repaired. The rear axle is 15 mm in diameter and 343 mm long ( 13.50") Both ends are threaded for what appears to be 9/16"x20 NF.
Skate board wheels for chain / belt tensioners.
Nov 15, 2019. #1. Been thinking about better chain tensioner wheels for my Mini bikes. Did some research, & found out that the bearing sizes of skate board wheels are the same size as a lot of tensioner bearings. Universal OD on skate board bearings are 22mm, with a 8mm ID, & 7mm width. They are the same as the ones on my Monster Moto bikes.
Doodlebug Spring-loaded Chain Tensioner - OldMiniBikes.com
2014年7月8日 · All you need is a short length of flat steel for the lever; a couple nuts & bolts and a spring. Drill some holes for the pivot point, roller and one or more for the spring. Mount it so it moves freely under the chain and stretch the spring to the existing chain guard hole on the cross brace. You're done. As far as the time to fab it all up is ...
Unable to remove CT200U chain tensioner | OldMiniBikes.com
2023年4月27日 · the arm of the chain tensioner on my son’s Coleman CT200U broke clean. The only thing remaining is the metal cylinder that the arm was attached to. It rotates freely around the stud but won’t slide off more than a millimeter before it feels like it’s hitting something. It looks like the stud is deformed slightly at the edge of the ...
Chain Tensioner - OldMiniBikes.com
2021年3月10日 · I am doing an 8” frame stretch on a DB30, being powered by an old school 1975, 5 hp Briggs and Stratton. In doing the stretch I will need to remove the original chain tensioner bracket. Since I’ll have to fabricate another tensioner bracket, should I stick with the slotted style tensioner, or...
do you need a chain tensioner on baja mini bikes?
Oct 16, 2011. #1. I bought 2 baja mini bikes, one a warrior, one a heat. the heat runs, but it doesn't have the chain tensioner thing between the crank clutch and the jack shaft. Do I need to replace it or will it be ok. it seems to run fine, but the chain does sag a little. Also, a link to purchase one if needed would be appreciated, havn't ...
Coleman ct200u chain tension and chain size. - OldMiniBikes.com
Jul 14, 2018. #2. Prop the rear wheel up off the ground; rotate the wheel by hand until the chain becomes tight; mark the sprocket with paint, tape, anything; rotate the wheel by hand and see if the sprocket is in the same position when the chain becomes tight again; repeat several times to be certain. If the sprocket is in the same position ...