Question about Max 2 Tail Rotor Blade For Yiboo Shark Rc Helicopter

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I need to repair balance bar and main shaft on Yiboo UF4703 how would I go about doing this?

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How do you get balance shaft drive sprockets off?


You need to remove the balance shafts first. Be VERY careful or you will end up breaking off the tab that the small hold down bolt goes through. You need to remove this little bolt first of course. I found that using a pry bar on the bottom of the sprocket itself seemed to work best.
Once you have the balance shaft out, clamp it in a vise using wood or something similar so that you do not damage any if the surface that rides on the bearing. Then remove the 15 mm bolt holding the gear (sprocket) on. Re-install the new gear and torque to 37 ft-lbs. The new gear is slotted so it can only go on one way. Do not mix up the intake & exhaust balance shaft gears. Good luck.

Jul 07, 2014 | 2003 Chevrolet Cavalier

1 Answer

Vehicle shakes at 60 mph all wheels and struts replaced


Hello, Are the tires and wheels balanced? If they are balanced then check the drive shaft. This drive shaft transfer the power from the engine/auto transmission to the rear differential/rear wheel.
Now, on each end of the drive shaft is a flexible yoke, this splined yoke has a U-joint with four bearing cups. Two of the bearing cup is attached to the splined yoke and two are attached to the drive shaft. Now, on the rear differential end is a yoke but it has 4 bolts and nuts, it also will have a U-joint attached to the 4 bolted yoke and to other bearing cups attach to drive shaft. U-Joint is called "Universal Joint" Each U-joint has about 10 degree circular travel without any type of binding to the U-joints or the drive shaft.



Two things here. First, take a pry bar and wedge into the U-Joint and move the bar forwards, backwards, up and down. If the drive shafts moves in any direction and clanks. The u-joints need to be replaced and I would replace both of the U-joints. Secondly, if the U-joints aren't loose, then there is a good possibility that the drive shaft is out of balance. In other words, it has lost it small welded plats on the drive shaft and when you are drive you Chrysler the drive shaft is vibrating.



To replace the U-Joints and/or balance the drive shaft. You'll need to remove those 4 bolts and nuts on the differential yoke. Once the bolts are removed then push the drive shaft forward, it will slide forward. Now, under the transmission yoke place a pan/bucket/container to catch the transmission fluid that will drain out once the drive shaft is pull free from the transmission.



If you don't have a press, vise, brass 5 lb hammer, bushing, punches, then I would tackle this job of replacing these U-Joints. Without the proper tools, one can damage the U-joint yokes and the drive shaft. I wouldn't do this without the tools and experience. I use a cutting torch but I have been do it for 50+ years.



If the drive shaft is out of balance, then you will need to take to Drive Line Specialty Shop to have it balanced. Also, have them replace the U-Joints. They have all equipment to do this job. I wish you luck in your endeavor. GB....stewbison

Sep 21, 2011 | 2004 Chrysler Sebring

1 Answer

Ok got the retaining bolt off of harmonic balancer by using a breaking bar now using a 3 prong gear puller to remove balancer but it just dont want to budge.any suggestions


you may have the wrong puller to do the job. suggest you try an advance auto parts store and rent the right puller for the repair,all your money to rent the right tool will be refunded after the tools returned. the harmonic balancer should be removed easily with the right removal tool and a small ammount of wd40 sprayed onto the crankshaft behind and in front of the balancer onto the shaft. keep in mind that there is a half moon keeper key on the shaft where the balancer slides onto the crankshaft. lube the shaft well and it should slide off with ease with the removal tool. thank you for choosing fixya.com!!

Apr 18, 2011 | 1992 Buick Regal

2 Answers

We have a GYROS S107G and when we lift off the hellicopter immediately starts to lose control and the balancing bar seems to hit the upper blades causing it to crash. Also, the side braces which hold the...


The top of the main shaft is probably broken. There are 2 pins that hold the "head" for the main blades straight and are probably sheared off. This is causing the balance bar to hit the blades and cause it to crash. You could try the crash kit here: http://www.helipal.com/spare-part_v-max-parts_syma-s107.html

Jan 09, 2011 | xheli Syma S031 Outdoor RC Helicopter

1 Answer

Remove and replace balance bar?


Were you able to find a replacement balance bar? I broke mine and can't find one? Thanks!

Apr 18, 2010 | Apache RC Mini Helicopter AH-64

3 Answers

I have a 2002 jeep wrangler that seems to start shaking at 60mph below or over ok. It is not major but noticeable. Where do I start looking? Thanks Dan


Grab hold off the prop-shaft to see if it is quite solid, it could be a worn UJ. Check the balance weight on the same shaft to ensure it hasn't slipped forward or backwards on the shaft.
Then get wheels checked, they could need re-balancing.

Nov 26, 2009 | 2002 Jeep Wrangler

9 Answers

MY YIBOO CHINOOK HAS A BROKEN MAIN BLADE HUB. WHERE CAN I FIND REPLACEMENT FOR MAIN BLADE AND SHAFT?


I found this on xheli.com. Syma S022 big CH-47 chinook.
Looks like the same heli as Yiboo. Lists all spare parts.
Good Luck. Please post results if you order from this site.
I also have the Yiboo CH-47, have not needed parts yet, just got it for xmas from my wife.

Sep 15, 2009 | RC Toys

2 Answers

While accelerating,the vehicle hesitate and even jerks


Hesitation,jerking,acts as if it's not getting fuel? Have the egr/coil checked! I had same problem,thought it might be injectors,after delving deeper into it,I found the coil was defective

Jun 04, 2008 | 1999 Ford Expedition

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