BennyRocket 3 Posted September 19 Hi All 👋, I bought a second hand GF-01 and after running it a few times it has developed a squeak when in motion. It sounds like something needs more lubrication but I’m not sure what part. I’ve tried listening closely to locate where the sound might be coming from but no luck. Any ideas for a solution? Cheers! Share this post Link to post Share on other sites
Twinfan 2027 Posted September 19 Hard to say, does it have bearings throughout or just bushings? If it's bushings, it could be one of those. Even if it's bearings, it could also be one of those. Is it the suspension arms? Can you move them while holding the car and get it to squeak? Same with spinning the wheels? You could strip it down to the two chassis halves and check each bushing/bearing and rebuild it but it's a time consuming process - a few hours if you take your time. 1 Share this post Link to post Share on other sites
Juggular 5089 Posted September 19 Without hearing, my first guess would be nylon bushings having lost all lubrication. Those white plastic bushings are like glass, when rubbing on steel shafts without lubrication, they can squeak like a little bird is dying or something.  If you've got bushings, bearings might be a good upgrade. They can make you accelerate faster, run longer and achiever higher top speed. I forget the percentage, maybe 15% faster acceleration, 10% faster top speed, 12% longer run time. At minimum, you should gain close to 10% on all three accounts.  Bearings are harder to make squeaking noises, but you never know. I think GF01 uses only 1150 bearings. 22 or 24? Not sure of the numbers. You can get 25 of them for $9. Shipping isn't free, unless you rack up $30, though. Just type in 5x11x4mm bearings, and you'd find deals from Temu, Aliexpress, etc.   https://www.temu.com/5x11x4mm-mr115-2rs-bearings-width-miniature-small-bearings-pre-lubricated-and-double-rubber-sealed-30-pcs-g-601099666084366.html?_oak_mp_inf=EI6kyeCm1ogBGiBhNDBjMTE3NGM1ZjM0MzliOTFiM2FjMGRkZGE5NGYzZCC3o5jboDI%3D&top_gallery_url=https%3A%2F%2Fimg.kwcdn.com%2Fproduct%2Ffancy%2Faa1f1db9-0b11-491d-b65b-7712f3e9eef3.jpg&spec_gallery_id=2425379438&refer_page_sn=10009&refer_source=0&freesia_scene=2&_oak_freesia_scene=2&_oak_rec_ext_1=OTE5&search_key=ball bearing 5x11x4&refer_page_el_sn=200049&_x_enter_scene_type=cate_tab&_x_sessn_id=6aa35f23k8&refer_page_name=search_result&refer_page_id=10009_1726768095583_oik8er77d5 Even Amazon sells 20 for $10. https://www.amazon.com/Sackorange（20-MR115-2RS-5x11x4mm-Replacement-Precision/dp/B073SP7TN1/ref=sr_1_3?dib=eyJ2IjoiMSJ9.F3prlcv3Dpof_onb8YVs9zG8XPsW6bKhhP0dF2xb7gAzddQ5MG8oTZGsWhWRSwKMhtA6lBuPwfbuuSIYNOz-PYPNH2H0aW-71Dk4vPBph_nMXqprhzhJZhYyO-7P-YGLd7U5zvcuSZd30kYkXE04Ac4R55V4Ij44GWGT7DP6XEnsrMAF3wzssg5Mxc33CmhqGIWEPqbyGOVdyT81Yxj4Xhh5igFiYkV7wGJLpVPfPn4.x4uPCNYoUN8vZUErlJC3Wbe0CLQyNzSiAJ19xicQMi8&dib_tag=se&keywords=5x11x4mm+bearings&qid=1726769908&sr=8-3 Second guess would be worm gears loose on the pinion gear of the motor. But that tend to be a pulsating noise.  1 Share this post Link to post Share on other sites
Twinfan 2027 Posted September 19 A GF-01 has 26 bearings:Â 850 x2, 1150 x24. 2 Share this post Link to post Share on other sites
chris.alex 1349 Posted September 19 I'm guessing it's the suspension arms. 1 Share this post Link to post Share on other sites
TurnipJF 10277 Posted September 19 I'm guessing the endbell bushing or bearing in the motor. It is the most exposed of all. 1 Share this post Link to post Share on other sites
BennyRocket 3 Posted September 20 Thanks All! 😊 Great info from everyone. Better get my toolkit out and start investigating. 1 Share this post Link to post Share on other sites
