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(function(){ let w = window.innerWidth; function setHeaderCssVar() { const headerEle = document.getElementById('shoplaza-section-header'); if(!headerEle){ return }; document.body.style.setProperty('--window-height', `${window.innerHeight}px`); document.body.style.setProperty('--header-height', `${headerEle.clientHeight}px`); const mdScorllHideEle = headerEle.querySelector('.header__mobile .header__scroll_hide'); if (mdScorllHideEle) { document.body.style.setProperty('--header-scroll-hide-height-md', `${mdScorllHideEle.clientHeight}px`); } const pcScorllHideEle = headerEle.querySelector('.header__desktop .header__scroll_hide'); if (pcScorllHideEle) { document.body.style.setProperty('--header-scroll-hide-height-pc', `${pcScorllHideEle.clientHeight}px`); } } function handlResize() { if(w == window.innerWidth){return}; w = window.innerWidth; setHeaderCssVar(); }; function init(){ setHeaderCssVar(); window.removeEventListener('resize', window._theme_header_listener) window._theme_header_listener = handlResize; window.addEventListener('resize', window._theme_header_listener); } init(); })();

Why do we need to add lubricant to the CVD drive shaft of MN Model MN128 RC Car?

Jun 01, 2026 by mnrccars

The gears on the MN Model MN128 RC Car CVD drive shaft are made of metal. Without lubrication, friction between parts will increase, causing abnormal noise and accelerating component wear. The drive shaft is prone to jamming, which hinders power transmission and may damage surrounding parts.

How to apply the lubricant and how much should be used for MN Model MN128 RC Car?

Clean the CVD surface of MN Model MN128 RC Car thoroughly first. Apply a thin and even layer of lubricant to the movable joints and contact areas. Do not over-apply. A small amount is enough. Excess grease will stick to dust and sand, which will cause extra wear.

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const TAG = "spz-custom-announcement"; const DISPLAY_TYPE = { ANNOUNCEMENT: "PTT_BANNER" // 公告栏 }; const API = { LIST: `/api/storefront/promotion/placement/list`, // 获取公告栏列表 REPORT: `/api/storefront/promotion/placement/data/report` // 上报数据 }; const DISPLAY_DEVICE = { PC_AND_MOBILE: "PD_PC_MOBILE", // PC和移动端 PC: "PD_PC", // PC MOBILE: "PD_MOBILE" // 移动端 }; const REPORT_EVENT = { CLICK: "PE_CLICK", // 点击事件 IMPRESSION: "PE_IMPRESSION" // 曝光事件 }; const POSITION = { TOP: "PP_TOP", // 顶部 BOTTOM: "PP_BOTTOM" // 底部 } const MODE = { FIXED: "PM_FIXED", // 固定 NORMAL: "PM_SCROLLING" // 滚动 } const THEME_NAME = window.SHOPLAZZA.theme.merchant_theme_name; class SpzCustomAnnouncement extends SPZ.BaseElement { constructor(element) { super(element); this.announcementList_ = []; // 公告栏数据 } static deferredMount() { return false; } buildCallback() { this.action_ = SPZServices.actionServiceForDoc(this.element); this.templates_ = SPZServices.templatesForDoc(this.element); this.xhr_ = SPZServices.xhrFor(this.win); this.setupAction_(); this.viewport_ = this.getViewport(); } mountCallback() { this.fetchData_(); this.createAnnouncementDom_(); this.listenCartChange_(); } fetchData_(type = '') { const id = window.SHOPLAZZA.meta.page.template_type === 51 ? window.SHOPLAZZA.meta.page.resource_id : 0; return this.xhr_.fetchJson(API.LIST, { method: 'POST', body: { page_id: window.SHOPLAZZA.meta.page.template_type, placement_type: DISPLAY_TYPE.ANNOUNCEMENT, discount_id: id } }).then((res) => { this.announcementList_ = res.list || []; if (this.announcementList_.length > 0) { this.announcementList_.forEach((item) => { item.config = JSON.parse(item.config); }); } if(type === 'cartChange') { this.announcementList_.forEach((item) => { this.updateText_(item); }); } else { this.doRender_(this.announcementList_); } }).catch((error) => { console.error(error); }) } doRender_(data) { return this.templates_ .findAndRenderTemplate(this.element, { list: this.announcementList_ }) .then((el) => { const children = this.element.querySelector('*:not(template)'); children && SPZCore.Dom.removeElement(children); this.element.appendChild(el); }) .then(() => { this.announcementList_.forEach((item) => { this.showAnnouncement_(item); }); }).then(() => { this.handleThemeCompatibility_(); }); } // 更新文案 updateText_(item) { const announcement = document.querySelector(`#announcement-${item.id}`); const announcementText = announcement.querySelectorAll('.announcement_text'); const textArr = item.config.text_discount.replace_texts; const textDom = textArr.map((text) => { return `${text}`; }).join(','); announcementText.forEach((text) => { text.innerHTML = textDom; }); } // 创建公告栏dom createAnnouncementDom_() { const isHero = /Hero/.test(THEME_NAME); const isEva = /Eva/.test(THEME_NAME); const headerEl = document.querySelector('[data-section-type="header"]'); const headerSticky = headerEl && SPZCore.Dom.computedStyle(this.win, headerEl).position === 'sticky'; // 创建滚动的底部公告栏 const announcementBottomContainer = document.createElement('div'); announcementBottomContainer.className = 'announcement__container_bottom bootstrap'; document.body.appendChild(announcementBottomContainer); // 创建固定的底部公告栏 const announcementBottomSticky = document.createElement('ljs-sticky'); announcementBottomSticky.className = 'announcement__container_bottom-sticky'; announcementBottomSticky.setAttribute('layout', 'container'); announcementBottomSticky.setAttribute('position', 'bottom'); announcementBottomSticky.style.position = 'fixed'; announcementBottomSticky.style.bottom = '0'; announcementBottomSticky.style.left = '0'; announcementBottomSticky.style.right = '0'; announcementBottomSticky.style.zIndex = '1030'; document.body.appendChild(announcementBottomSticky); const announcementTopContainer = document.createElement('div'); announcementTopContainer.classList.add('announcement__container_top'); if (isHero) { announcementTopContainer.classList.add('announcement__container_top_zIndex_1030'); } announcementTopContainer.classList.add('bootstrap'); document.body.insertBefore(announcementTopContainer, document.body.children[0]); const announcementTopFixedContainer = document.createElement('div'); announcementTopFixedContainer.classList.add('announcement__container_top-fixed'); if (isHero) { announcementTopFixedContainer.classList.add('announcement__container_top_zIndex_1030'); } announcementTopFixedContainer.classList.add('bootstrap'); const insertBeforeElement = headerSticky ? headerEl : document.body; insertBeforeElement.insertBefore(announcementTopFixedContainer, insertBeforeElement.children[0]); if (isEva) { const evaHeader = document.querySelector('header.header'); const isEvaMaskHeader = evaHeader && SPZCore.Dom.computedStyle(this.win, evaHeader).position === 'absolute'; let fixedBannerTopContainer = document.querySelector('.announcement__container_top-fixed'); if (isEvaMaskHeader) { if (fixedBannerTopContainer) { fixedBannerTopContainer.remove(); } const newBanner = document.createElement('div'); newBanner.className = 'announcement__container_top-fixed bootstrap'; document.body.insertBefore(newBanner, document.body.firstChild); fixedBannerTopContainer = newBanner; } else { if (!headerEl) return; const observer = new MutationObserver(() => { const isSticky = SPZCore.Dom.computedStyle(this.win, headerEl).position === 'sticky'; if (!isSticky) return; const isTopFixedAnnouncementInHeader = headerEl.querySelector('.announcement__container_top-fixed'); if (isTopFixedAnnouncementInHeader) return; const announcementTopFixedContainer = document.querySelector('.announcement__container_top-fixed'); if (announcementTopFixedContainer) { announcementTopFixedContainer.remove(); headerEl.insertBefore(announcementTopFixedContainer, headerEl.children[0]); observer.disconnect(); } }); observer.observe(headerEl, { attributes: true, attributeFilter: ['style', 'class'] }); } if (headerSticky && !isEvaMaskHeader && fixedBannerTopContainer) { fixedBannerTopContainer.style.position = 'relative'; fixedBannerTopContainer.style.zIndex = '29'; } } } // 展示公告栏 showAnnouncement_(item) { const announcement = document.querySelector(`#announcement-${item.id}`); const announcementBottomContainer = document.querySelector('.announcement__container_bottom'); const announcementBottomSticky = document.querySelector('.announcement__container_bottom-sticky'); const announcementTopContainer = document.querySelector('.announcement__container_top'); const announcementTopFixedContainer = document.querySelector('.announcement__container_top-fixed'); const isPC = this.viewport_.getWidth() >= 960; const isMobile = this.viewport_.getWidth() < 960; const isMatchPCDevice = item.device === DISPLAY_DEVICE.PC_AND_MOBILE || item.device === DISPLAY_DEVICE.PC; const isMatchMobileDevice = item.device == DISPLAY_DEVICE.PC_AND_MOBILE || item.device === DISPLAY_DEVICE.MOBILE; if((isPC && isMatchPCDevice) || (isMobile && isMatchMobileDevice)) { if (item.position === POSITION.BOTTOM) { if(item.mode === MODE.FIXED) { announcementBottomSticky && announcementBottomSticky.appendChild(announcement); } else { announcementBottomContainer && announcementBottomContainer.appendChild(announcement); } } else { if (item.mode === MODE.FIXED) { announcementTopFixedContainer && announcementTopFixedContainer.appendChild(announcement); } else { announcementTopContainer && announcementTopContainer.appendChild(announcement); } } this.reportData({ placement_id: item.id, event: REPORT_EVENT.IMPRESSION }); } } // 处理主题兼容 handleThemeCompatibility_() { try { const isBoost = /Boost/.test(THEME_NAME); const isHyde = /Hyde/.test(THEME_NAME); const isEva = /Eva/.test(THEME_NAME); const boostHeader = document.querySelector('.boost-header'); const fixedBannerTopContainer = document.querySelector('.announcement__container_top-fixed'); const notFixedBannerTopContainer = document.querySelector('.announcement__container_top'); const headerEl = document.querySelector('[data-section-type="header"]'); const headerSticky = headerEl && SPZCore.Dom.computedStyle(this.win, headerEl).position === 'sticky'; const header = document.querySelector('.header__fixed') || document.querySelector('.header__wrapper'); const headerFixed = header && SPZCore.Dom.computedStyle(this.win, header).position === 'fixed'; const handleScroll = SPZCore.Types.throttle(this.win, () => { if (isHyde) { if (header && headerSticky) { header.style.marginTop = `${fixedBannerTopContainer.offsetHeight}px`; } else { notFixedBannerTopContainer.style.marginTop = `${fixedBannerTopContainer.offsetHeight}px`; } } if (isEva) { const evaHeader = document.querySelector('header.header'); const isEvaMaskHeader = evaHeader && SPZCore.Dom.computedStyle(this.win, evaHeader).position === 'absolute'; if (!isEvaMaskHeader) return; if (evaHeader.classList.contains('header__fixed')) { evaHeader.style.marginTop = `${fixedBannerTopContainer.offsetHeight}px`; } else { notFixedBannerTopContainer.style.marginTop = `${fixedBannerTopContainer.offsetHeight}px`; } if(document.documentElement.scrollTop === 0) { evaHeader.style.marginTop = '0'; } } if (headerSticky) return; if (headerFixed) { header.style.marginTop = `${fixedBannerTopContainer.offsetHeight}px`; } else { const observer = new MutationObserver((mutationsList, observer) => { for (const mutation of mutationsList) { if (mutation.type === 'childList' && fixedBannerTopContainer.childElementCount > 0) { notFixedBannerTopContainer.style.marginTop = `${fixedBannerTopContainer.offsetHeight}px`; observer.disconnect(); // 停止观察 break; } } }); // 开始观察 fixedBannerTopContainer 的子节点变化 observer.observe(fixedBannerTopContainer, { childList: true, subtree: true }); // 初始检查 if (fixedBannerTopContainer.childElementCount > 0) { notFixedBannerTopContainer.style.marginTop = `${fixedBannerTopContainer.offsetHeight}px`; } if(header) { header.style.marginTop = '0'; } } if (isBoost) { fixedBannerTopContainer.style.zIndex = '1031'; if (boostHeader && boostHeader.classList.contains('header__fixed')) { boostHeader.style.marginTop = `${fixedBannerTopContainer.offsetHeight}px`; } else { notFixedBannerTopContainer.style.marginTop = `${fixedBannerTopContainer.offsetHeight}px`; } } }, 16); window.addEventListener('scroll', handleScroll); window.dispatchEvent(new Event('scroll')); } catch (error) { console.error('error', error); } } // 上报数据 async reportData(data) { // 如果是主题编辑器则不用处理 if(window.top !== window.self) { return; } this.xhr_.fetchJson(API.REPORT, { method: "POST", body: { placement_id: data.placement_id, event: data.event } }); } // 监听购物车变化事件dj.cartChange listenCartChange_() { SPZUtils.Event.listen(document, 'dj.cartChange', (event) => { this.fetchData_('cartChange'); }); } setupAction_() { this.registerAction('handleClose', (invocation) => { const data = invocation.args; const id = data.id; const announcement = document.querySelector(`#announcement-${id}`); announcement && SPZCore.Dom.removeElement(announcement); window.dispatchEvent(new Event('scroll')); }); this.registerAction('handleJumpLink', (invocation) => { const data = invocation.args; if(!data.show_url) return; data.url && window.open(data.url, data.open_new_window ? '_blank' : '_self'); this.reportData({ placement_id: data.id, event: REPORT_EVENT.CLICK }); }); } triggerEvent_(name, data) { const event = SPZUtils.Event.create(this.win, `${ TAG }.${ name }`, data || {}); this.action_.trigger(this.element, name, event); } isLayoutSupported(layout) { return layout == SPZCore.Layout.CONTAINER; } } SPZ.defineElement(TAG, SpzCustomAnnouncement);