Gas-nitrited tuning clutch bell machined from high grade steel with a hole for easy clutch adjustment. Special vents remove dirt and clutch lining debris automatically, preventing it from accumulating in the clutch bell and causing premature wear to clutch bell and linings. They aid in cooling of the clutch bell as well.The clutch bell features a significantly reinforced wearing surface whichguarantees dimensional stability even under high loads!Since this clutch bell is single-piece machined from bar stock there is no weld bead on the inside of the face plate. The gained space allows now to use the adjustable GPM clutches Big Scale Extreme and Cross.Suitable for slot drive HPI Baja pinions, both stock using a 4mm bolt and aftermarket ones for 5mm bolts. Comes with M4 and M5 bolts included.
Complete set with clutch bell and one each 17T and 18T steel pinion.GPM clutch bell with 5 mm pinion bolt. CNC-machined one-piece bell for absolute true running. Inclusive mountings.GPM 17T and 18T steel pinions are profile regraded. This allows for a change in gearing by a pinion swap alone.Module: m=1,5Profile regraded means that the number of teeth is changed while the diameter remained constant. The part of the involutes? curve that defines the tooth profile is changed. Positively regraded (lower number of teeth) pinions are stronger and run smoother, the reduced strength of negatively regraded pinions doesn?t really matter.Content of delivery:GPM steel clutch bell SBJ613GPM steel pinion 17T SBJ017TGPM steel pinion 18T SBJ018TO
Regular price Big Scale Clutch: 109,90 EUR Nitriding hardened clutch bell: 40,50 EUR complete price:.......................150,40 EURAdjustable 3-shoe clutch for:Zenoah / Chung Yang / HPI - Fuelie / Smartech PT and many other engines.The delivery content:- y0730 GPM Big Scale-Cross adjustable 3 shoe clutch, 1 pce. - y0729 Gas-nitrited tuning clutch bell for HPI Baja, 1 pce. The Gas-nitrited tuning clutch bell:Gas-nitrited tuning clutch bell machined from high grade steel with a hole for easy clutch adjustment. Special vents remove dirt and clutch lining debris automatically, preventing it from accumulating in the clutch bell and causing premature wear to clutch bell and linings. They aid in cooling of the clutch bell as well. The clutch bell features a significantly reinforced wearing surface and face which guarantees dimensional stability even under high loads! The shaft is a tiny bit longer than stock (about 0.2 mm) to prevent the bearings from binding. Since this clutch bell is single-piece machined from bar stock there is no weld bead on the inside of the face plate. The gained space allows now to use the adjustable GPM Big Scale-Cross clutch. Suitable for genuine slot drive HPI pinions. Comes with bolts and spring washers included.The GPM-Big Scale clutch:Suitable for racing and for the ambitious hobbyist driver. Unlike the stock clutch, the installed GPM-Big Scale clutch can be adjusted by turning one single screw. A 2.5 mm allen key wrench is required for this application.Therefore it is possible to precisely adjust the clutch engagement depending on track characteristics.Handling instructions for three-shoe clutches y0730 GPM Big Scale Cross and y0731 GPM Big Scale RaceInstallation:The GPM Big Scale clutch will be bolted to the crankshaft using the supplied CSH-screw.It should be noted that the use of thread locking compound on that screw is neither necessary nor recommended!Removal:Remove the CSH-screw with a 4mm Allen wrench; then insert a suitable M8 bolt and remove the clutch from the crankcase cone by tightening that bolt. Hole for adjustment:For clutch adjustment without removing the clutch bell a 4 4.5 mm hole must be drilled into the clutch bell for access to the adjustment screw. Placement of the hole depends on clutch bell dimensions and car; so you have to make your own measurements for the placement of the hole.It is important that the drilled hole is thoroughly deburred (at least on the inside of the clutch bell) to prevent excessive clutch pad wear. Breaking in:A new clutch or shoes fitted with new pad should always be broken in. Therefore the clutch engagement speed should not be too high for the first tank of fuel. This gives the lining the possibility to adjust to the clutch bell without glazing. The only difference between two clutches is the clutch spring rate, which provides the optimal range for clutch engagement depending on the application. The three available versions of clutch springs provide adjustability within the following RPM ranges:Silver springs 1.3 mm y0730/05 (standard on Big Scale Cross): 5,000 9,500 RPMGold springs y0730/06 1.4 mm (standard on Big Scale Race): 6,500-11,500 rpm Adjustment:Adjustment of the clutch engagement speed is done by one single screw using a 2.5 mm Allen wrench. Turning the screw in increases the stall speed, backing it out will lower the stall speed. The adjusting screw is thread locked to keep the setting. Should you realize that the screw can be turned too easily please re-apply medium strength thread locking compound.Finding the best clutch engagement speed:The best clutch engagement speed should be found while driving on the track, it depends on engine characteristic, track layout, track surface and driving style.It is recommended to start with the lowest setting (which means the set screw just touching the adjustment cam) and gradually turning the adjusting screw in while doing test runs after every adjustment.If you feel that you have exceeded your best engagement speed (clutch will slip too much), back the screw out for a little bit to avoid excessive wear or glazing of the pads.Attention: You must use adhesive y0743 Clutch-Safe when replacing clutch pads!
Ultra Soft, the new PMT compound for use on routes with little grip or in cold temperatures. PMT tire chart from the current series divided into 3 categories 1) Parking lot / hobbyThe durability of the tire is the main focus here.2) Race track / hobbyHere you will find the tire that offers a compromise of durability and performance.3) Race track / competitionHere the racer will find the tires for best lap times on a race track and to win races.Note:The harder a tire compound - the longer it lasts, but the more moderate the performance.The softer a tire compound - the better the performance, but the lower the durability. Hint!As a rule, the same tires can be used for front and rear.If the vehicle tends to oversteer, this can be avoided by using a harder front tire!In wet conditions you should use a rain tire which offers maximum grip under these circumstances.With the use of Magic Rain, a tire traction compound, the grip can be further improved.Check your tires after driving! It can happen that a tire starts to detach from the rim, in this case you should glue this spot immediately with our tire repair kit (y0067), otherwise the tire could detach completely from the rim.So find out which tire is the best for you!Genuine PMTspare/option part. PMT - large scale slick 2019Winner of all three 1/5 EFRA Grand Prix races this year, as well as in the ELS Cup Luxembourg:April 28th: 1st EFRA Grand Prix at Lostallo, CHMay 26th: 2nd EFRA Grand Prix at Leipzig, GermanyJune 23rd: 3rd EFRA Grand Prix at Groningen, NLAugust 11th ESL-Cup LuxembourghRecommended use according to the manufacturer PMT: H - Hard, as front tires on very grippy asphalt and at high temperatures M - Medium, as front tires on normal asphalt and at normal temperatures S - Soft, as rear tires on normal asphalt and at normal temperatures SS - Ultra Soft, as rear tires on less grippy asphalt and at lower temperatures Dimension: Outside diameter: approx. 116 mm Width: approx. 65 mm Rims: 18 mm square driveContents:2 piece