DRIFT MANIAC 7 Speed Freewheel for E-Bike 11-28T/11-34T Screw On Freewheel

First, I am a novice skill level in bike repair!! 100 miles since I replaced my freewheel with DM 11 28! My Lectric XPeak is on a whole new level..performance greatly improved! The freewheel arrived in bright polished clean condition!!! Easy install..fit perfectly!!! Excellent result!!! Highly recommend this product!!!!

This 7-speed freewheel cassette is uniquely designed for this style of spin-on hub. With an 11t-28t range of gearing it's optimal for road bikes. Easy to install with the proper equipment. Finished in chrome give a clean shiny appearance. Fit on a standard wheel hubs, provides smooth, quiet shifts. Works great, made my bikes final gear ratio is nearly 5:1. Fast, and a decent value for the money.

Wanted to eliminate "ghost pedaling" (a/k/a hamster pedaling) in the upper gears of my e-bike (Bee Cool Explorer). This was a fairly easy upgrade, the hardest part is removing the old freewheel (you need the special freewheel tool and a long breaker bar attached to it). Once this new piece installed, I indexed my derailer to the new freewheel (there are dozens of you tube videos showing how easy this is) and then re-lubed my chain. I was quite impressed with how well my chain meshed with the teeth of this freewheel and how smoothly she shifted. I've eliminated the hamster effect of pedaling at higher speeds with no effect (akin to pedaling when you're going downhill). I will say that even in the mid-ranges, I feel more leg muscles working too, an added benefit for my old bones! I opted for staying with the 28T large gear and not going for the 32T or 34T. I live in Florida and we just don't have the kind of hills to need super-low gearing, otherwise I would have gone for it.

As described, quick ship, will mount and advise further upon use. A little heavy but going on e-bike, it appears to be quality made and would recommend.

Worked perfectly on my vintage 90’s mountain bike. The drivetrain group set on the bike is Shimano and this freewheel works great with it.

My e-bike came with a 14-28t freewheel. I was ghost pedaling at 20mph. Switching to this 11-28 freewheel totally solved that problem. I can manage reasonable input above 28mph now. This was a great first step. I was also going to change my front chain ring from a 42t to a 46t, but held off because I would have needed to replace the whole crank set and get a larger chain. I’m glad I waited because just changing to a freewheel with an 11t vs the 14t made a huge improvement. I’ve only had it on for a couple of weeks so I can’t speak to the longevity. No problems yet and the install was easy with the optional removal tool they sell. The opening on the tool was the largest I have seen and I think will accommodate most quick release motor connections. Now I can still get exercise while traveling quickly. It’s good for keeping up with traffic or using less watts to extend my range in peddle assist 4 or 5.

Perfect upgrade for a 7 speed freewheel for any geared motor ebike This thing combined with the 52 tooth front chainring on my ebike lets me pedal at a steady 37 mph and still feel resistance in the pedals in 7th gear it could even go faster if I could pedal faster, even the lower gears are improved 6th is good for 30+ mph, 5th for 25, 4th for 19 all actually letting me put in effort at various pedal assist levels for example pas 3 on my bike cuts off at 24 mph 5th gear lets me pedal at 25... so the motor only kicks in if i drop below 24. improving efficiency. it's even better at lower gears and settings because the motor uses less wattage when it is needed.

I bought this freewheel almost two years ago and remember how frustrated I was because I had spent a lot of time and simply could not get the 11 teeth sprocket work without slipping. I kind of stopped using the bike for a good year year because of that but recently started over and even bought a new chain (the old one was not worn) and still no success. First of all, as shown in other reviews, the teeth are oddly shaped and partially almost completely missing. That is the case even on the 11 and 13 teeth sprockets, even though it is clear that for these the entire chain tension is carried by only maybe 7 teeth, and yet they still put in these stupid rounded and way too short teeth. Now after replacing the chain (and the old one had accumulated a bit of dirt on the grease) I can clearly see to the side of the 11 teeth sprocket that the chain was in fact running on the freewheel shaft, instead of on the 11 teeth sprocket itself, I can clearly see the grease spots from the chain on the shaft, and the wear. Again, the brand new chain did not help here, it maybe made is worse, as it seems to slip even more. Overall, this is just a stupid design. It is possible that 11 teeth sprockets can work, if the freewheel shaft is smaller in diameter, or if there's normally shaped teeth, but the way they sold this, it just cannot work properly - by design!

Alles Super

Ottimo pacco pignoni, migliore addirittura di quello che avevo di serie sulla mia ebike(faceva rumore durante la pedalata), rapporti perfetti se avete una bici con ruote da 20 pollici per non dover più pedalare a vuoto durante l'assistenza del motore elettrico.

Works perfectly on my ebike. Make sure you have the correct tools for installation.

Ich habe an meinem Falt E-Bike den Schraub-Zahnkranz (Freilau) von 14 bis 28 T gegen diesen 7fach Schraub-Zahnkranz von 11 bis 28 T ausgetauscht. Damit man auf gerade Strecke im 7. Gang keinen Leerlauf hat und es hat sich gelohnt. Für den Preis ist er nicht ganz billig, aber von der Qualität ist er gut und ich werde sehen wie es sich bewährt. Es gibt auch diesen Zahnkranz von 11 bis 34, aber ich finde den Sprung vom 6. auf den 7. Gang von 24 auf 34 zu groß, was zu Schaltproblemen führen kann oder man nimmt eine längere Kette. Mein Tipp, einen guten Freilauf Zahnkranz-Abnehmer verwenden und diesen mit dem Hinterrad in einen Schraubstock spannen und dann das Rad gegen den Uhrzeigersinn drehen, so geht das lösen ohne großen Kraftaufwand am besten.

A voir dans le temps, excellent pour le remplacement d'une roue libre e-bike 14/28. Pour le montage, compter 1h en prenant son temps. Permet d'obtenir une vitesse de pointe plus importante et plus de résistance au pédalage sur le dernier rapport.