Gearing change for Moscow

[TheEqualiser]

It was new chain time and I figured it was a good idea to change the freewheel as well. Leon Cycles sell the replacement 7 speed freewheel cheap enough but they really aren't great. I also wasn't particularly happy with the gearing, especially at the top end so I decided to put a Sunrace MFM4S (13-34) wide range 7 speed freewheel on as a replacement and I am really pleased with it. The jump between 1st and 2nd (10T) is quite big but I don't really use 1st unless I'm going up 15%+ climbs and in 48-13 I can happily get to 50km/h (30mph), where possible, without pedalling too madly. As @Sierratim will remind everyone - make sure you buy a freewheel as a replacement and not a cassette. And if you go for the MFM4S you will need a longer chain too - I bought a KMC 8 speed and took two links out of it.

 

[RJC]

It was new chain time and I figured it was a good idea to change the freewheel as well. Leon Cycles sell the replacement 7 speed freewheel cheap enough but they really aren't great. I also wasn't particularly happy with the gearing, especially at the top end so I decided to put a Sunrace MFM4S (13-34) wide range 7 speed freewheel on as a replacement and I am really pleased with it. The jump between 1st and 2nd (10T) is quite big but I don't really use 1st unless I'm going up 15%+ climbs and in 48-13 I can happily get to 50km/h (30mph), where possible, without pedalling too madly. As @Sierratim will remind everyone - make sure you buy a freewheel as a replacement and not a cassette. And if you go for the MFM4S you will need a longer chain too - I bought a KMC 8 speed and took two links out of it.

Can I ask if yours is a standard or plus moscow? What display and battery are you using?. Not seen anyone who can get 30mph from one.

 

[TheEqualiser]

Can I ask if yours is a standard or plus moscow? What display and battery are you using?. Not seen anyone who can get 30mph from one.

Standard Moscow with the standard 48V battery, a 250W motor and the off road C7 display. Anything above 20 mph is me pedalling (no assist by then).

 

[kmccune]

Any way to bypass that silly cut off point?

 

[TheEqualiser]

Any way to bypass that silly cut off point?

It's not really a cut off as such, it's just the amount of power that is available from that motor/controller combination. I think some people have experimented with changing the motor and/or controller but I am not sure how successful they were.

 

[kmccune]

It's not really a cut off as such, it's just the amount of power that is available from that motor/controller combination. I think some people have experimented with changing the motor and/or controller but I am not sure how successful they were.

Controller should be first thing, 15-22 amp controller would probably give the motor all it can use, the best use of limited wattage would probably be mid drive, some of those restricted hub drives are more than likely derated, the Hub drive motor on the XC100 is ridiculously tiny, I do not understand why Eahora, would sale that bike for a hilly area.( I know we were talking about the Moscow-I just mentioned in passing how different manufacturers would derate their products .Eahora offered to sell Me an 18 amp controller for $79(with after the $20 discount)
I finally sold the XC100 to a flatlander for $400 with 8 miles on it, I figured buying another controller would be throwing good money after bad,it was a shame too,I really liked the bike, it turned out to be useless for my situation, the company wasn't very helpful, just mentioning that 198# overloaded the bike( really?)

 

[zzRider]

Controller should be first thing, 15-22 amp controller would probably give the motor all it can use, the best use of limited wattage would probably be mid drive, some of those restricted hub drives are more than likely derated, the Hub drive motor on the XC100 is ridiculously tiny, I do not understand why Eahora, would sale that bike for a hilly area.( I know we were talking about the Moscow-I just mentioned in passing how different manufacturers would derate their products .Eahora offered to sell Me an 18 amp controller for $79(with after the $20 discount)
I finally sold the XC100 to a flatlander for $400 with 8 miles on it, I figured buying another controller would be throwing good money after bad,it was a shame too,I really liked the bike, it turned out to be useless for my situation, the company wasn't very helpful, just mentioning that 198# overloaded the bike( really?)

Rated carrying capacity for the XC100 is below...from their "specifics" section of eAhora XC100 webpage. I never saw this when choosing this bike. I weigh 205 lbs. The AM100 is rated at 198 lbs and the 2 fat-tire bikes are 220 lbs. No wonder I can't reach the stated max speed of 28mph. Best I can get is 22. Gonna try that controller upgrade if I can get eAhora to give me that discount you mention.

Carrying Capacity​

187lbs(85kg)​

 

[kmccune]

They should, I think you have to talk to an associate or computer.( during one of the earlier posts somebody even got it cheaper than $79) try customer service.)

 

[Decrepidude]

It's not really a cut off as such, it's just the amount of power that is available from that motor/controller combination. I think some people have experimented with changing the motor and/or controller but I am not sure how successful they were.

I would argue that it is a cutoff, and more power is indeed available. with the same controller and motor, the Magnum Peak uses a differently programmed C7 display to allow a 45kmph/28mph limit, in fact I think you can wind it all the way up to 99, of course the bike craps out long before that. also, different parts of the world have different limits, Europe is oddly strict with low speed limits, and restrictions to 250W motors, along with hefty fines if you're prosecuted. Similarly Australia and UK are restrictive.