Cytronex Trek 7300

[Barnowl]

No, they don't generate a lot of heat. I guess the cool air while cycling takes away most of the heat generated anyway. One other reason I charge in the morning is Mark reckons the battery performs better when warm just after charging. Not a lot in it but seems a bit more sprightly first thing.

 

[jerrysimon]

Ok third day cycling into work and I am loving this bike more and more.

I have a question for other Cytronex owners though.

Compared to the Bafang motor in my kit bike the Tongxin is silent.

However when not powered i.e. running freewheel there is a slight sound from the Tongxin. This is best described as like the break blocks are very slightly rubbing on the rims. The brakes are definately not on and I just wondered if other Cytronex owners could confirm this ?

Regards

Jerry

 

[themutiny]

Yup, they're noisy when not powered. Some are far worse than others. Apparently you can take them apart and grease them which helps, but I wouldn't know how. The first one I had was so noisy, I couldn't live with it. It sounded like a steam train. Fortunately for me, Mark swapped it out under warranty. The one I have now is near silent.

 

[HarryB]

Agreed mine is noisier without power, mind you it has got a bit of a squeak with power as well so I think that they vary quite a bit.

 

[Barnowl]

Same here. I don't notice it, even unpowered, unless I listen for it. It first concerned me last year when spinning the wheel at home. I contacted Mark at Cytronex who described it as a slushing sound which I thought described it nicely. It's normal and not an indicaion of a problem.

I've never heard that you can grease the Tongxin nano hub. Not that I have any intention of trying.

 

[jerrysimon]

Thanks guys.

I can live with the noise its still quieter than the Bafang and silent when its powered

Glad to to know all is well

Regards

Jerry

 

[Barnowl]

Four Cytronex owners in a row posting - must be an all time thread record.

 

[matt-derby]

silent

My Claud B Cytronex motor in use is near silent (due to wind speed passing ears probably) and still very quiet when not, the Cannondale I tried at Presteigne was a lot louder without power. I think it depends on how lucky you are with the motor build/age.

One day, however, when reversing my bike around the office building the motor juddered a bit, like it was mid gear change (if that's at all possible) after it's next powered use it was back to normal.

Fast approaching 500 miles on it, should do a review soon!

Matt
Cytronex Claud Butler Urban 500

 

[themutiny]

Both of my Cannondales judder slightly going backwards. Since they both do it, I thought this was normal.

 

[matt-derby]

judder

Hi themutiny,

My motor does judder slightly in reverse, but that day it was a lot louder and more violent. Thankfully it was only that day.

Which motor do you have?

Matt

 

[themutiny]

Hi Matt

I have the 175rpm. I wouldn't want the 190 at the moment, because I only use the motor for steep hills. If I want to go fast unassisted, I use my derestricted torq 1.

Which motor did you get?

 

[jerrysimon]

Just another quick point. My Cytronex came with a rear stand which although worked ened up with the bike leaning over almost at 45 degrees. Unfortuantely it has no adjustment.

Anyway I just got one these which I saw on another Cytronex owners post here.

Pletscher Multizoom Rear Mount Kickstand

BTW my motor is the 175pm one

Regards

Jerry

 

[matt-derby]

175 rpm

I have the standard motor (175rpm) I find on any hill I can only achieve around 12-13mph with pedal assistance, obviously faster with more effort from myself. The 190rpm would probably reduce my hill speed even further.

However, most of my journey at the moment is cycle path/ bridleway (ex train tracks) at a cruising speed of around 17-18mph, the wind resistance and if tyres aren't up to pressure (broken 2 pumps already trying to achieve this) makes the next few mph increase all the more harder. I believe the 190rpm may help me up to about 18-19mph allowing me to probably cruise around 21-22mph.

Would be interesting to know the performance of the 190rpm on hills?

Matt

 

[HarryB]

I have the standard motor (175rpm) I find on any hill I can only achieve around 12-13mph with pedal assistance, obviously faster with more effort from myself. The 190rpm would probably reduce my hill speed even further.

However, most of my journey at the moment is cycle path/ bridleway (ex train tracks) at a cruising speed of around 17-18mph, the wind resistance and if tyres aren't up to pressure (broken 2 pumps already trying to achieve this) makes the next few mph increase all the more harder. I believe the 190rpm may help me up to about 18-19mph allowing me to probably cruise around 21-22mph.

Would be interesting to know the performance of the 190rpm on hills?

Matt

The 190 rpm is better on hills as it is a more powerful motor than the 175 rpm. I don't think you will achieve the 21-22mph without putting in a lot of effort (and you can do that with the motor you have now). I found I would cruise at about 19 mph with a 190 motor and that was with a Li-ion battery so a little bit faster than the NiMH.

 

[jerrysimon]

I found I would cruise at about 19 mph with a 190 motor and that was with a Li-ion battery so a little bit faster than the NiMH.

Interesting HarryB. What Li-ion battery did you use.

Also if you use a third party battery what happens with the 6V supply for the lights

I am very happy with the existing battery just curious really

Regards

Jerry

 

[HarryB]

Interesting HarryB. What Li-ion battery did you use.

Also if you use a third party battery what happens with the 6V supply for the lights

I am very happy with the existing battery just curious really

Regards

Jerry

Not on the cytronex ....on another bike. Gave me my first experience of the tongxin and I have been hooked ever since.

 

[matt-derby]

190rpm torque

The 190 rpm is better on hills as it is a more powerful motor than the 175 rpm.

Hi HarryB,

I was under the impression that the 190rpm had less torque at the advantage of more speed, not just that it was more powerful. Horses for courses so to speak.

I'm sure flecc has mentioned something in the past about this?

Maybe it is more powerful at the cost of battery life? so again if your average journey length is small it wouldn't matter.

I've found that my course could benefit from the 190rpm.

Matt

 

[Xcytronex]

I have the standard motor (175rpm) I find on any hill I can only achieve around 12-13mph with pedal assistance, obviously faster with more effort from myself. The 190rpm would probably reduce my hill speed even further.

However, most of my journey at the moment is cycle path/ bridleway (ex train tracks) at a cruising speed of around 17-18mph, the wind resistance and if tyres aren't up to pressure (broken 2 pumps already trying to achieve this) makes the next few mph increase all the more harder. I believe the 190rpm may help me up to about 18-19mph allowing me to probably cruise around 21-22mph.

Would be interesting to know the performance of the 190rpm on hills?

Matt

My Cytronex was fitted with the 190 motor and test riding this and the 175 wheel around the hills of Winchester I found it to be more powerful.I think unless the gradient is really steep the 190 is the way to as go .You probably have to sign a disclaimer if you opt for the 190 from Cytronex [I did] due to percevied legalities real or otherwise.To achieve 20 + mph you will be doing all the work---top speed for the 190 comfortably around 17-18.5 mph.

 

[Barnowl]

I've been tempted by the 190 myself and come close to ordering one. In practice I think I'd just go a few MPH faster and drain the battery a bit faster. Can't make up my mind whether it's work a couple of hundred quid. I think I'd rather get a spare/2nd battery.


BTW I never push my hub wheel backwards and always pick the bike up if I need to reverse. I believe I was told possibly by Mark it was a bad thing to do . Please correct me if you know otherwise but it don't sound right going backwards.

 

[Xcytronex]

I've been tempted by the 190 myself and come close to ordering one. In practice I think I'd just go a few MPH faster and drain the battery a bit faster. Can't make up my mind whether it's work a couple of hundred quid. I think I'd rather get a spare/2nd battery.


BTW I never push my hub wheel backwards and always pick the bike up if I need to reverse. I believe I was told possibly by Mark it was a bad thing to do . Please correct me if you know otherwise but it don't sound right going backwards.

Funny thing is I do a 20 mile daily commute and always easily did the distance with miles to spare.Also I always rode 'electric' other than down hill -so I never really spared the battery.The best thing was last February cycling home late at night -temperature at -8 with the bike/electrics/battery not even slightly sluggish.