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Messages - david.platt@mac.com

#1
RadCity / Re: Rad City 5 reliability?
August 31, 2023, 09:53:33 PM
This is our second season with two of the rad city 5 + high step.
The battery?s are removable so you can keep them from freezing or getting too hot.
We use the battery terminal cover. The battery is 675 watts which is not bad with decent range and is also of good quality.
The motor is max 500 watts but cadence triggered throttle assist cut off can be raised from 25 Kmph to 40.

I can?t imagine for that price you could do much better.

We really like ours.

We ride ours up and down hills and find the disc brakes adequate.
It would be simple to upgrade them.
If you can get the seat post shock and get some SCHWALBE tires.


Quote from: Harhir on December 25, 2022, 04:45:03 PM
There is a Rad City 5 bike for sale in my neighborhood. Less than 20 miles on it  and seller is asking $1k. Also comes with a front basket.
Seller got this bike from Rad for an online review and Rad did not want the bike back. He is trying to sell it now.
Anyhow I am trying to find out how reliable they are since I will not have any warranty. I have read that there have been issues with the controller and mushy hydraulic brakes. Plus as I understand Rad uses a proprietary battery on that bike. I am just not a big fan of any form of proprietary stuff on bikes.
I am just trying to find out what to expect and if there could be any expensive traps. I always buy used bikes and always fix them up myself but my experience with e-bikes is limited so far.
Thanks
#2
So, while I can't say it was the tires "fault" I hit some deep/loose gravel, I lost traction and broke my clavicle. Have not rode since August 19th - big sigh. I was being super careful (was all done doing my stupid stuff) but these bikes are big fast and heavy (all terms meant as compliment) so it can happen.
[/quote]

Sorry to hear about your spill!

The tread pattern, which is the same on the EVO and on the e-bike version doesn?t wash out on sandy or loose pea gravel nearly as much.

Same compound and tread pattern.
It is a tremendous difference, even only being on the rear wheel.

#3
40 nm or 29.5 ft lbs.

I used lock tight blue on the screw holding the torque arm.

Also don?t forget to replace the zip tie as others have seen their power cable ground up in the brake rotor.

#4
Service & Repair / Re: Battery terminal grease
September 07, 2022, 10:26:08 AM
Just a quick bump to get past the spam.
Is there an active admin here to delete it?
#5
Service & Repair / Re: Rear wheel not running true
September 04, 2022, 11:23:29 AM
Torque on the main rear wheel bolts is 40NM or about 29.5 ft lbs.

The bolts are hollow on one side do not over tighten.
#6
General Chat / Re: Winter eyewear?
September 04, 2022, 10:58:01 AM
Our helmets came with a lexan eye Sheild and padded ear flaps.
They are the abus pedelec 2 ACE.

In the summer we remove both the Sheild and the ear flaps.
Note:
All the mounting hardware for the eye Sheild can be reattached so it doesn?t get lost.

These helmets are extremely comfortable with a lot of ventilation.

Only the ACE model gets you the cool Sheild.

#7
Service & Repair / Battery terminal grease
September 04, 2022, 09:50:19 AM

eBike battery connection problem-Electrical connector grease case study


https://support.newgatesimms.com/ebike-battery-connection-problem-electrical-connector-grease-case-study/
#8
Quote from: JoeSoMD on September 03, 2022, 03:46:42 AM
Here's replacement tire options for the RadCity 5+ that I've researched.... my application is that I use my RC5+ as a daily commuter (31miles round trip).

Schwalbe
Marathon E-Plus
Bead: Wired | Colour: Black-Reflex | Compound: Addix E | ETRTO: 50-584 | Inch: 27.5x2.00 | Quality: Performance Line | Seal: Tube | Version: Smart DualGuard  67TPI  1170 grams
Product number: 11159057.01
They go for $65 each.
They have an E-50 rating (suitable for pedal / electric's) up to 50kph (30mph) continuous {E-BIKE 50KPH (E-50) indicates that tire has passed the ECE-R75 E-Bike certification for E-Bikes with speeds up to 50 kilometers (30 miles) per hour.}
I've also used Schwalbe tires on my "pedal only" commuter bike, prior to getting the E-bike, and have been very happy with them.

Would appreciate if anyone has found other options.  I've not been able to find a source for the Vee Tire Company tires that came with the bike, and the 27.5x1.95 Kenda's being sold by Rad Power as replacements don't seem to be in the Kenda system anymore, but a similar Kenda seems to be their Kwick Drumlin K1216E product 214215 27.5x2.00 51-584   65psi 60TPI   SINGLE K-SHIELD PLUS   WIRE 1463?73g.  These have an E-50 rating too and cost around $39.  They are 300g or so heavier than the Schwalbe Marathon E-Plus.  I personally wouldn't mind the extra weight.

I have this on my back wheel. Marathon Mondial, it is significantly lighter than the E-Plus and almost twice the price. This tire is only e-25 rated but I always average a speed slower than that. This is a great foldable spare tire : the Kevlar bead makes putting them on easy. Both of these marathon tires have exactly the same tread. This tread is especially good for when safety means driving onto the soft shoulder and fish tailing is all but eliminated. I run it at 67 lbs to allow some room if there is expansion on hot days.

50-584   27.5x2.00   DD, V-Guard   Tube      E-25   Addix   Black-Reflex   2.5-5.0   35-70   780 g   67      11600785.01   Evolution Line   US$89.00
Index: -
Tube: -
Profile: HS428
Ean: 4026495872812

#9
Quote from: JoeSoMD on August 21, 2022, 08:42:39 AM

I think it is noteworthy that the tires on the RC5+ are furnished with a tube-puncture preventing material/liner on the inside of the tire that is supposed to protect the inner tube.  An interesting thing is that the manufacturer of the "liner" states that the tire pressure needs to be reduced.  To 55psi from memory.  This is not reflected in any of the Rad Power guides AFAIK.
They don?t include a puncture resistant liner like Tanus  https://m.media-amazon.com/images/I/51s-90LyRTL._AC_SL1024_.jpg

vee tires are quite solid : over built old school county tires. With a super thick simple rubber side wall.

They may have a tough carcass so in a sense puncture proof.

But not tanus armoured.

I have 700km of hot summer riding starting at 63 lbs to allow some expansion. They are perfect and give me better range.
#10
Shimano MF-TZ31-7 Speed MTB Bicycle Bike Cassette Freewheel Screw-On 14-34T

Like only having 1 to 5.5 speeds.

Anybody try this yet.?


The RadCity 5 + has a 11-34T and 11-13-15-18-21-24-34 front is single ratio of 46T


Anybody find anything other than the OEM unit that is still 11-34T. ?
#11
RadCity / Re: New Tires
September 01, 2022, 11:18:58 AM
#13
RadCity / Re: Rad City 5 Wattage for each PAS?
July 11, 2022, 11:52:38 AM
We typically tour at less than 25 km per hour. But!
Some weird soft limiter at 32 km per hour kicks in.
That is the weird wimpyness you are describing.
If you raise the power assistance level to 40 kmph or change the power Assistance from 20 to 25 mph.
The bikes power and your natural power will seem more evenly matched and takes that 500 watts further believe me.
Ps   for parents or long distance bikers one can always turn the watts down to 250.
#14
RadCity / Thinking of water bottles
July 07, 2022, 04:04:13 PM
RadCity5 + step over.
Where do you all keep a water bottle on that particular one. ?
#15
RadCity / Re: Nice tire, great price RC5
July 04, 2022, 08:30:06 PM
I got the lighter e-25 Schwalbe Marathon mondial evo.
They are only 798.32 grams. Incredibly sturdy also.
Massively thick tread.
The Marathon e-plus are 1170 grams so that?s a big difference.
The e-plus have a e-50 rating but with the exact same outer tread as the mondial.
Wonderful tires both that have decent gravel chops without loosing all efficiency.