Hillhater wrote:good looking and good value bike George.
On a separate note, someone needs to "play" with one of these to see how it responds to a few more volts & amps
dansitarz wrote:I have an RMartin R11 (which is the same as an R10 but without the rear suspension). My LiFePO battery pack stopped holding a charge after about 1000 miles (about 100 charges). I sent it back to RMartin, and they tested it and agreed, but were unable to repair it. I was just out of the warranty period (1 year), so I wound up buying a new battery pack (which they sold me at cost since the first one failed just past the warranty). Anyhow, I'd like to repair or have someone somewhere try to repair the first battery pack. Does anyone on this forum have any ideas or know anyone who can test/repair such a pack. It's a 36V 10ah LiFePo4 battery pack. I can't tell the manufacturer right off hand. Thanks for any help.
dansitarz wrote:I have an R-11. I'm 6'1", 250# and it has no trouble handling me. I can cruise, while pedaling, at 15 mph on rolling terrain. On hills, I need to use the normal bike gears (it is a 7 speed). I've had the bike for over a year and it is a well-built bike. I did have some problem with the battery, but have since gotten a new one which is now working fine. It is a heavy-duty bike. In retrospect, I should have gotten the R-10 for the disk brakes and the rear suspension, but my brakes work fine and I have a suspension seat post I've used hub motor electric bikes and the R. Martin is, hands down, a better, quieter, more powerful (for a 250 watt) motor. I would definitely say your size and weight would be no problem. Good riding!
dansitarz wrote:The battery that came with the R-11 was a 36 volt lithium ion. It was supposed to have at least 800 recharge cycles. I got maybe 100 before it failed to hold a charge for more than 10-15 miles. I contacted R. Martin and my battery was beyond the warranty (1 year; I purchased the bike and then wasn't able to ride it for about 5 months). Anyhow, their customer service tried to help; had me send in the battery to see if they could deep discharge and then recharge it and check the cells etc. Nothing worked to repair it; so they offered to sell me another new battery at their cost, which I took them up on. I thought that the offer to sell at cost was decent on their part, tho I'm still a little put out that the original battery didn't do better. I've tried to find someone or some company that could still do some more checking on the original battery, but, as you did, I find some of the forums less than helpful.
dansitarz wrote:As I noted, the R-11 does not have the rear shock and I use a seat post suspension. But I can see how the R-10 rear shock could be an issue for you (and me, as well). What type of mid-mount motor are you considering?
trex wrote:Here's a web site with the mid-mount motor for the Yuba Mundo...http://gobiketrip.com/blogs/urbancommut ... ersion-kit
There is also a Thread on this forum concerning Yuba Mudo ebike's with the mid-mount motor... I think they just came out with this kit, this year.
georgefromvt wrote:Quote "Hey Mr. dans.... My concern with the R10 would be the rear shock...I don't think it's big enough to carry my weight, of 230 Lbs. My girlfriend has a Mongoose Mtn. Bike with a rear shock and I "bottom it out". I think I will call the company, and ask them. I sent a message to them, from their web site, but never got a responds. The other option would be to replace with a larger shock, if I exceed the weight limit... Here's a pic of my cargo bike, it's a Yuba Mundo... I'm thinking about mounting a "mid-ship" e-motor on "her". If I did this, I would buy the R10 for my girlfriend."
Trex. I understand your concern but I am almost as heavy and my R10 rides well. I am 210 in boxers but easily tip the scale at 230 fully dressed especially considering Vermont's cool climate--heavy clothes are the norm. The R10'S rear shock can be locked so bottoming out is not a worry.
Regarding the DIY kits, yes there are some great kits on the market but for bikers with scant free time, fleeting summers or limited technical abilities an off the rack ebike makes more sense. Three years I go I purchased an expensive well know DIY kit, well I spent more time building and trouble shooting issues than riding. Our summers are very short, I would rather unbox a bike then build one. Good luck and have fun with what ever you choose.
trex wrote:My concern with the R10 would be the rear shock...I don't think it's big enough to carry my weight, of 230 Lbs.
newb wrote:trex wrote:My concern with the R10 would be the rear shock...I don't think it's big enough to carry my weight, of 230 Lbs.
you may have already resolved this concern but i will add m2cw. i bought 1 of these (R10 2009) second hand and ended up giving it to a friend who is right at 300lbs and he had no problem w/ the rear suspension. in fact, for the yr he owned it he only had 1 issue which was shifting up a hill where the chain would pop off. this had to be due to his weight as i never had this trouble. he rectified the problem by not shifting while under power, since then he had no further trouble.
however, after 1 season he sold it and upgraded to a faster and more powerful bike - an old K2 (FS) proflex (which he had), 9c 2807 & 18fet controller which were purchased from other ES members and some free sla's from ES member fishmasterdan - total build cost, $350-$400. i mention this because for 1200 or so dollars the R10 is a great entry level bike and if you plan to use w/in their stated ability you should be very happy. however, if you're going to spend $1200 plus upgrade the battery and controller then you will be better off to build your own bike. do this and i'd bet you'll be happier w/ the results and it will be cheaper. all the answers needed are here on ES, just do the research as most questions have been asked and answered several times over.
georgefromvt wrote:newb wrote:i mention this because for 1200 or so dollars the R10 is a great entry level bike and if you plan to use w/in their stated ability you should be very happy. however, if you're going to spend $1200 plus upgrade the battery and controller then you will be better off to build your own bike. do this and i'd bet you'll be happier w/ the results and it will be cheaper. all the answers needed are here on ES, just do the research as most questions have been asked and answered several times over.
Yes, 1200 dollars is very expensive but the freedom to unbox a brand new ebike and be on the road in less than an hour is worth every cent.
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