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  1. penserv

    Bbs02 48V on 29er - front chainring size?

    I have a 29er with a rear hub GMAC motor, and I recently changed from a 42T front to a 48T and I found it made quite a difference in being able to use the rear sprocket gears more efficiently in an 11-36T rear cassette. With the 42T front I was only using the 3 or 4, maybe 5 smallest gears on...
  2. penserv

    Chain ring too close to frame

    I moved from a 42T front ring to a 48T ring. I bought a SunLite crankset with front and rear chainguards. I had to discard the rear chainguard because it wouldn't fit and rubbed on the chainstay. Even now, the 48T ring has less than 2 mm clearance on the chainstay, but that's plenty for a bike...
  3. penserv

    Nearly finished a custom GMAC DIY

    Just had an interesting experience with this bike. Locked it up and parked it outside a pharmacy while I went in to get my 2nd vaccination and when I came out and started to ride away, man, was it tough pedaling. There was no pedal assist at all. I had to get home just on throttle with some...
  4. penserv

    rechargeable portable pump $35

    I got a Mojietu Lightning rechargeable pump off Indiegogo and I quite like it. It will inflate up to 150 psi and has a memory for the last 5 settings, which is handy. I have one setting for my front air suspension forks and another for tires. It will do schrader or presta valves. I've never...
  5. penserv

    How to Prevent Flat Tires on Electric Bikes

    I just ordered 2 tubes plus a spare and patch kit from BikeInn.com. Their prices are better than ordering direct from Tubolito and they quote in your currency. From what I saw, they seem to have plenty of stock.
  6. penserv

    How to Prevent Flat Tires on Electric Bikes

    What pressure do you keep the tubolito's at? I can be convinced to change out the Tannus inserts if the tubes really are more resistant to punctures. I'd rather hear it from you than the Tubo folks.
  7. penserv

    How to Prevent Flat Tires on Electric Bikes

    I don't understand the preoccupation folks have with rolling resistance and if perhaps using the inserts will increase it. Isn't that why you put a motor on the bike? Sure, my E-bike has more rolling resistance with 29x2.3" tires than my road bike did with 700x25 tires, but so what. The E-bike...
  8. penserv

    How to Prevent Flat Tires on Electric Bikes

    I've got over 300 km on my DIY bike now and I'm starting to get the fine tuning worked out. But this week I had my first flat tire. I got to the golf course and before I could ride home, I had to pump up the tire. I carry a little rechargeable pump, so no big deal. Put in 30 psi and took off...
  9. penserv

    Suspension Seat Posts

    I went with the Satori seatpost, mainly on the advice from this thread. It may not be as good as a Kinect, but it's a helluva lot cheaper. I've only ridden it about 100 km, but I have no complaints about it and it beats the Suntour hands down. Other folks in this thread seem to agree with me...
  10. penserv

    Suspension Seat Posts

    I just received my Satori Animaris seatpost from AliExpress, although I see now that Amazon.com has them back in stock. Both ship direct from China. AliExpress was about $100 Cdn, less than Amazon.com by about $20 or $30, depending on the exchange rate. The Satori has replaced my Suntour NCX...
  11. penserv

    Carrying golf clubs on an ebike

    Here's how they do it at my course. The bag goes in front of the rider and rests on the handlebars. You could do it on a step thru bike. Of course it may increase the Q-factor a tad. Makes it feel like pedaling when you've wet your pants. No experience there, though. Just ancient memories of a...
  12. penserv

    What mirror would you recommend for me

    I've never understood the rationale for putting the flimsiest part on the furthest outside of your bike where it is most prone to breakage. If you don't believe me, how many times do you just lean your bike up against something and lock it rather than hunt around for a proper stand to lock it...
  13. penserv

    End mirrors

    I've tried the bar end mirrors and found that they're just in the wrong places. You sit up so high on an E-MTB that you have to take your eyes off the road to glance down to the mirror(typically left or both sides). After a lot of trial and error, I went to a helmet mirror, which didn't require...
  14. penserv

    How On Earth Are Small Bike Companies Going to Continue?

    In these times, the above statement is one of the best reasons to DIY and build it with the best parts available. When I started my build in December, I was more focused on price, but now almost the sole criterion is availability. It sucks when the only place to get something is from China but...
  15. penserv

    My DIY builds: GMAC, BBSHD, 9C RH212, CYC Photon, ToSeven DM01

    I hear you on the PAS only. I went with PAS because I found an explanation on the internet that said if you just want a certain level of power assist, go with PAS, which suits my riding style. It further said that with a torque sensor, the faster you pedal, the more power assist you get. That...
  16. penserv

    Dual Leg Kickstand

    I think I'll just make a bracket that will fold over the front and rear of the kickstand, as well as over the chainstays. Combine that with a new lock washer and gobs of loktite and it should solve the problem. I'll post photos of the top bracket once I finish it.
  17. penserv

    My DIY builds: GMAC, BBSHD, 9C RH212, CYC Photon, ToSeven DM01

    I've been using Shimano Hyperdrive cranks on my build and I've never had a problem with them coming loose. I always have to use a crankset extractor to remove the cranks as they're on the square taper quite solidly. I just did it again yesterday when I changed from a 42T front ring to a 44T.
  18. penserv

    Dual Leg Kickstand

    I have a BV double leg kickstand, which I like a lot because you can spin the cranks freely without hitting the stand, so you can do gear adjustments or repairs on the side of the road. It's a similar idea to a Pletscher, but I'm finding that when you set it up and it twists, eventually the...
  19. penserv

    Has anyone replaced the lower bike stand with a double leg kickstand?

    I've got a BV double leg foldable kickstand, centre mounted and it works fine on my heavy bike. Only problem is because it folds up on one side and twists when you unfold it, the centre mount bolt is always coming loose. I've tried red locktite, but no success. I was wondering if anyone else has...
  20. penserv

    Statement Regarding Potential CPSC Ebike Law Preemption of 3-class Legislation

    There are some very interesting scenarios laid out here. In Canada, I guess we must be more civilized than the US because nobody is denied health care, nor are they charged for health care (that's not strictly true - Canadians pay more taxes than Americans). As far as being sued, again it...
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