Newbie question: TSDZ2 upgrades.
- Thread starter jeff423
- Start date
tomjasz
Well-Known Member
- Region
- USA
- City
- Minnesnowta
David is a stellar reseller and completely trust worthy. Eco would be my first choice in resellers of TSDZ2.
Thanks for that. I have to say that Mark at Electrify Bikes has been better at responding to my emailed questions. Still have heard nothing from Eco. I'm still trying to learn more about the "upgrades".
Thanks,
Maybe Dave reads this forum. At any rate he got back to me last night with two emails which answered most of my questions (and raised a couple more) so I'm on my way. I'm thinking about just going to Nashville and shopping in person.
Hardware question: I currently have a 42 tooth front chain ring and I always feel that I'm pedaling too fast (I bike on mainly flat trails). Could I go with a 50 tooth, and if so do I need a longer chain?
RunForTheHills
Well-Known Member
- Region
- USA
I like to pedal at a fairly high RPM of around 90. You can use a gear calculator to determine what speed you will get in each gear at a particular RPM. I don't know what RPM you are comfortable with, maybe 80? Change the Gear Units on the calculator below to MPH @ 80 RPM and enter your chainring size and select the cassette you are using.
https://www.sheldonbrown.com/gear-calc.html
https://www.sheldonbrown.com/gear-calc.html
I installed my kit and it works great. The biggest problem I had was grinding down the plastic guide for the rear derailleur . On my bike there was only about 3mm clearance. A torque wrench is handy for the cranks and anti-rotation bracket. I had to remove my kickstand for the anti-rotation bracket, but I figured the bracket was more important than that kick stand. I have a different style on order. Last week I test rode a $3700 ebike with mid drive and torque control. I can honestly say the performance of this kit on my old bike is just as good.
Last edited:
PedalUma
Well-Known Member
- Region
- USA
- City
- Petaluma, CA
Nice build. I just saw a great deal on that Nuvinci. It is a custom built wheel with the hub, cog and shifter. 135-OLD. These hubs are infinitely variable, so when someone brags about their 12-speed you can smile back. The 32mm rim will work on a 29er. https://www.ebay.com/itm/193850058248?chn=ps&_trkparms=ispr=1&amdata=enc:1Ty7DpcNkTq-QpWfpBqhUAg42&norover=1&mkevt=1&mkrid=711-117182-37290-0&mkcid=2&itemid=193850058248&targetid=1262407448340&device=c&mktype=pla&googleloc=9032112&poi=&campaignid=12873834706&mkgroupid=117462210850&rlsatarget=pla-1262407448340&abcId=9300536&merchantid=6377484&gclid=EAIaIQobChMI3pGPupGv8wIVRsDICh336QEHEAQYBSABEgKwJ_D_BwE
What single speed chain are you running?
52T ebike ring that i got from Eco Cycle.
PedalUma
Well-Known Member
- Region
- USA
- City
- Petaluma, CA
52 will be fast with the 14. Sheldon Brown says your top end at 80RPM cadence is 43. That is not KPH, that is forty-three Miles Per Hour!
PedalUma
Well-Known Member
- Region
- USA
- City
- Petaluma, CA
Go here: https://sheldonbrown.com/gear-calc.html
52 teeth on the front chainring will be fast when combined with the 14-tooth rear cog on the Nuvinci N360 or N380. When you pedal at a rate of 80 revolutions per minute you will go 43 miles per hour in the highest gear. Cadence is the rate of pedaling or pedaling speed. At a cadence of 90 you will go 51Mph. That is not accounting for wind drag but on a dynamo.
Translation between the lines: In my opinion your gearing is too high for the main bearing in the TSDZ2 and for climbs.
52 teeth on the front chainring will be fast when combined with the 14-tooth rear cog on the Nuvinci N360 or N380. When you pedal at a rate of 80 revolutions per minute you will go 43 miles per hour in the highest gear. Cadence is the rate of pedaling or pedaling speed. At a cadence of 90 you will go 51Mph. That is not accounting for wind drag but on a dynamo.
Translation between the lines: In my opinion your gearing is too high for the main bearing in the TSDZ2 and for climbs.
That's a little better. I don't know what "back sweep motion with a light touch" means. I also don't know what a "Nuvinci" is (are you sure you are responding to my posts?). My cassette is Shimano with the smallest sprocket at 11T and the largest at 28T. My whole drive train was Shimano until I installed the kit. I got the 52t chainring because I like a slow cadence and don't go up any hills. If I encounter a grade I've got 6 other gears.
PedalUma
Well-Known Member
- Region
- USA
- City
- Petaluma, CA
Sorry. I was addressing this build from @Hasaf. Also with a 52 ring and with a similar scenario. My pardon. The TS is a high cadence system. Do not lug it, ever. Pull back on the pedals and up, not down, a swimming motion. Keep it fast. Light. Easy. You will sail.
Hasaf
Member
The reality was that I was downshifting for riding in headwinds, an indication that I was powering out. With normal headwinds of 20-30mph I was seldom getting out of the teens and regular riding placed me between 13 & 17 mph, nowhere near 40.
As stated, under ideal conditions, no headwind or even a slight tailwind and a long run, it would get to about 24mph. this included running with the throttle, which should bypass any "low cadence" issues. using the throttle was primarily in headwind conditions. Normally it would bump my 13mph up to about 15mph. Again, downshifting increased speed, even with the throttle. This was measured with my GPS, the speedometer had no setting that would make it accurate.
I still have the bike with the TSDZ2, it is sitting in my dining room. However, I am now using my Priority Current for commuting. The reality is that it is faster, even without a throttle, on my commute. While the increase in average speed is only about 2mph while moving I am almost never under 20mph, with the exception of 30+ headwinds. However, even in those conditions, I am faster than I was with the throttle equipped TSDZ2. Again, I base that on the numbers from my GPS
As stated, under ideal conditions, no headwind or even a slight tailwind and a long run, it would get to about 24mph. this included running with the throttle, which should bypass any "low cadence" issues. using the throttle was primarily in headwind conditions. Normally it would bump my 13mph up to about 15mph. Again, downshifting increased speed, even with the throttle. This was measured with my GPS, the speedometer had no setting that would make it accurate.
I still have the bike with the TSDZ2, it is sitting in my dining room. However, I am now using my Priority Current for commuting. The reality is that it is faster, even without a throttle, on my commute. While the increase in average speed is only about 2mph while moving I am almost never under 20mph, with the exception of 30+ headwinds. However, even in those conditions, I am faster than I was with the throttle equipped TSDZ2. Again, I base that on the numbers from my GPS
Last edited:
Similar threads
