pkinpdx
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pkinpdx last won the day on February 12 2022
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Location
Portland, Oregon
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EUC
Sherman MAX, V10F. (Past wheels: Mten, KS 14S, S18, V12)
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pkinpdx started following KS-S20 Tire Discussion , Begode EX20S 3600wh: 100V, suspension, 104lb , What's the worst response you've had on an EUC and 2 others
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Begode EX20S 3600wh: 100V, suspension, 104lb
pkinpdx replied to RagingGrandpa's topic in Begode (Gotway)
I have the City Grip 2 90/90 -14 on my Sherman Max. I had to shave at least 4-5 mm off each side to make it work. The Sherman Max width is something like 89mm so the city grip pushes 100mm before any shaving.- 572 replies
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Only with tire shaving. I ended up taking a good chunk of rubber off each side. For me it was worth it as I have the ultimate long range road tire now. It protects the rim, smooths bumps, and carves like a dream at 40mph.
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Ewheels Shermax shipped with LiTech Sam50 packs. There were no other options.
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What's the worst response you've had on an EUC
pkinpdx replied to TantasStarke's topic in General Discussion
I had someone yell across the supermarket parking lot... "Go back to the future!" -
catalog 18x3 street tires (MSuper's, Shermans, S22, etc)
pkinpdx replied to RagingGrandpa's topic in Tires
I dont. I would say there is a better chance it fits on the s22 without trimming. When Eevees was in town on their demo tour we put the Sherman Max nose to nose with the s22 and its tire was like significantly wider. Almost 1/2 inch wider and still room on each side. -
So my non expert opinion on why: If tires have different diameters then the ratio changes from motor output. Bigger tires feel less torquey. If the tires are equal in diameter then the lighter tire will feel like it has more torque because it will be easier for the motor to accelerate (or decelerate) rotation. Many of the moto tires are reinforced which adds lots of weight. on the other hand the reinforced tire will be much safer to run at lower psi for more control and grip (more surface area of the tire in contact with the road) because they are less likely to be pushed in to dent the rim.
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Its hard to say exactly what the ride comparison would feel like without knowing what tire you are thinking about switching to. I have ridden my Max with the stock knobby (only about 60 miles), the Pirelli Angel (about 100 miles), and the Michelin city grip 2 (about 200 miles and counting). To me the knobby feels bouncy but still stable at speed when going straight but on turns it dives a bit and i cant stand the slippy feeling of the knobs flexing as you turn hard. The Pirelli felt really good at low speed (agile and great grip). It is also smaller than the knobby so it increases torque even more and is super efficient as the rolling resistance is way down. However, it being small gives you less clearance (i had major pedal scrapes on turns) and is so stable at high speed (35+ MPH) that its hard to get into turns. My current city grip 2 is as big as the knobby but does not have any flex (just standing on your EUC flattens the knobs so you get a smaller tire) so it rides bigger. It has a better round profile than the Pirelli so its easier to turn at high speed and has better clearance so no pedal scrapes. It is heavier and bigger so I'm guessing its a little less efficient than the Pirelli. I also feel like a lost a bit of torque compared to the Pirelli. There are trade offs for every tire.
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catalog 18x3 street tires (MSuper's, Shermans, S22, etc)
pkinpdx replied to RagingGrandpa's topic in Tires
Sherman Max has the same inner step which causes that fitment issue. When i was putting the City Grip on it was trying to do the same. I pulled it off- put dish soap on both the inner bead and the edge of the shelf and then inflated to 80psi. Plopped on with perfect position. -
catalog 18x3 street tires (MSuper's, Shermans, S22, etc)
pkinpdx replied to RagingGrandpa's topic in Tires
I had the Pirelli angel on for the about 150 miles prior to it. It is nimble and fun but had a few drawbacks for me. The profile is fairly flat in comparison to the City Grip 2 so at speed (35 mph or more) it takes a significant effort to get it off center to carve. It is also very small in comparison so your pedal height is lower, leading to scrapes on hard turns. I do agree that the Pirelli dampens vibrations and is very smooth after hitting bumps but it has an initial sharpness to the hit that the city grip 2 doesn't have. City grip 2 makes all bumps seem smaller and less dramatic. I find that I can just ride seated through just about everything with it. -
catalog 18x3 street tires (MSuper's, Shermans, S22, etc)
pkinpdx replied to RagingGrandpa's topic in Tires
I got the City Grip 2 90/90-14 to fit on my Sherman Max. I did have to trim a significant amount of rubber of to make it work though. Its strange how big the tire feels. It still feels nimble and is easy enough to throw around due to its very rounded profile but the ride feel makes it feel more like a monster pro. It just sort of rolls over everything. bumps feel less significant. Its still pretty early as I have only gone 70-80 miles on it but so far its exactly what i was hoping for. -
I stuck the s20 tire nose to nose with the standard kenda on a the Sherman Max. s20 tire looked 1/4 to 1/2 inch wider. I would guess that 90mm should fit fine.
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I hit 35 a few times but I didn't ever throw big carves at that speed. I didn't even think about it since I am mostly interested in the wheel for off road. I would assume you could do better for that specific type of riding with the widest moto tire you can find. I think the City Grip series is just a bit too wide for sherman's so would probably be perfect.
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I have ridden K66 on the S18 and loved it. That being said, K66 would feel like a pizza cutter tire in comparison. I don't think you realize just how wide the new knobby is. When you put it up next to the Sherman Max with its kenda, its at least 1/2 inch wider. I'm not sure it would improve things to lose an 3/4 an inch of width on the tire. I also got used to the stock knobby within a couple minutes and it felt great on the road and unbelievably great off road.
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Ah so its the lower voltage that is plugged into the formula. Thanks!