552LikesNew IRIS by AME
12-01-2022, 07:39 PM
#257
Asking the questions to help decide whether to buy or not. Buy to find out is not the way 
12-01-2022, 10:26 PM
#259
upper "bulkhead" isn't lined up with the eccentrics (the eccentrics are further inboard and looks to be inline with the top deck); so maybe shim under there.
12-02-2022, 01:05 AM
#260
I agree completely. Those pulleys are super light. But I think that rotational inertia is what the other person was thinking of.
Hopefully the manual gets uploaded soon. I'm quite curious to see how the lower arms attach, how long they are front inner to outer pivot and how easy/difficult it will be to make roll center adjustments.
Hopefully the manual gets uploaded soon. I'm quite curious to see how the lower arms attach, how long they are front inner to outer pivot and how easy/difficult it will be to make roll center adjustments.
Arm length:
12-02-2022, 08:57 AM
#263
The engineering term is called friction.
There's no benefit to having the battery/motor mass hanging further out. That increases the polar moment of inertia, slowing down rotation.
There's some potential benefit with the suspension design, but the drivetrain doesn't appear to have any benefits. It'll be heavier and have more frictional losses.
There's no benefit to having the battery/motor mass hanging further out. That increases the polar moment of inertia, slowing down rotation.
There's some potential benefit with the suspension design, but the drivetrain doesn't appear to have any benefits. It'll be heavier and have more frictional losses.
There is a benefit from the battery hangover if you know how to tune and it very well may have been factored into its design.
Thats more of what I was thinking of.
Hes a designer and tinker'er ..... He'll go fast with any car.
12-02-2022, 02:43 PM
#265
Theres friction in every car. But having a bigger pulley will increase tooth engagement vs a small 19t pulley with its strongest point being inline with its center.
There is a benefit from the battery hangover if you know how to tune and it very well may have been factored into its design.
Thats more of what I was thinking of.
I think hes more intrigued by it not being the 'normal' right now.
Hes a designer and tinker'er ..... He'll go fast with any car.
There is a benefit from the battery hangover if you know how to tune and it very well may have been factored into its design.
Thats more of what I was thinking of.
I think hes more intrigued by it not being the 'normal' right now.
Hes a designer and tinker'er ..... He'll go fast with any car.
Though in mod it's mostly irrelevant since they've got an excess of power.
12-02-2022, 04:05 PM
#266
12-02-2022, 04:57 PM
#267
Yes but not without the technical drawings or parts in hand to measure. Rotational inertia is pretty much just mass times radius squared, more complex shapes complicates the math a bit. Friction is going to be approximately 50% more than a 2 belt car assuming equivalent material for the belts, when only considering the central part of the drivetrain. If you include the wheel bearings etc too it'll be less than 50% more.
12-03-2022, 02:37 AM
#268
Ahem... 
Although in fairness, its the same idea that was on the original Kickstarter from back in 2015.
https://www.kickstarter.com/projects.../?ref=kicktraq
Scroll down to about half way, and you'll see arm inserts.
On the topic of arm mounting. Pretty sure the arms are on a split pin style, and held captive with grub screws. If you look at underneath shots, there are three grubs inside the bulkhead mounting screws. Middle one probably is to hold diff cam in place, and outer two are to clamp the arm hinge pins. Whether there is a way to change the RC, not sure, awaiting the manual to see exactly how this is done.
Although in fairness, its the same idea that was on the original Kickstarter from back in 2015.
https://www.kickstarter.com/projects.../?ref=kicktraq
Scroll down to about half way, and you'll see arm inserts.
On the topic of arm mounting. Pretty sure the arms are on a split pin style, and held captive with grub screws. If you look at underneath shots, there are three grubs inside the bulkhead mounting screws. Middle one probably is to hold diff cam in place, and outer two are to clamp the arm hinge pins. Whether there is a way to change the RC, not sure, awaiting the manual to see exactly how this is done.
12-04-2022, 12:23 PM
#270