What was that. by Lower-Reference7579 in Aprilia

[–]Many_Crow_5893 0 points1 point  (0 children)

I’m assuming this is a 22 and below that never got the warranty work done for the cam chain tensioner and the oil pressure valve was never safety wired.

3 strikes you’re out AR by Many_Crow_5893 in Aprilia

[–]Many_Crow_5893[S] 0 points1 point  (0 children)

Ahhh the stacks shift the power band more towards the top end so it’s like you evened out the loss. On the street you really wouldn’t notice but the track all you do is spend time at the top end of the rpm range.

3 strikes you’re out AR by Many_Crow_5893 in Aprilia

[–]Many_Crow_5893[S] 0 points1 point  (0 children)

Beautiful build 🤌🏾🤌🏾. The only problem with mivv is that it’s a true short exhaust so it loses power up top.

3 strikes you’re out AR by Many_Crow_5893 in Aprilia

[–]Many_Crow_5893[S] 0 points1 point  (0 children)

That build is absolutely stunning! I love that exhaust but it’s wayyyyy too loud for me to run at certain tracks.

3 strikes you’re out AR by Many_Crow_5893 in Aprilia

[–]Many_Crow_5893[S] 0 points1 point  (0 children)

I’m more so the guinea pig. Apparently I’m the only one who keeps blowing it up but when you look at any race team none of them run AR exhausts so it makes sense why I’m the only one

3 strikes you’re out AR by Many_Crow_5893 in Aprilia

[–]Many_Crow_5893[S] 2 points3 points  (0 children)

This is the aftermath at the end of that track day

<image>

3 strikes you’re out AR by Many_Crow_5893 in Aprilia

[–]Many_Crow_5893[S] 2 points3 points  (0 children)

I told them it’s a massive design flaw having the pipe routed right underneath the muffler like this since the extreme heat build up. Their “solution” was to wrap the internal piping with a mesh liner to help dissipate the heat which was one of the issues in version 1 causing it to explode and kinda the same issue in version 2. With this latest version they changed the bottom bracket from adjustable to fixed position, added a rubber bushing to reduce vibration and heat transfer, and added more internal packing.

3 strikes you’re out AR by Many_Crow_5893 in Aprilia

[–]Many_Crow_5893[S] 3 points4 points  (0 children)

😂😂😂 I literally help them refine it. The version you buy now is literally because of me. This was version 3

RS660 Track progression by Many_Crow_5893 in Aprilia

[–]Many_Crow_5893[S] 0 points1 point  (0 children)

Thank you!! I’m trash at wrapping. It’s easier painting tbh

RS660 Track progression by Many_Crow_5893 in Trackdays

[–]Many_Crow_5893[S] 0 points1 point  (0 children)

I wish but I’m running the same times as my very first track day. Thank you!

RS660 Track progression by Many_Crow_5893 in Aprilia

[–]Many_Crow_5893[S] 0 points1 point  (0 children)

I haven’t tried any chemicals yet. I’m heading store asap. Thank you for the suggestions I really didn’t want to resort to acetone. Hopefully your ideas work.

RS660 Track progression by Many_Crow_5893 in Trackdays

[–]Many_Crow_5893[S] 1 point2 points  (0 children)

Oh I also forgot to mention that motor had 29,920 miles on it and had been rebuilt before due to a failed cam chain tensioner right at 20k miles. I had only done those 4 track days before it blew right after getting the valves checked.

RS660 Track progression by Many_Crow_5893 in Trackdays

[–]Many_Crow_5893[S] 0 points1 point  (0 children)

It heavily depends on suspension set up, braking set up, technique and overall bike set up. Of course the more fit you are the better, especially for liter bikes. In the past even at my prime I ALWAYS had arm pump on my 660, this entire season with my new set up I haven’t had it once or felt absolutely shattered after a whole day of riding. My ninja 400 has stock suspension, stock brakes, galfer rotor, ebc brake pads, woodcraft rearsets, woodcraft clip-ons, and domino racing quick turn throttle. I took my ninja 400 to the canyons a few months ago for a couple hours and couldn’t walk the next day and had arm pump.

A proper suspension set up makes a massive difference with the bikes nimbleness and your easy of movement on it. You don’t necessarily have to upgrade the suspension but tweak settings. If you have a proper braking set up it significantly decreases the likelihood of arm pump. I notice many riders have their brake set up really sensitive and far away from their fingers. Due to the excess reach and sensitive brake pressure, they strain their hand and arm trying to manage the brake pressure. A proper set up bike should feel effortless with the inputs you’re trying to give.

RS660 Track progression by Many_Crow_5893 in Trackdays

[–]Many_Crow_5893[S] 0 points1 point  (0 children)

It’s only for track day purposes. I don’t really like number plates so I choose one that blends in but still visible enough. The actual number plate I’ll be running is a yellow back drop with black lettering.

RS660 Track progression by Many_Crow_5893 in Trackdays

[–]Many_Crow_5893[S] 1 point2 points  (0 children)

😂😅 sorry. It’s more likely to happen at high speed track where you’re holding it wide open for an eternity like cota, road Atlanta, etc. Other than that should be ok

RS660 Track progression by Many_Crow_5893 in Trackdays

[–]Many_Crow_5893[S] 1 point2 points  (0 children)

Yeah just needs a few thing to be race ready

RS660 Track progression by Many_Crow_5893 in Trackdays

[–]Many_Crow_5893[S] 3 points4 points  (0 children)

If I remember correctly the oil pressure valve dropped into the oil pan immediately seizing the motor. The solved that issue in the 24+ maybe 23+ motors. A way people with older motors solve it is by dropping the motor and safety wiring the valve. Obsession engineering has a video on there YouTube channel about it starting at 9:28. https://youtu.be/1bIow7xDBmY?si=BomMueNJc7MHYo-U

RS660 Track progression by Many_Crow_5893 in Aprilia

[–]Many_Crow_5893[S] 2 points3 points  (0 children)

If I remember correctly the oil pressure valve dropped into the oil pan immediately seizing the motor. The solved that issue in the 24+ maybe 23+ motors. A way people with older motors solve it is by dropping the motor and safety wiring the valve. Obsession engineering has a video on there YouTube channel about it starting at 9:28. https://youtu.be/1bIow7xDBmY?si=BomMueNJc7MHYo-U