How fast is the RS660? Tuned Aprilia Supertwin on the Dyno, and getting ready to race.

[@ChrisVanMiddelkoop]

I love this channel. So important for anyone that has an aprilia.

[@scottieturbo87]

These videos are awesome. I have had my 660 since 23 but in the process of converting to a full track bike this winter. Timing of these have been perfect for me 👍🏼n

[@mikecain565]

Another good one Dave, Spent a 2 & bit hours hours yesterday, Having a good old laugh & trip down over the years, Watching the Vlog chasing the racing, With yourself & dom, It was really good. & would recommend it to anybody to have a look at, Have a good Xmas all of you, And look forward to your adventures next year,

[@obsession_engineering]

Thanks 😁 it was good fun to record the podcast with those boys

[@missydee6085]

Crackin' job. Have a lovely festive period Dave; and here's to a forthcoming year of more laffs, boss-spannerage & brilliant content. 👌

[@davidsampson3537]

Merry christmas Dave and Rob another great video wish you both a happy and wonderful 2025 x

[@PhilipBowman-h7t]

Brilliant videos Dave , and also your bsb ones are great , 👍🏽👌🏻

[@nickrider5220]

Nicely done Dave and Rob 👍🏻

[@pokechopracing8862]

Thank you Dave for another great episode it will be interesting when you can compare the 2 I’m guessing yours will do a bit better lol. Hope all is well and Cheers from Sunny Southern California!!

[@obsession_engineering]

Actually, with the dymags and newer callipers, this one might just do the business

[@PhuManchew]

Good timing, I've been thinking about getting this bike. Where I live, more than 120 HP is not going to be used very often.

[@obsession_engineering]

They are great fun

[@rayshaw7446]

Great work, best wishes racing next year.

[@mikefandango294]

A real insight into claims of new bike manufacturers and actual facts of HP? Once again Dave putting into layman’s terms for us real world public!

[@jas21scot]

Brakes the great equaliser .. 💨💨💪

[@robertwhite7906]

Excellent video Wavey Davey 😁 have lots of Excellemce over the festive break 👍🍻☘️

[@Matt-we7si]

really awesome stuff, would love to see you build a CB 500 race bike , they are super fun like you wouldnt believe

[@moto.moritz3957]

Nice Video👍👍👍

[@mayhemmayo]

THANK YOU. KEEP UP THE GOOD WORK

[@ragnarironspear1791]

Been waiting for this one 👍🏻👍🏻👍🏻🇬🇧

[@firestorm755]

Bloody hell that sounds good

[@badtsersc2]

Hey absolutely love these videos, run my own rs660 aswell. Is it possible to get a full parts list at some point? Especially the rear brake setup is something I would love to copy myself

[@obsession_engineering]

It's a HEL master cylinder onto the stock caliper, easy. You'll just need a loooong line to go between

[@barry5138]

Dave and Hollyoaks 👌

[@Jaded-Wanderer]

Another great video

[@anfieldroadlayoutintheloft5204]

Nice job

[@laurapeters8686]

Looks ace Dave 👍🏻 hope Rob got an extra chocolate for working in the cold 😂

[@ManxAndy]

Good evening Dave…..Obssesion bobble Hat is keeping me well warm….I’m tempted for the Hoodie next….Merry Christmas 👍🇮🇲😉

[@obsession_engineering]

I can highly recommend all the merch options 🤣

[@chrisdunham2911]

I got 156mph out of mine running Gabro UpMap, Gabro stacks, Sprint P08, Akrapovic exhaust and a splash of octane booster.

[@obsession_engineering]

On the dash, or on GPS/speed trap?

[@davegreenslade4539]

@@obsession_engineeringdown the pub 10 pints of Guinness in 😘

[@chrisdunham2911]

@obsession_engineering on the dash. Stock gearing with mirrors, lights, and stock fairings. Dunno if that matters

[@RumblestripDotNet]

So roughly 110-112 hp at the crank for your bike. 10-12% drivetrain loss equaling the 99 rear wheel registered on the dyno.

[@philipwoodall3066]

This is a DynaPro Dyno. (Best Dynos in my view) If you look in the lower right of the graph it says DJHP . This means it is reading similar to a Dyno Jet or what I refer to as Fudged Crank Power. ( since it is not possible to measure at the rear wheel and get accurate crank power - only an approximation) If you uncheck the DJHP selection you get genuine Rear Wheel Power which on this dyno will be about 12% less ie about 88.5HP

[@jessefpv9217]

They sell these down the road called HBR power sports there about 7k usd. Think they would be a good street track bike?

[@TumzDK]

Only one lambda sensor on these engines? Is it not possible to map each cylinder individually?

[@obsession_engineering]

There's a lambda in each header, but we only built a single map as the dyno only has one lambda feed

[@linuxpyle]

I can't speak to how it goes but it absolutely sounds the business!!!!

[@gabroracing]

Sportbike have throttle limited to 85% that is probably why there is that 100hp difference

[@obsession_engineering]

As I'm sure you know Gabro, the last 15% on a stock engine only makes about 1 bhp, and we've run similar tests on full power standard engines, the difference is always around 10bhp

[@AllenTodd]

what was the final weight savings with this build?

[@obsession_engineering]

I didn't actually weigh it, but from experience I'd estimate 150kg, +/- 2

[@DMNThieu]

Why would you go with a piggy back vs a direct ECU tune?

[@obsession_engineering]

Easier, and we know the system works

[@DMNThieu]

@obsession_engineering Well, my buddy owns Open Flash Performance if you’d like to get introduced, let me know. Hi dyno tunes are better without the extra hop and weight.

[@jacktupp1427]

Why is it everyone refers to Hp? Yes it's a thing, but where and how an engine make its power is far more important! For example, 100hp & 35 ft-lb of torques is nothing compared to 85hp & 60 ft-lb of torques. Making a 100hp at 11,000 & 35ft-lb at 9000. What's that = no mid range or bottom end, or top end for that matter! Let's start hearing where and how much torques are made! In my opinion.