Dez, you have just saved me some skin !! Thanks again big fella !
@pmfpedro1119 сағат бұрын
Hi. I have a Rotax Max 125cc. 10years old. I woul like to change the engine piston. The dealer where I want to buy the pisto ask me the size of the piston. For that I need to take off the old piston to see the size number. Can I buy any size, it will fit on the cylinder? Many thanks. Keep with you great work sharing a lot of knowlege...
@rolli956Күн бұрын
New to the kartingworld, or my son. I have the pleasure of try to learn the mechanical side. For the junior kosmic kart neutral position caster is both arrows to the front. But is it the same to have both arrows towards back ? or should I change them to neutral, both arrows pointing forward? When we bougth the used kart tyres was almost worn out. Still son was driving pretty good.Now we have new tyres...first 2 times to the track everything fine, but third time to the track the kart just slided in every corner and spinning for some reason... I´m still going to check wheel alignement ( no laser ) but can it also be that as you say in the video here that with new tyres and super grip you use negative camber? First I will check the alignement and go to track and see if helps.
@flackotris223Күн бұрын
Gotta come to ovrp. The beautiful karts and builds you see there. Electric builds too!
@T4NKER942Күн бұрын
Can I put a Lo206 on a Tony kart 401R
@abdullatif-fr7vd2 күн бұрын
Thanks for the video bro
@twoone68276 күн бұрын
Hi there Where I can order stuff like that for my go karts.. I’m in Mexico
@CX2917 күн бұрын
Love your videos. Thank you for all the effort you put into making them and the good info you provide! I'm 178 cm tall and 61 kg with all my race gear. I have two Tony Karts, one with an IAME X30 S125 and Komet K2M tyres, the other with a ROTAX MAX EVO and Vega XH3 or XH4 tyres. I'm racing the UAE, so outside temperatures are typically between 30C-40C during the race season. What seat would you suggest under these circumstances?
@bryanhutson67419 күн бұрын
2:32 I hate that these aren't shanked. The extra strength isn't really needed but it looks sloppy. TonyKart can do better.
@ddeadbeat9 күн бұрын
Can you tell me how to check my stator on a ka100 PLEASE. no spark
@valentinospinella937010 күн бұрын
Hello, I am a kart driver from Argentina. Last weekend I bought the engine with the new cylinder from a competitor of mine. Yesterday I compared it on the dyno with my engine with which I took pole position in the 2023 South American championship, the difference was 2hp at the peak. At full acceleration 6300-13500 Rpm: -My engine: 7.239 Sec -New engine: 6,762 sec I think it is a huge difference, don't waste time with the old cylinder. Postscript: the big difference starts at 8,000 rpm. Greetings my friend!!!!
@PowerRepublic10 күн бұрын
thanks for the feedback. yes I agree the new cylinders are looking more peak and mid range power figures. get one if you haven't already is my recco
@tomtom3195.11 күн бұрын
We need another episode of this build!
@PowerRepublic10 күн бұрын
yeah I'm a slacker for sure on this years YT vids. apologies again
@CX29111 күн бұрын
Is this the new X30 S125 you are comparing to, or still the old model?
@slidejobcentral12 күн бұрын
Hey Des, what end of the .9 to 1 scale is lean and rich? So if we’re at .85 do go richer or leaner to get into the preferred range? Odd that there isn’t a single video on KZfaq on how to actually read the data and adjust it to get to the sweet spot….
@kasperebbers645212 күн бұрын
Used big ultrasonic cleaning bath. Results superb!!
@CthulhusRequiem13 күн бұрын
Arrow kart looks innovative, striking yet strong to complete. DPE karts should be introduced to all around the world👍
@MaxInLasVegas14 күн бұрын
What do you need to do this parts list etc where can I learn to do it?
@michaelholdcroft514614 күн бұрын
Great video Derek, thank you. Where is the change over between the low and high jet is it rpm or load based? Or do they both play a part throughout the rev range.
@joma67216 күн бұрын
How do adjust the squish? Im a tad confused!
@timleeton711416 күн бұрын
What oil would you recommend for vortex rock GP?
@kittymann420616 күн бұрын
Is this the same for junior rotax
@slidejobcentral17 күн бұрын
Hey Des, how close should new pads be to the disk? I just put new pads in and the disk is rubbing when I turn the axle. I've moved it over in both directions and I can't get it to spin without touching. Kart is a 401R
@PowerRepublic16 күн бұрын
Yeah that can happen. What i do is start her up on the stand and give her the “cadet dad engine warm up procedure”. That should get some heat into the disc and pads, and release some gases as well as giving you enough clearance to roll out the pit.
@stephrace17 күн бұрын
Thank's
@PowerRepublic16 күн бұрын
👊👊
@josedelahoz251217 күн бұрын
What if there’s no nipple bleeder on my caliper ?
@PowerRepublic16 күн бұрын
That’s okay, we have a video on that too. If your have a cap screw only, then use a gravity bleeder and then just let the fluid run out. Once a solid stream is coming out, whack the cappy back in and send her
@thebestsoccer206323 күн бұрын
Predator 224cc 4T oil recommendations
@PowerRepublic16 күн бұрын
Geez I’m not 100 percent up to speed on the 4t’s
@ph905dw23 күн бұрын
I noticed lambda placement was further along the exhaust than what u u recommended in ur micro lambda installation video. What’s the best location for a rotax?
@PowerRepublic16 күн бұрын
It won’t change a lot IMo. I would jazz it in around 115mm from the end of the pipe if that works on your kart
@pmfpedro1123 күн бұрын
Hi. I have a Rotax more than 10 years old. Can I upgrade all of it to a 2024 Rotax? Thanks
@pmfpedro1123 күн бұрын
Many thanks for all your vídeos.
@PowerRepublic16 күн бұрын
Yeah should be fine. Do you have the old style power valve too ? I recommend getting the new evo updates too
@pmfpedro119 күн бұрын
@@PowerRepublicYes I stil have the old power valve. Keep with your good work. Many thanks.
@fingalickenchicken24 күн бұрын
Does anyone know if this cylinder is compatible with the Rotax 122 engine used in the Aprilia RS125?
@PowerRepublic12 күн бұрын
not 100% sure on that one but it is made from the same people
@nickguy83124 күн бұрын
They are pain in the arse Rotax would be best advised just to forget them!
@Arthur_Ray_Karting25 күн бұрын
Awesome video again 🎉
@PowerRepublic12 күн бұрын
Thank you so much 😀
@LactoseTolerant5025 күн бұрын
How would you charge it? my battery is out now and I dont know what to do besides having the kart on
@brendan45426 күн бұрын
what changes need to be made for rotax to go from open to restricted? gearing, jetting?
@PowerRepublic26 күн бұрын
up 2 jet sizes and add 2-3 teeth
@brendan45426 күн бұрын
@@PowerRepublic 2 jets bigger to run restricted? whats the theory/practice on how that works?
@BenjoH3K26 күн бұрын
I would love to see a comparison with a Micro or Mini engine as well. We have a terrible 2024 engine, which especially lack topspeed. We are more than 0,5 seconds behind compared to our 2022 engine on a track where the laptimes are around 31 seconds in the Micro category.
@PowerRepublic26 күн бұрын
yeah I haven't got any micros here at the moment for you to show. if I get some ill show it on shorts or tiktok
@RedExions26 күн бұрын
From what I found the difference is nowhere near as big as shown in these tests. From what I found the new cylinder gives less bottom and top whilst giving more mid. Result? Lap times are pretty much the same. If you wanted to have a more accurate experiment, maybe use the same engine for both cylinders and complete the test within the same hour.
@PowerRepublic26 күн бұрын
yeah I think own track the best of the old style motors will still be as good as the 2024 style. but I think that if you had an old plonker before, you could upgrade the cylinder and be on spec with the big boys
@steveeparsonsjr792926 күн бұрын
Ok you stated this isn't the same engine how is the engine bolt holes lining up. I have a engine mount that no holes line up so I need to cut some new ones I just need to know how to line it up so I know it's not going to dog walk on me then I can mark it design it cut a new piece on my CNC table but you can't follow this video because there is nothing to bolt down to no holes match the engine pattern.
@spice376726 күн бұрын
In the U.K. the new cylinder has more mid and some cases less top compared to the old……no ways it 3hp…..laps are no faster this year……you have to do the dyno min Of same day if not same hour….we have had 3hp differences if we run different days on dyno.
@PowerRepublic26 күн бұрын
yeah it was summer and now its, winter and that is how long its been since the Rotax has been used here. apologies I reckon the new cylinder and the best of the older ones will be much closer in peak HP in my opinion. and on track it will be hard to measure a huge variation one way or the other. the driver being the biggest variations in my opinion
@PassosPassos-fn1nk26 күн бұрын
Your video is very good and I always follow it. I have a Rotax Evo, and it's not going above 94km/h, I noticed that the valve isn't opening and closing correctly, I've already cleaned it and it's still not working. Do you think this is limiting the speed? as it reached 110km/h. What do you advise me to do? Could it be an electronic problem? Is there any electronic test that can be done? Do you have a video about this? big hug
@BEFITtingImage27 күн бұрын
So if you turn up the low jet to help out of the corners - does that affect the high jet (ie wind it off a bit?) or vice versa?
@PowerRepublic26 күн бұрын
yes to a degree, if you move one it can effect the other. once you have them dialled in, then it is usually just a minute in or out to make them perfect
@andrewseymour373027 күн бұрын
Derek, quick question. The data you pulled up for the engine from January, is that the same engine you swapped the new cylinder to and Dyno'ed? Same set-up etc etc?
@PowerRepublic26 күн бұрын
Hey Andrew, no sorry it wasn't. we were thin on the ground for dyno data for Rotax engines. it would;d have been awesome to have the time to do a direct comparison from old to new on the same day. as I get some more engines through the dyno I will send out an update. the X30 for interest sake, is still going to be hard to beat with either Rotax set up
@andrewseymour373026 күн бұрын
@@PowerRepublic Thanks Derek, keep up the good work!!!!!
@joshrulz8p27 күн бұрын
cant wait to try mine, should only be a second slower than everyone else now lol
@PowerRepublic26 күн бұрын
hhehehee , yeah send it BOI !!!!
@user-ph6vc3nk8k27 күн бұрын
Ok didn't ask
@YoeriKarting36527 күн бұрын
honestly, the difference isn’t that much as it looks at the dyno. My 2023 engine can keep up with the 2024 cylinders. At tracks with a few slow corners in it the difference is not more then 1 or 2 tenths.
@PowerRepublic26 күн бұрын
thanks for the feedback. going to be heaps interesting this weekend at the track when everyone with their engines come out and play
@Kiahnburt4027 күн бұрын
ROK gp is best tag engine.
@PowerRepublic27 күн бұрын
yeah rok GP is a beast.
@elGa_tUrRo27 күн бұрын
Yeah, you can run 1 or 2 smaller sprockets with the new cylinder. Also, it needs more fuel, so the jetting also goes up by about 1 to 3 jets. Definitely felt the extra power once i switched, almost gave me a headache while driving.
@lachlanjeffery8827 күн бұрын
any ideas how it would go on the pre evo? could be interesting how it performs
@PowerRepublic27 күн бұрын
yeah it would work too, but the EVO upgrades IMO would be far superior upgrade over the cylinder alone
@lachlanjeffery8826 күн бұрын
@@PowerRepublic yeah that makes sense, probs best to spend the money on saving up for a new engine rather than the cylinder 😂
@MeZdEe27 күн бұрын
Awesome info. Super keen to see the restricted comparison
@PowerRepublic27 күн бұрын
Coming soon!
@scooterh267727 күн бұрын
I watched a young guy do this on Saturday No good for arthrits hands tho...
@PowerRepublic26 күн бұрын
yeah nah, you can hit nails into timber with your hands too, but I prefer a hammer
@Kmapri327 күн бұрын
Could i use the radiator from my pre evo for an evo engine?
@PowerRepublic26 күн бұрын
yepo
@wouterjansen788227 күн бұрын
Derk, can you put the graphic from the Vortex ROK GP in it as well..??? I think it is still more powerfull..?!
@PowerRepublic27 күн бұрын
yeas the ROK has the most peak power for sure !! Ill throw it up on shorts
@xLucas9327 күн бұрын
I have a 23’ senior engine with the older style cylinder, yesterday I tested my teams 24 engine with this cylinder, and holy smokes I felt it the second I drove out, definitely worth the investment
@PowerRepublic27 күн бұрын
damn, that's incredible. spinning tyres ?
@Valentino636zdm27 күн бұрын
how much faster did u go on a new cylinder?
@xLucas9327 күн бұрын
@@PowerRepublicnot to that extend but the track I tested at there is a long straight and 2 right handlers that are flat, my own engine couldn’t hit the limiter and it stopped at 114 km/h, the 24’ cylinder hit 120 and maxed out just before turning in and kept around 100-50 rpm from limiter just before hitting the brakes, insane difference, lovely bit of kit, should say that my own engine deserves a little love by the engine builder but even in slipstream it only hit 117-18 where it was 120 in clean air
@xLucas9327 күн бұрын
@@Valentino636zdmthe tires were dead when I did my fastest lap but I believe it was about 3,5 tenths but it varies by track of course😁