Chain case life Gen 5

[Bobsledder]

You people need to calm down. Ambassadors arent given that much of information from the factory if sometimes any. And their knowledge on problems is very largely based on their personal experience on their personal sled or riding group. If you have watched Muskoka Freerider, I think there was only one or two G5 chain failures during the whole season with all the people he was riding with.

Well they sure talk like they are part of the R&D team. Don't do that if your not. Always talking up no failures with machines at Carl's. Those sleds have an easy life piloted by high paying tourists led around the hills. Muskoka and his buds represent a very small part of the riding population here

 

[Driver]

Well they sure talk like they are part of the R&D team. Don't do that if your not. Always talking up no failures with machines at Carl's. Those sleds have an easy life piloted by high paying tourists led around the hills. Muskoka and his buds represent a very small part of the riding population here

Well early on the season they said to keep your chain properly adjusted. At that point probably yet not too much of failed units. If I remember right, Doo reacted on the issue on February.

 

[Turbo Thompson]

Let's see if the ambassador.responds to this?

 

[Norona]

You people need to calm down. Ambassadors arent given that much of information from the factory if sometimes any. And their knowledge on problems is very largely based on their personal experience on their personal sled or riding group. If you have watched Muskoka Freerider, I think there was only one or two G5 chain failures during the whole season with all the people he was riding with.

Due to supply chain delivery issues Doo had to install old n.a. chain and sprockets to new turbos on North America. It was not the original plan. And it backfired probably even worse than Doo anticipated. In Europe there was a lot less problems as we had stronger chain and sprockets.

But now as all 23 and 24 turbos are gonna back to Hyvo, Im sure there will be a lot less issues with them. Some single failures might still occur ofc. but I would expect that no more large scale issues.

I personally chat with engineering twice a month and more if I want, as well as the whole team, there are things that are confidencial as I have said. The good news is as some have mentioned is to contact your local dealer with serial number to see anything with your sled. And yes it has changed since last season all 24 turbos will have Borg Warner(hyvo) chain and gears. I always will give honest and up to date info, and totally understand if guys are not happy with current info or use me as the punching bag, I step into this ring(even though I don't have to) to try and keep up to date info good or bad and accept the kind words and the not so kind words. Hope everyone has a great season, cheers dave

 

[simnil]

Apparently they have put the split drive shaft on the RS race sled this year.
Bald move considering the top racers needs to change sleds, or at least do a chassi swap, at 20h. How long will a "pre broken" drive shaft survive in an environment that wrecks a chassi in 20h?

 

[Malgomaj]

Anyone heard about a non turbo gear and chain failure? Does this failures only happen to turbo sleds? I have a ‘24 Freeride and it doesn’t say anything about Hyvo on the chain case.


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[NHRoadking]

I personally chat with engineering twice a month and more if I want, as well as the whole team, there are things that are confidencial as I have said. The good news is as some have mentioned is to contact your local dealer with serial number to see anything with your sled. And yes it has changed since last season all 24 turbos will have Borg Warner(hyvo) chain and gears. I always will give honest and up to date info, and totally understand if guys are not happy with current info or use me as the punching bag, I step into this ring(even though I don't have to) to try and keep up to date info good or bad and accept the kind words and the not so kind words. Hope everyone has a great season, cheers dave

Dave:

Is it just the chains and gears that are the issue or is the split shaft causing some of the problems too?

 

[Driver]

Anyone heard about a non turbo gear and chain failure? Does this failures only happen to turbo sleds? I have a ‘24 Freeride and it doesn’t say anything about Hyvo on the chain case.


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Only applies to 850Turbo R models, not n.a. Your sled has basic Rexnord chain & sprockets as they have been since 2017. On n.a. sleds they have been fairly reliable, just remember to tighten chain to spec.

 

[jcjc1]

 

[Teth-Air]

Lower HYVO sprocket is also updated, there is no holes on the sprocket anymore. Should be even stronger than those 2020-2022 turbo sprockets. And NEVER heard failures on 20-22 turbos.

So they have given up on trying to be light weight? I bet they will get those holes back in future designs.

 

[NHRoadking]

So they have given up on trying to be light weight? I bet they will get those holes back in future designs.

I think Doo gave up on lightening their sleds years ago.

 

[Driver]

So they have given up on trying to be light weight? I bet they will get those holes back in future designs.

Well G5 is lighter than G4 ever was so no. G5 Turbo R has best power to weight ratio in the industry. If few more grams makes sled more reliable Im willing to take it.

 

[Teth-Air]

Well G5 is lighter than G4 ever was so no. G5 Turbo R has best power to weight ratio in the industry. If few more grams makes sled more reliable Im willing to take it.

I believe it has the best torque to weight ratio but I bet the Boost will still push more top end power and it is definately lighter.

 

[caper11]

Wrong, the boost does not. Even with a tune the boost does not feel like it has the power of the G5.
I believe doos dyno number when they dynoed it.

 

[Teth-Air]

Wrong, the boost does not. Even with a tune the boost does not feel like it has the power of the G5.
I believe doos dyno number when they dynoed it.

Your "feel" comes from torque and no initial restriction from the turbo as it is bypassed early. This is a very good design on a 2 stroke.

 

[Driver]

I believe it has the best torque to weight ratio but I bet the Boost will still push more top end power and it is definately lighter.

Etec 850 Turbo R has 8hp more than 850 Boost

See 10:53-> forward

 

[Driver]

I believe it has the best torque to weight ratio but I bet the Boost will still push more top end power and it is definately lighter.

And theres a lots of videos like these. No need to doubt which one is more powerful and which has better power to weight ratio.

20:50->


08:50->

 

[Teth-Air]

Yes the Skidoo can outpull the Boost in many cases due to it's torque but the Boost is reported to have 10% more HP than than the NA Patriot 850 which independant dynos report 165 to 171 hp. You do the math. HP is not the deciding factor here is what I am saying. Nor power to weight ratio. Dyno shops want to chime in and put us both straight?

 

[Driver]

Yes the Skidoo can outpull the Boost in many cases due to it's torque but the Boost is reported to have 10% more HP than than the NA Patriot 850 which independant dynos report 165 to 171 hp. You do the math. HP is not the deciding factor here is what I am saying. Nor power to weight ratio. Dyno shops want to chime in and put us both straight?

HP is as deciding factor as torque, weight, rolling resistance, clutching, track, snow pack, etc. And with G5 doo has hit the home run as what comes to overall performace.

Boost has 8hp less than Turbo R just as Doo says. There are plenty of small dyno shops and you can see their results +- 20hp depending how dyno is calibrated and operated. Most of them have no proper knowledge or know-how and results are unreliable. When you put those sleds to certified dyno on the same day and then you will get those realistic numbers.

 

[damx]

I mountain ride at 1500-4000' most of the time. The boost does not even come close to the turbo r. I'm pulling 10-12 mph over any boost in the group on the top end, and get out the hole way faster. The turbo r also gets the 9r from dig evey time. I jumped to doo last year, and we have 3 more in the group selling the boost for doo turbo r. The boost with 20hp tune from bikeman or ibexx still can't out run a stock doo turbo r.. I had a boost in 22 and had a 9r for 3 weeks later season to see what's its all about.