mountainsledmania
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The sled will not run properly on a stand with a turbo. There is no load on it, the turbo needs load to work. Ive tried it and thought there was something terribly wrong. Not the case
Silbers 850 turbo kit could be the answer..
- Thread starter fredw
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The sled will not run properly on a stand with a turbo. There is no load on it, the turbo needs load to work. Ive tried it and thought there was something terribly wrong. Not the case
turboetech
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Any idea exactly what the clutching is?
turboetech
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I have ran a pile of doos over the years and hear guys say clutches can be held after some pulls.... I have tried this many of times and left dna behind every time.... I have ran aerocharger and boost-it turbos on the doos and prob every system made for the scud Yamaha nytros and a nypex.... I have yet to be able to hold my hand on any of them after a few pulls in the powder.... so I can’t see this 850 G4 any different but if there is a set up out there I would like to hear about it... all I can say is heat is normal in clutches it’s the nature of the beast
Caper11
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On which sled. I clutched both of them?
kanedog
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So then no turbo will run on a stand cuz it needs to be loaded?
turboetech
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This is a 850 Silber thread....or if you have two 850s let’s hear both
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turboetech
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I’m thinking mm is saying it’s pretty tuff to tune and diagnose a turbo sled on a stand with no load on it
Lund
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That is correct, no engine on the planet will make power without a load applied. NA, turbo or otherwise.
Thus why many can't clutch a sled, you need to load it till it can't take it anymore. The more you load it the more hp it will make till it max'ed out.
That is as simple as i'm willing to chime on a more complex subject of loading the engine to make a motor produce power.....carry on.
mountainsledmania
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You can take my boost it xm with kens P-85 and team... ride it up the steepest hill in sight and grab the clutches with your bare hands rite after. If you burn your hands.... you can have my sled. Everyone on here can see this post. so i will infact honor it. I will sell it to you for 1 dollar in the parking lot.... same day.
mountainsledmania
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In a way ... yes correct. The sled will run.. and you may or may not be able to get it to full rpms... and it will have a big somewhere in the rpm range.
^^^ wut he said
turboetech
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You got a deal except we will use your hands for the hot test after I take two pulls up hill climb Allen creek top too bottom and check heat at the top.... anyone want to buy a cheap boostit Xm... lol.... win win no risk for me bud..... yeeehaa
Caper11
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Lund is correct, especially with the pdrive, that weight is just as important. Adding weight to the pivot is IMO the wrong way to load the pdrive. That pivot weight should just fine tune the rpm. Now depending on the ramps used in the kit which it sounds like its stock, that procedure may vary.
Venom told me his setup and it is sound. As I mentioned I would prefer venom to setup his sled for his desired boost and primary weight setting, ride it at altitude and see how it works before changing things. He does need to go prepared to play with his sled instead of going riding for the first bit. Play with the clickers, play with the weight and see what his sled likes and does not like. We aim for 8000 on the tach for tach error.
FYI Andrew Munster struggled with his silber till he figured out the fuel filter was the problem.
Venom told me his setup and it is sound. As I mentioned I would prefer venom to setup his sled for his desired boost and primary weight setting, ride it at altitude and see how it works before changing things. He does need to go prepared to play with his sled instead of going riding for the first bit. Play with the clickers, play with the weight and see what his sled likes and does not like. We aim for 8000 on the tach for tach error.
FYI Andrew Munster struggled with his silber till he figured out the fuel filter was the problem.
kanedog
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I'll come out and get you and your sled. We all go to Whistler. Unfortunately, you will have to leave the sled. Won't cost you a dime but it will cost you a sled.
I'm just messing with ya bud! I understand what you are saying! When yer **** is rippin', like truly rippin' in mid seasom, not 1st ride out, it is something special. Lotta work and money to get there but fack is it ever fun!
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turboetech
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Hell ya big dog I’m packing an overnight bag.... headin somewhere nov 24 25 26... most snow will dictate
mountainsledmania
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Hey, Im just saying im confident enough that my clutches are cool to give away my machine if what im sayin is BS. And i can assure u what im sayin is not BS. Before the upgrade with the stock clutches yes... if you touched them you would leave a layer of epidermis on both. Im being honest when i say this set up flat out works, its to bad i didn't try them out before i put the turbo on. May have saved 7K lol
turboetech
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I get it... it’s all good.... it’s just too bad someone with a turbo 850 silber has not chimed in and described their stock clutch setup I’m sure the stock clutching can be made to work better than just changing clutch springs helix and pin weight.... I hate reinventing the wheel someone must be running the stock clutching and got it figured out.... going to give Big John a call at SHR Monday morning I’m sure they have a fly weight setup that works without blowing another couple grand or more on aftermarket clutches and setup
Well got out again today to the same place for another little rip(2550ft elev). This time I ran the sled without any wastegate spring and what a difference it made. Even without a spring it still made 2+ lbs of boost(temporary boost gauge installed). Didnt hold it too long but it was clean and crisp all the way through to 7700rpm. Its was definitely a boost/fuel issue. Ran 1gram more weight then I did with the 3lb spring and pulled 7700rpm.
Its was pretty chilly out so didnt stay playing with the clutching. Clutches got fairly warm but could hold your hand on them no problem.
I'm happy! This thing is gonna b a blast to ride. Heading to blue river on the 30th, Can't wait.
Had a feeling that I would have better results this time out. Spinning up on the stand spring vs no spring showed me something. It's not tuning by any means but the results were different.
Cheers!
Its was pretty chilly out so didnt stay playing with the clutching. Clutches got fairly warm but could hold your hand on them no problem.
I'm happy! This thing is gonna b a blast to ride. Heading to blue river on the 30th, Can't wait.
Had a feeling that I would have better results this time out. Spinning up on the stand spring vs no spring showed me something. It's not tuning by any means but the results were different.
Cheers!
mountainsledmania
Active VIP Member
Theres is a way to make the stock clutches work. An SHR clutch kit.... he has them dialed in.
I emailed SHR and it was $400 us for there kit. By the time I got it to Alberta its $600. Never inquired about just getting his ramps with the flyweights at the time. That's probably not a bad option either. Gonna sink that $600 into a p85.
Caper11
Active VIP Member
Why run the stock clutching on the silber?? I thought it came with clutching??? If it came with clutching whats wrong with what silber sent????
Or are you mentioning the clutches in general, and going to a p85.
Pfi572 has a p85 forsale all ready to go, and a paragon secondary.
Or are you mentioning the clutches in general, and going to a p85.
Pfi572 has a p85 forsale all ready to go, and a paragon secondary.
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