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Post by captincvmn on Nov 18, 2020 15:34:08 GMT -5
The contra spring being very stiff would cause the variator to need to push extra hard/ higher rpm to make ratios change to higher.
Scooter SwapShop just dropped a video recently about a guy who came in for service with a red in.
If you’re going for higher rpm takeoff from what I understand so far you want heavier clutch springs and for higher overall rpm lighter variator weights and stiffer contra spring to hold rpm longer before ratios change a lot.
More experienced guys- is this correct?
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pewpew
Scoot Enthusiast
Posts: 254
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Post by pewpew on Nov 18, 2020 16:02:25 GMT -5
The contra spring being very stiff would cause the variator to need to push extra hard/ higher rpm to make ratios change to higher. Scooter SwapShop just dropped a video recently about a guy who came in for service with a red in. If you’re going for higher rpm takeoff from what I understand so far you want heavier clutch springs and for higher overall rpm lighter variator weights and stiffer contra spring to hold rpm longer before ratios change a lot. More experienced guys- is this correct? Clutch spring adjustment didnt do anything, probably only made it worse |
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Post by aeroxbud on Nov 18, 2020 18:07:27 GMT -5
The lag at take off was probably more down to heat in the CVT. This is why you see so many fast scooters with cut up CVT covers.
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Post by 90GTVert on Nov 18, 2020 20:17:33 GMT -5
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Post by captincvmn on Nov 18, 2020 21:11:46 GMT -5
You need a steam powered pump that uses waste heat from the exhaust to make steam to drive the pump.
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pewpew
Scoot Enthusiast
Posts: 254
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Post by pewpew on Nov 19, 2020 5:56:07 GMT -5
I got the mvt millenium ingition kit, it has better charging power than inner rotor kits and i only have the stage6 speedometer from the battery. It should be enough to run the pump |
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pewpew
Scoot Enthusiast
Posts: 254
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Post by pewpew on Nov 19, 2020 5:56:56 GMT -5
The lag at take off was probably more down to heat in the CVT. This is why you see so many fast scooters with cut up CVT covers. I have the Top performances cvt cover with cooling. It never went to normal after even cooling down. |
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Post by 808ministroke on Nov 20, 2020 9:30:26 GMT -5
I run a $20 solar water heater pump I got from ebay. I had it for like two years and on two separate builds super light n compact and moves plenty of water. Rated at 8gallons per minute. Worked great for a 77mina mhr and currently using it on a 86piaggio mhr. It draws a small amount o power id say as I run it and temp gauge direct from 4lb battery that doesn't get recharged by stator, I usually have to recharge or switch battery after say two hrs or so the gauge dies before pump so it works like fail safe if the gauge goes off then a wire got detatched or dead battery so as long as gauge is on I know pump is working. Nuff power to pump through engine then tomrad in front then to rad under seat , three meters of vert. Lift just make sure to mount near bottom as doesn't self prime . Need help choosing a contra spring. I had the malossi red one with the 86cc tpr but i think it was too light. Straight after starting the engine it worked fine but after warming up it took a second to take off. The red one was +40% and i tried stage6 hard (+50%) and had no difference. How strong contra spring i need? Then i need a light and compact electric waterpump, preferably under 50€/60$. Has anyone used a electric waterpump? |
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Post by hippo008 on Nov 20, 2020 10:03:48 GMT -5
I am running a bosch axillary coolant pump from a Mercedes SL500 I got from work. The pump itself is high quality and uses connections that work with 5/8 heater hose. I run an LED headlight and the pump, I've never had charging issues.
I know user on here used a Toyota Prius electric water pump with great success and that drew less than 1Amp, plenty of charging headroom.
I have heard of people using fountain pumps in single seater buggies like the FL400 with no issue. The FL400 puts out way more horsepower and heat then a little minarelli could ever dream of.
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pewpew
Scoot Enthusiast
Posts: 254
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Post by pewpew on Nov 25, 2020 13:07:23 GMT -5
Will a 36mm Keihin pwk be too big for this setup? I have been trying to find a 33mm Keihin pwk but they arent sold anywhere for under 250€.
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Post by hippo008 on Nov 25, 2020 13:17:25 GMT -5
Yes. 36 is huge. 100cc Roost motors run a 28(?) I believe. Stage6 95 R/T I think runs a 26. 36mm venturi is the same size as a YZ250 motocross bike that produces about 50HP.
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pewpew
Scoot Enthusiast
Posts: 254
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Post by pewpew on Nov 25, 2020 17:52:36 GMT -5
Yes. 36 is huge. 100cc Roost motors run a 28(?) I believe. Stage6 95 R/T I think runs a 26. 36mm venturi is the same size as a YZ250 motocross bike that produces about 50HP. I ran a 32mm pwk with my tpr 86cc and it was fine, i have seen a 95cc r/t with a 35mm keihin pwk on the forum |
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Post by hippo008 on Nov 25, 2020 23:31:09 GMT -5
I mean if it works it works. However going off Brent's carb sizing chart and the size of motor a 36 is usually installed on I still think its too large.
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Post by Lucass2T on Nov 26, 2020 2:51:00 GMT -5
Yes. 36 is huge...36mm venturi is the same size as a YZ250 motocross bike that produces about 50HP. Exactly this. 38mm is seen on some ported and highly tuned 125's. Even the 125cc 50hp TM KZ engines run a 30mm.Forget about that 36mm  it's just ridiculous. A big carb doesn't in the least bit mean big power. Have you ever put it on the dyno to have some sort of base line for power output and where the power sits? 36mm is just ridiculous. Check what size carb a 85cc dirtbike runs. Those are race bred engines and maybe take that as a guideline? Or maybe build a better exhaust, do some porting and flowing inside the engine, swap around reed petals, do some ignition tuning, do some carb tuning, airbox tuning before you swap to the big talk overkill carburetor sizes? |
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pewpew
Scoot Enthusiast
Posts: 254
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Post by pewpew on Nov 26, 2020 9:10:29 GMT -5
I mean if it works it works. However going off Brent's carb sizing chart and the size of motor a 36 is usually installed on I still think its too large. Yes i know its too big, but is it impossible to make work on this engine? It will have the mxs intake kit with kx85 vforce reeds and alot of porting |
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it's just ridiculous. A big carb doesn't in the least bit mean big power.