#31
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I also purchsed one of these for my 300. I wanted to see if it softened the hit when the power valve opened. I now have about 200 miles of riding with it including dry hard clay/rock, mud and water, and perfect sand. Overall I liked it. It controlled the hit somewhat and I did not notice any other negatives. I have a Rekluse so the stalling was not an issue before. Response to clutch was still good. Now the good news. I thought since it was taming the hit I would try lower 13 -50 gearing. I tried this gearing once before but in the slick hard rocks I would regularly get more wheel spin than with the 13-48. So anyway. With the weight the 13-50 really worked well. Put the Map switch to sum mode and it really responded smoothly to the clutch. In the rain mode sayed very smooth and linear. I run a Suzuki needle for reference. So was it in my head or was it real? Average Speed on my 20 mile loop 17.7. Fastest I have ever had before 17.3; today was not ideal traction (but ok) and everything is really green hampering visual lead. I think the rearing gave me the speed but the flywheel let me use the gearing. I recomend if you ride where traction is not ideal.
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#32
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Just ordered one. Sounds like exactly what I was looking for. Thanks.
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#33
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Actually the exact opposite. You want instant throttle response on a trials bike. Any delay can really screw you up.
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04 Montesa 315R, 07 EC300, 21 KTM Erzberg 300, 21 Sherco 300 SEF-F, 23 KTM 690, 23 Rieju Mr Pro 300 |
#34
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Still one of the best mods on my bike!!!
Sent from my iPhone using Tapatalk
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2012 - XC 300 Racing Seattle, WA |
#35
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Quote:
trial bike have a heavy flywheel indeed (as far as i know). Hannes. |
#36
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Correct.
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#37
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For the displacement the flywheel, at least in my Montesa, is smaller than most enduros.
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04 Montesa 315R, 07 EC300, 21 KTM Erzberg 300, 21 Sherco 300 SEF-F, 23 KTM 690, 23 Rieju Mr Pro 300 |
#38
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Quote:
The trials bike engine internalizes a lot of the crank effect in the crank itself.Coupled with a bore and stroke designed to rev quickly and smoothly just off idle.They don't rev really.Very low rpm in comparison to moto or modern enduro/offroad racing 2 stroke engines. Its about torque. The old trials bikes did have monster flywheels. The thought I had after reading through the thread.How much weight can the engine handle out on the end of the crank.23 ounces is a lot of weight out there for an engine that is designed to really spool it up. Bearing,case wise.What's to much? |
#39
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Quote:
__________________
04 Montesa 315R, 07 EC300, 21 KTM Erzberg 300, 21 Sherco 300 SEF-F, 23 KTM 690, 23 Rieju Mr Pro 300 |
#40
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Quote:
If I was contemplating that mod,I would cross reference main bearings and rod bearing sizes between a trials bike engine with approximate cc as what I was modifying. Factor in the trials bike is much lighter.And is designed to run at a lower rpm with an intake,exhaust and electrical system designed for smooth almost electric acceleration and decceleration.There is no hit and the engine will only rev so high. There is a cutoff somewhere to how much weight you can add and still expect the lower end to hold up. |
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