HS Carbon Valve Push Rod set of 10
Carbon pushrod set of 10 for S150 and S250, please check the length in mm before ordering, ask us for special sizes.
The summarized Advantages and Features are:
The ball ends consist of Chrome Vanadium steel type without wear.
Minimized Transmission loss because of the optimized knuckle Joint of the ball / pan system
50 % less weight because of the light but high strength carbon tubes. The decreased mass will lead to a decreased inertia on high RPM, rapidly lessening the threat of what we call “ a floating valve train” where due to the mass of the valvetrain overpowering the return valve spring, which was never designed to see such loads, we start “floating” and therefore destroying the engines timing or even expelling pushrods.
If you lose pushrods then you experience the minor symptoms of a floating valve train, the major ones being catastrophic failure.
There is less friction at the cam drum. The adjusted valve clearance remains consistent.
Higher RPM Speed while maintaining valve timing.
This will equal more top end for your Moki. I use this setup on several of my Mokis and the result is quite astonishing.
At the same time it absorbs vibrations. I have never lost a push rod.
10 HS Carbon Push Rods
valve gap adjustment bolts and nuts
HS Valve Adjust Gauges
Push Rod Grease
open wrench 5.5mm
We have learned a lot during the operation of our Seidel SPX geardrive and how to prepare the Moki for higher RPM. Please keep in mind that the Seidel SPX is a mature and well thought out design, designed and made in Germany, but some of the parts used can be applied should one want to minimize the risk which is created when running low native pitch adjustable propellers. Again, the Seidel will not see harmful RPM, but your pitch adjustable prop may due to its low native pitch blade. You can tell those by simply holding them next to a “real” 12 pitch or higher blade.
A direct drive Moki radial S150 will run anywhere between a 14 to 18 pitch, a S250 anywhere from 16 to 20 pitch. Keep in mind that these are the extreme values, most if not all will end up somewhere in between. Would you want to achieve that with an adjustable pitch prop, and mind me, one that is preset on the ground, will not be pitch managed interactively in the air, you absolutely need to run a native pitch on your pitch adjustable prop of around -2 of your intended pitch at most. Meaning, on a S150 you would want a native 12 pitch blade or higher, on the S250 a 14 pitch blade or higher.
Otherwise you WILL revv too high. Doubt the common sense? Imagine you wanted an 18 pitch prop from us and I would offer you to cut a 7 pitch prop in half and glue it back together at a “fantasy 18 pitch”. Would you hand me your money?
Now, we are fully aware that some run such low pitch native blades on their Moki. In order to manage the risk somewhat we now offer two different products which should both be used in combination.
Keep in mind: there is NOTHING wrong with the Moki, but if you are running a low native pitch prop at an angle such as you find on some market leading adjustable prop setups you are pushing the risk profile and the RPM beyond what the Moki was ever designed for, you can not blame anyone but your prop choice in that case.